save project

snake.py

@@ -10,23 +10,48 @@ fps=pygame.time.Clock()
 # 背景
 background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
+left = pygame.image.load('left.png')
+up = pygame.image.load('up.png')
+down = pygame.image.load('down.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
 x=240
 y=120
 pos=[(180,90),(180,120),(210,120),(x,y)]
+head='right'
+tou=right
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
+        if event.type == locals.KEYDOWN:
+            if event.key==locals.K_RIGHT and head!='left':
+                head='right'
+            if event.key==locals.K_LEFT and head!='right':
+                head='left'
+            if event.key==locals.K_UP and head!='down':
+                head='up'
+            if event.key==locals.K_DOWN and head!='up':
+                head='down'
+    if head=="right":
         x+=30
+        tou=right
+    if head=="left":
+        x-=30
+        tou=left
+    if head=="down":
+        y+=30
+        tou=down
+    if head=="up":
+        y-=30
+        tou=up
     pos.append((x,y))
     pos.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(right, (x, y))
+    screen.blit(tou, (x, y))
     # 将贪吃蛇的身体画上去
     for i in range(len(pos)-1):
         screen.blit(body, pos[i])