What is the event for zombies breaking down doors?

[meee39]

I need to make a block that stops them from doing that. Also I need the event for slimes splitting into smaller ones.

[oa10712]

Not sure about the event, but the AI for breaking doors can be found in the minecraft source at net.minecraft.entity.ai.EntityAIBreakDoor; It looks like it just sets the door block to be air, I don't know what the associated event is called.

 

As far as the slime, see the setDead() method in net.minecraft.entity.monster.EntitySlime; for 1.10.2 source it is line #212

[jeffryfisher]

27 minutes ago, meee39 said:

I need to make a block that stops them from doing that

That block already exists in vanilla Minecraft. It's called "Iron Door". Servers also have a "peaceful" mode in which zombies don't even break wooden doors. You might look at how that's coded in vanilla.

[meee39]

No, what I mean is a block that looks at all zombies around it, if they try to break a door it will stop them.

[Alpvax]

You should replace the zombie EntityAIBreakDoor task with your own custom version which checks for your block in range in the canExecute method.

[meee39]

How do I replace EntityAI tasks?

[Draco18s]

The LivingEntity#tasks list is public. Just modify it.

[meee39]

But it didn't show up in autocomplete.

[Draco18s]

https://github.com/Draco18s/ReasonableRealism/blob/master/src/main/java/com/draco18s/farming/FarmingEventHandler.java#L282

[meee39]

That is odd. Eclipse claims that tasks cannot be resolved.

[Choonster]

10 hours ago, meee39 said:

That is odd. Eclipse claims that tasks cannot be resolved.

 

What type is the variable holding the entity you're trying to modify the tasks of? Since tasks is a field of EntityLiving, you can't reference it on a variable of type Entity or EntityLivingBase.

[meee39]

Oh I just realised the problem. I am using EntityLivingEvent.getEntity() which returns Entity, not EntityLiving. I will need to cast it to EntityZombie and then it will be fine.

[IceMetalPunk]

19 minutes ago, meee39 said:

Oh I just realised the problem. I am using EntityLivingEvent.getEntity() which returns Entity, not EntityLiving. I will need to cast it to EntityZombie and then it will be fine.

Just make sure if you do that you first check that the Entity is, in fact, an instance of EntityZombie, otherwise the cast could fail and cause problems.

[meee39]

In my event hooks I replace the Door break AI task with my own:

@SubscribeEvent
	public void onEntitySpawn(EntityJoinWorldEvent e) {
		if (e.getEntity() instanceof EntityZombie) {
			((EntityZombie)e.getEntity()).tasks.removeTask(new EntityAIBreakDoor((EntityLiving) e.getEntity()));
			((EntityZombie)e.getEntity()).tasks.addTask(8, new EntityAIBreakDoorCheckMobSuppressor((EntityLiving)e.getEntity()));
		}
	}

package com.leo.mobsuppressors.entities.ai;

import com.leo.mobsuppressors.EnumMobSuppressorType;
import com.leo.mobsuppressors.tileentity.TileEntityMobSuppressor;

import net.minecraft.block.Block;
import net.minecraft.block.BlockDoor;
import net.minecraft.entity.EntityLiving;
import net.minecraft.entity.ai.EntityAIDoorInteract;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.world.EnumDifficulty;

public class EntityAIBreakDoorCheckMobSuppressor extends EntityAIDoorInteract
{
    private int breakingTime;
    private int previousBreakProgress = -1;

    public EntityAIBreakDoorCheckMobSuppressor(EntityLiving entityIn)
    {
        super(entityIn);
    }

    /**
     * Returns whether the EntityAIBase should begin execution.
     */
    public boolean shouldExecute()
    {
    	for (TileEntity te: theEntity.world.loadedTileEntityList) {
    		if (te instanceof TileEntityMobSuppressor && ((TileEntityMobSuppressor) te).type == EnumMobSuppressorType.ZOMBIE) {
    			double distanceX = te.getPos().getX() - theEntity.getPosition().getX();
    			double distanceY = te.getPos().getY() - theEntity.getPosition().getY();
    			double distanceZ = te.getPos().getZ() - theEntity.getPosition().getZ();
    			
    			System.out.println(distanceX + "\n");
				System.out.println(distanceY + "\n");
				System.out.println(distanceZ + "\n\n");
    			
    			if (!(distanceX < 5 && distanceY < 5 && distanceZ < 5)) {
    				return false;
    			}
    		}
    	}
    	
        if (!super.shouldExecute())
        {
            return false;
        }
        else if (!this.theEntity.world.getGameRules().getBoolean("mobGriefing") || !this.theEntity.world.getBlockState(this.doorPosition).getBlock().canEntityDestroy(this.theEntity.world.getBlockState(this.doorPosition), this.theEntity.world, this.doorPosition, this.theEntity) || !net.minecraftforge.event.ForgeEventFactory.onEntityDestroyBlock(this.theEntity, this.doorPosition, this.theEntity.world.getBlockState(this.doorPosition)))
        {
            return false;
        } 
        else
        {
            BlockDoor blockdoor = this.doorBlock;
            return !BlockDoor.isOpen(this.theEntity.world, this.doorPosition);
        }
    }

    /**
     * Execute a one shot task or start executing a continuous task
     */
    public void startExecuting()
    {
        super.startExecuting();
        this.breakingTime = 0;
    }

    /**
     * Returns whether an in-progress EntityAIBase should continue executing
     */
    public boolean continueExecuting()
    {
        double d0 = this.theEntity.getDistanceSq(this.doorPosition);
        boolean flag;

        if (this.breakingTime <= 240)
        {
            BlockDoor blockdoor = this.doorBlock;

            if (!BlockDoor.isOpen(this.theEntity.world, this.doorPosition) && d0 < 4.0D)
            {
                flag = true;
                return flag;
            }
        }

        flag = false;
        return flag;
    }

    /**
     * Resets the task
     */
    public void resetTask()
    {
        super.resetTask();
        this.theEntity.world.sendBlockBreakProgress(this.theEntity.getEntityId(), this.doorPosition, -1);
    }

    /**
     * Updates the task
     */
    public void updateTask()
    {
        super.updateTask();

        if (this.theEntity.getRNG().nextInt(20) == 0)
        {
            this.theEntity.world.playEvent(1019, this.doorPosition, 0);
        }

        ++this.breakingTime;
        int i = (int)((float)this.breakingTime / 240.0F * 10.0F);

        if (i != this.previousBreakProgress)
        {
            this.theEntity.world.sendBlockBreakProgress(this.theEntity.getEntityId(), this.doorPosition, i);
            this.previousBreakProgress = i;
        }

        if (this.breakingTime == 240 && this.theEntity.world.getDifficulty() == EnumDifficulty.HARD)
        {
            this.theEntity.world.setBlockToAir(this.doorPosition);
            this.theEntity.world.playEvent(1021, this.doorPosition, 0);
            this.theEntity.world.playEvent(2001, this.doorPosition, Block.getIdFromBlock(this.doorBlock));
        }
    }
}

The zombies still break down doors.

[V0idWa1k3r]

11 minutes ago, meee39 said:

((EntityZombie)e.getEntity()).tasks.removeTask(new EntityAIBreakDoor((EntityLiving) e.getEntity()));

You need to iterate the tasks.taskEntries to find the one you want to remove. Removing the object you've just created is not going to work in most cases as it won't be present.

 

Your AI task can just extend EntityAIBreakDoor and that way you don't need to maintain a copy of vanilla's code. You can override the shouldExecute method and && the super condition and your condition just fine.

Edited July 11, 2017 by V0idWa1k3r