TargetLocation.java

package me.evyatar.target;

import org.bukkit.Location;
import org.bukkit.entity.Player;

public class TargetLocationCalculator
{

	public static Location getRelativeLocation(Location from, double xzAngle, double yAngle, double distance)
	{
		xzAngle = Math.toRadians(xzAngle);
		yAngle = Math.toRadians(yAngle);

		double y = Math.sin(yAngle)*distance;

		double xzDistance = Math.cos(yAngle)*distance;
		double x = Math.cos(xzAngle)*xzDistance,
			   z = Math.sin(xzAngle)*xzDistance;

		return from.clone().add(x, y, z);
	}

	public Location getTargetLocation(Player player, double distance)
	{
		Location playerLoc = player.getLocation();

		double xzAngle = playerLoc.getPitch() + 90D,
			   yAngle  = playerLoc.getYaw()*-1;

		return getRelativeLocation(playerLoc, xzAngle, yAngle, distance);
	}
}