save project

snake.py

@@ -16,13 +16,31 @@ body = 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'
 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    
+        if event.type == locals.KEYDOWN:
+            if event.key == locals.K_RIGHT and setheading != "left":
+                setheading = 'right'
+            if event.key == locals.K_LEFT and setheading != "right":
+                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 == "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)
     # 将背景图画上去
     # 将背景图画上去