利用键盘按键操控地图

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stage.addEventListener(KeyboardEvent.KEY_DOWN,controlMap); function controlMap(me:KeyboardEvent){     switch(me.keyCode){         case Keyboard.UP:         map_mc.y -= 2;         act_txt.text="上移";         break;         case Keyboard.DOWN:         map_mc.y += 2;         act_txt.text="下移";         break;         case Keyboard.LEFT:         map_mc.x -= 2;         act_txt.text="左移";         break;         case Keyboard.RIGHT:         map_mc.x += 2;         act_txt.text="右移";         break;         case Keyboard.PAGE_UP:         map_mc.scaleX += .1;         map_mc.scaleY += .1;         act_txt.text="放大地圖";         break;         case Keyboard.PAGE_DOWN:         map_mc.scaleX -= .1;         map_mc.scaleY -= .1;         act_txt.text="缩小地图";         break;         case Keyboard.HOME:         map_mc.rotation += 10;         act_txt.text="向右旋转地图";         break;         case Keyboard.END:         map_mc.rotation -= 10;         act_txt.text="向左旋转地图";         break;     }     x_txt.text=String(map_mc.x);     y_txt.text=String(map_mc.y);     zoom_txt.text=String(Math.floor(map_mc.scaleX * 100)) + "%";     rot_txt.text=String(map_mc.rotation) + "°"; }

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