在移动浏览器中滑动表格

时间:2018-05-27 17:31:11

标签: mobile browser dart

我和我的队友正在用飞镖手机浏览器编写游戏“Battlecity”。问题是在移动浏览器中滑动坦克方向(从左到右,从右到左等)。它有很大的作用(对于某些reasond在Chrome浏览器中不起作用)。 如果您在移动设备上启动游戏,则可以更好地查看问题(只需打开游戏链接:https://javajunikorn.github.io/BattleCity/build/web/html/test.html) 有趣的是,问题只存在于游戏领域的滑动上(在我们的例子中它是27 * 27 html表)。如果我们从游戏中解脱出来,那就好了。

以下是我们的控制器代码:

class Direction{


  Point first, last;
  Game game;

  void startListening(){


    window.onTouchStart.listen((ev) {
      last = null;
      first = ev.touches.first.client;
    });

    window.onTouchMove.listen((ev){
      last = ev.touches.first.client;
    });

    window.onTouchEnd.listen((ev) {
      if(last == null || first.distanceTo(last) < 20)
        game.player.shoot();
      else {
        Point d = first - last;
        if(d.x.abs() > d.y.abs()){
          //Waagerecht
          if( first.x > last.x){
            //links
            game.player.changeDirection(Directions.left);
          }
          else{
            //rechts
            game.player.changeDirection(Directions.right);
          }
        }
        else{
          //Senkrecht
          if(first.y > last.y){
            //Up
            game.player.changeDirection(Directions.up);
          }
          else{
            //Down
            game.player.changeDirection(Directions.down);

          }
        }
      }
    });


    window.onKeyPress.listen((k) {
      //Shoot
      if(k.which == 32) { //spacebar
        game.player.shoot();
      }
      //Up
      if(k.which == 119 || k.keyCode == KeyCode.UP){
        game.player.changeDirection(Directions.up);
      }
      //Down
      if(k.which == 115 || k.keyCode == KeyCode.DOWN){
        game.player.changeDirection(Directions.down);
      }
      //Left
      if(k.which == 97 || k.keyCode == KeyCode.LEFT){
        game.player.changeDirection(Directions.left);
      }
      //Right
      if(k.which == 100 || k.keyCode == KeyCode.RIGHT){
        game.player.changeDirection(Directions.right);
      }
    });

  }

}

0 个答案:

没有答案