Custom entity zombie pet

src/main/java/me/night/nullvalkyrie/commands/BetaCommand.java

@@ -1,8 +1,8 @@
 package me.night.nullvalkyrie.commands;
 
-//import me.night.nullvalkyrie.entities.pets.ZombiePet;
+import me.night.nullvalkyrie.entities.pets.ZombiePet;
 import org.bukkit.command.CommandSender;
-import org.bukkit.craftbukkit.v1_19_R1.CraftWorld;
+import org.bukkit.craftbukkit.v1_19_R2.CraftWorld;
 import org.bukkit.entity.Player;
 
 import java.util.List;
@@ -16,8 +16,8 @@ public class BetaCommand extends Command {
     @Override
     public void onCommand(CommandSender sender, String[] args) {
         if (sender instanceof Player player) {
-            //ZombiePet a = new ZombiePet(player.getLocation(), player);
+            ZombiePet a = new ZombiePet(player.getLocation(), player);
-            //((CraftWorld) player.getWorld()).getHandle().b(a);
+            ((CraftWorld) player.getWorld()).getHandle().addFreshEntity(a);
         }
 
     }

src/main/java/me/night/nullvalkyrie/entities/pets/PathFinderGoalPet.java

@@ -0,0 +1,60 @@
+package me.night.nullvalkyrie.entities.pets;
+
+import java.util.EnumSet;
+
+import net.minecraft.world.entity.*;
+import net.minecraft.world.entity.ai.goal.Goal;
+
+public class PathFinderGoalPet extends Goal {
+
+    private final Mob pet; // our pet
+    private LivingEntity owner; // owner
+
+    private final double f; // pet's speed
+    private final float g; // distance between owner & pet
+
+    private double c; // x
+    private double d; // y
+    private double e; // z
+
+
+    public PathFinderGoalPet(Mob mob, double speed, float distance) {
+        this.pet = mob;
+        this.f = speed;
+        this.g = distance;
+        this.setFlags(EnumSet.of(Flag.MOVE, Flag.LOOK, Flag.TARGET, Flag.JUMP));
+    }
+
+    @Override
+    public boolean canUse() {
+        this.owner = this.pet.getTarget();
+        if (this.owner == null) return false;
+        else if (this.pet.getDisplayName() == null) return false;
+        else if (!this.pet.getDisplayName().getString().contains(this.owner.getName().getString())) return false;
+        else if (this.owner.distanceToSqr(this.pet) > (double) (this.g * this.g)) {
+            pet.getBukkitEntity().teleport(this.owner.getBukkitEntity().getLocation());
+            return false;
+        } else {
+            this.c = this.owner.getX();
+            this.d = this.owner.getY();
+            this.e = this.owner.getZ();
+            return true;
+        }
+    }
+
+    @Override
+    public void start() {
+        this.pet.getNavigation().moveTo(this.c, this.d, this.e, this.f);
+    }
+
+    @Override
+    public boolean canContinueToUse() {
+        return !this.pet.getNavigation().isDone() && this.owner.distanceToSqr(this.pet) < (double) (this.g * this.g);
+    }
+
+    @Override
+    public void stop() {
+        this.owner = null;
+    }
+
+}

src/main/java/me/night/nullvalkyrie/entities/pets/ZombiePet.java

@@ -0,0 +1,31 @@
+package me.night.nullvalkyrie.entities.pets;
+
+import net.md_5.bungee.api.ChatColor;
+import net.minecraft.network.chat.Component;
+import net.minecraft.world.entity.EntityType;
+import net.minecraft.world.entity.ai.goal.FloatGoal;
+import net.minecraft.world.entity.ai.goal.LookAtPlayerGoal;
+import net.minecraft.world.entity.monster.Zombie;
+import org.bukkit.Location;
+import org.bukkit.craftbukkit.v1_19_R2.CraftWorld;
+import org.bukkit.craftbukkit.v1_19_R2.entity.CraftPlayer;
+import org.bukkit.entity.Player;
+import org.bukkit.event.entity.EntityTargetEvent;
+
+public class ZombiePet extends Zombie {
+    public ZombiePet(Location location, Player player) {
+        super(EntityType.ZOMBIE, ((CraftWorld) location.getWorld()).getHandle());
+        this.setBaby(true); // https://nms.screamingsandals.org/1.19.2/net/minecraft/world/entity/monster/Zombie.html setBaby
+        this.setInvulnerable(true);
+        this.setPos(location.getX(), location.getY(), location.getZ()); // https://nms.screamingsandals.org/1.19.2/net/minecraft/world/entity/Entity.html setPos
+        this.setCustomName(Component.nullToEmpty(ChatColor.DARK_PURPLE + player.getName() + "'s Zombie")); //https://nms.screamingsandals.org/1.19.2/net/minecraft/world/entity/Entity.html setCustomName
+        this.setCustomNameVisible(true); // https://nms.screamingsandals.org/1.19.2/net/minecraft/world/entity/Entity.html setCustomNameVisible
+        this.setTarget(((CraftPlayer) player).getHandle(), EntityTargetEvent.TargetReason.CUSTOM, true); // https://nms.screamingsandals.org/1.19.2/net/minecraft/world/entity/monster/Zombie.html setGoalTarget
+    }
+    @Override
+    public void registerGoals() {
+        this.goalSelector.addGoal(0, new PathFinderGoalPet(this, 1.0D, 15F));
+        this.goalSelector.addGoal(1, new FloatGoal(this));
+        this.goalSelector.addGoal(2, new LookAtPlayerGoal(this, net.minecraft.world.entity.player.Player.class, 8.0F));
+    }
+}