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snake.py

@@ -6,27 +6,70 @@ pygame.init()
 
 # 创建一个窗口
 screen = pygame.display.set_mode((660, 480))
-
+FPSCLOCK = pygame.time.Clock() # pygame时钟，控制游戏速度（帧数）
 # 背景
 background = pygame.image.load('bg.png')
-right = pygame.image.load('right.png')
+right = pygame.image.load('right.png')  #向右
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
+left = pygame.image.load('left.png')  #向左
+up = pygame.image.load('up.png')    #向上
+down = pygame.image.load('down.png')  #向下
+x , y = 240 , 120 #蛇头初始化坐标
+
+position=[(210, 120),(180, 120),(180, 90),(x, y)]
+
+setheaing='right'
+
+snake_head = right  #初始化图片
 
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
+        if event.type == locals.KEYDOWN:
+            if event.key == locals.K_RIGHT and setheaing != 'left':
+                setheaing = 'right'
+                snake_head = right
+            if event.key == locals.K_LEFT and setheaing != 'right':
+                setheaing = 'left'
+                snake_head = left
+            if event.key == locals.K_UP and setheaing != 'down':
+                setheaing = 'up'
+                snake_head = up
+            if event.key == locals.K_DOWN and setheaing != 'up':
+                setheaing = 'down'
+                snake_head = down
+    #设置贪吃蛇头部坐标    
+    if setheaing == 'right':   
+        x += 30
+    elif setheaing == 'left':
+        x -= 30
+    elif setheaing == 'up':
+        y -= 30
+    else:
+        y += 30
+
+    position.append((x,y))
+    position.pop(0)
+
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(right, (240, 120))
+    screen.blit(snake_head, (x, y))
     # 将贪吃蛇的身体画上去
-    screen.blit(body, (210, 120))
-    screen.blit(body, (180, 120))
-    screen.blit(body, (180, 90))
+    # screen.blit(body, (210, 120))
+    # screen.blit(body, (180, 120))
+    # screen.blit(body, (180, 90))
+
+    for i in range(len(position)-1):
+        screen.blit(body,position[i])
+
     # 将果实画上去
     screen.blit(food, (360, 300))
+    
     # 刷新画面
-    pygame.display.update()
\ No newline at end of file
+    pygame.display.update()
+    FPSCLOCK.tick(3)
+    
\ No newline at end of file