save project

snake.py

@@ -9,23 +9,48 @@ screen=pygame.display.set_mode((660,480))
 FPSCLOCK=pygame.time.Clock()
 
 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')
 bj=pygame.image.load('bg.png')
 
 x,y=(240,120)
 list=[(180,90),(180,120),(210,120),(x,y)]
+setheading='right'
+snake_head=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 setheading !='left':
+                setheading='right'
+                snake_head=right
+            if event.key == locals.K_LEFT and setheading !='right':
+                setheading='left'
+                snake_head=left
+            if event.key == locals.K_UP and setheading !='down':
+                setheading='up'
+                snake_head=up
+            if event.key == locals.K_DOWN and setheading !='up':
+                setheading='down'
+                snake_head=down
+    if setheading == 'right':
         x+=30
+    elif setheading == 'left':
+        x-=30
+    elif setheading == 'up':
+        y-=30
+    else :
+        y+=30
     list.append((x,y))
     list.pop(0)
     screen.blit(bj,(0,0))
 
-    screen.blit(right,list[-1])
+    screen.blit(snake_head,list[-1])
     
     for i in range(len(list)-1):
         screen.blit(body,list[i])