I registered an entity, but when I summon my entity, Minecraft says: "Unable to summon entity"

My codes:

c/CRegistries.java:

package com.kg.kgforge.c;

import com.kg.kgforge.KGForge;
import net.minecraft.entity.EntityType;
import net.minecraftforge.registries.DeferredRegister;
import net.minecraftforge.registries.ForgeRegistries;

public class CRegistries {
    public static final DeferredRegister<EntityType<?>> ENTITIES = DeferredRegister.create(ForgeRegistries.ENTITIES, KGForge.MODID);
}

c/CEntities.java:

package com.kg.kgforge.c;

import com.kg.kgforge.entity.KagoEntity;
import net.minecraft.entity.EntityClassification;
import net.minecraft.entity.EntityType;

public class CEntities {
    public static final EntityType<KagoEntity> KAGO = EntityType.Builder.of(KagoEntity::new, EntityClassification.MONSTER).sized(0.6F, 1.95F).clientTrackingRange(8).build("kago");
}

entity/KagoEntity.java:

package com.kg.kgforge.entity;

import net.minecraft.entity.EntityType;
import net.minecraft.entity.monster.MonsterEntity;
import net.minecraft.world.World;

public class KagoEntity extends MonsterEntity {
    public KagoEntity(EntityType<? extends MonsterEntity> type, World world) {
        super(type, world);
    }
}

init/InitEntities.java:

package com.kg.kgforge.init;

import com.kg.kgforge.c.CEntities;
import com.kg.kgforge.c.CRegistries;

public class InitEntities {
    public static void initEntities() {
        CRegistries.ENTITIES.register("kago", () -> CEntities.KAGO);
        CRegistries.ENTITIES.register(Init.EVENT_BUS);
    }
}

Edited October 13, 20214 yr by ArianKG

you need to overwrite Entity#getAddEntityPacket and return NetworkHooks#getEntitySpawningPacket

I think the problem is in the mob attributes.

This is the full log when I created a new world and summoned my entity: https://gist.github.com/ArianKG/fdcbefa409e88cd43d6c33fa68dbcc98

@diesieben07 What is the problem now?

package com.kg.kgforge.entity;

import net.minecraft.entity.EntityType;
import net.minecraft.entity.LivingEntity;
import net.minecraft.entity.ai.attributes.AttributeModifierMap;
import net.minecraft.entity.ai.attributes.Attributes;
import net.minecraft.entity.monster.MonsterEntity;
import net.minecraft.world.World;
import net.minecraftforge.event.entity.EntityAttributeCreationEvent;

import java.util.HashMap;
import java.util.Map;

public class KagoEntity extends MonsterEntity {
    public KagoEntity(EntityType<? extends KagoEntity> type, World world) {
        super(type, world);
        Map<EntityType<? extends LivingEntity>, AttributeModifierMap> map = new HashMap<>();
        map.put(type, createAttributes().build());
        new EntityAttributeCreationEvent(map);
        setHealth(getMaxHealth());
    }
    public static AttributeModifierMap.MutableAttribute createAttributes() {
        return MonsterEntity.createMonsterAttributes()
            .add(Attributes.MAX_HEALTH, 512.0D)
            .add(Attributes.MOVEMENT_SPEED, 1.0D)
            .add(Attributes.FOLLOW_RANGE, 128.0D);
    }
}

Edited October 13, 20214 yr by ArianKG

@diesieben07 So, what should I do now? I don't know how can I use EntityAttributeCreationEvent

Oh, I'm really sorry, it's event...

@diesieben07 What is the problem now?

package com.kg.kgforge.c;

import com.kg.kgforge.entity.KagoEntity;
import net.minecraft.entity.EntityClassification;
import net.minecraft.entity.EntityType;
import net.minecraftforge.event.entity.EntityAttributeCreationEvent;

public class CEntities {
    public static final EntityType<KagoEntity> KAGO = EntityType.Builder.of(KagoEntity::new, EntityClassification.MONSTER).sized(0.6F, 1.95F).clientTrackingRange(8).build("kago");
    public static void registerAttributes(EntityAttributeCreationEvent event) {
        event.put(KAGO, KagoEntity.createAttributes().build());
    }
}

Edited October 13, 20214 yr by ArianKG

@diesieben07 So, what is wrong with my code? What code should I change?

you need to change your Entity registry refer to this doc (it's the FCW)