save project

snake.py

@@ -12,14 +12,40 @@ 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)]
+setheading = "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.K_RIGHT and setheading != "left":
+            setheading = "right"
+            snake_head= right 
+        if event.type == locals.K_RIGHT and setheading != "right":
+            setheading = "left"
+            snake_head= left 
+        if event.type == locals.K_RIGHT and setheading != "down":
+            setheading = "up"
+            snake_head= up 
+        if event.type == locals.K_RIGHT and setheading != "up":
+            setheading = "down"
+            snake_head= down 
+
+    
+     if setheading == "right"
         x += 30
         x += 30
+    elif setheading == "left"
+        x -= 30
+    if setheading == "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