save project

snake.py

@@ -12,21 +12,43 @@ 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')
+down=pygame.image.load('down.png')
+up=pygame.image.load('up.png')
 x,y=240,120
 x,y=240,120
 position=[(210,120),(180,120),(180,90),(x,y)]
 position=[(210,120),(180,120),(180,90),(x,y)]
+setheading='right'
+snakehead=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!=right:
+                setheading='right'
+                snakehead=right
+        x=x+30        
+
+            if  event.key==locals.K_LEFT and setheading!=left:
+                setheding='left'
+                snakehead=left
+        x=x-30
+            if  event.key==locals.K_DOWN and setheading!=down:
+                setheading='down'
+                snakehead=down
+               
+            if  event.key==locals.K_UP and setheading!=up:   
+                setheading='up' 
+                snakehead=up
+                
+    
     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
     screen.blit(background, (0, 0))
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
     # 将贪吃蛇画上去
-    screen.blit(right, position[-1])
+    screen.blit(snakehead, position[-1])
     # 将贪吃蛇的身体画上去
     # 将贪吃蛇的身体画上去
     for i in range(len(position)-1):
     for i in range(len(position)-1):
         screen.blit(body,position[i])
         screen.blit(body,position[i])