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[1.15.2] Modifying Vanilla Mobs


Fuffles
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Hey all,

I'd love to have a Creeper keep track of who ignited it (Flint & Steel), but to do that Im pretty sure I'd have to edit how Creepers work, right? Correct me if Im wrong here ofc, but if there aint any way, how would one exactly edit a mob's class?

Edited by Fuffles
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4 hours ago, ChampionAsh5357 said:

PlayerInteractEvent#EntityInteract with some clever usage of a capability on the creeper probably would work.

Im attempting that but I can not save who did it. I need to have the 'igniter' during the entity death event. For some reason Im unable to add a NBT tag for this

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7 hours ago, ChampionAsh5357 said:

Would you happen to be able to show your code? This is a very general statement. You should only need to store the UUID of the player.

 

Quote

public static void onPlayerInteractEvent(PlayerInteractEvent.EntityInteract interactEvent)
    {
        Entity interactee = interactEvent.getTarget();
        if (interactee instanceof CreeperEntity)
        {
            if (interactEvent.getItemStack().getItem() == Items.FLINT_AND_STEEL)
            {
                CompoundNBT nbts = interactee.writeWithoutTypeId(new CompoundNBT());
                nbts.putString("id", interactee.getEntityString());
                UUID interactor = PlayerEntity.getUUID(interactEvent.getPlayer().getGameProfile());
                nbts.putUniqueId("ignitorUUID", interactor);
                ((CreeperEntity)interactee).readAdditional(nbts);
            }
        }
    }
    
    public static void onKillEvent(LivingDeathEvent deathEvent)
    {
        Entity srcEnt = deathEvent.getSource().getTrueSource();
        if (srcEnt instanceof CreeperEntity)
        {
            //check if srcEnt has the tag with a value and then give an advancement to the 'ignitor';
        }
    }

Tried with multiple read/write fns but whenever I got the data per cmd I always got nothing

Edited by Fuffles
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4 hours ago, Fuffles said:

CompoundNBT nbts = interactee.writeWithoutTypeId(new CompoundNBT());
                nbts.putString("id", interactee.getEntityString());
                UUID interactor = PlayerEntity.getUUID(interactEvent.getPlayer().getGameProfile());
                nbts.putUniqueId("ignitorUUID", interactor);
                ((CreeperEntity)interactee).readAdditional(nbts);

This is not a capability, the nbt data is only useful when saving or loading a world in this case. What you've done is literally nothing since the data will never be read.

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11 hours ago, ChampionAsh5357 said:

This is not a capability, the nbt data is only useful when saving or loading a world in this case. What you've done is literally nothing since the data will never be read.

Then how could I store it somehow in the creeper entity?

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hit a roadblock
Xz7R4vd.png

IgniterStorage code

Quote


[...]
import net.minecraftforge.common.capabilities.Capability;
import net.minecraftforge.common.capabilities.Capability.IStorage;

public class IgniterStorage implements IStorage<IBasic>
{
    @Override
    public INBT writeNBT(Capability<IBasic> capability, IBasic instance, Direction side) 
    {
        CompoundNBT nbts = new CompoundNBT();
        nbts.putUniqueId("igniter", instance.getUUID());
        return nbts;
    }

    @Override
    public void readNBT(Capability<IBasic> capability, IBasic instance, Direction side, INBT nbt) 
    {
        instance.setUUID(((CompoundNBT)nbt).getUniqueId("igniter"));
    }
}

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