Flash制作物体弹跳电脑游戏

Flash制作物体弹跳电脑游戏(6)             place_brick.gotoAndStop(level[y][x]);
        }
    }
}
_root.attachMovie("player", "player", _root.getNextHighestDepth(), {_x:40, _y:40});
player.onEnterFrame = function() {
    yspeed += gravity;
    if (yspeed>max_yspeed) {
        yspeed = max_yspeed;
    }
    if (Key.isDown(Key.LEFT)) {
        xspeed = -walk_speed;
    }
    if (Key.isDown(Key.RIGHT)) {
        xspeed = walk_speed;
    }
    while (_root.lev.hitTest(this._x, this._y+this._height/2-1+yspeed, true)) {
        yspeed--;
    }
    while (_root.lev.hitTest(this._x-this._width/2+1+xspeed, this._y, true)) {
        xspeed++;
    }
    while (_root.lev.hitTest(this._x+this._width/2-1+xspeed, this._y, true)) {
        xspeed--;
    }
    this._y += yspeed;
    this._x += xspeed;
    xspeed = 0;
};

　　效果（这时按键盘左右方向键你可以看到效果）

　　最后让物体能够蹦起来啊！

xspeed = 0;