Bosses plugin

Discussion in 'Plugin Development' started by Limbo, Jun 14, 2022.

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  1. Offline

    Limbo

    Hello, I'm trying to create a plugin with bosses on my server, everything is ready, there are no errors, but when I run it, I get the following error:

    at ru.zubastik.mobs.Spawner$SpawnerUtils.init(Spawner.java:115) ~[?:?]
    at ru.zubastik.main.Mobs.onEnable(Mobs.java:27) ~[?:?]
    Caused by: java.lang.NullPointerException: Cannot invoke "[Lru.zubastik.mobs.Cus
    tomTypes;.clone()" because "ru.zubastik.mobs.CustomTypes.$VALUES" is null
    at ru.zubastik.mobs.CustomTypes.values(CustomTypes.java:16) ~[?:?]
    at ru.zubastik.mobs.CustomTypes.<init>(CustomTypes.java:29) ~[?:?]
    at ru.zubastik.mobs.CustomTypes.<clinit>(CustomTypes.java:18) ~[?:?]

    My code:

    Code:
    package ru.zubastik.mobs;

import net.minecraft.server.v1_16_R3.Entity;
import net.minecraft.server.v1_16_R3.EntityTypes;
import org.bukkit.Location;
import org.bukkit.craftbukkit.v1_16_R3.CraftWorld;
import org.bukkit.event.entity.CreatureSpawnEvent;
import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;

enum CustomTypes {

    DARKWITCH("PrisonDarkWitch", 66, (Class)CustomWitch.class);

    private static Map<Integer, UUID> assoc;
    String name;
    int id;
    Class<? extends Entity> custom;
    static {assoc = new HashMap<>();}

    CustomTypes(String name, int id, Class<? extends Entity> custom) {
        this.name = name;
        this.id = id;
        addToMaps(this.custom = custom, name, id);
    }

    public static void spawnEntity(CustomTypes entityType, Location location, Spawner spawner) {
        try {
            Entity entity = entityType.getEntityClass().getConstructor(new Class[] { Spawner.class }).newInstance(new Object[] { spawner });
            entity.setLocation(location.getX(), location.getY(), location.getZ(), location.getYaw(), location.getPitch());
            ((CraftWorld)location.getWorld()).getHandle().addEntity(entity, CreatureSpawnEvent.SpawnReason.CUSTOM);
        } catch (InstantiationException|IllegalAccessException|IllegalArgumentException|java.lang.reflect.InvocationTargetException|NoSuchMethodException|SecurityException ex7) {
            ex7.printStackTrace();
        }
    }

    public static Object getPrivateField(String fieldName, Class<EntityTypes> clazz, Object object) {
        Object o = null;
        try {
            Field field = clazz.getDeclaredField(fieldName);
            field.setAccessible(true);
            o = field.get(object);
        } catch (NoSuchFieldException|IllegalAccessException ex5) {
            ex5.printStackTrace();
        }
        return o;
    }

    static void addToMaps(Class<?> clazz, String name, int id) {
        ((Map<String, Class<?>>)getPrivateField("c", EntityTypes.class, null)).put(name, clazz);
        ((Map<Class<?>, String>)getPrivateField("d", EntityTypes.class, null)).put(clazz, name);
        ((Map<Class<?>, Integer>)getPrivateField("f", EntityTypes.class, null)).put(clazz, Integer.valueOf(id));
    }

    public String getName() {
        return this.name;
    }

    public Integer getID() {
        return Integer.valueOf(this.id);
    }

    public Class<? extends Entity> getEntityClass() {
        return this.custom;
    }

    public static void associate(Entity entity, Spawner spawner) {
        assoc.put(Integer.valueOf(entity.hashCode()), spawner.getUUID());
    }

    public static Spawner getSpawnerByEntity(Entity entity) {
        return Spawner.spawners.get(assoc.get(Integer.valueOf(entity.hashCode())));
    }

}
    HELP PLEASE I WILL HAVE TO!

    THANKS IN ADVANCE!!!
     
    Limbo, Jun 14, 2022
    #1
  2. Offline

    timtower Administrator Administrator Moderator

    @Limbo Why does this look like a decompiled class?
    And need those other classes as well in that stacktrace.
     
    timtower, Jun 14, 2022
    #2
  3. Offline

    Limbo

    Here are the other classes:

    Code:
    package ru.zubastik.mobs;

import net.minecraft.server.v1_16_R3.Entity;
import org.bukkit.Bukkit;
import org.bukkit.Location;
import org.bukkit.World;
import org.bukkit.configuration.ConfigurationSection;
import org.bukkit.scheduler.BukkitRunnable;
import ru.zubastik.main.Mobs;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;

public class Spawner {

    private static final Mobs plugin = Mobs.getPlugin(Mobs.class);
    public static Map<UUID, Spawner> spawners = new HashMap<>();
    Location location;
    CustomTypes type;
    Entity current;
    long deathTime;
    int interval;
    UUID uuid;

    public Spawner(Location location, CustomTypes type, int interval) {
        this.location = location;
        this.current = null;
        this.deathTime = -1L;
        this.uuid = UUID.randomUUID();
        this.type = type;
        this.interval = interval;
        spawners.put(this.uuid, this);
    }

    public Spawner(Location location, CustomTypes type) {
        this.location = location;
        this.current = null;
        this.deathTime = -1L;
        this.uuid = UUID.randomUUID();
        this.type = type;
        this.interval = -1;
        spawners.put(this.uuid, this);
    }

    public void spawn() {
        try {
            if (this.location != null && this.location.getChunk() != null && this.location.getChunk().isLoaded())
                CustomTypes.spawnEntity(this.type, this.location.clone().add(0.0D, 1.0D, 0.0D), this);
        } catch (NullPointerException nullPointerException) {}
    }

    public void dead() {
        this.current = null;
        this.deathTime = System.currentTimeMillis() / 1000L;
    }

    public Location getSpawnLocation() {
        return this.location;
    }

    public void update() {
        if (this.current == null) {
            if (System.currentTimeMillis() / 1000L - this.deathTime >= this.interval && this.interval > 0)
                spawn();
        } else if (this.current.getBukkitEntity().getLocation().distance(this.location) > 64.0D) {
            reset();
        }
    }

    public void register(Entity entity) {
        this.current = entity;
    }

    public void reset() {
        if (this.current != null) {
            if (this.current.passengers != null)
                this.current.passengers.remove(this.current.getBukkitEntity());
            this.current.getBukkitEntity().remove();
        }
        this.deathTime = -1L;
        spawn();
    }

    public UUID getUUID() {
        return this.uuid;
    }

    public Entity getCurrent() {
        return this.current;
    }

    public CustomTypes getType() {
        return this.type;
    }

    public static class SpawnerUtils {
        public static void init() {
            ConfigurationSection section = plugin.mobs.getConfig().getConfigurationSection("mobs");
            for (String currentSpawn : section.getKeys(false)) {
                ConfigurationSection path = section.getConfigurationSection(currentSpawn);
                Location loc = null;
                double x = 0.0D;
                double y = 0.0D;
                double z = 0.0D;
                try {
                    String[] locFull = path.getString("location").split(" ");
                    World world = Bukkit.getWorld(locFull[0]);
                    x = Double.valueOf(locFull[1]).doubleValue();
                    y = Double.valueOf(locFull[2]).doubleValue();
                    z = Double.valueOf(locFull[3]).doubleValue();
                    loc = new Location(world, x, y, z);
                } catch (NullPointerException|NumberFormatException ex7) {
                    ex7.printStackTrace();
                }
                CustomTypes type = CustomTypes.valueOf(path.getString("type").toUpperCase());
                int interval = path.getInt("interval");
                (new Spawner(
                        loc,
                        type,
                        interval))
                        .update();
            }
            Spawner.plugin.log("&aLoaded &6" + Spawner.spawners.size() + " &amob-spawners");
        }
    }

    public static class SpawnerUpdater extends BukkitRunnable {
        public void run() {
            for (Spawner cSpawner : Spawner.spawners.values())
                cSpawner.update();
        }
    }

}
    Code:
    package ru.zubastik.mobs;

import com.sk89q.worldguard.bukkit.WorldGuardPlugin;
import com.sk89q.worldguard.protection.managers.RegionManager;
import com.sk89q.worldguard.protection.regions.ProtectedRegion;
import net.minecraft.server.v1_16_R3.*;
import net.minecraft.server.v1_16_R3.EntityTypes;
import org.bukkit.Bukkit;
import org.bukkit.Effect;
import org.bukkit.GameMode;
import org.bukkit.craftbukkit.v1_16_R3.CraftWorld;
import org.bukkit.craftbukkit.v1_16_R3.entity.CraftEntity;
import org.bukkit.entity.EntityType;
import org.bukkit.entity.LivingEntity;
import org.bukkit.entity.Player;
import org.bukkit.event.entity.EntityDamageEvent;
import org.bukkit.event.entity.EntityRegainHealthEvent;
import org.bukkit.inventory.ItemStack;
import org.bukkit.potion.PotionEffect;
import org.bukkit.potion.PotionEffectType;
import org.bukkit.util.Vector;
import ru.zubastik.economy.AbstractEconomy;
import ru.zubastik.items.AbstractItems;
import ru.zubastik.main.Mobs;

import java.util.*;

public class CustomWitch extends EntityMonster {

    private static final Mobs plugin = Mobs.getPlugin(Mobs.class);
    private static final WorldGuardPlugin worldguard = plugin.getWorldGuard();
    int interval;
    IChatBaseComponent name;
    int health;
    double damage;
    double followRange;
    double knobackResistence;
    double speed;
    double money;
    int debuff;
    int toDebuff;
    Spawner spawner;
    CraftEntity bukkitEntity;
    HashMap<String, Integer> attackers;
    int totalDamage;
    int hpDelay;
    Random rnd;

    public CustomWitch(Spawner spawner) {
        super(EntityTypes.WITCH, ((CraftWorld)spawner.getSpawnLocation().getWorld()).getHandle());
        this.interval = 60;
        this.name = new ChatMessage("");
        this.health = 800;
        this.damage = 11.0D;
        this.followRange = 32.0D;
        this.knobackResistence = 2.147483647E9D;
        this.speed = 0.00925D;
        this.money = 4500.0D;
        this.debuff = 200;
        this.toDebuff = this.debuff;
        this.hpDelay = 20;
        this.rnd = new Random();
        ((LivingEntity)getBukkitEntity()).setRemoveWhenFarAway(false);
        ((LivingEntity)getBukkitEntity()).addPotionEffect(new PotionEffect(PotionEffectType.DAMAGE_RESISTANCE, 2147483647, 1), true);
        ((LivingEntity)getBukkitEntity()).addPotionEffect(new PotionEffect(PotionEffectType.INCREASE_DAMAGE, 2147483647, 2), true);
        getAttributeInstance(GenericAttributes.MAX_HEALTH).setValue(this.health);
        getAttributeInstance(GenericAttributes.FOLLOW_RANGE).setValue(this.followRange);
        getAttributeInstance(GenericAttributes.KNOCKBACK_RESISTANCE).setValue(this.knobackResistence);
        getAttributeInstance(GenericAttributes.MOVEMENT_SPEED).setValue(this.speed);
        getAttributeInstance(GenericAttributes.ATTACK_DAMAGE).setValue(this.damage);
        setHealth(this.health);
        this.goalSelector.a(8, new PathfinderGoalLookAtPlayer(this, EntityHuman.class, (float)this.followRange));
        this.goalSelector.a(5, new PathfinderGoalMoveTowardsRestriction(this, 10.0D));
        this.goalSelector.a(7, new PathfinderGoalRandomStroll(this, 1.0D));
        this.targetSelector.a(2, new PathfinderGoalNearestAttackableTarget(this, EntityHuman.class, true));
        this.targetSelector.a(1, new PathfinderGoalHurtByTarget(this, new Class[0]));
        this.goalSelector.a(8, new PathfinderGoalLookAtPlayer(this, EntityHuman.class, (float)(this.followRange / 2.0D)));
        this.goalSelector.a(2, new PathfinderGoalMeleeAttack(this, this.damage, true));
        (this.spawner = spawner).register(this);
        setCustomName(new ChatMessage(this.name.getText().replace("<3", String.format("%.2f", new Object[] { Float.valueOf(getHealth()) }))));
        setCustomNameVisible(true);
        this.canPickUpLoot = false;
        this.persistent = true;
        this.expToDrop = 0;
        this.bukkitEntity = getBukkitEntity();
        this.attackers = new HashMap<>();
        this.totalDamage = 0;
    }

    protected CustomWitch(EntityTypes<? extends EntityMonster> var0, World var1) {
        super(var0, var1);
    }

    public boolean damageEntity(DamageSource source, float a) {
        if ((this.passengers != null && source.getEntity() == this.passengers) || source == DamageSource.STUCK)
            return false;
        setCustomName(new ChatMessage(this.name.getText().replace("<3", String.format("%.2f", new Object[] { Float.valueOf(getHealth()) }))));
        if (this.passengers != null)
            return (source != DamageSource.projectile((Entity)this, (Entity) this.passengers) && ((Entity) this.passengers).damageEntity(source, a));
        Entity entity = source.getEntity();
        if (entity != null && entity.getBukkitEntity().getType() == EntityType.PLAYER) {
            Player pAttacker = (Player)entity.getBukkitEntity();
            if (!this.attackers.containsKey(pAttacker.getName())) {
                this.attackers.put(pAttacker.getName(), Integer.valueOf((int)a));
            } else {
                this.attackers.put(pAttacker.getName(), Integer.valueOf((int)(((Integer)this.attackers.get(pAttacker.getName())).intValue() + a)));
            }
            this.totalDamage += (int)a;
        }
        if ((new Random()).nextFloat() < 0.1D)
            for (org.bukkit.entity.Entity e : getBukkitEntity().getNearbyEntities(15.0D, 5.0D, 15.0D)) {
                if (e.getType() == EntityType.PLAYER) {
                    LivingEntity ent = (LivingEntity)e;
                    ent.addPotionEffect(new PotionEffect(PotionEffectType.POISON, 500, 0), true);
                    ent.addPotionEffect(new PotionEffect(PotionEffectType.BLINDNESS, 150, 255, true));
                    ent.addPotionEffect(new PotionEffect(PotionEffectType.SLOW, 200, 255, true, false));
                    ent.getLocation().getWorld().playEffect(ent.getLocation(), Effect.ENDEREYE_LAUNCH, 1);
                    ent.sendMessage("");
                }
            }
        if ((new Random()).nextFloat() < 0.07D)
            for (org.bukkit.entity.Entity e : getBukkitEntity().getNearbyEntities(15.0D, 10.0D, 15.0D)) {
                if (e instanceof Player) {
                    Player p = (Player)e;
                    p.sendMessage("");
                    org.bukkit.inventory.ItemStack i1 = p.getInventory().getItem(0);
                    org.bukkit.inventory.ItemStack i2 = p.getInventory().getItem(1);
                    org.bukkit.inventory.ItemStack i3 = p.getInventory().getItem(2);
                    org.bukkit.inventory.ItemStack i4 = p.getInventory().getItem(3);
                    org.bukkit.inventory.ItemStack i5 = p.getInventory().getItem(4);
                    org.bukkit.inventory.ItemStack i6 = p.getInventory().getItem(5);
                    org.bukkit.inventory.ItemStack i7 = p.getInventory().getItem(6);
                    org.bukkit.inventory.ItemStack i8 = p.getInventory().getItem(7);
                    org.bukkit.inventory.ItemStack i9 = p.getInventory().getItem(8);
                    org.bukkit.inventory.ItemStack i10 = p.getInventory().getItem(9);
                    p.getInventory().setItem(0, i5);
                    p.getInventory().setItem(1, i7);
                    p.getInventory().setItem(2, i10);
                    p.getInventory().setItem(3, i8);
                    p.getInventory().setItem(4, i1);
                    p.getInventory().setItem(5, i2);
                    p.getInventory().setItem(6, i3);
                    p.getInventory().setItem(7, i6);
                    p.getInventory().setItem(8, i4);
                    p.getInventory().setItem(9, i9);
                }
            }
        if ((new Random()).nextFloat() < 0.1D)
            for (org.bukkit.entity.Entity e : getBukkitEntity().getNearbyEntities(15.0D, 5.0D, 15.0D)) {
                if (e.getType() == EntityType.PLAYER) {
                    LivingEntity ent = (LivingEntity)e;
                    ent.setVelocity((new Vector(0.0D, 1.075D, 0.0D)).multiply(1));
                    ent.getLocation().getWorld().playEffect(ent.getLocation(), Effect.ENDER_SIGNAL, 1);
                    ent.sendMessage("");
                }
            }
        return super.damageEntity(source, a);
    }

    public void die() {
        if (this.spawner != null)
            this.spawner.dead();
        if (this.killer != null) {
            Bukkit.broadcastMessage("");
                    HashMap<String, Double> percents = plugin.calculatePercents(this.attackers, this.totalDamage);
            for (String key : percents.keySet()) {
                Player pp = Bukkit.getPlayer(key);
                Double money = Double.valueOf(((Double)percents.get(key)).doubleValue() * this.money);
                if (money.doubleValue() < 0.0D)
                    money = Double.valueOf(0.0D);
                if (pp != null) {
                    AbstractEconomy.addBalance(pp, money.doubleValue());
                }
                if (Bukkit.getPlayer(key) != null)
                    Bukkit.getPlayer(key).sendMessage("".replace("%money%", String.format("%.2f", new Object[] { money })));
            }
            ItemStack star = AbstractItems.getItem("star");
            star.setAmount((new Random()).nextInt(15) + 10);
            getBukkitEntity().getLocation().getWorld().dropItem(this.bukkitEntity.getLocation(), star);
        }
        super.die();
    }

    public String getName() {
        return this.name.getText().replace("<3", String.format("%.2f", new Object[] { Float.valueOf(getHealth()) }));
    }

}
    Just adding a name and id to the map does not work for me. I used to make the same plugin for version 1.8, but already on version 1.16 there were problems

    EDIT by Moderator: merged posts, please use the edit button instead of double posting.
     
    Last edited by a moderator: Jul 22, 2022
    Limbo, Jun 14, 2022
    #3
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