XNA 将精灵捕捉到图块地图

Question

我正在寻找有关如何处理将精灵捕捉到图块地图的最佳选择。我正在尝试克隆楚楚火箭。如果你不了解这个游戏。这是一款基于图块的游戏，您可以在特定图块上放置箭头来引导地图周围的物体。因此，我需要始终将精灵捕捉到图块的中心，然后检测与占据整个图块或墙壁或其他障碍物的箭头的碰撞。关于检测这些东西的基本方法是什么的任何想法，因为我相信它需要不同类型的碰撞检测。

Answer 1

将精灵捕捉到图块的最简单方法是将它们绘制在图块的中心。碰撞检测可以在更新函数中通过检查关卡对象来完成。

class Mouse
{
  public int XTile;
  public int YTile;
  public int XDelta;
  public int YDelta;
} 

//in Update
if (Level[mouse.YTile][mouse.XTile] == Tiles.Arrow)
{
  //change mouse.XDelta and mouse.YDelta based on the direction of the arrow
}
if (Level[mouse.YTile + YDelta][mouse.XTile + XDelta] == Tiles.Wall)
{
  //change mouse.XDelta and mouse.YDelta based on wall rules
}

//in Draw
int tileSize = 32; //or whatever size tile you are using
spriteBatch.Draw(mouseSprite, new Vector2(mouse.XTile * tileSize, 
    mouse.YTile * tileSize), Color.White);

//or, if the mouseSprite doesn't take up the whole tile
int sizeDifference = tileSize - mouseSprite.Width;
spriteBatch.Draw(mouseSprite, new Vector2(mouse.XTile * tileSize + sizeDifference / 2f, 
    mouse.YTile * tileSize + sizeDifference / 2f), Color.White);