Question

我正在使用Libgdx库创建一个RPG游戏，我在设置碰撞检测的矩形方面遇到了困难。我能够在我的主角周围绘制一个矩形，并且我知道如何在碰撞发生时处理碰撞的代码。问题是我需要在碰撞层中的瓷砖周围绘制矩形（我的碰撞层不是对象层）。如果有人能够举例说明如何写这个，甚至指出我正确的方向，这将是非常有帮助的。

图块大小为32x32

这是我到目前为止用于绘制指定图块周围的矩形的代码

public void collisionSetUp(){
    TiledMapTileLayer layer;
    layer = (TiledMapTileLayer) map.getLayers().get("Bushes");
    float tileWidth = layer.getTileWidth(); //the tile is a perfect square so only one side is required


    //go through the entire layer and assign a rectangle to each tile
    for(int row = 0; row < layer.getHeight(); row++) {
        for(int col = 0; col < layer.getWidth(); col++) {

            debugRenderer.begin(ShapeType.Line);
            collisonRect = new Rectangle(row*32, col*32, 32, 32);
            debugRenderer.setColor(new Color(0, 1, 0, 1));
            debugRenderer.rect(collisonRect.getX(), collisonRect.getY(), collisonRect.width, collisonRect.height);
            debugRenderer.end();
            System.out.println("new Rectangle");
        }
    }

}

处理碰撞的代码

Rectangle playerRect = new Rectangle(player.position.x, player.position.y, 32, 32);
    debugRenderer.setColor(new Color(0, 1, 0, 1));
    debugRenderer.rect(player.position.x, player.position.y, playerRect.width, playerRect.height);
    debugRenderer.end();


    if(playerRect.overlaps(collisonRect)){
        player.position.x = player.prePosition.x;
        player.position.y = player.prePosition.y;
    }

Answer 1

大家好抱歉我的英文，希望本指南你，最终变量被阻止，重命名你在tilesSet中的字符串图层模式，点击按钮右边的propiedes，属性赞助人，名字字符串你的被阻止的名字，必须是等于最终变量。

public class pruebasActor extends Sprite{

TiledMapTileLayer collisionLayer;
Rectangle rectangle;

//tu string en las propiedades del tilesmap
//your string in the properties of tilesmap
private final String BLOCKEDKEY = "blockedKey";

private float yourIncrementW;
private float yourIncrementH;


pruebasActor(TiledMapTileLayer collisionLayer){
    //YOUR OTHER CODE ETC
    this.collisionLayer = collisionLayer;
    rectangle = new Rectangle(getX(), getY(), getWidth(), getHeight());

    yourIncrementW = collisionLayer.getTileWidth();
    yourIncrementH = collisionLayer.getTileHeight();
}
//YOUR OTHER CODE UPDATE DRAW MOVEMET

检查此单元格或已解锁

private boolean isCellBlocked(float x, float y) {

    Cell celda = collisionLayer.getCell((int) (x / collisionLayer.getTileWidth()), (int) (y / collisionLayer.getTileHeight()));

    return celda != null && celda.getTile() 
                 != null && celda.getTile().getProperties().containsKey(BLOCKEDKEY);
}

检查是否与右侧碰撞

public boolean collidesRight() {

for(float step = 0; step <= getHeight(); step += yourIncrementH){

    if(isCellBlocked(getX() + getWidth(), getY() + step)){
        Gdx.app.log("collidesRight", "X"+ getX() + getWidth()+"Y"+getY() + step);
        return true;
    }
}       
return false;
}

检查是否与左侧碰撞

public boolean collidesLeft() {

for(float step = 0; step <= getHeight(); step += yourIncrementH)
    if(isCellBlocked(getX(), getY() + step)){
        Gdx.app.log("collidesRight", "X"+ getX()+"Y"+ getY() + step);
        return true;
    }
return false;
}

检查是否与Top

发生碰撞

public boolean collidesTop() {

for(float step = 0; step <= getWidth(); step += yourIncrementW)
    if(isCellBlocked(getX() + step, getY() + getHeight())){
        Gdx.app.log("collidesTop", "X"+getX() + step+"Y"+getY() + getHeight());
        return true;
    }
return false;

}

检查是否与Bottom碰撞

public boolean collidesBottom() {

for(float step = 0; step <= getWidth(); step += yourIncrementW)
    if(isCellBlocked(getX() + step, getY())){
        Gdx.app.log("collidesBottom", "X"+getX() + step+"Y"+getY());
        return true;
    }
return false;
}

}

enter image description here

现在使用上述方法，您可以调用以确定播放器的行为。例如，在玩家的更新方法中，创建玩家在Y轴上移动的重力，直到碰撞为止，希望已经解释过。

libgdx在tilesmap tiles上绘制矩形 - 碰撞检测

1 个答案: