save project

snake.py

@@ -25,27 +25,27 @@ while True:
             # 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:
         if event.type == locals.KEYDOWN:
-            if event.key == locals.K_RIGHT and setheading != "left"
+            if event.key == locals.K_RIGHT and setheading != "left":
                setheading = 'right'
                setheading = 'right'
                snake_head = right
                snake_head = right
-            if event.key == locals.K_LEFT and setheading != "right"
+            if event.key == locals.K_LEFT and setheading != "right":
                setheading = 'left'
                setheading = 'left'
                snake_head = left
                snake_head = left
-            if event.key == locals.K_UP and setheading != "down"    
+            if event.key == locals.K_UP and setheading != "down" :   
                setheading = 'UP'
                setheading = 'UP'
                snake_head = UP
                snake_head = UP
-            if event.key == locals.K_DOWN and setheading != "UP" 
+            if event.key == locals.K_DOWN and setheading != "UP" :
                setheading = 'down'
                setheading = 'down'
                snake_head = down
                snake_head = down
-    else setheading == "right":
+    if setheading == "right":
         x += 30
         x += 30
-    else setheading == "left":
+    elif setheading == "left":
         x -= 30
         x -= 30
-    else setheading == "up":
+    elif setheading == "up":
         y -= 30
         y -= 30
     else:
     else:
         y += 30
         y += 30
-    x += 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