l1_play_the_game.ipynb

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    "# Introduction\n",
    "\n",
    "**[Connect Four](https://en.wikipedia.org/wiki/Connect_Four)** is a game where two players alternate turns dropping colored discs into a vertical grid. Each player uses a different color (usually red or yellow), and the objective of the game is to be the first player to get four discs in a row. \n",
    "\n",
    "<center>\n",
    "<img src=\"https://storage.googleapis.com/kaggle-media/learn/images/40B1MGc.png\"><br/>\n",
    "</center>\n",
    "\n",
    "In this course, you will build your own intelligent agents to play the game.\n",
    "- In the first lesson, you'll learn how to set up the game environment and create your first agent.\n",
    "- The next two lessons focus on traditional methods for building game AI.  These agents will be smart enough to defeat many novice players!\n",
    "- In the final lesson, you'll experiment with cutting-edge algorithms from the field of reinforcement learning.  The agents that you build will come up with gameplay strategies much like humans do: gradually, and with experience. \n",
    "\n",
    "# Join the competition\n",
    "\n",
    "Throughout the course, you'll test your agents' performance by competing against agents that other users have created.  \n",
    "\n",
    "To join the competition, open a new window with **[the competition page](https://www.kaggle.com/c/connectx/overview)**, and click on the **\"Join Competition\"** button. (_If you see a \"Submit Agent\" button instead of a \"Join Competition\" button, you have already joined the competition, and don't need to do so again._)\n",
    "\n",
    "<center>\n",
    "<img src=\"https://storage.googleapis.com/kaggle-media/learn/images/dDX1YVW.png\" width=80%><br/>\n",
    "</center>\n",
    "    \n",
    "This takes you to the rules acceptance page. You must accept the competition rules in order to participate. These rules govern how many submissions you can make per day, the maximum team size, and other competition-specific details. Then, click on **\"I Understand and Accept\"** to indicate that you will abide by the competition rules.\n",
    "\n",
    "# Getting started\n",
    "\n",
    "The game environment comes equipped with agents that have already been implemented for you.  To see a list of these default agents, run:"
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      "['random', 'negamax']\n"
     ]
    }
   ],
   "source": [
    "from kaggle_environments import make, evaluate\n",
    "\n",
    "# Create the game environment\n",
    "# Set debug=True to see the errors if your agent refuses to run\n",
    "env = make(\"connectx\", debug=True)\n",
    "\n",
    "# List of available default agents\n",
    "print(list(env.agents))"
   ]
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    "The `\"random\"` agent selects (uniformly) at random from the set of **valid moves**.  In Connect Four, a move is considered valid if there's still space in the column to place a disc (i.e., if the board has seven rows, the column has fewer than seven discs).\n",
    "\n",
    "In the code cell below, this agent plays one game round against a copy of itself."
   ]
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       "              0,\n",
       "              2,\n",
       "              1,\n",
       "              1,\n",
       "              1,\n",
       "              2,\n",
       "              2,\n",
       "              1\n",
       "            ],\n",
       "            &quot;mark&quot;: 1\n",
       "          },\n",
       "          &quot;status&quot;: &quot;INACTIVE&quot;\n",
       "        },\n",
       "        {\n",
       "          &quot;action&quot;: 0,\n",
       "          &quot;reward&quot;: 0,\n",
       "          &quot;info&quot;: {},\n",
       "          &quot;observation&quot;: {\n",
       "            &quot;remainingOverageTime&quot;: 60,\n",
       "            &quot;mark&quot;: 2\n",
       "          },\n",
       "          &quot;status&quot;: &quot;ACTIVE&quot;\n",
       "        }\n",
       "      ],\n",
       "      [\n",
       "        {\n",
       "          &quot;action&quot;: 0,\n",
       "          &quot;reward&quot;: 0,\n",
       "          &quot;info&quot;: {},\n",
       "          &quot;observation&quot;: {\n",
       "            &quot;remainingOverageTime&quot;: 60,\n",
       "            &quot;step&quot;: 16,\n",
       "            &quot;board&quot;: [\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
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       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
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       "              0,\n",
       "              2,\n",
       "              1,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              2,\n",
       "              2,\n",
       "              2,\n",
       "              0,\n",
       "              0,\n",
       "              1,\n",
       "              0,\n",
       "              2,\n",
       "              1,\n",
       "              1,\n",
       "              0,\n",
       "              2,\n",
       "              1,\n",
       "              1,\n",
       "              1,\n",
       "              2,\n",
       "              2,\n",
       "              1\n",
       "            ],\n",
       "            &quot;mark&quot;: 1\n",
       "          },\n",
       "          &quot;status&quot;: &quot;ACTIVE&quot;\n",
       "        },\n",
       "        {\n",
       "          &quot;action&quot;: 5,\n",
       "          &quot;reward&quot;: 0,\n",
       "          &quot;info&quot;: {},\n",
       "          &quot;observation&quot;: {\n",
       "            &quot;remainingOverageTime&quot;: 60,\n",
       "            &quot;mark&quot;: 2\n",
       "          },\n",
       "          &quot;status&quot;: &quot;INACTIVE&quot;\n",
       "        }\n",
       "      ],\n",
       "      [\n",
       "        {\n",
       "          &quot;action&quot;: 6,\n",
       "          &quot;reward&quot;: 0,\n",
       "          &quot;info&quot;: {},\n",
       "          &quot;observation&quot;: {\n",
       "            &quot;remainingOverageTime&quot;: 60,\n",
       "            &quot;step&quot;: 17,\n",
       "            &quot;board&quot;: [\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
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       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              2,\n",
       "              1,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              2,\n",
       "              2,\n",
       "              2,\n",
       "              0,\n",
       "              0,\n",
       "              1,\n",
       "              0,\n",
       "              2,\n",
       "              1,\n",
       "              1,\n",
       "              1,\n",
       "              2,\n",
       "              1,\n",
       "              1,\n",
       "              1,\n",
       "              2,\n",
       "              2,\n",
       "              1\n",
       "            ],\n",
       "            &quot;mark&quot;: 1\n",
       "          },\n",
       "          &quot;status&quot;: &quot;INACTIVE&quot;\n",
       "        },\n",
       "        {\n",
       "          &quot;action&quot;: 0,\n",
       "          &quot;reward&quot;: 0,\n",
       "          &quot;info&quot;: {},\n",
       "          &quot;observation&quot;: {\n",
       "            &quot;remainingOverageTime&quot;: 60,\n",
       "            &quot;mark&quot;: 2\n",
       "          },\n",
       "          &quot;status&quot;: &quot;ACTIVE&quot;\n",
       "        }\n",
       "      ],\n",
       "      [\n",
       "        {\n",
       "          &quot;action&quot;: 0,\n",
       "          &quot;reward&quot;: -1,\n",
       "          &quot;info&quot;: {},\n",
       "          &quot;observation&quot;: {\n",
       "            &quot;remainingOverageTime&quot;: 60,\n",
       "            &quot;step&quot;: 18,\n",
       "            &quot;board&quot;: [\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              2,\n",
       "              1,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              0,\n",
       "              2,\n",
       "              2,\n",
       "              2,\n",
       "              2,\n",
       "              0,\n",
       "              1,\n",
       "              0,\n",
       "              2,\n",
       "              1,\n",
       "              1,\n",
       "              1,\n",
       "              2,\n",
       "              1,\n",
       "              1,\n",
       "              1,\n",
       "              2,\n",
       "              2,\n",
       "              1\n",
       "            ],\n",
       "            &quot;mark&quot;: 1\n",
       "          },\n",
       "          &quot;status&quot;: &quot;DONE&quot;\n",
       "        },\n",
       "        {\n",
       "          &quot;action&quot;: 6,\n",
       "          &quot;reward&quot;: 1,\n",
       "          &quot;info&quot;: {},\n",
       "          &quot;observation&quot;: {\n",
       "            &quot;remainingOverageTime&quot;: 60,\n",
       "            &quot;mark&quot;: 2\n",
       "          },\n",
       "          &quot;status&quot;: &quot;DONE&quot;\n",
       "        }\n",
       "      ]\n",
       "    ],\n",
       "    &quot;rewards&quot;: [\n",
       "      -1,\n",
       "      1\n",
       "    ],\n",
       "    &quot;statuses&quot;: [\n",
       "      &quot;DONE&quot;,\n",
       "      &quot;DONE&quot;\n",
       "    ],\n",
       "    &quot;schema_version&quot;: 1,\n",
       "    &quot;info&quot;: {}\n",
       "  },\n",
       "  &quot;logs&quot;: [\n",
       "    [],\n",
       "    [],\n",
       "    [\n",
       "      {\n",
       "        &quot;duration&quot;: 1.5e-05,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      },\n",
       "      {}\n",
       "    ],\n",
       "    [\n",
       "      {},\n",
       "      {\n",
       "        &quot;duration&quot;: 1.2e-05,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      }\n",
       "    ],\n",
       "    [\n",
       "      {\n",
       "        &quot;duration&quot;: 1e-05,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      },\n",
       "      {}\n",
       "    ],\n",
       "    [\n",
       "      {},\n",
       "      {\n",
       "        &quot;duration&quot;: 1.1e-05,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      }\n",
       "    ],\n",
       "    [\n",
       "      {\n",
       "        &quot;duration&quot;: 1.9e-05,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      },\n",
       "      {}\n",
       "    ],\n",
       "    [\n",
       "      {},\n",
       "      {\n",
       "        &quot;duration&quot;: 1e-05,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      }\n",
       "    ],\n",
       "    [\n",
       "      {\n",
       "        &quot;duration&quot;: 1.1e-05,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      },\n",
       "      {}\n",
       "    ],\n",
       "    [\n",
       "      {},\n",
       "      {\n",
       "        &quot;duration&quot;: 1.7e-05,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      }\n",
       "    ],\n",
       "    [\n",
       "      {\n",
       "        &quot;duration&quot;: 9e-06,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      },\n",
       "      {}\n",
       "    ],\n",
       "    [\n",
       "      {},\n",
       "      {\n",
       "        &quot;duration&quot;: 9e-06,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      }\n",
       "    ],\n",
       "    [\n",
       "      {\n",
       "        &quot;duration&quot;: 2e-05,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      },\n",
       "      {}\n",
       "    ],\n",
       "    [\n",
       "      {},\n",
       "      {\n",
       "        &quot;duration&quot;: 9e-06,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      }\n",
       "    ],\n",
       "    [\n",
       "      {\n",
       "        &quot;duration&quot;: 9e-06,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      },\n",
       "      {}\n",
       "    ],\n",
       "    [\n",
       "      {},\n",
       "      {\n",
       "        &quot;duration&quot;: 1.1e-05,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      }\n",
       "    ],\n",
       "    [\n",
       "      {\n",
       "        &quot;duration&quot;: 1e-05,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      },\n",
       "      {}\n",
       "    ],\n",
       "    [\n",
       "      {},\n",
       "      {\n",
       "        &quot;duration&quot;: 7e-06,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      }\n",
       "    ],\n",
       "    [\n",
       "      {\n",
       "        &quot;duration&quot;: 1.1e-05,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      },\n",
       "      {}\n",
       "    ],\n",
       "    [\n",
       "      {},\n",
       "      {\n",
       "        &quot;duration&quot;: 7e-06,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      }\n",
       "    ]\n",
       "  ],\n",
       "  &quot;mode&quot;: &quot;ipython&quot;\n",
       "};\n",
       "\n",
       "\n",
       "window.kaggle.renderer = // Copyright 2020 Kaggle Inc\n",
       "//\n",
       "// Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);\n",
       "// you may not use this file except in compliance with the License.\n",
       "// You may obtain a copy of the License at\n",
       "//\n",
       "//      http://www.apache.org/licenses/LICENSE-2.0\n",
       "//\n",
       "// Unless required by applicable law or agreed to in writing, software\n",
       "// distributed under the License is distributed on an &quot;AS IS&quot; BASIS,\n",
       "// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n",
       "// See the License for the specific language governing permissions and\n",
       "// limitations under the License.\n",
       "\n",
       "function renderer({\n",
       "  act,\n",
       "  agents,\n",
       "  environment,\n",
       "  frame,\n",
       "  height = 400,\n",
       "  interactive,\n",
       "  isInteractive,\n",
       "  parent,\n",
       "  step,\n",
       "  update,\n",
       "  width = 400,\n",
       "}) {\n",
       "  // Configuration.\n",
       "  const { rows, columns, inarow } = environment.configuration;\n",
       "\n",
       "  // Common Dimensions.\n",
       "  const unit = 8;\n",
       "  const minCanvasSize = Math.min(height, width);\n",
       "  const minOffset = minCanvasSize > 400 ? 30 : unit / 2;\n",
       "  const cellSize = Math.min(\n",
       "    (width - minOffset * 2) / columns,\n",
       "    (height - minOffset * 2) / rows\n",
       "  );\n",
       "  const cellInset = 0.8;\n",
       "  const pieceScale = cellSize / 100;\n",
       "  const xOffset = Math.max(0, (width - cellSize * columns) / 2);\n",
       "  const yOffset = Math.max(0, (height - cellSize * rows) / 2);\n",
       "\n",
       "  // Canvas Setup.\n",
       "  let canvas = parent.querySelector(&quot;canvas&quot;);\n",
       "  if (!canvas) {\n",
       "    canvas = document.createElement(&quot;canvas&quot;);\n",
       "    parent.appendChild(canvas);\n",
       "\n",
       "    if (interactive) {\n",
       "      canvas.addEventListener(&quot;click&quot;, evt => {\n",
       "        if (!isInteractive()) return;\n",
       "        const rect = evt.target.getBoundingClientRect();\n",
       "        const col = Math.floor((evt.clientX - rect.left - xOffset) / cellSize);\n",
       "        if (col >= 0 && col < columns) act(col);\n",
       "      });\n",
       "    }\n",
       "  }\n",
       "  canvas.style.cursor = isInteractive() ? &quot;pointer&quot; : &quot;default&quot;;\n",
       "\n",
       "  // Character Paths (based on 100x100 tiles).\n",
       "  const kPath = new Path2D(\n",
       "    `M78.3,96.5c-0.1,0.4-0.5,0.6-1.1,0.6H64.9c-0.7,0-1.4-0.3-1.9-1l-20.3-26L37,75.5v20.1 c0,0.9-0.5,1.4-1.4,1.4H26c-0.9,0-1.4-0.5-1.4-1.4V3.9c0-0.9,0.5-1.4,1.4-1.4h9.5C36.5,2.5,37,3,37,3.9v56.5l24.3-24.7 c0.6-0.6,1.3-1,1.9-1H76c0.6,0,0.9,0.2,1.1,0.7c0.2,0.6,0.1,1-0.1,1.2l-25.7,25L78,95.1C78.4,95.5,78.5,95.9,78.3,96.5z`\n",
       "  );\n",
       "  const goose1Path = new Path2D(\n",
       "    `M8.8,92.7c-4-18.5,4.7-37.2,20.7-46.2c0,0,2.7-1.4,3.4-1.9c2.2-1.6,3-2.1,3-5c0-5-2.1-7.2-2.1-7.2 c-3.9-3.3-6.3-8.2-6.3-13.7c0-10,8.1-18.1,18.1-18.1s18.1,8.1,18.1,18.1c0,6-1.5,32.7-2.3,38.8l-0.1,1`\n",
       "  );\n",
       "  const goose2Path = new Path2D(\n",
       "    `M27.4,19L8.2,27.6c0,0-7.3,2.9,2.6,5c6.1,1.3,24,5.9,24,5.9l1,0.3`\n",
       "  );\n",
       "  const goose3Path = new Path2D(\n",
       "    `M63.7,99.6C52.3,99.6,43,90.3,43,78.9s9.3-20.7,20.7-20.7c10.6,0,34.4,0.1,35.8,9`\n",
       "  );\n",
       "\n",
       "  // Canvas setup and reset.\n",
       "  let c = canvas.getContext(&quot;2d&quot;);\n",
       "  canvas.width = width;\n",
       "  canvas.height = height;\n",
       "  c.fillStyle = &quot;#000B2A&quot;;\n",
       "  c.fillRect(0, 0, canvas.width, canvas.height);\n",
       "\n",
       "  const getRowCol = cell => [Math.floor(cell / columns), cell % columns];\n",
       "\n",
       "  const getColor = (mark, opacity = 1) => {\n",
       "    if (mark === 1) return `rgba(0,255,255,${opacity})`;\n",
       "    if (mark === 2) return `rgba(255,255,255,${opacity})`;\n",
       "    return &quot;#fff&quot;;\n",
       "  };\n",
       "\n",
       "  const drawCellCircle = (cell, xFrame = 1, yFrame = 1, radiusOffset = 0) => {\n",
       "    const [row, col] = getRowCol(cell);\n",
       "    c.arc(\n",
       "      xOffset + xFrame * (col * cellSize + cellSize / 2),\n",
       "      yOffset + yFrame * (row * cellSize + cellSize / 2),\n",
       "      (cellInset * cellSize) / 2 - radiusOffset,\n",
       "      2 * Math.PI,\n",
       "      false\n",
       "    );\n",
       "  };\n",
       "\n",
       "  // Render the pieces.\n",
       "  const board = environment.steps[step][0].observation.board;\n",
       "\n",
       "  const drawPiece = mark => {\n",
       "    // Base Styles.\n",
       "    const opacity = minCanvasSize < 300 ? 0.6 - minCanvasSize / 1000 : 0.1;\n",
       "    c.fillStyle = getColor(mark, opacity);\n",
       "    c.strokeStyle = getColor(mark);\n",
       "    c.shadowColor = getColor(mark);\n",
       "    c.shadowBlur = 8 / cellInset;\n",
       "    c.lineWidth = 1 / cellInset;\n",
       "\n",
       "    // Outer circle.\n",
       "    c.save();\n",
       "    c.beginPath();\n",
       "    c.arc(50, 50, 50, 2 * Math.PI, false);\n",
       "    c.closePath();\n",
       "    c.lineWidth *= 4;\n",
       "    c.stroke();\n",
       "    c.fill();\n",
       "    c.restore();\n",
       "\n",
       "    // Inner circle.\n",
       "    c.beginPath();\n",
       "    c.arc(50, 50, 40, 2 * Math.PI, false);\n",
       "    c.closePath();\n",
       "    c.stroke();\n",
       "\n",
       "    // Kaggle &quot;K&quot;.\n",
       "    if (mark === 1) {\n",
       "      const scale = 0.54;\n",
       "      c.save();\n",
       "      c.translate(23, 23);\n",
       "      c.scale(scale, scale);\n",
       "      c.lineWidth /= scale;\n",
       "      c.shadowBlur /= scale;\n",
       "      c.stroke(kPath);\n",
       "      c.restore();\n",
       "    }\n",
       "\n",
       "    // Kaggle &quot;Goose&quot;.\n",
       "    if (mark === 2) {\n",
       "      const scale = 0.6;\n",
       "      c.save();\n",
       "      c.translate(24, 28);\n",
       "      c.scale(scale, scale);\n",
       "      c.lineWidth /= scale;\n",
       "      c.shadowBlur /= scale;\n",
       "      c.stroke(goose1Path);\n",
       "      c.stroke(goose2Path);\n",
       "      c.stroke(goose3Path);\n",
       "      c.beginPath();\n",
       "      c.arc(38.5, 18.6, 2.7, 0, Math.PI * 2, false);\n",
       "      c.closePath();\n",
       "      c.fill();\n",
       "      c.restore();\n",
       "    }\n",
       "  };\n",
       "\n",
       "  for (let i = 0; i < board.length; i++) {\n",
       "    const [row, col] = getRowCol(i);\n",
       "    if (board[i] === 0) continue;\n",
       "    // Easing In.\n",
       "    let yFrame = Math.min(\n",
       "      (columns * Math.pow(frame, 3)) / Math.floor(i / columns),\n",
       "      1\n",
       "    );\n",
       "\n",
       "    if (\n",
       "      step > 1 &&\n",
       "      environment.steps[step - 1][0].observation.board[i] === board[i]\n",
       "    ) {\n",
       "      yFrame = 1;\n",
       "    }\n",
       "\n",
       "    c.save();\n",
       "    c.translate(\n",
       "      xOffset + cellSize * col + (cellSize - cellSize * cellInset) / 2,\n",
       "      yOffset +\n",
       "        yFrame * (cellSize * row) +\n",
       "        (cellSize - cellSize * cellInset) / 2\n",
       "    );\n",
       "    c.scale(pieceScale * cellInset, pieceScale * cellInset);\n",
       "    drawPiece(board[i]);\n",
       "    c.restore();\n",
       "  }\n",
       "\n",
       "  // Background Gradient.\n",
       "  const bgRadius = (Math.min(rows, columns) * cellSize) / 2;\n",
       "  const bgStyle = c.createRadialGradient(\n",
       "    xOffset + (cellSize * columns) / 2,\n",
       "    yOffset + (cellSize * rows) / 2,\n",
       "    0,\n",
       "    xOffset + (cellSize * columns) / 2,\n",
       "    yOffset + (cellSize * rows) / 2,\n",
       "    bgRadius\n",
       "  );\n",
       "  bgStyle.addColorStop(0, &quot;#000B49&quot;);\n",
       "  bgStyle.addColorStop(1, &quot;#000B2A&quot;);\n",
       "\n",
       "  // Render the board overlay.\n",
       "  c.beginPath();\n",
       "  c.rect(0, 0, canvas.width, canvas.height);\n",
       "  c.closePath();\n",
       "  c.shadowBlur = 0;\n",
       "  for (let i = 0; i < board.length; i++) {\n",
       "    drawCellCircle(i);\n",
       "    c.closePath();\n",
       "  }\n",
       "  c.fillStyle = bgStyle;\n",
       "  c.fill(&quot;evenodd&quot;);\n",
       "\n",
       "  // Render the board overlay cell outlines.\n",
       "  for (let i = 0; i < board.length; i++) {\n",
       "    c.beginPath();\n",
       "    drawCellCircle(i);\n",
       "    c.strokeStyle = &quot;#0361B2&quot;;\n",
       "    c.lineWidth = 1;\n",
       "    c.stroke();\n",
       "    c.closePath();\n",
       "  }\n",
       "\n",
       "  const drawLine = (fromCell, toCell) => {\n",
       "    if (frame < 0.5) return;\n",
       "    const lineFrame = (frame - 0.5) / 0.5;\n",
       "    const x1 = xOffset + (fromCell % columns) * cellSize + cellSize / 2;\n",
       "    const x2 =\n",
       "      x1 +\n",
       "      lineFrame *\n",
       "        (xOffset + ((toCell % columns) * cellSize + cellSize / 2) - x1);\n",
       "    const y1 =\n",
       "      yOffset + Math.floor(fromCell / columns) * cellSize + cellSize / 2;\n",
       "    const y2 =\n",
       "      y1 +\n",
       "      lineFrame *\n",
       "        (yOffset + Math.floor(toCell / columns) * cellSize + cellSize / 2 - y1);\n",
       "    c.beginPath();\n",
       "    c.lineCap = &quot;round&quot;;\n",
       "    c.lineWidth = 4;\n",
       "    c.strokeStyle = getColor(board[fromCell]);\n",
       "    c.shadowBlur = 8;\n",
       "    c.shadowColor = getColor(board[fromCell]);\n",
       "    c.moveTo(x1, y1);\n",
       "    c.lineTo(x2, y2);\n",
       "    c.stroke();\n",
       "  };\n",
       "\n",
       "  // Generate a graph of the board.\n",
       "  const getCell = (cell, rowOffset, columnOffset) => {\n",
       "    const row = Math.floor(cell / columns) + rowOffset;\n",
       "    const col = (cell % columns) + columnOffset;\n",
       "    if (row < 0 || row >= rows || col < 0 || col >= columns) return -1;\n",
       "    return col + row * columns;\n",
       "  };\n",
       "  const makeNode = cell => {\n",
       "    const node = { cell, directions: [], value: board[cell] };\n",
       "    for (let r = -1; r <= 1; r++) {\n",
       "      for (let c = -1; c <= 1; c++) {\n",
       "        if (r === 0 && c === 0) continue;\n",
       "        node.directions.push(getCell(cell, r, c));\n",
       "      }\n",
       "    }\n",
       "    return node;\n",
       "  };\n",
       "  const graph = board.map((_, i) => makeNode(i));\n",
       "\n",
       "  // Check for any wins!\n",
       "  const getSequence = (node, direction) => {\n",
       "    const sequence = [node.cell];\n",
       "    while (sequence.length < inarow) {\n",
       "      const next = graph[node.directions[direction]];\n",
       "      if (!next || node.value !== next.value || next.value === 0) return;\n",
       "      node = next;\n",
       "      sequence.push(node.cell);\n",
       "    }\n",
       "    return sequence;\n",
       "  };\n",
       "\n",
       "  // Check all nodes.\n",
       "  for (let i = 0; i < board.length; i++) {\n",
       "    // Check all directions (not the most efficient).\n",
       "    for (let d = 0; d < 8; d++) {\n",
       "      const seq = getSequence(graph[i], d);\n",
       "      if (seq) {\n",
       "        drawLine(seq[0], seq[inarow - 1]);\n",
       "        i = board.length;\n",
       "        break;\n",
       "      }\n",
       "    }\n",
       "  }\n",
       "\n",
       "  // Upgrade the legend.\n",
       "  if (agents.length && (!agents[0].color || !agents[0].image)) {\n",
       "    const getPieceImage = mark => {\n",
       "      const pieceCanvas = document.createElement(&quot;canvas&quot;);\n",
       "      parent.appendChild(pieceCanvas);\n",
       "      pieceCanvas.style.marginLeft = &quot;10000px&quot;;\n",
       "      pieceCanvas.width = 100;\n",
       "      pieceCanvas.height = 100;\n",
       "      c = pieceCanvas.getContext(&quot;2d&quot;);\n",
       "      c.translate(10, 10);\n",
       "      c.scale(0.8, 0.8);\n",
       "      drawPiece(mark);\n",
       "      const dataUrl = pieceCanvas.toDataURL();\n",
       "      parent.removeChild(pieceCanvas);\n",
       "      return dataUrl;\n",
       "    };\n",
       "\n",
       "    agents.forEach(agent => {\n",
       "      agent.color = getColor(agent.index + 1);\n",
       "      agent.image = getPieceImage(agent.index + 1);\n",
       "    });\n",
       "    update({ agents });\n",
       "  }\n",
       "};\n",
       "\n",
       "\n",
       "    \n",
       "    </script>\n",
       "    <script>\n",
       "      const h = htm.bind(preact.h);\n",
       "      const { useContext, useEffect, useRef, useState } = preactHooks;\n",
       "      const styled = window.styled.default;\n",
       "\n",
       "      const Context = preact.createContext({});\n",
       "\n",
       "      const Loading = styled.div`\n",
       "        animation: rotate360 1.1s infinite linear;\n",
       "        border: 8px solid rgba(255, 255, 255, 0.2);\n",
       "        border-left-color: #0cb1ed;\n",
       "        border-radius: 50%;\n",
       "        height: 40px;\n",
       "        position: relative;\n",
       "        transform: translateZ(0);\n",
       "        width: 40px;\n",
       "\n",
       "        @keyframes rotate360 {\n",
       "          0% {\n",
       "            transform: rotate(0deg);\n",
       "          }\n",
       "          100% {\n",
       "            transform: rotate(360deg);\n",
       "          }\n",
       "        }\n",
       "      `;\n",
       "\n",
       "      const Logo = styled(\n",
       "        (props) => h`\n",
       "        <a href=&quot;https://kaggle.com&quot; target=&quot;_blank&quot; className=${props.className}>\n",
       "          <svg width=&quot;62px&quot; height=&quot;20px&quot; viewBox=&quot;0 0 62 24&quot; version=&quot;1.1&quot; xmlns=&quot;http://www.w3.org/2000/svg&quot;>\n",
       "            <g fill=&quot;#1EBEFF&quot; fill-rule=&quot;nonzero&quot;>\n",
       "              <path d=&quot;M10.2,17.8c0,0.1-0.1,0.1-0.2,0.1H7.7c-0.1,0-0.3-0.1-0.4-0.2l-3.8-4.9l-1.1,1v3.8 c0,0.2-0.1,0.3-0.3,0.3H0.3c-0.2,0-0.3-0.1-0.3-0.3V0.3C0.1,0.1,0.2,0,0.3,0h1.8c0.2,0,0.3,0.1,0.3,0.3V11L7,6.3 c0.1-0.1,0.2-0.2,0.4-0.2h2.4c0.1,0,0.2,0,0.2,0.1c0,0.1,0,0.2,0,0.2l-4.9,4.7l5.1,6.3C10.2,17.6,10.2,17.7,10.2,17.8z&quot;/>\n",
       "              <path d=&quot;M19.6,17.9h-1.8c-0.2,0-0.3-0.1-0.3-0.3v-0.4c-0.8,0.6-1.8,0.9-3,0.9c-1.1,0-2-0.3-2.8-1 c-0.8-0.7-1.2-1.6-1.2-2.7c0-1.7,1.1-2.9,3.2-3.5c0.8-0.2,2.1-0.5,3.8-0.6c0.1-0.6-0.1-1.2-0.5-1.7c-0.4-0.5-1-0.7-1.7-0.7 c-1,0-2,0.4-3,1C12.2,9.1,12.1,9.1,12,9l-0.9-1.3C11,7.5,11,7.4,11.1,7.3c1.3-0.9,2.7-1.4,4.2-1.4c1.1,0,2.1,0.3,2.8,0.8 c1.1,0.8,1.7,2,1.7,3.7v7.3C19.9,17.8,19.8,17.9,19.6,17.9z M17.5,12.4c-1.7,0.2-2.9,0.4-3.5,0.7c-0.9,0.4-1.2,0.9-1.1,1.6 c0.1,0.4,0.2,0.7,0.6,0.9c0.3,0.2,0.7,0.4,1.1,0.4c1.2,0.1,2.2-0.2,2.9-1V12.4z&quot;/>\n",
       "              <path d=&quot;M30.6,22.5c-0.9,1-2.3,1.5-4,1.5c-1,0-2-0.3-2.9-0.8c-0.2-0.1-0.4-0.3-0.7-0.5 c-0.3-0.2-0.6-0.5-0.9-0.7c-0.1-0.1-0.1-0.2,0-0.4l1.2-1.2c0.1-0.1,0.1-0.1,0.2-0.1c0.1,0,0.1,0,0.2,0.1c1,1,1.9,1.5,2.8,1.5 c2.1,0,3.2-1.1,3.2-3.3v-1.4c-0.8,0.7-1.9,1-3.3,1c-1.7,0-3-0.6-4-1.9c-0.8-1.1-1.3-2.5-1.3-4.2c0-1.6,0.4-3,1.2-4.1 c0.9-1.3,2.3-2,4-2c1.3,0,2.4,0.3,3.3,1V6.4c0-0.2,0.1-0.3,0.3-0.3h1.8c0.2,0,0.3,0.1,0.3,0.3v11.7C32,20,31.5,21.5,30.6,22.5z M29.7,9.9c-0.4-1.1-1.4-1.7-3-1.7c-2,0-3.1,1.3-3.1,3.8c0,1.4,0.3,2.4,1,3.1c0.5,0.5,1.2,0.8,2,0.8c1.6,0,2.7-0.6,3.1-1.7V9.9z&quot;/>\n",
       "              <path d=&quot;M42.9,22.5c-0.9,1-2.3,1.5-4,1.5c-1,0-2-0.3-2.9-0.8c-0.2-0.1-0.4-0.3-0.7-0.5 c-0.3-0.2-0.6-0.5-0.9-0.7c-0.1-0.1-0.1-0.2,0-0.4l1.2-1.2c0.1-0.1,0.1-0.1,0.2-0.1c0.1,0,0.1,0,0.2,0.1c1,1,1.9,1.5,2.8,1.5 c2.1,0,3.2-1.1,3.2-3.3v-1.4c-0.8,0.7-1.9,1-3.3,1c-1.7,0-3-0.6-4-1.9c-0.8-1.1-1.3-2.5-1.3-4.2c0-1.6,0.4-3,1.2-4.1 c0.9-1.3,2.3-2,4-2c1.3,0,2.4,0.3,3.3,1V6.4c0-0.2,0.1-0.3,0.3-0.3H44c0.2,0,0.3,0.1,0.3,0.3v11.7C44.3,20,43.8,21.5,42.9,22.5z M42,9.9c-0.4-1.1-1.4-1.7-3-1.7c-2,0-3.1,1.3-3.1,3.8c0,1.4,0.3,2.4,1,3.1c0.5,0.5,1.2,0.8,2,0.8c1.6,0,2.7-0.6,3.1-1.7L42,9.9 L42,9.9z&quot;/>\n",
       "              <path d=&quot;M48.3,17.9h-1.8c-0.2,0-0.3-0.1-0.3-0.3V0.3c0-0.2,0.1-0.3,0.3-0.3h1.8c0.2,0,0.3,0.1,0.3,0.3 v17.3C48.5,17.8,48.5,17.9,48.3,17.9z&quot;/>\n",
       "              <path d=&quot;M61.4,12.6c0,0.2-0.1,0.3-0.3,0.3h-8.5c0.1,0.9,0.5,1.6,1.1,2.2c0.7,0.6,1.6,0.9,2.7,0.9 c1,0,1.8-0.3,2.6-0.8c0.2-0.1,0.3-0.1,0.4,0l1.2,1.3c0.1,0.1,0.1,0.3,0,0.4c-1.3,0.9-2.7,1.4-4.4,1.4c-1.8,0-3.3-0.6-4.4-1.8 c-1.1-1.2-1.7-2.7-1.7-4.5c0-1.7,0.6-3.2,1.7-4.4c1-1.1,2.4-1.6,4.1-1.6c1.6,0,2.9,0.6,4,1.7c1.1,1.2,1.6,2.6,1.5,4.4L61.4,12.6 z M58,8.7c-0.6-0.5-1.3-0.8-2.1-0.8c-0.8,0-1.5,0.3-2.1,0.8c-0.6,0.5-1,1.2-1.1,2H59C59,9.9,58.6,9.3,58,8.7z&quot;/>\n",
       "            </g>\n",
       "          </svg>\n",
       "        </a>\n",
       "      `\n",
       "      )`\n",
       "        display: inline-flex;\n",
       "      `;\n",
       "\n",
       "      const Header = styled((props) => {\n",
       "        const { environment } = useContext(Context);\n",
       "\n",
       "        return h`<div className=${props.className} >\n",
       "          <${Logo} />\n",
       "          <span><b>Left / Right Arrow:</b> Increase / Decrease Step</span><span><b>0-9 Row Keys:</b> Playback Speed</span><span><b>Space:</b> Pause / Play</span>\n",
       "          ${environment.title}\n",
       "        </div>`;\n",
       "      })`\n",
       "        align-items: center;\n",
       "        border-bottom: 4px solid #212121;\n",
       "        box-sizing: border-box;\n",
       "        color: #fff;\n",
       "        display: flex;\n",
       "        flex: 0 0 36px;\n",
       "        font-size: 14px;\n",
       "        justify-content: space-between;\n",
       "        padding: 0 8px;\n",
       "        width: 100%;\n",
       "      `;\n",
       "\n",
       "      const Renderer = styled((props) => {\n",
       "        const context = useContext(Context);\n",
       "        const { animate, debug, playing, renderer, speed } = context;\n",
       "        const ref = preact.createRef();\n",
       "\n",
       "        useEffect(async () => {\n",
       "          if (!ref.current) return;\n",
       "\n",
       "          const renderFrame = async (start, step, lastFrame) => {\n",
       "            if (step !== context.step) return;\n",
       "            if (lastFrame === 1) {\n",
       "              if (!animate) return;\n",
       "              start = Date.now();\n",
       "            }\n",
       "            const frame =\n",
       "              playing || animate\n",
       "                ? Math.min((Date.now() - start) / speed, 1)\n",
       "                : 1;\n",
       "            try {\n",
       "              if (debug) console.time(&quot;render&quot;);\n",
       "              await renderer({\n",
       "                ...context,\n",
       "                frame,\n",
       "                height: ref.current.clientHeight,\n",
       "                hooks: preactHooks,\n",
       "                parent: ref.current,\n",
       "                preact,\n",
       "                styled,\n",
       "                width: ref.current.clientWidth,\n",
       "              });\n",
       "            } catch (error) {\n",
       "              if (debug) console.error(error);\n",
       "              console.log({ ...context, frame, error });\n",
       "            } finally {\n",
       "              if (debug) console.timeEnd(&quot;render&quot;);\n",
       "            }\n",
       "            window.requestAnimationFrame(() => renderFrame(start, step, frame));\n",
       "          };\n",
       "\n",
       "          await renderFrame(Date.now(), context.step);\n",
       "        }, [ref.current, context.step, context.renderer]);\n",
       "\n",
       "        return h`<div className=${props.className} ref=${ref} />`;\n",
       "      })`\n",
       "        align-items: center;\n",
       "        box-sizing: border-box;\n",
       "        display: flex;\n",
       "        height: 100%;\n",
       "        left: 0;\n",
       "        justify-content: center;\n",
       "        position: absolute;\n",
       "        top: 0;\n",
       "        width: 100%;\n",
       "      `;\n",
       "\n",
       "      const Processing = styled((props) => {\n",
       "        const { processing } = useContext(Context);\n",
       "        const text = processing === true ? &quot;Processing...&quot; : processing;\n",
       "        return h`<div className=${props.className}>${text}</div>`;\n",
       "      })`\n",
       "        bottom: 0;\n",
       "        color: #fff;\n",
       "        font-size: 12px;\n",
       "        left: 0;\n",
       "        line-height: 24px;\n",
       "        position: absolute;\n",
       "        text-align: center;\n",
       "        width: 100%;\n",
       "      `;\n",
       "\n",
       "      const Viewer = styled((props) => {\n",
       "        const { processing } = useContext(Context);\n",
       "        return h`<div className=${props.className}>\n",
       "          <${Renderer} />\n",
       "          ${processing && h`<${Processing} />`}\n",
       "        </div>`;\n",
       "      })`\n",
       "        background-color: #000b2a;\n",
       "        background-image: radial-gradient(\n",
       "          circle closest-side,\n",
       "          #000b49,\n",
       "          #000b2a\n",
       "        );\n",
       "        display: flex;\n",
       "        flex: 1;\n",
       "        overflow: hidden;\n",
       "        position: relative;\n",
       "        width: 100%;\n",
       "      `;\n",
       "\n",
       "      // Partitions the elements of arr into subarrays of max length num.\n",
       "      const groupIntoSets = (arr, num) => {\n",
       "        const sets = [];\n",
       "        arr.forEach(a => {\n",
       "          if (sets.length === 0 || sets[sets.length - 1].length === num) {\n",
       "            sets.push([]);\n",
       "          }\n",
       "          sets[sets.length - 1].push(a);\n",
       "        });\n",
       "        return sets;\n",
       "      }\n",
       "\n",
       "      // Expects `width` input prop to set proper max-width for agent name span.\n",
       "      const Legend = styled((props) => {\n",
       "        const { agents, legend } = useContext(Context);\n",
       "\n",
       "        const agentPairs = groupIntoSets(agents.sort((a, b) => a.index - b.index), 2);\n",
       "\n",
       "        return h`<div className=${props.className}>\n",
       "          ${agentPairs.map(agentList =>\n",
       "            h`<ul>\n",
       "                ${agentList.map(a =>\n",
       "                  h`<li key=${a.id} title=&quot;id: ${a.id}&quot; style=&quot;color:${a.color || &quot;#FFF&quot;}&quot;>\n",
       "                      ${a.image && h`<img src=${a.image} />`}\n",
       "                      <span>${a.name}</span>\n",
       "                    </li>`\n",
       "                )}\n",
       "              </ul>`)}\n",
       "        </div>`;\n",
       "      })`\n",
       "        background-color: #000b2a;\n",
       "        font-family: sans-serif;\n",
       "        font-size: 14px;\n",
       "        height: 48px;\n",
       "        width: 100%;\n",
       "\n",
       "        ul {\n",
       "          align-items: center;\n",
       "          display: flex;\n",
       "          flex-direction: row;\n",
       "          justify-content: center;\n",
       "        }\n",
       "\n",
       "        li {\n",
       "          align-items: center;\n",
       "          display: inline-flex;\n",
       "          transition: color 1s;\n",
       "        }\n",
       "\n",
       "        span {\n",
       "          max-width: ${p => (p.width || 400) * 0.5 - 36}px;\n",
       "          overflow: hidden;\n",
       "          text-overflow: ellipsis;\n",
       "          white-space: nowrap;\n",
       "        }\n",
       "\n",
       "        img {\n",
       "          height: 24px;\n",
       "          margin-left: 4px;\n",
       "          margin-right: 4px;\n",
       "          width: 24px;\n",
       "        }\n",
       "      `;\n",
       "\n",
       "      const StepInput = styled.input.attrs({\n",
       "        type: &quot;range&quot;,\n",
       "      })`\n",
       "        appearance: none;\n",
       "        background: rgba(255, 255, 255, 0.15);\n",
       "        border-radius: 2px;\n",
       "        display: block;\n",
       "        flex: 1;\n",
       "        height: 4px;\n",
       "        opacity: 0.8;\n",
       "        outline: none;\n",
       "        transition: opacity 0.2s;\n",
       "        width: 100%;\n",
       "\n",
       "        &:hover {\n",
       "          opacity: 1;\n",
       "        }\n",
       "\n",
       "        &::-webkit-slider-thumb {\n",
       "          appearance: none;\n",
       "          background: #1ebeff;\n",
       "          border-radius: 100%;\n",
       "          cursor: pointer;\n",
       "          height: 12px;\n",
       "          margin: 0;\n",
       "          position: relative;\n",
       "          width: 12px;\n",
       "\n",
       "          &::after {\n",
       "            content: &quot;&quot;;\n",
       "            position: absolute;\n",
       "            top: 0px;\n",
       "            left: 0px;\n",
       "            width: 200px;\n",
       "            height: 8px;\n",
       "            background: green;\n",
       "          }\n",
       "        }\n",
       "      `;\n",
       "\n",
       "      const PlayButton = styled.button`\n",
       "        align-items: center;\n",
       "        background: none;\n",
       "        border: none;\n",
       "        color: white;\n",
       "        cursor: pointer;\n",
       "        display: flex;\n",
       "        flex: 0 0 56px;\n",
       "        font-size: 20px;\n",
       "        height: 40px;\n",
       "        justify-content: center;\n",
       "        opacity: 0.8;\n",
       "        outline: none;\n",
       "        transition: opacity 0.2s;\n",
       "\n",
       "        &:hover {\n",
       "          opacity: 1;\n",
       "        }\n",
       "      `;\n",
       "\n",
       "      const StepCount = styled.span`\n",
       "        align-items: center;\n",
       "        color: white;\n",
       "        display: flex;\n",
       "        font-size: 14px;\n",
       "        justify-content: center;\n",
       "        opacity: 0.8;\n",
       "        padding: 0 16px;\n",
       "        pointer-events: none;\n",
       "      `;\n",
       "\n",
       "      const Controls = styled((props) => {\n",
       "        const { environment, pause, play, playing, setStep, step } = useContext(\n",
       "          Context\n",
       "        );\n",
       "        const value = step + 1;\n",
       "        const onClick = () => (playing ? pause() : play());\n",
       "        const onInput = (e) => {\n",
       "          pause();\n",
       "          setStep(parseInt(e.target.value) - 1);\n",
       "        };\n",
       "\n",
       "        return h`\n",
       "          <div className=${props.className}>\n",
       "            <${PlayButton} onClick=${onClick}><svg xmlns=&quot;http://www.w3.org/2000/svg&quot; width=&quot;24px&quot; height=&quot;24px&quot; viewBox=&quot;0 0 24 24&quot; fill=&quot;#FFFFFF&quot;>${\n",
       "          playing\n",
       "            ? h`<path d=&quot;M6 19h4V5H6v14zm8-14v14h4V5h-4z&quot;/><path d=&quot;M0 0h24v24H0z&quot; fill=&quot;none&quot;/>`\n",
       "            : h`<path d=&quot;M8 5v14l11-7z&quot;/><path d=&quot;M0 0h24v24H0z&quot; fill=&quot;none&quot;/>`\n",
       "        }</svg><//>\n",
       "            <${StepInput} min=&quot;1&quot; max=${\n",
       "          environment.steps.length\n",
       "        } value=&quot;${value}&quot; onInput=${onInput} />\n",
       "            <${StepCount}>${value} / ${environment.steps.length}<//>\n",
       "          </div>\n",
       "        `;\n",
       "      })`\n",
       "        align-items: center;\n",
       "        border-top: 4px solid #212121;\n",
       "        display: flex;\n",
       "        flex: 0 0 44px;\n",
       "        width: 100%;\n",
       "      `;\n",
       "\n",
       "      const Info = styled((props) => {\n",
       "        const {\n",
       "          environment,\n",
       "          playing,\n",
       "          step,\n",
       "          speed,\n",
       "          animate,\n",
       "          header,\n",
       "          controls,\n",
       "          settings,\n",
       "        } = useContext(Context);\n",
       "\n",
       "        return h`\n",
       "          <div className=${props.className}>\n",
       "            info:\n",
       "            step(${step}),\n",
       "            playing(${playing ? &quot;T&quot; : &quot;F&quot;}),\n",
       "            speed(${speed}),\n",
       "            animate(${animate ? &quot;T&quot; : &quot;F&quot;})\n",
       "          </div>`;\n",
       "      })`\n",
       "        color: #888;\n",
       "        font-family: monospace;\n",
       "        font-size: 12px;\n",
       "      `;\n",
       "\n",
       "      const Settings = styled((props) => {\n",
       "        const { environment, pause, play, playing, setStep, step } = useContext(\n",
       "          Context\n",
       "        );\n",
       "\n",
       "        return h`\n",
       "          <div className=${props.className}>\n",
       "            <${Info} />\n",
       "          </div>\n",
       "        `;\n",
       "      })`\n",
       "        background: #fff;\n",
       "        border-top: 4px solid #212121;\n",
       "        box-sizing: border-box;\n",
       "        padding: 20px;\n",
       "        width: 100%;\n",
       "\n",
       "        h1 {\n",
       "          font-size: 20px;\n",
       "        }\n",
       "      `;\n",
       "\n",
       "      const Player = styled((props) => {\n",
       "        const context = useContext(Context);\n",
       "        const { agents, controls, header, legend, loading, settings, width } = context;\n",
       "        return h`\n",
       "          <div className=${props.className}>\n",
       "            ${loading && h`<${Loading} />`}\n",
       "            ${!loading && header && h`<${Header} />`}\n",
       "            ${!loading && h`<${Viewer} />`}\n",
       "            ${!loading && legend && h`<${Legend} width=${width}/>`}\n",
       "            ${!loading && controls && h`<${Controls} />`}\n",
       "            ${!loading && settings && h`<${Settings} />`}\n",
       "          </div>`;\n",
       "      })`\n",
       "        align-items: center;\n",
       "        background: #212121;\n",
       "        border: 4px solid #212121;\n",
       "        box-sizing: border-box;\n",
       "        display: flex;\n",
       "        flex-direction: column;\n",
       "        height: 100%;\n",
       "        justify-content: center;\n",
       "        position: relative;\n",
       "        width: 100%;\n",
       "      `;\n",
       "\n",
       "      const App = () => {\n",
       "        const renderCountRef = useRef(0);\n",
       "        const [_, setRenderCount] = useState(0);\n",
       "\n",
       "        // These are bindings to the 0-9 keys and are milliseconds of timeout per step\n",
       "        const speeds = [\n",
       "          0,\n",
       "          3000,\n",
       "          1000,\n",
       "          500,\n",
       "          333, // Default\n",
       "          200,\n",
       "          100,\n",
       "          50,\n",
       "          25,\n",
       "          10,\n",
       "        ];\n",
       "\n",
       "        const contextRef = useRef({\n",
       "          animate: false,\n",
       "          agents: [],\n",
       "          controls: false,\n",
       "          debug: false,\n",
       "          environment: { steps: [], info: {} },\n",
       "          header: window.innerHeight >= 600,\n",
       "          height: window.innerHeight,\n",
       "          interactive: false,\n",
       "          legend: true,\n",
       "          loading: false,\n",
       "          playing: false,\n",
       "          processing: false,\n",
       "          renderer: () => &quot;DNE&quot;,\n",
       "          settings: false,\n",
       "          speed: speeds[4],\n",
       "          step: 0,\n",
       "          width: window.innerWidth,\n",
       "        });\n",
       "\n",
       "        // Context helpers.\n",
       "        const rerender = (contextRef.current.rerender = () =>\n",
       "          setRenderCount((renderCountRef.current += 1)));\n",
       "        const setStep = (contextRef.current.setStep = (newStep) => {\n",
       "          contextRef.current.step = newStep;\n",
       "          rerender();\n",
       "        });\n",
       "        const setPlaying = (contextRef.current.setPlaying = (playing) => {\n",
       "          contextRef.current.playing = playing;\n",
       "          rerender();\n",
       "        });\n",
       "        const pause = (contextRef.current.pause = () => setPlaying(false));\n",
       "\n",
       "        const playNext = () => {\n",
       "          const context = contextRef.current;\n",
       "\n",
       "          if (\n",
       "            context.playing &&\n",
       "            context.step < context.environment.steps.length - 1\n",
       "          ) {\n",
       "            setStep(context.step + 1);\n",
       "            play(true);\n",
       "          } else {\n",
       "            pause();\n",
       "          }\n",
       "        };\n",
       "\n",
       "        const play = (contextRef.current.play = (continuing) => {\n",
       "          const context = contextRef.current;\n",
       "          if (context.playing && !continuing) return;\n",
       "          if (!context.playing) setPlaying(true);\n",
       "          if (\n",
       "            !continuing &&\n",
       "            context.step === context.environment.steps.length - 1\n",
       "          ) {\n",
       "            setStep(0);\n",
       "          }\n",
       "          setTimeout(playNext, context.speed);\n",
       "        });\n",
       "\n",
       "        const updateContext = (o) => {\n",
       "          const context = contextRef.current;\n",
       "          Object.assign(context, o, {\n",
       "            environment: { ...context.environment, ...(o.environment || {}) },\n",
       "          });\n",
       "          rerender();\n",
       "        };\n",
       "\n",
       "        // First time setup.\n",
       "        useEffect(() => {\n",
       "          // Timeout is used to ensure useEffect renders once.\n",
       "          setTimeout(() => {\n",
       "            // Initialize context with window.kaggle.\n",
       "            updateContext(window.kaggle || {});\n",
       "\n",
       "            if (window.kaggle.playing) {\n",
       "                play(true);\n",
       "            }\n",
       "\n",
       "            // Listen for messages received to update the context.\n",
       "            window.addEventListener(\n",
       "              &quot;message&quot;,\n",
       "              (event) => {\n",
       "                // Ensure the environment names match before updating.\n",
       "                try {\n",
       "                  if (\n",
       "                    event.data.environment.name ==\n",
       "                    contextRef.current.environment.name\n",
       "                  ) {\n",
       "                    updateContext(event.data);\n",
       "                  }\n",
       "                } catch {}\n",
       "              },\n",
       "              false\n",
       "            );\n",
       "            // Listen for keyboard commands.\n",
       "            window.addEventListener(\n",
       "              &quot;keydown&quot;,\n",
       "              (event) => {\n",
       "                const {\n",
       "                  interactive,\n",
       "                  isInteractive,\n",
       "                  playing,\n",
       "                  step,\n",
       "                  environment,\n",
       "                } = contextRef.current;\n",
       "                const key = event.keyCode;\n",
       "                const zero_key = 48\n",
       "                const nine_key = 57\n",
       "                if (\n",
       "                  interactive ||\n",
       "                  isInteractive() ||\n",
       "                  (key !== 32 && key !== 37 && key !== 39 && !(key >= zero_key && key <= nine_key))\n",
       "                )\n",
       "                  return;\n",
       "\n",
       "                if (key === 32) {\n",
       "                  playing ? pause() : play();\n",
       "                } else if (key === 39) {\n",
       "                  contextRef.current.playing = false;\n",
       "                  if (step < environment.steps.length - 1) setStep(step + 1);\n",
       "                  rerender();\n",
       "                } else if (key === 37) {\n",
       "                  contextRef.current.playing = false;\n",
       "                  if (step > 0) setStep(step - 1);\n",
       "                  rerender();\n",
       "                } else if (key >= zero_key && key <= nine_key) {\n",
       "                  contextRef.current.speed = speeds[key - zero_key];\n",
       "                }\n",
       "                event.preventDefault();\n",
       "                return false;\n",
       "              },\n",
       "              false\n",
       "            );\n",
       "          }, 1);\n",
       "        }, []);\n",
       "\n",
       "        if (contextRef.current.debug) {\n",
       "          console.log(&quot;context&quot;, contextRef.current);\n",
       "        }\n",
       "\n",
       "        // Ability to update context.\n",
       "        contextRef.current.update = updateContext;\n",
       "\n",
       "        // Ability to communicate with ipython.\n",
       "        const execute = (contextRef.current.execute = (source) =>\n",
       "          new Promise((resolve, reject) => {\n",
       "            try {\n",
       "              window.parent.IPython.notebook.kernel.execute(source, {\n",
       "                iopub: {\n",
       "                  output: (resp) => {\n",
       "                    const type = resp.msg_type;\n",
       "                    if (type === &quot;stream&quot;) return resolve(resp.content.text);\n",
       "                    if (type === &quot;error&quot;) return reject(new Error(resp.evalue));\n",
       "                    return reject(new Error(&quot;Unknown message type: &quot; + type));\n",
       "                  },\n",
       "                },\n",
       "              });\n",
       "            } catch (e) {\n",
       "              reject(new Error(&quot;IPython Unavailable: &quot; + e));\n",
       "            }\n",
       "          }));\n",
       "\n",
       "        // Ability to return an action from an interactive session.\n",
       "        contextRef.current.act = (action) => {\n",
       "          const id = contextRef.current.environment.id;\n",
       "          updateContext({ processing: true });\n",
       "          execute(`\n",
       "            import json\n",
       "            from kaggle_environments import interactives\n",
       "            if &quot;${id}&quot; in interactives:\n",
       "                action = json.loads('${JSON.stringify(action)}')\n",
       "                env, trainer = interactives[&quot;${id}&quot;]\n",
       "                trainer.step(action)\n",
       "                print(json.dumps(env.steps))`)\n",
       "            .then((resp) => {\n",
       "              try {\n",
       "                updateContext({\n",
       "                  processing: false,\n",
       "                  environment: { steps: JSON.parse(resp) },\n",
       "                });\n",
       "                play();\n",
       "              } catch (e) {\n",
       "                updateContext({ processing: resp.split(&quot;\\n&quot;)[0] });\n",
       "                console.error(resp, e);\n",
       "              }\n",
       "            })\n",
       "            .catch((e) => console.error(e));\n",
       "        };\n",
       "\n",
       "        // Check if currently interactive.\n",
       "        contextRef.current.isInteractive = () => {\n",
       "          const context = contextRef.current;\n",
       "          const steps = context.environment.steps;\n",
       "          return (\n",
       "            context.interactive &&\n",
       "            !context.processing &&\n",
       "            context.step === steps.length - 1 &&\n",
       "            steps[context.step].some((s) => s.status === &quot;ACTIVE&quot;)\n",
       "          );\n",
       "        };\n",
       "\n",
       "        return h`\n",
       "          <${Context.Provider} value=${contextRef.current}>\n",
       "            <${Player} />\n",
       "          <//>`;\n",
       "      };\n",
       "\n",
       "      preact.render(h`<${App} />`, document.body);\n",
       "    </script>\n",
       "  </body>\n",
       "</html>\n",
       "\" width=\"300\" height=\"300\" frameborder=\"0\"></iframe> "
      ],
      "text/plain": [
       "<IPython.core.display.HTML object>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "# Two random agents play one game round\n",
    "env.run([\"random\", \"random\"])\n",
    "\n",
    "# AS: added code line to testing agent types\n",
    "# env.run([\"negamax\", \"negamax\"])\n",
    "# env.run([\"random\", \"negamax\"])\n",
    "\n",
    "# Show the game\n",
    "env.render(mode=\"ipython\")"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "You can use the player above to view the game in detail: every move is captured and can be replayed.  _Try this now!_\n",
    "\n",
    "As you'll soon see, this information will prove incredibly useful for brainstorming ways to improve our agents.\n",
    "\n",
    "# Defining agents\n",
    "\n",
    "To participate in the competition, you'll create your own agents.  \n",
    "\n",
    "Your agent should be implemented as a Python function that accepts two arguments: `obs` and `config`.  It returns an integer with the selected column, where indexing starts at zero.  So, the returned value is one of 0-6, inclusive.\n",
    "\n",
    "We'll start with a few examples, to provide some context.  In the code cell below:\n",
    "- The first agent behaves identically to the `\"random\"` agent above.\n",
    "- The second agent always selects the middle column, whether it's valid or not!  Note that if any agent selects an invalid move, it loses the game.\n",
    "- The third agent selects the leftmost valid column."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {
    "_kg_hide-input": true
   },
   "outputs": [],
   "source": [
    "\n",
    "import random\n",
    "import numpy as np"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [],
   "source": [
    "# Selects random valid column\n",
    "def agent_random(obs, config):\n",
    "    valid_moves = [col for col in range(config.columns) if obs.board[col] == 0]\n",
    "    return random.choice(valid_moves)\n",
    "\n",
    "# Selects middle column\n",
    "def agent_middle(obs, config):\n",
    "    return config.columns//2\n",
    "\n",
    "# Selects leftmost valid column\n",
    "def agent_leftmost(obs, config):\n",
    "    valid_moves = [col for col in range(config.columns) if obs.board[col] == 0]\n",
    "    return valid_moves[0]"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "So, what are `obs` and `config`, exactly?\n",
    "\n",
    "### `obs`\n",
    "\n",
    "`obs` contains two pieces of information:\n",
    "- `obs.board` - the game board (a Python list with one item for each grid location)\n",
    "- `obs.mark` - the piece assigned to the agent (either `1` or `2`)\n",
    "\n",
    "`obs.board` is a Python list that shows the locations of the discs, where the first row appears first, followed by the second row, and so on. We use `1` to track player 1's discs, and `2` to track player 2's discs.  For instance, for this game board:\n",
    "\n",
    "<center>\n",
    "<img src=\"https://storage.googleapis.com/kaggle-media/learn/images/kSYx4Nx.png\" width=25%><br/>\n",
    "</center>\n",
    "\n",
    "`obs.board` would be `[0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 2, 2, 0, 0, 0, 0, 2, 1, 2, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 2, 1, 2, 0, 2, 0]`.\n",
    "\n",
    "### `config` \n",
    "\n",
    "`config` contains three pieces of information:\n",
    "- `config.columns` - number of columns in the game board (`7` for Connect Four)\n",
    "- `config.rows` - number of rows in the game board (`6` for Connect Four)\n",
    "- `config.inarow` - number of pieces a player needs to get in a row in order to win (`4` for Connect Four)\n",
    "\n",
    "Take the time now to investigate the three agents we've defined above.  Make sure that the code makes sense to you!\n",
    "\n",
    "# Evaluating agents\n",
    "\n",
    "To have the custom agents play one game round, we use the same `env.run()` method as before."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
       "<iframe srcdoc=\"<!--\n",
       "  Copyright 2020 Kaggle Inc\n",
       "\n",
       "  Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);\n",
       "  you may not use this file except in compliance with the License.\n",
       "  You may obtain a copy of the License at\n",
       "\n",
       "      http://www.apache.org/licenses/LICENSE-2.0\n",
       "\n",
       "  Unless required by applicable law or agreed to in writing, software\n",
       "  distributed under the License is distributed on an &quot;AS IS&quot; BASIS,\n",
       "  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n",
       "  See the License for the specific language governing permissions and\n",
       "  limitations under the License.\n",
       "-->\n",
       "<!DOCTYPE html>\n",
       "<html lang=&quot;en&quot;>\n",
       "  <head>\n",
       "    <title>Kaggle Simulation Player</title>\n",
       "    <meta name=&quot;viewport&quot; content=&quot;width=device-width,initial-scale=1&quot; />\n",
       "    <link\n",
       "      rel=&quot;stylesheet&quot;\n",
       "      href=&quot;https://cdnjs.cloudflare.com/ajax/libs/meyer-reset/2.0/reset.css&quot;\n",
       "      crossorigin=&quot;anonymous&quot;\n",
       "    />\n",
       "    <style type=&quot;text/css&quot;>\n",
       "      html,\n",
       "      body {\n",
       "        height: 100%;\n",
       "        font-family: sans-serif;\n",
       "        margin: 0px;\n",
       "      }\n",
       "      canvas {\n",
       "        /* image-rendering: -moz-crisp-edges;\n",
       "        image-rendering: -webkit-crisp-edges;\n",
       "        image-rendering: pixelated;\n",
       "        image-rendering: crisp-edges; */\n",
       "      }\n",
       "    </style>\n",
       "    <script src=&quot;https://unpkg.com/preact@10.0.1/dist/preact.umd.js&quot;></script>\n",
       "    <script src=&quot;https://unpkg.com/preact@10.0.1/hooks/dist/hooks.umd.js&quot;></script>\n",
       "    <script src=&quot;https://unpkg.com/htm@2.2.1/dist/htm.umd.js&quot;></script>\n",
       "    <script src=&quot;https://unpkg.com/chess.js@0.12.0/chess.js&quot;></script>\n",
       "    <script>\n",
       "      // Polyfill for Styled Components\n",
       "      window.React = {\n",
       "        ...preact,\n",
       "        createElement: preact.h,\n",
       "        PropTypes: { func: {} },\n",
       "      };\n",
       "    </script>\n",
       "    <script src=&quot;https://unpkg.com/styled-components@3.5.0-0/dist/styled-components.min.js&quot;></script>\n",
       "  </head>\n",
       "  <body>\n",
       "    <script>\n",
       "      \n",
       "window.kaggle = {\n",
       "  &quot;debug&quot;: true,\n",
       "  &quot;playing&quot;: true,\n",
       "  &quot;step&quot;: 0,\n",
       "  &quot;controls&quot;: true,\n",
       "  &quot;environment&quot;: {\n",
       "    &quot;id&quot;: &quot;9c7b6fcc-c9a6-11ef-8e53-eb68487264d2&quot;,\n",
       "    &quot;name&quot;: &quot;connectx&quot;,\n",
       "    &quot;title&quot;: &quot;ConnectX&quot;,\n",
       "    &quot;description&quot;: &quot;Classic Connect in a row but configurable.&quot;,\n",
       "    &quot;version&quot;: &quot;1.0.1&quot;,\n",
       "    &quot;configuration&quot;: {\n",
       "      &quot;episodeSteps&quot;: 1000,\n",
       "      &quot;actTimeout&quot;: 2,\n",
       "      &quot;runTimeout&quot;: 1200,\n",
       "      &quot;columns&quot;: 7,\n",
       "      &quot;rows&quot;: 6,\n",
       "      &quot;inarow&quot;: 4,\n",
       "      &quot;agentTimeout&quot;: 60,\n",
       "      &quot;timeout&quot;: 2\n",
       "    },\n",
       "    &quot;specification&quot;: {\n",
       "      &quot;action&quot;: {\n",
       "        &quot;description&quot;: &quot;Column to drop a checker onto the board.&quot;,\n",
       "        &quot;type&quot;: &quot;integer&quot;,\n",
       "        &quot;minimum&quot;: 0,\n",
       "        &quot;default&quot;: 0\n",
       "      },\n",
       "      &quot;agents&quot;: [\n",
       "        2\n",
       "      ],\n",
       "      &quot;configuration&quot;: {\n",
       "        &quot;episodeSteps&quot;: {\n",
       "          &quot;description&quot;: &quot;Maximum number of steps in the episode.&quot;,\n",
       "          &quot;type&quot;: &quot;integer&quot;,\n",
       "          &quot;minimum&quot;: 1,\n",
       "          &quot;default&quot;: 1000\n",
       "        },\n",
       "        &quot;actTimeout&quot;: {\n",
       "          &quot;description&quot;: &quot;Maximum runtime (seconds) to obtain an action from an agent.&quot;,\n",
       "          &quot;type&quot;: &quot;number&quot;,\n",
       "          &quot;minimum&quot;: 0,\n",
       "          &quot;default&quot;: 2\n",
       "        },\n",
       "        &quot;runTimeout&quot;: {\n",
       "          &quot;description&quot;: &quot;Maximum runtime (seconds) of an episode (not necessarily DONE).&quot;,\n",
       "          &quot;type&quot;: &quot;number&quot;,\n",
       "          &quot;minimum&quot;: 0,\n",
       "          &quot;default&quot;: 1200\n",
       "        },\n",
       "        &quot;columns&quot;: {\n",
       "          &quot;description&quot;: &quot;The number of columns on the board&quot;,\n",
       "          &quot;type&quot;: &quot;integer&quot;,\n",
       "          &quot;default&quot;: 7,\n",
       "          &quot;minimum&quot;: 1\n",
       "        },\n",
       "        &quot;rows&quot;: {\n",
       "          &quot;description&quot;: &quot;The number of rows on the board&quot;,\n",
       "          &quot;type&quot;: &quot;integer&quot;,\n",
       "          &quot;default&quot;: 6,\n",
       "          &quot;minimum&quot;: 1\n",
       "        },\n",
       "        &quot;inarow&quot;: {\n",
       "          &quot;description&quot;: &quot;The number of checkers in a row required to win.&quot;,\n",
       "          &quot;type&quot;: &quot;integer&quot;,\n",
       "          &quot;default&quot;: 4,\n",
       "          &quot;minimum&quot;: 1\n",
       "        },\n",
       "        &quot;agentTimeout&quot;: {\n",
       "          &quot;description&quot;: &quot;Obsolete field kept for backwards compatibility, please use observation.remainingOverageTime.&quot;,\n",
       "          &quot;type&quot;: &quot;number&quot;,\n",
       "          &quot;minimum&quot;: 0,\n",
       "          &quot;default&quot;: 60\n",
       "        },\n",
       "        &quot;timeout&quot;: {\n",
       "          &quot;description&quot;: &quot;Obsolete copy of actTimeout maintained for backwards compatibility. May be removed in the future.&quot;,\n",
       "          &quot;type&quot;: &quot;integer&quot;,\n",
       "          &quot;default&quot;: 2,\n",
       "          &quot;minimum&quot;: 0\n",
       "        }\n",
       "      },\n",
       "      &quot;info&quot;: {},\n",
       "      &quot;observation&quot;: {\n",
       "        &quot;remainingOverageTime&quot;: {\n",
       "          &quot;description&quot;: &quot;Total remaining banked time (seconds) that can be used in excess of per-step actTimeouts -- agent is disqualified with TIMEOUT status when this drops below 0.&quot;,\n",
       "          &quot;shared&quot;: false,\n",
       "          &quot;type&quot;: &quot;number&quot;,\n",
       "          &quot;minimum&quot;: 0,\n",
       "          &quot;default&quot;: 60\n",
       "        },\n",
       "        &quot;step&quot;: {\n",
       "          &quot;description&quot;: &quot;Current step within the episode.&quot;,\n",
       "          &quot;type&quot;: &quot;integer&quot;,\n",
       "          &quot;shared&quot;: true,\n",
       "          &quot;minimum&quot;: 0,\n",
       "          &quot;default&quot;: 0\n",
       "        },\n",
       "        &quot;board&quot;: {\n",
       "          &quot;description&quot;: &quot;Serialized grid (rows x columns). 0 = Empty, 1 = P1, 2 = P2&quot;,\n",
       "          &quot;type&quot;: &quot;array&quot;,\n",
       "          &quot;shared&quot;: true,\n",
       "          &quot;default&quot;: []\n",
       "        },\n",
       "        &quot;mark&quot;: {\n",
       "          &quot;defaults&quot;: [\n",
       "            1,\n",
       "            2\n",
       "          ],\n",
       "          &quot;description&quot;: &quot;Which checkers are the agents.&quot;,\n",
       "          &quot;enum&quot;: [\n",
       "            1,\n",
       "            2\n",
       "          ]\n",
       "        }\n",
       "      },\n",
       "      &quot;reward&quot;: {\n",
       "        &quot;description&quot;: &quot;-1 = Lost, 0 = Draw/Ongoing, 1 = Won&quot;,\n",
       "        &quot;enum&quot;: [\n",
       "          -1,\n",
       "          0,\n",
       "          1\n",
       "        ],\n",
       "        &quot;default&quot;: 0,\n",
       "        &quot;type&quot;: [\n",
       "          &quot;number&quot;,\n",
       "          &quot;null&quot;\n",
       "        ]\n",
       "      }\n",
       "    },\n",
       "    &quot;steps&quot;: [\n",
       "      [\n",
       "        {\n",
       "          &quot;action&quot;: 0,\n",
       "          &quot;reward&quot;: 0,\n",
       "          &quot;info&quot;: {},\n",
       "          &quot;observation&quot;: {\n",
       "            &quot;remainingOverageTime&quot;: 60,\n",
       "            &quot;step&quot;: 0,\n",
       "            &quot;board&quot;: [\n",
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       "            &quot;mark&quot;: 1\n",
       "          },\n",
       "          &quot;status&quot;: &quot;ACTIVE&quot;\n",
       "        },\n",
       "        {\n",
       "          &quot;action&quot;: 0,\n",
       "          &quot;reward&quot;: 0,\n",
       "          &quot;info&quot;: {},\n",
       "          &quot;observation&quot;: {\n",
       "            &quot;remainingOverageTime&quot;: 60,\n",
       "            &quot;mark&quot;: 2\n",
       "          },\n",
       "          &quot;status&quot;: &quot;INACTIVE&quot;\n",
       "        }\n",
       "      ],\n",
       "      [\n",
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       "          &quot;action&quot;: 0,\n",
       "          &quot;reward&quot;: 0,\n",
       "          &quot;info&quot;: {},\n",
       "          &quot;observation&quot;: {\n",
       "            &quot;remainingOverageTime&quot;: 60,\n",
       "            &quot;step&quot;: 1,\n",
       "            &quot;board&quot;: [\n",
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       "          &quot;info&quot;: {},\n",
       "          &quot;observation&quot;: {\n",
       "            &quot;remainingOverageTime&quot;: 60,\n",
       "            &quot;mark&quot;: 2\n",
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       "          &quot;status&quot;: &quot;ACTIVE&quot;\n",
       "        }\n",
       "      ],\n",
       "      [\n",
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       "          &quot;info&quot;: {},\n",
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       "            &quot;remainingOverageTime&quot;: 60,\n",
       "            &quot;step&quot;: 2,\n",
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       "          &quot;action&quot;: 3,\n",
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       "          &quot;info&quot;: {},\n",
       "          &quot;observation&quot;: {\n",
       "            &quot;remainingOverageTime&quot;: 60,\n",
       "            &quot;mark&quot;: 2\n",
       "          },\n",
       "          &quot;status&quot;: &quot;INACTIVE&quot;\n",
       "        }\n",
       "      ],\n",
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       "          &quot;observation&quot;: {\n",
       "            &quot;remainingOverageTime&quot;: 60,\n",
       "            &quot;step&quot;: 3,\n",
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       "          &quot;info&quot;: {},\n",
       "          &quot;observation&quot;: {\n",
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       "        }\n",
       "      ],\n",
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       "          &quot;info&quot;: {},\n",
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       "            &quot;remainingOverageTime&quot;: 60,\n",
       "            &quot;step&quot;: 4,\n",
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       "          &quot;info&quot;: {},\n",
       "          &quot;observation&quot;: {\n",
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       "        }\n",
       "      ],\n",
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       "            &quot;step&quot;: 5,\n",
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       "          &quot;info&quot;: {},\n",
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       "        }\n",
       "      ],\n",
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       "          &quot;info&quot;: {},\n",
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       "      ],\n",
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       "      {\n",
       "        &quot;duration&quot;: 1.1e-05,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      },\n",
       "      {}\n",
       "    ],\n",
       "    [\n",
       "      {},\n",
       "      {\n",
       "        &quot;duration&quot;: 1.7e-05,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      }\n",
       "    ],\n",
       "    [\n",
       "      {\n",
       "        &quot;duration&quot;: 9e-06,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      },\n",
       "      {}\n",
       "    ],\n",
       "    [\n",
       "      {},\n",
       "      {\n",
       "        &quot;duration&quot;: 9e-06,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      }\n",
       "    ],\n",
       "    [\n",
       "      {\n",
       "        &quot;duration&quot;: 2e-05,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      },\n",
       "      {}\n",
       "    ],\n",
       "    [\n",
       "      {},\n",
       "      {\n",
       "        &quot;duration&quot;: 9e-06,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      }\n",
       "    ],\n",
       "    [\n",
       "      {\n",
       "        &quot;duration&quot;: 9e-06,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      },\n",
       "      {}\n",
       "    ],\n",
       "    [\n",
       "      {},\n",
       "      {\n",
       "        &quot;duration&quot;: 1.1e-05,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      }\n",
       "    ],\n",
       "    [\n",
       "      {\n",
       "        &quot;duration&quot;: 1e-05,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      },\n",
       "      {}\n",
       "    ],\n",
       "    [\n",
       "      {},\n",
       "      {\n",
       "        &quot;duration&quot;: 7e-06,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      }\n",
       "    ],\n",
       "    [\n",
       "      {\n",
       "        &quot;duration&quot;: 1.1e-05,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      },\n",
       "      {}\n",
       "    ],\n",
       "    [\n",
       "      {},\n",
       "      {\n",
       "        &quot;duration&quot;: 7e-06,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      }\n",
       "    ],\n",
       "    [],\n",
       "    [\n",
       "      {\n",
       "        &quot;duration&quot;: 7e-06,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      },\n",
       "      {}\n",
       "    ],\n",
       "    [\n",
       "      {},\n",
       "      {\n",
       "        &quot;duration&quot;: 9e-06,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      }\n",
       "    ],\n",
       "    [\n",
       "      {\n",
       "        &quot;duration&quot;: 5e-06,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      },\n",
       "      {}\n",
       "    ],\n",
       "    [\n",
       "      {},\n",
       "      {\n",
       "        &quot;duration&quot;: 6e-06,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      }\n",
       "    ],\n",
       "    [\n",
       "      {\n",
       "        &quot;duration&quot;: 5e-06,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      },\n",
       "      {}\n",
       "    ],\n",
       "    [\n",
       "      {},\n",
       "      {\n",
       "        &quot;duration&quot;: 7e-06,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      }\n",
       "    ],\n",
       "    [\n",
       "      {\n",
       "        &quot;duration&quot;: 5e-06,\n",
       "        &quot;stdout&quot;: &quot;&quot;,\n",
       "        &quot;stderr&quot;: &quot;&quot;\n",
       "      },\n",
       "      {}\n",
       "    ]\n",
       "  ],\n",
       "  &quot;mode&quot;: &quot;ipython&quot;\n",
       "};\n",
       "\n",
       "\n",
       "window.kaggle.renderer = // Copyright 2020 Kaggle Inc\n",
       "//\n",
       "// Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);\n",
       "// you may not use this file except in compliance with the License.\n",
       "// You may obtain a copy of the License at\n",
       "//\n",
       "//      http://www.apache.org/licenses/LICENSE-2.0\n",
       "//\n",
       "// Unless required by applicable law or agreed to in writing, software\n",
       "// distributed under the License is distributed on an &quot;AS IS&quot; BASIS,\n",
       "// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n",
       "// See the License for the specific language governing permissions and\n",
       "// limitations under the License.\n",
       "\n",
       "function renderer({\n",
       "  act,\n",
       "  agents,\n",
       "  environment,\n",
       "  frame,\n",
       "  height = 400,\n",
       "  interactive,\n",
       "  isInteractive,\n",
       "  parent,\n",
       "  step,\n",
       "  update,\n",
       "  width = 400,\n",
       "}) {\n",
       "  // Configuration.\n",
       "  const { rows, columns, inarow } = environment.configuration;\n",
       "\n",
       "  // Common Dimensions.\n",
       "  const unit = 8;\n",
       "  const minCanvasSize = Math.min(height, width);\n",
       "  const minOffset = minCanvasSize > 400 ? 30 : unit / 2;\n",
       "  const cellSize = Math.min(\n",
       "    (width - minOffset * 2) / columns,\n",
       "    (height - minOffset * 2) / rows\n",
       "  );\n",
       "  const cellInset = 0.8;\n",
       "  const pieceScale = cellSize / 100;\n",
       "  const xOffset = Math.max(0, (width - cellSize * columns) / 2);\n",
       "  const yOffset = Math.max(0, (height - cellSize * rows) / 2);\n",
       "\n",
       "  // Canvas Setup.\n",
       "  let canvas = parent.querySelector(&quot;canvas&quot;);\n",
       "  if (!canvas) {\n",
       "    canvas = document.createElement(&quot;canvas&quot;);\n",
       "    parent.appendChild(canvas);\n",
       "\n",
       "    if (interactive) {\n",
       "      canvas.addEventListener(&quot;click&quot;, evt => {\n",
       "        if (!isInteractive()) return;\n",
       "        const rect = evt.target.getBoundingClientRect();\n",
       "        const col = Math.floor((evt.clientX - rect.left - xOffset) / cellSize);\n",
       "        if (col >= 0 && col < columns) act(col);\n",
       "      });\n",
       "    }\n",
       "  }\n",
       "  canvas.style.cursor = isInteractive() ? &quot;pointer&quot; : &quot;default&quot;;\n",
       "\n",
       "  // Character Paths (based on 100x100 tiles).\n",
       "  const kPath = new Path2D(\n",
       "    `M78.3,96.5c-0.1,0.4-0.5,0.6-1.1,0.6H64.9c-0.7,0-1.4-0.3-1.9-1l-20.3-26L37,75.5v20.1 c0,0.9-0.5,1.4-1.4,1.4H26c-0.9,0-1.4-0.5-1.4-1.4V3.9c0-0.9,0.5-1.4,1.4-1.4h9.5C36.5,2.5,37,3,37,3.9v56.5l24.3-24.7 c0.6-0.6,1.3-1,1.9-1H76c0.6,0,0.9,0.2,1.1,0.7c0.2,0.6,0.1,1-0.1,1.2l-25.7,25L78,95.1C78.4,95.5,78.5,95.9,78.3,96.5z`\n",
       "  );\n",
       "  const goose1Path = new Path2D(\n",
       "    `M8.8,92.7c-4-18.5,4.7-37.2,20.7-46.2c0,0,2.7-1.4,3.4-1.9c2.2-1.6,3-2.1,3-5c0-5-2.1-7.2-2.1-7.2 c-3.9-3.3-6.3-8.2-6.3-13.7c0-10,8.1-18.1,18.1-18.1s18.1,8.1,18.1,18.1c0,6-1.5,32.7-2.3,38.8l-0.1,1`\n",
       "  );\n",
       "  const goose2Path = new Path2D(\n",
       "    `M27.4,19L8.2,27.6c0,0-7.3,2.9,2.6,5c6.1,1.3,24,5.9,24,5.9l1,0.3`\n",
       "  );\n",
       "  const goose3Path = new Path2D(\n",
       "    `M63.7,99.6C52.3,99.6,43,90.3,43,78.9s9.3-20.7,20.7-20.7c10.6,0,34.4,0.1,35.8,9`\n",
       "  );\n",
       "\n",
       "  // Canvas setup and reset.\n",
       "  let c = canvas.getContext(&quot;2d&quot;);\n",
       "  canvas.width = width;\n",
       "  canvas.height = height;\n",
       "  c.fillStyle = &quot;#000B2A&quot;;\n",
       "  c.fillRect(0, 0, canvas.width, canvas.height);\n",
       "\n",
       "  const getRowCol = cell => [Math.floor(cell / columns), cell % columns];\n",
       "\n",
       "  const getColor = (mark, opacity = 1) => {\n",
       "    if (mark === 1) return `rgba(0,255,255,${opacity})`;\n",
       "    if (mark === 2) return `rgba(255,255,255,${opacity})`;\n",
       "    return &quot;#fff&quot;;\n",
       "  };\n",
       "\n",
       "  const drawCellCircle = (cell, xFrame = 1, yFrame = 1, radiusOffset = 0) => {\n",
       "    const [row, col] = getRowCol(cell);\n",
       "    c.arc(\n",
       "      xOffset + xFrame * (col * cellSize + cellSize / 2),\n",
       "      yOffset + yFrame * (row * cellSize + cellSize / 2),\n",
       "      (cellInset * cellSize) / 2 - radiusOffset,\n",
       "      2 * Math.PI,\n",
       "      false\n",
       "    );\n",
       "  };\n",
       "\n",
       "  // Render the pieces.\n",
       "  const board = environment.steps[step][0].observation.board;\n",
       "\n",
       "  const drawPiece = mark => {\n",
       "    // Base Styles.\n",
       "    const opacity = minCanvasSize < 300 ? 0.6 - minCanvasSize / 1000 : 0.1;\n",
       "    c.fillStyle = getColor(mark, opacity);\n",
       "    c.strokeStyle = getColor(mark);\n",
       "    c.shadowColor = getColor(mark);\n",
       "    c.shadowBlur = 8 / cellInset;\n",
       "    c.lineWidth = 1 / cellInset;\n",
       "\n",
       "    // Outer circle.\n",
       "    c.save();\n",
       "    c.beginPath();\n",
       "    c.arc(50, 50, 50, 2 * Math.PI, false);\n",
       "    c.closePath();\n",
       "    c.lineWidth *= 4;\n",
       "    c.stroke();\n",
       "    c.fill();\n",
       "    c.restore();\n",
       "\n",
       "    // Inner circle.\n",
       "    c.beginPath();\n",
       "    c.arc(50, 50, 40, 2 * Math.PI, false);\n",
       "    c.closePath();\n",
       "    c.stroke();\n",
       "\n",
       "    // Kaggle &quot;K&quot;.\n",
       "    if (mark === 1) {\n",
       "      const scale = 0.54;\n",
       "      c.save();\n",
       "      c.translate(23, 23);\n",
       "      c.scale(scale, scale);\n",
       "      c.lineWidth /= scale;\n",
       "      c.shadowBlur /= scale;\n",
       "      c.stroke(kPath);\n",
       "      c.restore();\n",
       "    }\n",
       "\n",
       "    // Kaggle &quot;Goose&quot;.\n",
       "    if (mark === 2) {\n",
       "      const scale = 0.6;\n",
       "      c.save();\n",
       "      c.translate(24, 28);\n",
       "      c.scale(scale, scale);\n",
       "      c.lineWidth /= scale;\n",
       "      c.shadowBlur /= scale;\n",
       "      c.stroke(goose1Path);\n",
       "      c.stroke(goose2Path);\n",
       "      c.stroke(goose3Path);\n",
       "      c.beginPath();\n",
       "      c.arc(38.5, 18.6, 2.7, 0, Math.PI * 2, false);\n",
       "      c.closePath();\n",
       "      c.fill();\n",
       "      c.restore();\n",
       "    }\n",
       "  };\n",
       "\n",
       "  for (let i = 0; i < board.length; i++) {\n",
       "    const [row, col] = getRowCol(i);\n",
       "    if (board[i] === 0) continue;\n",
       "    // Easing In.\n",
       "    let yFrame = Math.min(\n",
       "      (columns * Math.pow(frame, 3)) / Math.floor(i / columns),\n",
       "      1\n",
       "    );\n",
       "\n",
       "    if (\n",
       "      step > 1 &&\n",
       "      environment.steps[step - 1][0].observation.board[i] === board[i]\n",
       "    ) {\n",
       "      yFrame = 1;\n",
       "    }\n",
       "\n",
       "    c.save();\n",
       "    c.translate(\n",
       "      xOffset + cellSize * col + (cellSize - cellSize * cellInset) / 2,\n",
       "      yOffset +\n",
       "        yFrame * (cellSize * row) +\n",
       "        (cellSize - cellSize * cellInset) / 2\n",
       "    );\n",
       "    c.scale(pieceScale * cellInset, pieceScale * cellInset);\n",
       "    drawPiece(board[i]);\n",
       "    c.restore();\n",
       "  }\n",
       "\n",
       "  // Background Gradient.\n",
       "  const bgRadius = (Math.min(rows, columns) * cellSize) / 2;\n",
       "  const bgStyle = c.createRadialGradient(\n",
       "    xOffset + (cellSize * columns) / 2,\n",
       "    yOffset + (cellSize * rows) / 2,\n",
       "    0,\n",
       "    xOffset + (cellSize * columns) / 2,\n",
       "    yOffset + (cellSize * rows) / 2,\n",
       "    bgRadius\n",
       "  );\n",
       "  bgStyle.addColorStop(0, &quot;#000B49&quot;);\n",
       "  bgStyle.addColorStop(1, &quot;#000B2A&quot;);\n",
       "\n",
       "  // Render the board overlay.\n",
       "  c.beginPath();\n",
       "  c.rect(0, 0, canvas.width, canvas.height);\n",
       "  c.closePath();\n",
       "  c.shadowBlur = 0;\n",
       "  for (let i = 0; i < board.length; i++) {\n",
       "    drawCellCircle(i);\n",
       "    c.closePath();\n",
       "  }\n",
       "  c.fillStyle = bgStyle;\n",
       "  c.fill(&quot;evenodd&quot;);\n",
       "\n",
       "  // Render the board overlay cell outlines.\n",
       "  for (let i = 0; i < board.length; i++) {\n",
       "    c.beginPath();\n",
       "    drawCellCircle(i);\n",
       "    c.strokeStyle = &quot;#0361B2&quot;;\n",
       "    c.lineWidth = 1;\n",
       "    c.stroke();\n",
       "    c.closePath();\n",
       "  }\n",
       "\n",
       "  const drawLine = (fromCell, toCell) => {\n",
       "    if (frame < 0.5) return;\n",
       "    const lineFrame = (frame - 0.5) / 0.5;\n",
       "    const x1 = xOffset + (fromCell % columns) * cellSize + cellSize / 2;\n",
       "    const x2 =\n",
       "      x1 +\n",
       "      lineFrame *\n",
       "        (xOffset + ((toCell % columns) * cellSize + cellSize / 2) - x1);\n",
       "    const y1 =\n",
       "      yOffset + Math.floor(fromCell / columns) * cellSize + cellSize / 2;\n",
       "    const y2 =\n",
       "      y1 +\n",
       "      lineFrame *\n",
       "        (yOffset + Math.floor(toCell / columns) * cellSize + cellSize / 2 - y1);\n",
       "    c.beginPath();\n",
       "    c.lineCap = &quot;round&quot;;\n",
       "    c.lineWidth = 4;\n",
       "    c.strokeStyle = getColor(board[fromCell]);\n",
       "    c.shadowBlur = 8;\n",
       "    c.shadowColor = getColor(board[fromCell]);\n",
       "    c.moveTo(x1, y1);\n",
       "    c.lineTo(x2, y2);\n",
       "    c.stroke();\n",
       "  };\n",
       "\n",
       "  // Generate a graph of the board.\n",
       "  const getCell = (cell, rowOffset, columnOffset) => {\n",
       "    const row = Math.floor(cell / columns) + rowOffset;\n",
       "    const col = (cell % columns) + columnOffset;\n",
       "    if (row < 0 || row >= rows || col < 0 || col >= columns) return -1;\n",
       "    return col + row * columns;\n",
       "  };\n",
       "  const makeNode = cell => {\n",
       "    const node = { cell, directions: [], value: board[cell] };\n",
       "    for (let r = -1; r <= 1; r++) {\n",
       "      for (let c = -1; c <= 1; c++) {\n",
       "        if (r === 0 && c === 0) continue;\n",
       "        node.directions.push(getCell(cell, r, c));\n",
       "      }\n",
       "    }\n",
       "    return node;\n",
       "  };\n",
       "  const graph = board.map((_, i) => makeNode(i));\n",
       "\n",
       "  // Check for any wins!\n",
       "  const getSequence = (node, direction) => {\n",
       "    const sequence = [node.cell];\n",
       "    while (sequence.length < inarow) {\n",
       "      const next = graph[node.directions[direction]];\n",
       "      if (!next || node.value !== next.value || next.value === 0) return;\n",
       "      node = next;\n",
       "      sequence.push(node.cell);\n",
       "    }\n",
       "    return sequence;\n",
       "  };\n",
       "\n",
       "  // Check all nodes.\n",
       "  for (let i = 0; i < board.length; i++) {\n",
       "    // Check all directions (not the most efficient).\n",
       "    for (let d = 0; d < 8; d++) {\n",
       "      const seq = getSequence(graph[i], d);\n",
       "      if (seq) {\n",
       "        drawLine(seq[0], seq[inarow - 1]);\n",
       "        i = board.length;\n",
       "        break;\n",
       "      }\n",
       "    }\n",
       "  }\n",
       "\n",
       "  // Upgrade the legend.\n",
       "  if (agents.length && (!agents[0].color || !agents[0].image)) {\n",
       "    const getPieceImage = mark => {\n",
       "      const pieceCanvas = document.createElement(&quot;canvas&quot;);\n",
       "      parent.appendChild(pieceCanvas);\n",
       "      pieceCanvas.style.marginLeft = &quot;10000px&quot;;\n",
       "      pieceCanvas.width = 100;\n",
       "      pieceCanvas.height = 100;\n",
       "      c = pieceCanvas.getContext(&quot;2d&quot;);\n",
       "      c.translate(10, 10);\n",
       "      c.scale(0.8, 0.8);\n",
       "      drawPiece(mark);\n",
       "      const dataUrl = pieceCanvas.toDataURL();\n",
       "      parent.removeChild(pieceCanvas);\n",
       "      return dataUrl;\n",
       "    };\n",
       "\n",
       "    agents.forEach(agent => {\n",
       "      agent.color = getColor(agent.index + 1);\n",
       "      agent.image = getPieceImage(agent.index + 1);\n",
       "    });\n",
       "    update({ agents });\n",
       "  }\n",
       "};\n",
       "\n",
       "\n",
       "    \n",
       "    </script>\n",
       "    <script>\n",
       "      const h = htm.bind(preact.h);\n",
       "      const { useContext, useEffect, useRef, useState } = preactHooks;\n",
       "      const styled = window.styled.default;\n",
       "\n",
       "      const Context = preact.createContext({});\n",
       "\n",
       "      const Loading = styled.div`\n",
       "        animation: rotate360 1.1s infinite linear;\n",
       "        border: 8px solid rgba(255, 255, 255, 0.2);\n",
       "        border-left-color: #0cb1ed;\n",
       "        border-radius: 50%;\n",
       "        height: 40px;\n",
       "        position: relative;\n",
       "        transform: translateZ(0);\n",
       "        width: 40px;\n",
       "\n",
       "        @keyframes rotate360 {\n",
       "          0% {\n",
       "            transform: rotate(0deg);\n",
       "          }\n",
       "          100% {\n",
       "            transform: rotate(360deg);\n",
       "          }\n",
       "        }\n",
       "      `;\n",
       "\n",
       "      const Logo = styled(\n",
       "        (props) => h`\n",
       "        <a href=&quot;https://kaggle.com&quot; target=&quot;_blank&quot; className=${props.className}>\n",
       "          <svg width=&quot;62px&quot; height=&quot;20px&quot; viewBox=&quot;0 0 62 24&quot; version=&quot;1.1&quot; xmlns=&quot;http://www.w3.org/2000/svg&quot;>\n",
       "            <g fill=&quot;#1EBEFF&quot; fill-rule=&quot;nonzero&quot;>\n",
       "              <path d=&quot;M10.2,17.8c0,0.1-0.1,0.1-0.2,0.1H7.7c-0.1,0-0.3-0.1-0.4-0.2l-3.8-4.9l-1.1,1v3.8 c0,0.2-0.1,0.3-0.3,0.3H0.3c-0.2,0-0.3-0.1-0.3-0.3V0.3C0.1,0.1,0.2,0,0.3,0h1.8c0.2,0,0.3,0.1,0.3,0.3V11L7,6.3 c0.1-0.1,0.2-0.2,0.4-0.2h2.4c0.1,0,0.2,0,0.2,0.1c0,0.1,0,0.2,0,0.2l-4.9,4.7l5.1,6.3C10.2,17.6,10.2,17.7,10.2,17.8z&quot;/>\n",
       "              <path d=&quot;M19.6,17.9h-1.8c-0.2,0-0.3-0.1-0.3-0.3v-0.4c-0.8,0.6-1.8,0.9-3,0.9c-1.1,0-2-0.3-2.8-1 c-0.8-0.7-1.2-1.6-1.2-2.7c0-1.7,1.1-2.9,3.2-3.5c0.8-0.2,2.1-0.5,3.8-0.6c0.1-0.6-0.1-1.2-0.5-1.7c-0.4-0.5-1-0.7-1.7-0.7 c-1,0-2,0.4-3,1C12.2,9.1,12.1,9.1,12,9l-0.9-1.3C11,7.5,11,7.4,11.1,7.3c1.3-0.9,2.7-1.4,4.2-1.4c1.1,0,2.1,0.3,2.8,0.8 c1.1,0.8,1.7,2,1.7,3.7v7.3C19.9,17.8,19.8,17.9,19.6,17.9z M17.5,12.4c-1.7,0.2-2.9,0.4-3.5,0.7c-0.9,0.4-1.2,0.9-1.1,1.6 c0.1,0.4,0.2,0.7,0.6,0.9c0.3,0.2,0.7,0.4,1.1,0.4c1.2,0.1,2.2-0.2,2.9-1V12.4z&quot;/>\n",
       "              <path d=&quot;M30.6,22.5c-0.9,1-2.3,1.5-4,1.5c-1,0-2-0.3-2.9-0.8c-0.2-0.1-0.4-0.3-0.7-0.5 c-0.3-0.2-0.6-0.5-0.9-0.7c-0.1-0.1-0.1-0.2,0-0.4l1.2-1.2c0.1-0.1,0.1-0.1,0.2-0.1c0.1,0,0.1,0,0.2,0.1c1,1,1.9,1.5,2.8,1.5 c2.1,0,3.2-1.1,3.2-3.3v-1.4c-0.8,0.7-1.9,1-3.3,1c-1.7,0-3-0.6-4-1.9c-0.8-1.1-1.3-2.5-1.3-4.2c0-1.6,0.4-3,1.2-4.1 c0.9-1.3,2.3-2,4-2c1.3,0,2.4,0.3,3.3,1V6.4c0-0.2,0.1-0.3,0.3-0.3h1.8c0.2,0,0.3,0.1,0.3,0.3v11.7C32,20,31.5,21.5,30.6,22.5z M29.7,9.9c-0.4-1.1-1.4-1.7-3-1.7c-2,0-3.1,1.3-3.1,3.8c0,1.4,0.3,2.4,1,3.1c0.5,0.5,1.2,0.8,2,0.8c1.6,0,2.7-0.6,3.1-1.7V9.9z&quot;/>\n",
       "              <path d=&quot;M42.9,22.5c-0.9,1-2.3,1.5-4,1.5c-1,0-2-0.3-2.9-0.8c-0.2-0.1-0.4-0.3-0.7-0.5 c-0.3-0.2-0.6-0.5-0.9-0.7c-0.1-0.1-0.1-0.2,0-0.4l1.2-1.2c0.1-0.1,0.1-0.1,0.2-0.1c0.1,0,0.1,0,0.2,0.1c1,1,1.9,1.5,2.8,1.5 c2.1,0,3.2-1.1,3.2-3.3v-1.4c-0.8,0.7-1.9,1-3.3,1c-1.7,0-3-0.6-4-1.9c-0.8-1.1-1.3-2.5-1.3-4.2c0-1.6,0.4-3,1.2-4.1 c0.9-1.3,2.3-2,4-2c1.3,0,2.4,0.3,3.3,1V6.4c0-0.2,0.1-0.3,0.3-0.3H44c0.2,0,0.3,0.1,0.3,0.3v11.7C44.3,20,43.8,21.5,42.9,22.5z M42,9.9c-0.4-1.1-1.4-1.7-3-1.7c-2,0-3.1,1.3-3.1,3.8c0,1.4,0.3,2.4,1,3.1c0.5,0.5,1.2,0.8,2,0.8c1.6,0,2.7-0.6,3.1-1.7L42,9.9 L42,9.9z&quot;/>\n",
       "              <path d=&quot;M48.3,17.9h-1.8c-0.2,0-0.3-0.1-0.3-0.3V0.3c0-0.2,0.1-0.3,0.3-0.3h1.8c0.2,0,0.3,0.1,0.3,0.3 v17.3C48.5,17.8,48.5,17.9,48.3,17.9z&quot;/>\n",
       "              <path d=&quot;M61.4,12.6c0,0.2-0.1,0.3-0.3,0.3h-8.5c0.1,0.9,0.5,1.6,1.1,2.2c0.7,0.6,1.6,0.9,2.7,0.9 c1,0,1.8-0.3,2.6-0.8c0.2-0.1,0.3-0.1,0.4,0l1.2,1.3c0.1,0.1,0.1,0.3,0,0.4c-1.3,0.9-2.7,1.4-4.4,1.4c-1.8,0-3.3-0.6-4.4-1.8 c-1.1-1.2-1.7-2.7-1.7-4.5c0-1.7,0.6-3.2,1.7-4.4c1-1.1,2.4-1.6,4.1-1.6c1.6,0,2.9,0.6,4,1.7c1.1,1.2,1.6,2.6,1.5,4.4L61.4,12.6 z M58,8.7c-0.6-0.5-1.3-0.8-2.1-0.8c-0.8,0-1.5,0.3-2.1,0.8c-0.6,0.5-1,1.2-1.1,2H59C59,9.9,58.6,9.3,58,8.7z&quot;/>\n",
       "            </g>\n",
       "          </svg>\n",
       "        </a>\n",
       "      `\n",
       "      )`\n",
       "        display: inline-flex;\n",
       "      `;\n",
       "\n",
       "      const Header = styled((props) => {\n",
       "        const { environment } = useContext(Context);\n",
       "\n",
       "        return h`<div className=${props.className} >\n",
       "          <${Logo} />\n",
       "          <span><b>Left / Right Arrow:</b> Increase / Decrease Step</span><span><b>0-9 Row Keys:</b> Playback Speed</span><span><b>Space:</b> Pause / Play</span>\n",
       "          ${environment.title}\n",
       "        </div>`;\n",
       "      })`\n",
       "        align-items: center;\n",
       "        border-bottom: 4px solid #212121;\n",
       "        box-sizing: border-box;\n",
       "        color: #fff;\n",
       "        display: flex;\n",
       "        flex: 0 0 36px;\n",
       "        font-size: 14px;\n",
       "        justify-content: space-between;\n",
       "        padding: 0 8px;\n",
       "        width: 100%;\n",
       "      `;\n",
       "\n",
       "      const Renderer = styled((props) => {\n",
       "        const context = useContext(Context);\n",
       "        const { animate, debug, playing, renderer, speed } = context;\n",
       "        const ref = preact.createRef();\n",
       "\n",
       "        useEffect(async () => {\n",
       "          if (!ref.current) return;\n",
       "\n",
       "          const renderFrame = async (start, step, lastFrame) => {\n",
       "            if (step !== context.step) return;\n",
       "            if (lastFrame === 1) {\n",
       "              if (!animate) return;\n",
       "              start = Date.now();\n",
       "            }\n",
       "            const frame =\n",
       "              playing || animate\n",
       "                ? Math.min((Date.now() - start) / speed, 1)\n",
       "                : 1;\n",
       "            try {\n",
       "              if (debug) console.time(&quot;render&quot;);\n",
       "              await renderer({\n",
       "                ...context,\n",
       "                frame,\n",
       "                height: ref.current.clientHeight,\n",
       "                hooks: preactHooks,\n",
       "                parent: ref.current,\n",
       "                preact,\n",
       "                styled,\n",
       "                width: ref.current.clientWidth,\n",
       "              });\n",
       "            } catch (error) {\n",
       "              if (debug) console.error(error);\n",
       "              console.log({ ...context, frame, error });\n",
       "            } finally {\n",
       "              if (debug) console.timeEnd(&quot;render&quot;);\n",
       "            }\n",
       "            window.requestAnimationFrame(() => renderFrame(start, step, frame));\n",
       "          };\n",
       "\n",
       "          await renderFrame(Date.now(), context.step);\n",
       "        }, [ref.current, context.step, context.renderer]);\n",
       "\n",
       "        return h`<div className=${props.className} ref=${ref} />`;\n",
       "      })`\n",
       "        align-items: center;\n",
       "        box-sizing: border-box;\n",
       "        display: flex;\n",
       "        height: 100%;\n",
       "        left: 0;\n",
       "        justify-content: center;\n",
       "        position: absolute;\n",
       "        top: 0;\n",
       "        width: 100%;\n",
       "      `;\n",
       "\n",
       "      const Processing = styled((props) => {\n",
       "        const { processing } = useContext(Context);\n",
       "        const text = processing === true ? &quot;Processing...&quot; : processing;\n",
       "        return h`<div className=${props.className}>${text}</div>`;\n",
       "      })`\n",
       "        bottom: 0;\n",
       "        color: #fff;\n",
       "        font-size: 12px;\n",
       "        left: 0;\n",
       "        line-height: 24px;\n",
       "        position: absolute;\n",
       "        text-align: center;\n",
       "        width: 100%;\n",
       "      `;\n",
       "\n",
       "      const Viewer = styled((props) => {\n",
       "        const { processing } = useContext(Context);\n",
       "        return h`<div className=${props.className}>\n",
       "          <${Renderer} />\n",
       "          ${processing && h`<${Processing} />`}\n",
       "        </div>`;\n",
       "      })`\n",
       "        background-color: #000b2a;\n",
       "        background-image: radial-gradient(\n",
       "          circle closest-side,\n",
       "          #000b49,\n",
       "          #000b2a\n",
       "        );\n",
       "        display: flex;\n",
       "        flex: 1;\n",
       "        overflow: hidden;\n",
       "        position: relative;\n",
       "        width: 100%;\n",
       "      `;\n",
       "\n",
       "      // Partitions the elements of arr into subarrays of max length num.\n",
       "      const groupIntoSets = (arr, num) => {\n",
       "        const sets = [];\n",
       "        arr.forEach(a => {\n",
       "          if (sets.length === 0 || sets[sets.length - 1].length === num) {\n",
       "            sets.push([]);\n",
       "          }\n",
       "          sets[sets.length - 1].push(a);\n",
       "        });\n",
       "        return sets;\n",
       "      }\n",
       "\n",
       "      // Expects `width` input prop to set proper max-width for agent name span.\n",
       "      const Legend = styled((props) => {\n",
       "        const { agents, legend } = useContext(Context);\n",
       "\n",
       "        const agentPairs = groupIntoSets(agents.sort((a, b) => a.index - b.index), 2);\n",
       "\n",
       "        return h`<div className=${props.className}>\n",
       "          ${agentPairs.map(agentList =>\n",
       "            h`<ul>\n",
       "                ${agentList.map(a =>\n",
       "                  h`<li key=${a.id} title=&quot;id: ${a.id}&quot; style=&quot;color:${a.color || &quot;#FFF&quot;}&quot;>\n",
       "                      ${a.image && h`<img src=${a.image} />`}\n",
       "                      <span>${a.name}</span>\n",
       "                    </li>`\n",
       "                )}\n",
       "              </ul>`)}\n",
       "        </div>`;\n",
       "      })`\n",
       "        background-color: #000b2a;\n",
       "        font-family: sans-serif;\n",
       "        font-size: 14px;\n",
       "        height: 48px;\n",
       "        width: 100%;\n",
       "\n",
       "        ul {\n",
       "          align-items: center;\n",
       "          display: flex;\n",
       "          flex-direction: row;\n",
       "          justify-content: center;\n",
       "        }\n",
       "\n",
       "        li {\n",
       "          align-items: center;\n",
       "          display: inline-flex;\n",
       "          transition: color 1s;\n",
       "        }\n",
       "\n",
       "        span {\n",
       "          max-width: ${p => (p.width || 400) * 0.5 - 36}px;\n",
       "          overflow: hidden;\n",
       "          text-overflow: ellipsis;\n",
       "          white-space: nowrap;\n",
       "        }\n",
       "\n",
       "        img {\n",
       "          height: 24px;\n",
       "          margin-left: 4px;\n",
       "          margin-right: 4px;\n",
       "          width: 24px;\n",
       "        }\n",
       "      `;\n",
       "\n",
       "      const StepInput = styled.input.attrs({\n",
       "        type: &quot;range&quot;,\n",
       "      })`\n",
       "        appearance: none;\n",
       "        background: rgba(255, 255, 255, 0.15);\n",
       "        border-radius: 2px;\n",
       "        display: block;\n",
       "        flex: 1;\n",
       "        height: 4px;\n",
       "        opacity: 0.8;\n",
       "        outline: none;\n",
       "        transition: opacity 0.2s;\n",
       "        width: 100%;\n",
       "\n",
       "        &:hover {\n",
       "          opacity: 1;\n",
       "        }\n",
       "\n",
       "        &::-webkit-slider-thumb {\n",
       "          appearance: none;\n",
       "          background: #1ebeff;\n",
       "          border-radius: 100%;\n",
       "          cursor: pointer;\n",
       "          height: 12px;\n",
       "          margin: 0;\n",
       "          position: relative;\n",
       "          width: 12px;\n",
       "\n",
       "          &::after {\n",
       "            content: &quot;&quot;;\n",
       "            position: absolute;\n",
       "            top: 0px;\n",
       "            left: 0px;\n",
       "            width: 200px;\n",
       "            height: 8px;\n",
       "            background: green;\n",
       "          }\n",
       "        }\n",
       "      `;\n",
       "\n",
       "      const PlayButton = styled.button`\n",
       "        align-items: center;\n",
       "        background: none;\n",
       "        border: none;\n",
       "        color: white;\n",
       "        cursor: pointer;\n",
       "        display: flex;\n",
       "        flex: 0 0 56px;\n",
       "        font-size: 20px;\n",
       "        height: 40px;\n",
       "        justify-content: center;\n",
       "        opacity: 0.8;\n",
       "        outline: none;\n",
       "        transition: opacity 0.2s;\n",
       "\n",
       "        &:hover {\n",
       "          opacity: 1;\n",
       "        }\n",
       "      `;\n",
       "\n",
       "      const StepCount = styled.span`\n",
       "        align-items: center;\n",
       "        color: white;\n",
       "        display: flex;\n",
       "        font-size: 14px;\n",
       "        justify-content: center;\n",
       "        opacity: 0.8;\n",
       "        padding: 0 16px;\n",
       "        pointer-events: none;\n",
       "      `;\n",
       "\n",
       "      const Controls = styled((props) => {\n",
       "        const { environment, pause, play, playing, setStep, step } = useContext(\n",
       "          Context\n",
       "        );\n",
       "        const value = step + 1;\n",
       "        const onClick = () => (playing ? pause() : play());\n",
       "        const onInput = (e) => {\n",
       "          pause();\n",
       "          setStep(parseInt(e.target.value) - 1);\n",
       "        };\n",
       "\n",
       "        return h`\n",
       "          <div className=${props.className}>\n",
       "            <${PlayButton} onClick=${onClick}><svg xmlns=&quot;http://www.w3.org/2000/svg&quot; width=&quot;24px&quot; height=&quot;24px&quot; viewBox=&quot;0 0 24 24&quot; fill=&quot;#FFFFFF&quot;>${\n",
       "          playing\n",
       "            ? h`<path d=&quot;M6 19h4V5H6v14zm8-14v14h4V5h-4z&quot;/><path d=&quot;M0 0h24v24H0z&quot; fill=&quot;none&quot;/>`\n",
       "            : h`<path d=&quot;M8 5v14l11-7z&quot;/><path d=&quot;M0 0h24v24H0z&quot; fill=&quot;none&quot;/>`\n",
       "        }</svg><//>\n",
       "            <${StepInput} min=&quot;1&quot; max=${\n",
       "          environment.steps.length\n",
       "        } value=&quot;${value}&quot; onInput=${onInput} />\n",
       "            <${StepCount}>${value} / ${environment.steps.length}<//>\n",
       "          </div>\n",
       "        `;\n",
       "      })`\n",
       "        align-items: center;\n",
       "        border-top: 4px solid #212121;\n",
       "        display: flex;\n",
       "        flex: 0 0 44px;\n",
       "        width: 100%;\n",
       "      `;\n",
       "\n",
       "      const Info = styled((props) => {\n",
       "        const {\n",
       "          environment,\n",
       "          playing,\n",
       "          step,\n",
       "          speed,\n",
       "          animate,\n",
       "          header,\n",
       "          controls,\n",
       "          settings,\n",
       "        } = useContext(Context);\n",
       "\n",
       "        return h`\n",
       "          <div className=${props.className}>\n",
       "            info:\n",
       "            step(${step}),\n",
       "            playing(${playing ? &quot;T&quot; : &quot;F&quot;}),\n",
       "            speed(${speed}),\n",
       "            animate(${animate ? &quot;T&quot; : &quot;F&quot;})\n",
       "          </div>`;\n",
       "      })`\n",
       "        color: #888;\n",
       "        font-family: monospace;\n",
       "        font-size: 12px;\n",
       "      `;\n",
       "\n",
       "      const Settings = styled((props) => {\n",
       "        const { environment, pause, play, playing, setStep, step } = useContext(\n",
       "          Context\n",
       "        );\n",
       "\n",
       "        return h`\n",
       "          <div className=${props.className}>\n",
       "            <${Info} />\n",
       "          </div>\n",
       "        `;\n",
       "      })`\n",
       "        background: #fff;\n",
       "        border-top: 4px solid #212121;\n",
       "        box-sizing: border-box;\n",
       "        padding: 20px;\n",
       "        width: 100%;\n",
       "\n",
       "        h1 {\n",
       "          font-size: 20px;\n",
       "        }\n",
       "      `;\n",
       "\n",
       "      const Player = styled((props) => {\n",
       "        const context = useContext(Context);\n",
       "        const { agents, controls, header, legend, loading, settings, width } = context;\n",
       "        return h`\n",
       "          <div className=${props.className}>\n",
       "            ${loading && h`<${Loading} />`}\n",
       "            ${!loading && header && h`<${Header} />`}\n",
       "            ${!loading && h`<${Viewer} />`}\n",
       "            ${!loading && legend && h`<${Legend} width=${width}/>`}\n",
       "            ${!loading && controls && h`<${Controls} />`}\n",
       "            ${!loading && settings && h`<${Settings} />`}\n",
       "          </div>`;\n",
       "      })`\n",
       "        align-items: center;\n",
       "        background: #212121;\n",
       "        border: 4px solid #212121;\n",
       "        box-sizing: border-box;\n",
       "        display: flex;\n",
       "        flex-direction: column;\n",
       "        height: 100%;\n",
       "        justify-content: center;\n",
       "        position: relative;\n",
       "        width: 100%;\n",
       "      `;\n",
       "\n",
       "      const App = () => {\n",
       "        const renderCountRef = useRef(0);\n",
       "        const [_, setRenderCount] = useState(0);\n",
       "\n",
       "        // These are bindings to the 0-9 keys and are milliseconds of timeout per step\n",
       "        const speeds = [\n",
       "          0,\n",
       "          3000,\n",
       "          1000,\n",
       "          500,\n",
       "          333, // Default\n",
       "          200,\n",
       "          100,\n",
       "          50,\n",
       "          25,\n",
       "          10,\n",
       "        ];\n",
       "\n",
       "        const contextRef = useRef({\n",
       "          animate: false,\n",
       "          agents: [],\n",
       "          controls: false,\n",
       "          debug: false,\n",
       "          environment: { steps: [], info: {} },\n",
       "          header: window.innerHeight >= 600,\n",
       "          height: window.innerHeight,\n",
       "          interactive: false,\n",
       "          legend: true,\n",
       "          loading: false,\n",
       "          playing: false,\n",
       "          processing: false,\n",
       "          renderer: () => &quot;DNE&quot;,\n",
       "          settings: false,\n",
       "          speed: speeds[4],\n",
       "          step: 0,\n",
       "          width: window.innerWidth,\n",
       "        });\n",
       "\n",
       "        // Context helpers.\n",
       "        const rerender = (contextRef.current.rerender = () =>\n",
       "          setRenderCount((renderCountRef.current += 1)));\n",
       "        const setStep = (contextRef.current.setStep = (newStep) => {\n",
       "          contextRef.current.step = newStep;\n",
       "          rerender();\n",
       "        });\n",
       "        const setPlaying = (contextRef.current.setPlaying = (playing) => {\n",
       "          contextRef.current.playing = playing;\n",
       "          rerender();\n",
       "        });\n",
       "        const pause = (contextRef.current.pause = () => setPlaying(false));\n",
       "\n",
       "        const playNext = () => {\n",
       "          const context = contextRef.current;\n",
       "\n",
       "          if (\n",
       "            context.playing &&\n",
       "            context.step < context.environment.steps.length - 1\n",
       "          ) {\n",
       "            setStep(context.step + 1);\n",
       "            play(true);\n",
       "          } else {\n",
       "            pause();\n",
       "          }\n",
       "        };\n",
       "\n",
       "        const play = (contextRef.current.play = (continuing) => {\n",
       "          const context = contextRef.current;\n",
       "          if (context.playing && !continuing) return;\n",
       "          if (!context.playing) setPlaying(true);\n",
       "          if (\n",
       "            !continuing &&\n",
       "            context.step === context.environment.steps.length - 1\n",
       "          ) {\n",
       "            setStep(0);\n",
       "          }\n",
       "          setTimeout(playNext, context.speed);\n",
       "        });\n",
       "\n",
       "        const updateContext = (o) => {\n",
       "          const context = contextRef.current;\n",
       "          Object.assign(context, o, {\n",
       "            environment: { ...context.environment, ...(o.environment || {}) },\n",
       "          });\n",
       "          rerender();\n",
       "        };\n",
       "\n",
       "        // First time setup.\n",
       "        useEffect(() => {\n",
       "          // Timeout is used to ensure useEffect renders once.\n",
       "          setTimeout(() => {\n",
       "            // Initialize context with window.kaggle.\n",
       "            updateContext(window.kaggle || {});\n",
       "\n",
       "            if (window.kaggle.playing) {\n",
       "                play(true);\n",
       "            }\n",
       "\n",
       "            // Listen for messages received to update the context.\n",
       "            window.addEventListener(\n",
       "              &quot;message&quot;,\n",
       "              (event) => {\n",
       "                // Ensure the environment names match before updating.\n",
       "                try {\n",
       "                  if (\n",
       "                    event.data.environment.name ==\n",
       "                    contextRef.current.environment.name\n",
       "                  ) {\n",
       "                    updateContext(event.data);\n",
       "                  }\n",
       "                } catch {}\n",
       "              },\n",
       "              false\n",
       "            );\n",
       "            // Listen for keyboard commands.\n",
       "            window.addEventListener(\n",
       "              &quot;keydown&quot;,\n",
       "              (event) => {\n",
       "                const {\n",
       "                  interactive,\n",
       "                  isInteractive,\n",
       "                  playing,\n",
       "                  step,\n",
       "                  environment,\n",
       "                } = contextRef.current;\n",
       "                const key = event.keyCode;\n",
       "                const zero_key = 48\n",
       "                const nine_key = 57\n",
       "                if (\n",
       "                  interactive ||\n",
       "                  isInteractive() ||\n",
       "                  (key !== 32 && key !== 37 && key !== 39 && !(key >= zero_key && key <= nine_key))\n",
       "                )\n",
       "                  return;\n",
       "\n",
       "                if (key === 32) {\n",
       "                  playing ? pause() : play();\n",
       "                } else if (key === 39) {\n",
       "                  contextRef.current.playing = false;\n",
       "                  if (step < environment.steps.length - 1) setStep(step + 1);\n",
       "                  rerender();\n",
       "                } else if (key === 37) {\n",
       "                  contextRef.current.playing = false;\n",
       "                  if (step > 0) setStep(step - 1);\n",
       "                  rerender();\n",
       "                } else if (key >= zero_key && key <= nine_key) {\n",
       "                  contextRef.current.speed = speeds[key - zero_key];\n",
       "                }\n",
       "                event.preventDefault();\n",
       "                return false;\n",
       "              },\n",
       "              false\n",
       "            );\n",
       "          }, 1);\n",
       "        }, []);\n",
       "\n",
       "        if (contextRef.current.debug) {\n",
       "          console.log(&quot;context&quot;, contextRef.current);\n",
       "        }\n",
       "\n",
       "        // Ability to update context.\n",
       "        contextRef.current.update = updateContext;\n",
       "\n",
       "        // Ability to communicate with ipython.\n",
       "        const execute = (contextRef.current.execute = (source) =>\n",
       "          new Promise((resolve, reject) => {\n",
       "            try {\n",
       "              window.parent.IPython.notebook.kernel.execute(source, {\n",
       "                iopub: {\n",
       "                  output: (resp) => {\n",
       "                    const type = resp.msg_type;\n",
       "                    if (type === &quot;stream&quot;) return resolve(resp.content.text);\n",
       "                    if (type === &quot;error&quot;) return reject(new Error(resp.evalue));\n",
       "                    return reject(new Error(&quot;Unknown message type: &quot; + type));\n",
       "                  },\n",
       "                },\n",
       "              });\n",
       "            } catch (e) {\n",
       "              reject(new Error(&quot;IPython Unavailable: &quot; + e));\n",
       "            }\n",
       "          }));\n",
       "\n",
       "        // Ability to return an action from an interactive session.\n",
       "        contextRef.current.act = (action) => {\n",
       "          const id = contextRef.current.environment.id;\n",
       "          updateContext({ processing: true });\n",
       "          execute(`\n",
       "            import json\n",
       "            from kaggle_environments import interactives\n",
       "            if &quot;${id}&quot; in interactives:\n",
       "                action = json.loads('${JSON.stringify(action)}')\n",
       "                env, trainer = interactives[&quot;${id}&quot;]\n",
       "                trainer.step(action)\n",
       "                print(json.dumps(env.steps))`)\n",
       "            .then((resp) => {\n",
       "              try {\n",
       "                updateContext({\n",
       "                  processing: false,\n",
       "                  environment: { steps: JSON.parse(resp) },\n",
       "                });\n",
       "                play();\n",
       "              } catch (e) {\n",
       "                updateContext({ processing: resp.split(&quot;\\n&quot;)[0] });\n",
       "                console.error(resp, e);\n",
       "              }\n",
       "            })\n",
       "            .catch((e) => console.error(e));\n",
       "        };\n",
       "\n",
       "        // Check if currently interactive.\n",
       "        contextRef.current.isInteractive = () => {\n",
       "          const context = contextRef.current;\n",
       "          const steps = context.environment.steps;\n",
       "          return (\n",
       "            context.interactive &&\n",
       "            !context.processing &&\n",
       "            context.step === steps.length - 1 &&\n",
       "            steps[context.step].some((s) => s.status === &quot;ACTIVE&quot;)\n",
       "          );\n",
       "        };\n",
       "\n",
       "        return h`\n",
       "          <${Context.Provider} value=${contextRef.current}>\n",
       "            <${Player} />\n",
       "          <//>`;\n",
       "      };\n",
       "\n",
       "      preact.render(h`<${App} />`, document.body);\n",
       "    </script>\n",
       "  </body>\n",
       "</html>\n",
       "\" width=\"300\" height=\"300\" frameborder=\"0\"></iframe> "
      ],
      "text/plain": [
       "<IPython.core.display.HTML object>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "# Agents play one game round\n",
    "env.run([agent_leftmost, agent_random])\n",
    "\n",
    "# Show the game\n",
    "env.render(mode=\"ipython\")"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "The outcome of a single game is usually not enough information to figure out how well our agents are likely to perform.  To get a better idea, we'll calculate the win percentages for each agent, averaged over multiple games.  For fairness, each agent goes first half of the time.\n",
    "\n",
    "To do this, we'll use the `get_win_percentages()` function (defined in a hidden code cell).  _To view the details of this function, click on the \"Code\" button below._"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {
    "_kg_hide-input": true
   },
   "outputs": [],
   "source": [
    "\n",
    "def get_win_percentages(agent1, agent2, n_rounds=100):\n",
    "    # Use default Connect Four setup\n",
    "    config = {'rows': 6, 'columns': 7, 'inarow': 4}\n",
    "    # Agent 1 goes first (roughly) half the time          \n",
    "    outcomes = evaluate(\"connectx\", [agent1, agent2], config, [], n_rounds//2)\n",
    "    # Agent 2 goes first (roughly) half the time      \n",
    "    outcomes += [[b,a] for [a,b] in evaluate(\"connectx\", [agent2, agent1], config, [], n_rounds-n_rounds//2)]\n",
    "    print(\"Agent 1 Win Percentage:\", np.round(outcomes.count([1,-1])/len(outcomes), 2))\n",
    "    print(\"Agent 2 Win Percentage:\", np.round(outcomes.count([-1,1])/len(outcomes), 2))\n",
    "    print(\"Number of Invalid Plays by Agent 1:\", outcomes.count([None, 0]))\n",
    "    print(\"Number of Invalid Plays by Agent 2:\", outcomes.count([0, None]))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Which agent do you think performs better against the random agent: the agent that always plays in the middle (`agent_middle`), or the agent that chooses the leftmost valid column (`agent_leftmost`)?  Let's find out!"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Agent 1 Win Percentage: 0.85\n",
      "Agent 2 Win Percentage: 0.0\n",
      "Number of Invalid Plays by Agent 1: 15\n",
      "Number of Invalid Plays by Agent 2: 0\n"
     ]
    }
   ],
   "source": [
    "get_win_percentages(agent1=agent_middle, agent2=agent_random)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Agent 1 Win Percentage: 0.85\n",
      "Agent 2 Win Percentage: 0.15\n",
      "Number of Invalid Plays by Agent 1: 0\n",
      "Number of Invalid Plays by Agent 2: 0\n"
     ]
    }
   ],
   "source": [
    "get_win_percentages(agent1=agent_leftmost, agent2=agent_random)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "It looks like the agent that chooses the leftmost valid column performs best!\n",
    "\n",
    "# Your turn\n",
    "\n",
    "These agents are quite simple.  As the course progresses, you'll create increasingly complex agents!  Continue to **[make your first competition submission](https://www.kaggle.com/kernels/fork/7677818)**."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "---\n",
    "\n",
    "\n",
    "\n",
    "\n",
    "*Have questions or comments? Visit the [course discussion forum](https://www.kaggle.com/learn/intro-to-game-ai-and-reinforcement-learning/discussion) to chat with other learners.*"
   ]
  }
 ],
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