Question I want to customize a Creeper

[yangood]

I hope to customize the explosion effect of Creepers, but I wonder if my implementation method is too clumsy. Is there any way to customize a Creeper and replace the original Creeper spawn?
Sorry, my English is not very good!

import java.util.Collection;
import net.minecraft.world.effect.MobEffectInstance;
import net.minecraft.world.entity.AreaEffectCloud;
import net.minecraft.world.entity.monster.Creeper;
import net.minecraft.world.level.Level;
import net.minecraft.world.level.Level.ExplosionInteraction;
import org.bukkit.craftbukkit.v1_20_R1.entity.CraftCreeper;
import org.bukkit.entity.Entity;
import org.bukkit.event.EventHandler;
import org.bukkit.event.EventPriority;
import org.bukkit.event.Listener;
import org.bukkit.event.entity.CreatureSpawnEvent;
import org.bukkit.event.entity.ExplosionPrimeEvent;
import org.jetbrains.annotations.NotNull;

public class CreeperListen implements Listener {

    private static final Logger logger = LoggerFactory.getLogger(CreeperListen.class);

    @EventHandler(priority = EventPriority.LOWEST)
    public void onBoom(@NotNull ExplosionPrimeEvent event) {
        Entity entity = event.getEntity();
        // if creeper boom!!
        if (entity instanceof CraftCreeper creeper) {
            // cancel original event
            event.setCancelled(true);
            // call a custom explosion event
            Creeper handle = creeper.getHandle();
            explodeCreeper(event, handle);
        }
    }

    public void explodeCreeper(ExplosionPrimeEvent event, Creeper creeper) {
        creeper.die(creeper.damageSources().genericKill());
        Level level = creeper.level();
        level.explode(creeper, creeper.getX(), creeper.getY(), creeper.getZ(), event.getRadius(), event.getFire(),
            ExplosionInteraction.NONE); // CraftBukkit
        creeper.discard();
        //spawnLingeringCloud(creeper);
    }
}

 

[yangood]

I tried to change CREEPER("creeper", Creeper.class, 50) to my own version CREEPER("creeper", CustomCreeper.class, 50) by using reflection on org.bukkit.entity.EntityType, but it didn't work.