Question

我正在制作一个Minecraft风格的游戏，3D阵列块分为块。但后来我需要检查一下哪个块玩家指向进行世界修改。这就是我到目前为止所提出的：

    private Block getBlockLookedAt(EntityPlayer ep) {


        double px = ep.getPosition().x;
        double py = ep.getPosition().y;
        double pz = ep.getPosition().z;

        float pPitch = ep.getPitch()*-1;
        float pYaw = ep.getYaw()*-1;

        double searchRadius = 6;

        double targetX = searchRadius * Math.cos(Math.toRadians(pYaw))*Math.sin(Math.toRadians(pPitch));
        double targetY = searchRadius * Math.sin(Math.toRadians(pYaw))*Math.sin(Math.toRadians(pPitch));
        double targetZ = searchRadius * Math.cos(Math.toRadians(pPitch));
        //System.out.println("=");
        //System.out.println(px + "," + py + "," + pz);
        //System.out.println(targetX + "," + targetY + "," + targetZ);
        //System.out.println("=");
        for(double i = 0; i<searchRadius; i+=0.01){
            targetX = i * Math.cos(Math.toRadians(pYaw))*Math.sin(Math.toRadians(pPitch));
            targetY = i * Math.sin(Math.toRadians(pYaw))*Math.sin(Math.toRadians(pPitch));
            targetZ = i * Math.cos(Math.toRadians(pPitch));
            int bx = (int)Math.ceil(targetX+px);
            int by = (int)Math.ceil((targetY*-1)+py);
            int bz = (int)Math.ceil(targetZ+pz);
            System.out.println(bx + "," + by + "," + bz + "," + getBlock(bx,by,bz).getID());
            if(getBlock(bx,by,bz).getID()!=0)return getBlock(bx,by,bz);
        }



        return Block.air;
    }

我在这里做的是使用球面坐标，并在检查半径上加0.01，以检查是否存在与范围内的空气不同的块。虽然这似乎不起作用（它总是返回空气，我需要在块内部，以便检测其他块）任何人都有解决方案，或者更好的方法吗？

PS。我已经阅读了schabby的教程，据我所知，它没有检查Z轴，所以这不是我想要的。

Answer 1

double searchRadius = 0;
...
for(double i = 0; i<searchRadius; i+=0.01){
    ...
}
return Block.air;

尝试大于零的searchRadius。

LWJGL中的3D拾取

1 个答案: