save project

snake.py

@@ -12,15 +12,43 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
 body = pygame.image.load('body.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
 x,y=240,120
 pocsition=[(180,90),(180,20),(210,120),(x,y)]
 pocsition=[(180,90),(180,20),(210,120),(x,y)]
+
+setheating='right'
+snake_head=right
+
 while True:
 while True:
     for event in pygame.event.get():
     for event in pygame.event.get():
         if event.type == locals.QUIT:
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             # 接收到退出事件后退出程序
             exit()
             exit()
+        if event.type==locals.KEYDOWN:
+            if event.key==locals.k_RIGHT and setheating !='left':
+                setheating='right'
+                snake_head=right
+            if event.key==locals.K_LEFT and setheating !='right':
+                setheating='left'
+                snake_head=left
+            if event.key==locals.k_UP and setheating !='down':
+                setheating='up'
+                snake_head=up
+            if event.key==locals.K_DOWN and setheating !='up':
+                setheating='down'
+                snake_head=down
+    if setheating=='right':
         x+=30
         x+=30
+    elif setheating=='left':
+        x-=30
+    elif setheating=='up':
+        y-=30
+    elif setheating=='down':
+        y+=30    
     pocsition.append((x,y))
     pocsition.append((x,y))
     pocsition.pop(0)
     pocsition.pop(0)
     # 将背景图画上去
     # 将背景图画上去