Block that hurts hostile mobs but not the player or passive mobs?

[MikeZ]

Hi!

I want to make a block, that if a hostile mob (zombie, creeper, ...) collide with it, they get damage.

And the player or passive mobs should'nt be hurt.

Is there any way to make this block?

 

Thanks,

Mike

[MikeZ]

Override onEntityCollidedWithBlock (or whatever it's called) in your block class, check if the Entity colliding is an IMob, and if so, damage it.

 

Ok, thank you.

I changed my Block.class, but it has no effect.

 

Heres my Block.class:

 

 

package MikesMod.blocks;

 

import java.util.Random;

 

import MikesMod.MainClass;

import cpw.mods.fml.relauncher.Side;

import cpw.mods.fml.relauncher.SideOnly;

import net.minecraft.block.Block;

import net.minecraft.block.material.Material;

import net.minecraft.client.renderer.texture.IconRegister;

import net.minecraft.creativetab.CreativeTabs;

import net.minecraft.entity.Entity;

import net.minecraft.entity.EntityLiving;

import net.minecraft.potion.Potion;

import net.minecraft.potion.PotionEffect;

import net.minecraft.world.World;

 

public class MikesOreBlock extends Block{

 

@SideOnly(Side.CLIENT)

private String texture;

 

public MikesOreBlock(int par1, Material par2Material, String texture) {

super(par1, par2Material);

this.texture = texture;

this.setCreativeTab(MainClass.tabMikesMod);

this.setHardness(6F);

this.setResistance(15F);

}

 

public int idDropped(int par1, Random par2Random, int par3) {

return MainClass.MikesOreBlock.blockID;

}

 

@SideOnly(Side.CLIENT)

public void registerIcons(IconRegister iconRegister) {

blockIcon = iconRegister.registerIcon("mike:" + texture);

}

 

 

@Override

public void onEntityCollidedWithBlock( World world, int x, int y, int z, Entity entity ) {

if (entity instanceof EntityLiving) {

((EntityLiving)entity).addPotionEffect(new PotionEffect(Potion.poison.id, 200, 1));

}

}

}

 

 

 

Thanks,

Mike

[delpi]

Away from my setup so can't give you the right setup, but I think your potion reference is wrong. 

[MikeZ]

Away from my setup so can't give you the right setup, but I think your potion reference is wrong.

 

Ok, I wait for your answer

[delpi]

 

Nevermind, don't think that is it. 

 

How abuot you try to just damage the entity instead of the potion and see if you get a different result. 

 

Might also put a logger in there to make sure it is actaully getting called.

 

 

Looked up one that worked for me.

 

 

 

 

player.addPotionEffect(new PotionEffect(Potion.confusion.getId(), 20 * 5, 1));

 

 

 

 

 

vs

 

 

 

((EntityLiving)entity).addPotionEffect(new PotionEffect(Potion.poison.id, 200, 1));

 

 

 

[blaxout1213]

Change EntityLiving to EntityMob, after the instanceof

 

[jabelar]

Override onEntityCollidedWithBlock (or whatever it's called) in your block class, check if the Entity colliding is an IMob, and if so, damage it.

 

I actually think that onEntityCollidedWithBlock() method doesn't work for the idea of an entity "bumping" into a block.  Rather it is intended for those types of blocks that an entity can actually "enter" into.  Like a portal or a web.  And arrows are allowed to "enter" blocks to trigger this method.

 

If you think about it, most entities can't "collide" with a regular block because the path finding won't let that happen -- the movement is prevented before an actual collision occurs.

 

It is a poorly named method, but from some other debugging I've done recently I came to the conclusion that you have to be inside the block to trigger this method.

 

I could be wrong, but that was something I thought I previously found to be true.

 

Anyway, it is easy enough to prove.  Just put a System.out.println() statement in the method to see whether it is ever being called.

[delpi]

I've got some protection blocks setup.  If you want this to be a very common block, it could be a bad idea, but assuming it is not a world populate block, just create a Tileentity.

 

Then set it up to search every so many ticks for entities around it that meet your criteria, and do whatever.