save project

snake.py

@@ -3,7 +3,7 @@ from pygame import locals
 
 # 初始化pygame，为使用硬件做准备
 pygame.init()
-
+s="right"
 # 创建一个窗口
 screen = pygame.display.set_mode((660, 480))
 x=240
@@ -20,8 +20,27 @@ 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_UP  and  s!="down":
+                s="up"
+            if event.key==locals.K_DOWN  and  s!="up":
+                    s="down"
+            if event.key==locals.K_LEFT  and  s!="right":
+                s="left"
+            if event.key==locals.K_RIGHT  and  s!="left":
+                s="right"
     x=x+30
+
+    
+    if s=="right":
+        x=x+30
+    if s=="left":
+        x=x-30
+    if s=="up":
+        y=y-30
+    if s=="down":
+        y=y+30
+
     zb.append((x,y))
     zb.pop(0)
     # 将背景图画上去
@@ -34,5 +53,5 @@ while True:
     screen.blit(food, (360, 300))
     # 刷新画面
     pygame.display.update()
-    
+
     G.tick(3)
\ No newline at end of file