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snake.py

@@ -7,26 +7,63 @@ 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
+
 # 背景
 background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
 
+left = pygame.image.load('left.png')
+up = pygame.image.load('up.png')
+down = pygame.image.load('down.png')
+
+x,y=240,120
+position=[(180,90),(180,120),(210,120),(x,y)]
+
+diretion = "right"
+snake_hand = right
+
 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()
+        elif event.type == locals.KEYDOWN:
+            if event.key ==locals.K_RIGHT and diretion != "left":
+                diretion="right"
+                snake_hand = right
+            if event.key ==locals.K_LEFT and diretion != "right":
+                diretion="left"
+                snake_hand = left
+            if event.key ==locals.K_UP and diretion != "down":
+                diretion="up"
+                snake_hand = up
+            if event.key ==locals.K_DOWN and diretion != "up":
+                diretion="down"
+                snake_hand = down
+    #头部坐标
+    if diretion == "right":
+        x+=30
+    elif diretion == "left":
+        x-=30
+    elif diretion == "up":
+        y-=30
+    else:
+        y+=30
+
+    #x+=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))
-    # 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(snake_hand,position[-1])
+    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()
+    FPSCLOCK.tick(3)    #监听时间 间隔
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