save project

snake.py

@@ -12,18 +12,42 @@ 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
 
 
 FPSCLOCK=pygame.time.Clock()
 FPSCLOCK=pygame.time.Clock()
 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()
-    x=x+30
+        if event.type== locals.KEYDOWN:
+            if event.key == locals.K_RIGHT and setheading !="left":
+                setheading ="right"
+                snake_head=right
+            if event.key == locals.K_DOWN and setheading !="up":
+                    setheading ="down"
+                    snake_head=down
+            if event.key == locals.K_UP and setheading !="down":
+                    setheading ="up"
+                    snake_head=up
+            if event.key == locals.K_LEFT and setheading !="right":
+                    setheading ="left"
+                    snake_head=left
+    if setheading == "right":
+        x = x+30
+    if setheading == "up":
+        y = y-30
+    if setheading == "left":
+        x = x-30
+    if setheading == "down":
+        y=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