save project

snake.py

@@ -12,14 +12,39 @@ 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
+setheading = "right"
+snake_head = right
 position = [(180,90),(180,120),(210,120),(x,y)]
 position = [(180,90),(180,120),(210,120),(x,y)]
 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 setheading !="left":
+                setheading = "right"
+                snake_head = right
+            if event.key == locals.K_RIGHT and setheading !="right":
+                setheading = "left"
+                snake_head = left
+            if event.key == locals.K_RIGHT and setheading !="up":
+                setheading = "down"
+                snake_head = down
+            if event.key == locals.K_RIGHT and setheading !="down":
+                setheading = "up"
+                snake_head = up
+if setheading == "right":
     x+=30
     x+=30
+if setheading == "left":
+    x-=30
+if setheading == "up":
+    y-=30
+if setheading == "down":
+    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