CPPND: Capstone Snake Game Example

I added two new features to the basic snake game: walls and different food types.

The walls are gray spots in the game that cause the snake to die when they are hit.

I decided to create four different food types that affect the speed and direction of the snake: normal, fast, slow, and reverse. All food types cause the snake to grow in lenth by 1

• The normal food type increases the snake's speed by 0.02
• The fast food type increases the snake's speed by 0.04
• The slow food type decreases the snake's speed by 0.02
• The reverse food type causes the snake to switch directions

Rubric Criteria

• Loops / functions / IO Inputs

  • Functions
    • I created several new functions: EatFood in snake.cpp, PlaceWall in game.cpp, and SetFoodColor in renderer.cpp
    • Each function I created either deals with the different types of foods to force the snake to do different things or places walls
    • I also edited many functions in the code to take in a Food instance instead of an SDL_Point for the food items.
  • Control Structures
    • I added switch statements on both food type and direction to do different things when different foods are eaten and to implement my reverse direction food
    • I used a variety of vector methods including push_back, pop_back, and reverse to reverse the direction of my snake.

• Object oriented programming

  • I created a new class Food that holds the type of food and the location. When a new piece of food is created, the food constructor randomly assigns a type. The food types are contained in an enum which is used in game, snake, and render
  • In Food.h, I overrode the cout function to allow the type of food to be printed to the console.
  • In Food.h, I defined both the construtor and the destructor
  • New methods are self documenting such as Snake::EatFood, Renderer::SetFoodColor, and Game::PlaceWall
  • I specified every new variable as either private or public as apprpriate

• Memory Managment

  • SetFoodColor and EatFood both pass food in as a reference.

Dependencies for Running Locally

• cmake >= 3.7
  • All OSes: click here for installation instructions
• make >= 4.1 (Linux, Mac), 3.81 (Windows)
  • Linux: make is installed by default on most Linux distros
  • Mac: install Xcode command line tools to get make
  • Windows: Click here for installation instructions
• SDL2 >= 2.0
  • All installation instructions can be found here

  Note that for Linux, an apt or apt-get installation is preferred to building from source.

• gcc/g++ >= 5.4
  • Linux: gcc / g++ is installed by default on most Linux distros
  • Mac: same deal as make - install Xcode command line tools
  • Windows: recommend using MinGW

Basic Build Instructions

1. Clone this repo.
2. Make a build directory in the top level directory: mkdir build && cd build
3. Compile: cmake .. && make
4. Run it: ./SnakeGame.

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This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.