完善并添加README.md
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package com.yaohun.petsystem.util.wolf;
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import com.yaohun.petsystem.PetMain;
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import com.yaohun.petsystem.model.PetNbt;
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import net.minecraft.server.level.ServerLevel;
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import net.minecraft.world.damagesource.DamageSource;
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import net.minecraft.world.entity.Entity;
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import net.minecraft.world.entity.EntityType;
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import net.minecraft.world.entity.animal.wolf.Wolf;
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import net.minecraft.world.level.Level;
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import net.minecraft.world.phys.Vec3;
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import org.bukkit.Bukkit;
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import org.bukkit.Location;
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import org.bukkit.attribute.Attribute;
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import org.bukkit.attribute.AttributeInstance;
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import org.bukkit.block.Block;
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import org.bukkit.craftbukkit.CraftWorld;
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import org.bukkit.craftbukkit.entity.CraftPlayer;
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import org.bukkit.entity.LivingEntity;
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import org.bukkit.entity.Player;
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import org.bukkit.entity.Wolf;
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import org.bukkit.scheduler.BukkitRunnable;
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import java.util.UUID;
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/**
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* 自定义的狼实体类，用于实现“跟随玩家”的宠物功能。
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* 继承原版 NMS Wolf 实体，通过 tick() 方法控制移动与传送。
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*/
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public class CustomWolf extends Wolf {
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public class CustomWolf {
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private static final double STOP_DISTANCE_SQ = 9.0D;
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private static final double TELEPORT_DISTANCE_SQ = 144.0D;
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private static final double LOOK_DISTANCE_SQ = 256.0D;
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private static final double FOLLOW_SPEED = 1.2D;
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private static final double DEFAULT_MOVEMENT_SPEED = 0.4D;
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private static final int PATH_RECALC_TICKS = 10;
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private static final long FOLLOW_INTERVAL_TICKS = 10L;
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private final UUID ownerUuid;
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private final Wolf wolf;
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private int timeToRecalcPath = 0;
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/**
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* 构造方法：初始化宠物实体
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*
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* @param world NMS 世界对象
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* @param owner 宠物主人（Bukkit Player）
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*/
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public CustomWolf(Level world, Player owner) {
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super(EntityType.WOLF, world);
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this.ownerUuid = owner.getUniqueId();
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private CustomWolf(UUID ownerUuid, Wolf wolf) {
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this.ownerUuid = ownerUuid;
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this.wolf = wolf;
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startFollowTask();
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}
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/**
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* 每 tick 执行的逻辑，控制宠物的移动与状态
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*/
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@Override
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public void tick() {
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super.tick();
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public Wolf getBukkitEntity() {
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return wolf;
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}
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Player owner = Bukkit.getPlayer(ownerUuid);
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if (owner == null || !owner.isOnline()) {
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this.discard();
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return;
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}
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if (owner.isDead()) {
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this.getNavigation().stop();
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return;
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}
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if (!owner.getWorld().equals(this.getBukkitEntity().getWorld())) {
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this.getNavigation().stop();
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teleportToOwnerLocation(owner);
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return;
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}
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public LivingEntity getBukkitLivingEntity() {
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return wolf;
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}
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net.minecraft.world.entity.player.Player nmsOwner = ((CraftPlayer) owner).getHandle();
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public UUID getUUID() {
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return wolf.getUniqueId();
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}
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double distanceSq = this.distanceToSqr(nmsOwner);
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public boolean isRemoved() {
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return !wolf.isValid();
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}
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if (distanceSq < STOP_DISTANCE_SQ) {
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this.getNavigation().stop();
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return;
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}
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public static CustomWolf spawnCustomWolf(Player owner, PetNbt petNbt) {
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Wolf wolf = owner.getWorld().spawn(owner.getLocation(), Wolf.class, entity -> {
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entity.setSilent(true);
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entity.setTamed(true);
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entity.setOwner(owner);
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entity.setSitting(false);
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entity.setRemoveWhenFarAway(false);
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boolean shouldTeleport = distanceSq > TELEPORT_DISTANCE_SQ;
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double maxHealth = Math.max(1.0D, petNbt.maxHealth);
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double health = Math.max(1.0D, Math.min(petNbt.health, maxHealth));
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double damage = Math.max(0.0D, petNbt.damage);
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if (!shouldTeleport && distanceSq <= LOOK_DISTANCE_SQ) {
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this.getLookControl().setLookAt(nmsOwner, 10.0F, this.getMaxHeadXRot());
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}
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setAttribute(entity, Attribute.MAX_HEALTH, maxHealth);
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setAttribute(entity, Attribute.MOVEMENT_SPEED, DEFAULT_MOVEMENT_SPEED);
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setAttribute(entity, Attribute.ATTACK_DAMAGE, damage);
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entity.setHealth(health);
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});
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return new CustomWolf(owner.getUniqueId(), wolf);
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}
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if (--this.timeToRecalcPath <= 0) {
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this.timeToRecalcPath = PATH_RECALC_TICKS;
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if (shouldTeleport) {
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if (!tryTeleportNearOwner(nmsOwner)) {
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this.getNavigation().moveTo(nmsOwner, FOLLOW_SPEED);
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private void startFollowTask() {
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new BukkitRunnable() {
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@Override
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public void run() {
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if (!wolf.isValid() || wolf.isDead()) {
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cancel();
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return;
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}
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Player owner = Bukkit.getPlayer(ownerUuid);
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if (owner == null || !owner.isOnline()) {
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wolf.remove();
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cancel();
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return;
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}
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if (owner.isDead()) {
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wolf.setTarget(null);
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return;
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}
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if (!owner.getWorld().equals(wolf.getWorld())) {
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teleportToOwner(owner);
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return;
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}
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double distanceSq = wolf.getLocation().distanceSquared(owner.getLocation());
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if (distanceSq < STOP_DISTANCE_SQ) {
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wolf.setTarget(null);
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return;
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}
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if (distanceSq > TELEPORT_DISTANCE_SQ) {
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teleportToOwner(owner);
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}
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} else {
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this.getNavigation().moveTo(nmsOwner, FOLLOW_SPEED);
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}
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}
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}.runTaskTimer(PetMain.inst(), FOLLOW_INTERVAL_TICKS, FOLLOW_INTERVAL_TICKS);
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}
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/**
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* 当宠物距离主人太远时，尝试在主人周围随机传送
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*
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* @param nmsOwner 主人 NMS 实体
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*/
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private boolean tryTeleportNearOwner(Entity nmsOwner) {
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Vec3 pos = nmsOwner.position();
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for (int i = 0; i < 10; i++) {
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int x = (int) Math.floor(pos.x) + (random.nextInt(7) - 3);
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int y = (int) Math.floor(pos.y);
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int z = (int) Math.floor(pos.z) + (random.nextInt(7) - 3);
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Location location = new Location(getBukkitEntity().getWorld(), x + 0.5D, y, z + 0.5D);
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if (isSafeTeleportLocation(location)) {
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this.teleportTo(location.getX(), location.getY(), location.getZ());
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this.getNavigation().stop();
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return true;
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}
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}
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return false;
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}
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private void teleportToOwnerLocation(Player owner) {
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private void teleportToOwner(Player owner) {
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Location location = owner.getLocation();
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if (isSafeTeleportLocation(location)) {
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this.getBukkitEntity().teleport(location);
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wolf.teleport(location);
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}
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}
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@@ -132,65 +112,7 @@ public class CustomWolf extends Wolf {
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Block feet = location.getBlock();
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Block head = feet.getRelative(0, 1, 0);
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Block ground = feet.getRelative(0, -1, 0);
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if (!feet.isPassable() || !head.isPassable() || !ground.getType().isSolid()) {
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return false;
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}
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if (!location.getWorld().equals(getBukkitEntity().getWorld())) {
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return true;
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}
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return this.level().noCollision(this, this.getBoundingBox().move(
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location.getX() - this.getX(),
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location.getY() - this.getY(),
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location.getZ() - this.getZ()
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));
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}
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/**
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* 重写受伤方法，防止主人伤害到自己的宠物
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*
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* @param source 伤害来源
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* @param amount 伤害数值
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* @return 是否成功造成伤害
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*/
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@Override
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public boolean hurtServer(ServerLevel level, DamageSource source, float amount) {
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Entity entity = source.getEntity();
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if (entity != null && entity.getUUID().equals(ownerUuid)) {
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return false;
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}
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return super.hurtServer(level, source, amount);
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}
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/**
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* 静态方法：用于在 Bukkit 世界中生成并注册一只 CustomWolf
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*
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* @param owner 宠物主人
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* @return 新生成的 CustomWolf 实例
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*/
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public static CustomWolf spawnCustomWolf(Player owner, PetNbt petNbt) {
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CraftWorld world = (CraftWorld) owner.getWorld();
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Level nmsWorld = world.getHandle();
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CustomWolf wolf = new CustomWolf(nmsWorld, owner);
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wolf.setSilent(true);
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wolf.setOrderedToSit(false);
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wolf.setPos(owner.getLocation().getX(), owner.getLocation().getY(), owner.getLocation().getZ());
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LivingEntity livingEntity = wolf.getBukkitLivingEntity();
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double maxHealth = Math.max(1.0D, petNbt.maxHealth);
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double health = Math.max(1.0D, Math.min(petNbt.health, maxHealth));
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double damage = Math.max(0.0D, petNbt.damage);
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setAttribute(livingEntity, Attribute.MAX_HEALTH, maxHealth);
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setAttribute(livingEntity, Attribute.MOVEMENT_SPEED, DEFAULT_MOVEMENT_SPEED);
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setAttribute(livingEntity, Attribute.ATTACK_DAMAGE, damage);
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livingEntity.setHealth(health);
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nmsWorld.addFreshEntity(wolf);
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return wolf;
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return feet.isPassable() && head.isPassable() && ground.getType().isSolid();
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}
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private static void setAttribute(LivingEntity entity, Attribute attribute, double value) {
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