121 lines
4.2 KiB
Java
121 lines
4.2 KiB
Java
/*
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* Super Lead rope mod
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* Copyright (C) 2025 R3944Realms
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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 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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* 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 General Public License for more details.
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* You should have received a copy of the GNU 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 top.r3944realms.superleadrope.util.riding;
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import net.minecraft.server.level.ServerPlayer;
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import net.minecraft.world.entity.Entity;
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import net.minecraft.world.entity.ai.goal.Goal;
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import net.minecraft.world.entity.animal.Animal;
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import net.minecraft.world.phys.Vec3;
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import org.jetbrains.annotations.Nullable;
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import top.r3944realms.superleadrope.CommonEventHandler;
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import top.r3944realms.superleadrope.network.NetworkHandler;
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import top.r3944realms.superleadrope.network.toClient.UpdatePlayerMovementPacket;
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public class RindingLeash {
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/**
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* 获取乘坐链中第一个在白名单的载具，如果没有则返回null
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*/
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@Nullable
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public static Entity getSafeWhitelistRoot(Entity entity) {
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if (entity == null) return null;
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Entity root = RidingFinder.findRootVehicle(entity);
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if (root == null) return null;
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Entity current = root;
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while (current != null) {
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if (CommonEventHandler.leashConfigManager.isEntityTeleportAllowed(current.getType())) {
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return current; // 找到白名单载具
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}
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current = current.getVehicle();
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}
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return null; // 整条链条没有白名单载具
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}
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/**
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* 获取最终可作用的载具，用于拴绳合力应用。
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* 当链条中没有白名单载具时解除骑乘并返回自身
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* 仅在拴绳合力不为零时调用
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*/
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public static Entity getFinalEntityForLeashIfForce(Entity entity, boolean hasForce) {
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if (!hasForce || entity == null) {
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return entity; // 没有力时，直接返回原实体，不做处理
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}
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Entity root = RidingFinder.findRootVehicle(entity);
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if (root == null) return entity;
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Entity current = root;
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while (current != null) {
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if (CommonEventHandler.leashConfigManager.isEntityTeleportAllowed(current.getType())) {
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return current; // 找到白名单载具
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}
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current = current.getVehicle();
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}
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// 没有白名单载具，解除骑乘
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RidingDismounts.dismountRootEntity(entity);
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return entity; // 返回自身作为最终应用对象
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}
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/**
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* 给动物应用拴绳力前的移动控制保护
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*/
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public static void protectAnimalMovement(Entity entity, boolean hasLeash) {
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if (entity instanceof Animal mob) {
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if (hasLeash) {
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mob.goalSelector.disableControlFlag(Goal.Flag.MOVE);
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entity.resetFallDistance();
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} else {
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mob.goalSelector.enableControlFlag(Goal.Flag.MOVE);
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}
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}
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}
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/**
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* 给玩家应用拴绳力前的发包处理
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*/
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public static void applyForceToPlayer(ServerPlayer player, Vec3 leashVec, double k, double dampingFactor, double maxForce) {
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Vec3 velocity = player.getDeltaMovement();
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// 弹簧力
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Vec3 springForce = leashVec.scale(k);
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// 阻尼力
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Vec3 dampingForce = velocity.scale(-dampingFactor);
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// 合力
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Vec3 finalForce = springForce.add(dampingForce);
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// 限幅
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if (finalForce.length() > maxForce) {
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finalForce = finalForce.normalize().scale(maxForce);
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}
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// 发包应用给玩家
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NetworkHandler.sendToPlayer(
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new UpdatePlayerMovementPacket(
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UpdatePlayerMovementPacket.Operation.ADD,
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finalForce
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), player
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);
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}
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}
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