Create Snake-game.py

Program's_Contributed_By_Contributors/Python_Programs/Snake-game.py

@@ -0,0 +1,169 @@
+class Fruit:
+    x = 0
+    y = 0
+    step = 44
+
+    def __init__(self, x, y):
+        self.x = x * self.step
+        self.y = y * self.step
+
+    def draw(self, surface, image):
+        surface.blit(image, (self.x, self.y))
+
+#defining class for player
+class Player:
+    x = [0]
+    y = [0]
+    step = 44
+    direction = 0
+    length = 3
+
+    updateCountMax = 2
+    updateCount = 0
+    #constructor
+    def __init__(self, length):
+        self.length = length
+        for i in range(0, 2000):
+            self.x.append(-100)
+            self.y.append(-100)
+
+        # initial positions, no collision.
+        self.x[1] = 1 * 44
+        self.x[2] = 2 * 44
+
+    def update(self):
+
+        self.updateCount = self.updateCount + 1
+        if self.updateCount > self.updateCountMax:
+
+            # update previous positions
+            for i in range(self.length - 1, 0, -1):
+                self.x[i] = self.x[i - 1]
+                self.y[i] = self.y[i - 1]
+
+            # update position of head of snake
+            if self.direction == 0:
+                self.x[0] = self.x[0] + self.step
+            if self.direction == 1:
+                self.x[0] = self.x[0] - self.step
+            if self.direction == 2:
+                self.y[0] = self.y[0] - self.step
+            if self.direction == 3:
+                self.y[0] = self.y[0] + self.step
+
+            self.updateCount = 0
+
+    def moveRight(self):
+        self.direction = 0
+
+    def moveLeft(self):
+        self.direction = 1
+
+    def moveUp(self):
+        self.direction = 2
+
+    def moveDown(self):
+        self.direction = 3
+
+    def draw(self, surface, image):
+        for i in range(0, self.length):
+            surface.blit(image, (self.x[i], self.y[i]))
+
+#defining class for game
+class Game:
+    def isCollision(self, x1, y1, x2, y2, bsize):
+        if x1 >= x2 and x1 <= x2 + bsize:
+            if y1 >= y2 and y1 <= y2 + bsize:
+                return True
+        return False
+
+
+class Application:
+    winWidth = 700
+    winHeight = 700
+    player = 0
+    fruit = 0
+
+    def __init__(self):
+        self._running = True
+        self.displaySurface = None
+        self.imgSurface = None
+        self.fruitSurface = None
+        self.game = Game()
+        self.player = Player(1)
+        self.fruit = Fruit(5, 5)
+
+    def on_init(self):
+        pygame.init()
+        self.displaySurface = pygame.display.set_mode((self.winWidth, self.winHeight), pygame.HWSURFACE)
+
+        pygame.display.set_caption('KrazyProgrammer')
+        self._running = True
+        #set an image  of size 30x30 for snake
+        self.imgSurface = pygame.image.load("snake.png").convert()
+        # set an image  of size 30x30 for fruit
+        self.fruitSurface = pygame.image.load("fruit.png").convert()
+
+    def on_event(self, event):
+        if event.type == QUIT:
+            self._running = False
+
+    def on_loop(self):
+        self.player.update()
+
+        # does snake eat fruit?
+        for i in range(0, self.player.length):
+            if self.game.isCollision(self.fruit.x, self.fruit.y, self.player.x[i], self.player.y[i], 44):
+                self.fruit.x = randint(2, 9) * 44
+                self.fruit.y = randint(2, 9) * 44
+                self.player.length = self.player.length + 1
+
+        # does snake collide with itself?
+        for i in range(2, self.player.length):
+            if self.game.isCollision(self.player.x[0], self.player.y[0], self.player.x[i], self.player.y[i], 40):
+                print("Snake Collision: ")
+                exit(0)
+
+        pass
+
+    def on_render(self):
+        #set background color
+        self.displaySurface.fill((0,0,0))
+        self.player.draw(self.displaySurface, self.imgSurface)
+        self.fruit.draw(self.displaySurface, self.fruitSurface)
+        pygame.display.flip()
+
+    def on_cleanup(self):
+        pygame.quit()
+
+    def on_execute(self):
+        if self.on_init() == False:
+            self._running = False
+
+        while (self._running):
+            pygame.event.pump()
+            keys = pygame.key.get_pressed()
+
+            if (keys[K_RIGHT]):
+                self.player.moveRight()
+
+            if (keys[K_LEFT]):
+                self.player.moveLeft()
+
+            if (keys[K_UP]):
+                self.player.moveUp()
+
+            if (keys[K_DOWN]):
+                self.player.moveDown()
+            #press esc button to terminate the application
+            if (keys[K_ESCAPE]):
+                self._running = False
+            self.on_loop()
+            self.on_render()
+            time.sleep(50.0 / 1000.0);
+        self.on_cleanup()
+
+#running application
+if __name__ == "__main__":
+    objApp = Application()
+    objApp.on_execute()