Hi all,

I've been looking a few on the web but I haven't found enough informations. I would like to override the existing snowball entity (actually I want it to be turned into a projectile). I quickly looked on the Railcraft's Github but I lost myself (I thought it replaces the simple track). Any ideas?

Edited February 1, 20187 yr by Sunser
solved

I think you can handle the EntityJoinWorld (or possibly the EntityConstructing) event and create your your new entity, copy the position and direction of motion and kill the original one.

Not what I expected but this sounds fun Thanks !

So I implemented a little event handler :

Spoiler

package com.moresnowballs.moresnowballsmod.event;

import com.moresnowballs.moresnowballsmod.entity.EntityCustomSnowball;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.projectile.EntitySnowball;
import net.minecraft.world.World;
import net.minecraftforge.fml.common.eventhandler.EventPriority;
import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;

public class EventHandlerServer {
    // Gestion des events coté serveur
    @SubscribeEvent(priority = EventPriority.HIGHEST)
    public void EntityJoinWorldEvent(Entity entity, World world) {
        if (entity instanceof EntitySnowball) {
            // creating new entity
            EntityLivingBase thrower = ((EntitySnowball) entity).getThrower();
            EntityCustomSnowball entitysnowball = new EntityCustomSnowball(world, thrower);
            entitysnowball.shoot(thrower, thrower.rotationPitch, thrower.rotationYaw, 0.0F, 1.5F, 1.0F);
            world.spawnEntity(entitysnowball);
            // killing old entity
            world.setEntityState(entity, (byte)3);
            entity.setDead();
        }
    }
}

 

I've registered it in my server proxy :

Spoiler

@Override
    public void init(FMLInitializationEvent event) {
        MinecraftForge.EVENT_BUS.register(new EventHandlerServer());
    }

 

I've made a few tests and the handler is not working. What did I fail ?

Thanks a lot. I'll make sure I won't do it twice.

Now it's working fine, but I can still see the vanilla entity being summoned and destroyed. Maybe using EntityConstructing event would be better.

Here's the function :

Spoiler

@SubscribeEvent(priority = EventPriority.HIGHEST)
    public void replaceVanillaSnowball(EntityJoinWorldEvent event) {
        Entity entity = event.getEntity();
        World world = event.getWorld();
        if (entity instanceof EntitySnowball) {
            if (!world.isRemote) {
                // creating new entity
                EntityLivingBase thrower = ((EntitySnowball) entity).getThrower();
                EntityCustomSnowball entitysnowball = new EntityCustomSnowball(world, thrower);
                entitysnowball.shoot(thrower, thrower.rotationPitch, thrower.rotationYaw, 0.0F, 1.5F, 1.0F);
                world.spawnEntity(entitysnowball);
                // killing old entity
                world.setEntityState(entity, (byte)3);
                entity.setDead();
            }
        }
    }

It correctly summons my custom entity but the vanilla one is still visible a few ticks.

 

Great! Haven't seen this event has cancelable. Thanks again.