save project

snake.py

@@ -18,13 +18,34 @@ body = pygame.image.load('body.png')
 x,y = 240,120
 position = [(180,90),(180,120),(210,120),(x,y)]
 
+setheading="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()
+        elif event.type == locals.KEYDOWN:
+            if event.type == locals.K_RIGHT and setheading != "left":
+                setheading="right"
+            if event.type == locals.K_LEFT and setheading != "right":
+                setheading="left"
+            if event.type == locals.K_UP and setheading != "down":
+                setheading="up"
+            if event.type == 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
+
+
 
-    x += 30
     position.append((x , y)) 
     position.pop(0)