save project

snake.py

@@ -20,8 +20,24 @@ while True:
         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()
-        if event.type==locals.KEYDOWN
+        elif 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_DOWN and setheading !="up":
+                setheading !="down"
+            if event.key ==locals.K_UP and setheading !="down":
+                setheading !="up"
+
+    if setheading=="right":
         x+=30
         x+=30
+    elif setheading=="left":
+        x-=30
+    elif setheading=="up":
+        y-=30
+    else:
+        y+=30
     b.append((x,y))
     b.append((x,y))
     b.pop(0)
     b.pop(0)