save project

snake.py

@@ -12,14 +12,41 @@ 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')
+lefft= pygame.image.load('body.png')
+up = pygame.image.load('body.png')
+down = pygame.image.load('body.png')
 x,y=240,120
 x,y=240,120
 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+=30
+        elif 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 !="left":
+                setheading='up'
+                snake_head=up
+            if event.key==locals.K_DOWN and setheading !="down":
+                setheading='down'
+                snake_head=down                  
+    if setheading =="right":
+        x +=30
+    elif setheading=="left":
+        x -=30
+    elif setheading=="up":
+        y -=30
+    else:
+        y += 30 
     position.append((x,y))
     position.append((x,y))
     position.pop(0)
     position.pop(0)
     screen.blit(background, (0, 0))
     screen.blit(background, (0, 0))