75 Zeilen
3.0 KiB
Java
75 Zeilen
3.0 KiB
Java
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/*
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* This file is a part of the SteamWar software.
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*
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* Copyright (C) 2022 SteamWar.de-Serverteam
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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package de.steamwar.bausystem.utils;
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import lombok.experimental.UtilityClass;
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import org.bukkit.FluidCollisionMode;
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import org.bukkit.GameMode;
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import org.bukkit.Location;
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import org.bukkit.entity.Entity;
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import org.bukkit.entity.Player;
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import org.bukkit.util.BoundingBox;
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import org.bukkit.util.RayTraceResult;
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import org.bukkit.util.Vector;
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import java.util.List;
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@UtilityClass
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public class RayTraceUtils {
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public static RayTraceResult trace(Player player, Location to, List<Entity> entityList) {
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if (player.getGameMode() == GameMode.SPECTATOR) {
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return null;
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}
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Location startPos = to.clone().add(0.0, player.getEyeHeight(), 0.0);
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Vector direction = to.getDirection();
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RayTraceResult blocks = player.getWorld().rayTraceBlocks(startPos, direction, 10.0, FluidCollisionMode.NEVER, true);
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Entity nearestHitEntity = null;
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RayTraceResult nearestHitResult = null;
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double nearestDistanceSq = Double.MAX_VALUE;
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for (Entity entity : entityList) {
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BoundingBox boundingBox = entity.getBoundingBox();
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RayTraceResult hitResult = boundingBox.rayTrace(startPos.toVector(), direction, 10.0);
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if (hitResult != null) {
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double distanceSq = startPos.toVector().distanceSquared(hitResult.getHitPosition());
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if (distanceSq < nearestDistanceSq) {
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nearestHitEntity = entity;
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nearestHitResult = hitResult;
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nearestDistanceSq = distanceSq;
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}
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}
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}
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RayTraceResult entities = nearestHitEntity == null ? null : new RayTraceResult(nearestHitResult.getHitPosition(), nearestHitEntity, nearestHitResult.getHitBlockFace());
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if (blocks == null) {
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return entities;
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} else if (entities == null) {
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return blocks;
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} else {
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Vector startVec = startPos.toVector();
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double blockHitDistance = startVec.distance(blocks.getHitPosition());
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double entityHitDistanceSquared = startVec.distanceSquared(entities.getHitPosition());
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return entityHitDistanceSquared < blockHitDistance * blockHitDistance ? entities : blocks;
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}
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}
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}
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