save project

snake.py

@@ -13,15 +13,42 @@ 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')
+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
 position=[(180,90),(180,120),(210,120),(x,y)]
 position=[(180,90),(180,120),(210,120),(x,y)]
+sethending="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()
-    x=x+30
+        elif event,type==locols.KEYDOWN:
+            if event.key==locals.K_RIGHT and sethending !="left":
+                sethending="right"
+                snake_head=right   
+            if event.key==locals.K_RIGHT and sethending !="down":
+                sethending="up"
+                snake_head=up
+            if event.key==locals.K_RIGHT and sethending !="right":
+                sethending="left"
+                snake_head=left 
+            if event.key==locals.K_RIGHT and sethending !="up":
+                sethending="down"
+                snake_head=down
+    if sethending=="right" :
+        x +=30  
+    elif sethending=="left" :
+            x-=30
+    elif sethending=="up" :
+            y -=30
+    else:
+        y +=30
+     
+            
     position.append((x,y))
     position.append((x,y))
     position.pop(0)
     position.pop(0)
     # 将背景图画上去
     # 将背景图画上去