save project

snake.py

@@ -13,8 +13,9 @@ FPSCLOCK = pygame.time.clock()
 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')
+down = pygame.image.load('down.png')
+up = pygame.image.load('up.png')
 x,y = 240,120
 position = [(180,90),(180,120),(210,120),(x,y)]
 while True:
@@ -22,7 +23,36 @@ while True:
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
-x += 30
+        elif event.key==locals.KEYDOWN
+            if event.key==locals.K_BACKGROUND and setheading!=background:
+                setheading="background"
+                snake_head="background"
+        elif event.key==locals.KEYDOWN
+            if event.key==locals.K_BACKGROUND and setheading!=right:
+                setheading="right"
+                snake_head="right"
+        elif event.key==locals.KEYDOWN
+            if event.key==locals.K_BACKGROUND and setheading!=food:
+                setheading="food"
+                snake_head="food"
+        elif event.key==locals.KEYDOWN
+            if event.key==locals.K_BACKGROUND and setheading!=left:
+                setheading="left"
+                snake_head="left"
+        elif event.key==locals.KEYDOWN
+            if event.key==locals.K_BACKGROUND and setheading!=down:
+                setheading="down"
+                snake_head="down"
+        elif event.key==locals.KEYDOWN
+            if event.key==locals.K_BACKGROUND and setheading!=up:
+                setheading="up"
+                snake_head="up"
+if setheading==right:
+    x += 30
+elif setheading==left:
+    x = 30
+elif setheading==down:
+    y += 30
 position.append(x,y)
 position.pop(0)
     # 将背景图画上去