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SNAKE GAME-1.cpp

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+#include <iostream>
+#include <conio.h>
+#include <cstdlib> // for the rand funtion
+#include <unistd.h>  // for the sleep funtion
+
+using namespace std;
+
+bool gameover;
+
+const int width = 30;
+
+const int height = 17;
+
+int x, y, fruitX, fruitY, score;
+
+int tailX[100], tailY[100]; //snake coordinates
+
+int nTail;
+
+enum eDirecton {STOP = 0, LEFT,RIGHT, UP,DOWN}; // Controls
+
+eDirecton dir;
+
+void Setup() {
+   gameover = false;
+
+   dir = STOP;
+
+   x = width / 2;
+
+   y = height / 2;
+
+   fruitX = rand() % width; //display fruit in a random place
+
+   fruitY = rand() % height; score = 0;
+}
+void Draw() {
+
+    system("cls");
+
+    cout<<"########## SNAKE GAME ##########";
+	cout << endl;
+	cout<<"################################";
+	cout << endl;
+	cout<<"###########  ENJOY   ###########";
+	cout << endl;
+
+    for(int i = 0; i < width+2; i++)
+    cout << "#";
+
+    cout << endl ;
+
+    for (int i = 0; i < height ; i++) {
+
+       for (int j = 0; j < width; j++) {
+
+          if (j == 0)
+          cout << "#"; //walls
+
+          if (i == y && j == x)
+          cout << "@"; // snake tale
+
+          else if (i == fruitY && j == fruitX )
+          cout << "%"; // change it to change the fruit
+
+          else {
+                 bool print = false;
+
+                 for (int k = 0; k< nTail ; k++) {
+
+                      if (tailX [k] == j && tailY [k] == i) {
+
+                          cout << "*"; print = true;
+                       }
+                    }
+
+                 if (!print) 
+				 cout << " ";
+
+                }
+               if (j == width -1)
+               cout << "#";
+       }
+
+       cout << endl;
+    }
+
+   for (int i = 0; i< width+2; i++)
+   cout << "#";
+
+   cout << endl;
+
+   cout << "Score:" << score << endl ;
+}
+void DrawEnd(){
+	system("cls");
+	 cout<<"########## thanks for ##########";
+	cout << endl;
+	cout<<"############ playing ############";
+	cout << endl;
+	cout<<"########### YOUR SCORE IS :  "<< score;
+	cout << endl;
+	sleep(5);
+}
+
+void Input ()
+{
+   if (_kbhit ()) {  //get directions
+
+      switch (_getch ()) {
+
+         case 'a':
+             dir = LEFT;
+             break;
+
+         case 'd':
+             dir = RIGHT;
+             break;
+
+         case 'w':
+             dir = UP;
+             break;
+
+         case 's':
+             dir = DOWN ;
+             break;
+
+         case 'x':
+             gameover = true;
+             break;
+        }
+    }
+}
+void algorithm1()     //game logic 1
+{
+    int prevX = tailX [0];
+
+    int prevY = tailY [0];
+
+    int prev2X, prev2Y;
+
+    tailX[0] = x;
+
+    tailY[0] = y;
+
+    for(int i = 1;i < nTail ; i++) {
+
+      prev2X = tailX[i];
+
+      prev2Y = tailY[i];
+
+      tailX[i] = prevX;
+
+      tailY[i] = prevY;
+
+      prevX = prev2X;
+
+      prevY = prev2Y ;
+    }
+    switch (dir) {
+
+      case LEFT:
+         x--;
+         break;
+
+      case RIGHT:
+         x++;
+         break;
+
+      case UP:
+         y--;
+         break;
+
+      case DOWN:
+         y++;
+         break;
+
+      default:
+         break;
+
+    }
+
+
+    if(x >= width || x == 0 || y >= height || y == 0 )
+     gameover = true; 
+
+    for (int i =0; i< nTail ;i++)
+    if (tailX[i] == x && tailY[i] == y)
+    gameover = true;
+
+    if (x == fruitX && y == fruitY) {
+       score +=15;
+
+       fruitX = rand() % width;
+
+       fruitY = rand() % height;
+
+       nTail ++;
+   }
+   if(gameover == true){
+   	DrawEnd();
+   }
+}
+
+void algorithm2()         // game logic 2
+{
+    int prevX = tailX [0];
+
+    int prevY = tailY [0];
+
+    int prev2X, prev2Y;
+
+    tailX[0] = x;
+
+    tailY[0] = y;
+
+    for(int i = 1;i < nTail ; i++) {
+
+      prev2X = tailX[i];
+
+      prev2Y = tailY[i];
+
+      tailX[i] = prevX;
+
+      tailY[i] = prevY;
+
+      prevX = prev2X;
+
+      prevY = prev2Y ;
+    }
+    switch (dir) {
+
+      case LEFT:
+         x--;
+         break;
+
+      case RIGHT:
+         x++;
+         break;
+
+      case UP:
+         y--;
+         break;
+
+      case DOWN:
+         y++;
+         break;
+
+      default:
+         break;
+
+    }
+
+    if (x >= width)
+	 x =0;
+	else if (x <0)
+	 x = width -1;
+
+     if (y >= height)
+	  y = 0;
+	 else if (y < 0)
+	  y = height - 1; 
+
+    for (int i =0; i< nTail ;i++)
+    if (tailX[i] == x && tailY[i] == y)
+    gameover = true;
+
+    if (x == fruitX && y == fruitY) {
+       score +=10;
+
+       fruitX = rand() % width;
+
+       fruitY = rand() % height;
+
+       nTail ++;
+   }
+   if(gameover == true){
+   	DrawEnd();
+   }
+}
+
+
+int main()
+{
+	int choice;
+	cout<< "enter 1 for simple level and 2 for hard level";
+	cout << endl;
+	cin >> choice;
+	switch(choice)
+	{
+	case 1:  //simple level of the game
+
+        Setup();
+
+        while (!gameover)
+	   {
+
+             Draw ();
+
+             Input ();
+
+             algorithm2 ();
+         }
+
+        break;
+
+    case 2:  // hard level of the game
+
+    		 Setup();
+
+        while (!gameover) {
+
+        Draw ();
+
+        Input ();
+
+        algorithm1 ();
+        }
+
+        break;
+
+    default:
+	  cout << "Invalid input";    
+}
+    return 0;
+}