save project

snake.py

@@ -28,13 +28,20 @@ while True:
                  
                  
             if event.key==locals.K_LEFT and setheading!="right":
             if event.key==locals.K_LEFT and setheading!="right":
                 setheading="left"
                 setheading="left"
-                x -=30
+                
             if event.key==locals.K_UP and setheading!="down":
             if event.key==locals.K_UP and setheading!="down":
                 setheading="up"
                 setheading="up"
-                y -=30
+                
             if event.key==locals.K_DOWN and setheading!="up":
             if event.key==locals.K_DOWN and setheading!="up":
                 setheading="down"
                 setheading="down"
-                y +=30
+        if setheading == "right":
+            x += 30
+        elif setheading == "left":
+            x -= 30
+        elif setheading == "up":
+            y -= 30
+        else:
+            y += 30
     positon.append((x,y))
     positon.append((x,y))
     positon.pop(0)
     positon.pop(0)
     # 将背景图画上去
     # 将背景图画上去