save project

snake.py

@@ -16,12 +16,36 @@ body = pygame.image.load('body.png')
 
 x, y = 240, 120
 position = [(180,90),(180,120),(210,120),(x,y)]
+setheating='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()
-    x += 30
+        if event.type == locals.KEYDOWN:
+            if event.key == locals.K_RIGHT and setheating !="left":
+                setheating = 'right'
+                snake_head =right
+            if event.key == locals.K_LEFT and setheating !="right":
+                setheating = 'left'
+                snake_head = left
+            if event.key == locals.K_UP and setheating !="down":
+                setheating = 'up'
+                snake_head = up
+            if event.key == locals.K_DOWN and setheating !="up":
+                setheating = 'down'
+                snake_head = down
+    if setheating =="right":
+        x +=30
+    elif setheating =="left":
+        x -=30
+    elif setheating =="up":
+        y -=30
+    else:
+        y +=30
+            
+    # x += 30
     position.append((x,y))
     position.pop(0)
     # 将背景图画上去