save project

snake.py

@@ -11,6 +11,8 @@ FPS=pygame.time.Clock()
 x,y=240,120# 背景
 s=[(180,90),(180,120),(210,120),(x,y)]
 
+setheading="ringt"
+
 background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
@@ -21,7 +23,23 @@ while True:
         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='ringt'
+            if event.key==locals.K_LEFT and setheading !="ringt":
+                setheading='left'
+            if event.key==locals.K_UP and setheading !="down":
+                setheading='up'
+            if event.key==locals.K_DOWN and setheading !="up":
+                setheading='down'
+            
+    if setheading=="ringt":
         x+=30
+    elif setheading=="left":
+        x-=30
+    elif setheading=="up":
+        y+=30
+        
     s.append((x,y))
     s.pop(0)# 将背景图画上去
     screen.blit(background, (0, 0))