I have a monster and i want to detect if its in a specified range to player.

There is any way to do it?

I tryed that, but its only see the closest entity and all what in the list:

List<Entity> entities = mc.theWorld.getEntitiesWithinAABBExcludingEntity(mc.thePlayer, mc.thePlayer.boundingBox.expand(19.0D, 19.0D, 19.0D));
	Entity entity;

	if(entities.iterator().hasNext()){
		entity = (Entity)entities.iterator().next();

		if(entity instanceof EntityGrunt){

			if(numTicks % 20L == 0L && sanity != 0)
				sanity -= 1;

			if(terrorcounter != 0){
				terrorcounter--;
			}
			else if(terrorcounter == 0){
				mc.theWorld.playSound(X, Y, Z, "fluffy:Terror", 999.0F, 1.0F, false);
				terrorcounter = 80;
			}

			if(chase == false){
				try{
					if(fear == false){	
						Minecraft.getMinecraft().entityRenderer.theShaderGroup = new ShaderGroup(Minecraft.getMinecraft().getResourceManager(), Minecraft.getMinecraft().getFramebuffer(), new ResourceLocation("shaders/post/deconverge.json"));
						Minecraft.getMinecraft().entityRenderer.theShaderGroup.createBindFramebuffers(Minecraft.getMinecraft().displayWidth, Minecraft.getMinecraft().displayHeight);
					}
					mc.theWorld.playSound(X, Y, Z, "fluffy:music.AttackGrunt", 999.0F, 1.0F, false);
					this.chase = true;
				}
				catch(IOException ioexception)
				{}
			}
		}else{
			if(chase){
				mc.entityRenderer.theShaderGroup = null;
				this.chase = false;
				terrorcounter = 0;
				mc.gameSettings.setSoundLevel(SoundCategory.RECORDS, 0.0F);
				mc.gameSettings.setSoundLevel(SoundCategory.RECORDS, sound);
			}
		}
	}else{
		if(chase){
			mc.entityRenderer.theShaderGroup = null;
			this.chase = false;
			terrorcounter = 0;
			mc.gameSettings.setSoundLevel(SoundCategory.RECORDS, 0.0F);
			mc.gameSettings.setSoundLevel(SoundCategory.RECORDS, sound);
		}
	}

I can't get an entity out of the list coz entities.contain() not work.

Thanks for helping!

That's not how iterator works.

 

Please go learn how and then see if you can figure it out.

Okey i did what you said and come up with this:

	while(entities.iterator().hasNext()){

		if(entities.contains(EntityGrunt.class){ //NOT WORK
			mc.thePlayer.addChatMessage(new ChatComponentText("ON"));
		}else{
			mc.thePlayer.addChatMessage(new ChatComponentText("OFF"));
		}
		break;
	}

 

But i can't get the entity from the list.

Only OFF text showing that means i screw up the "contains" code.

I missed it before, but no wonder your contains call isn't working. Your checking to see if a list of entities (not classes) contains a class. What you want to do is get the iterators current value with entities.iterator().next().

 

Then you would check with

if (entityInstance instanceof EntityGrunt)
{
    // your code here
}

Thank you!

Sorry but i have another problem with this.

If the entity instanceof EntityGrunt then: Turn ON

If the list is empty then: Turn OFF

How can i make NOT instanceof?

If i use else then its sometimes turns off coz its checking for the closest entity and its can be an item or xp or anything.

I need notinstanceof somehow but i cant do that.

 

Sorry but i have another problem with this.

If the entity instanceof EntityGrunt then: Turn ON

If the list is empty then: Turn OFF

How can i make NOT instanceof?

If i use else then its sometimes turns off coz its checking for the closest entity and its can be an item or xp or anything.

I need notinstanceof somehow but i cant do that.

 

!

...

 

just put this in the if statement:

if (!(entityInstance instanceof EntityGrunt))

Thank you guys, but what i was looking is too simple and figured out by my own.

I use now: (its the same but with a mobselector at the end.)

List<Entity> entities = mc.theWorld.getEntitiesWithinAABBExcludingEntity(mc.thePlayer, mc.thePlayer.boundingBox.expand(19.0D, 19.0D, 19.0D), EntityGrunt.mobSelector);

 

if(entities.isEmpty){

}

else{

}

 

Its that simple!

Thanks anyway for helping me out!

Okey i give up!

Nothing has worked so far.

I made a new code:

	List<Entity> entities = mc.theWorld.getEntitiesWithinAABBExcludingEntity(mc.thePlayer, mc.thePlayer.boundingBox.expand(19.0D, 19.0D, 19.0D), EntityGrunt.mobSelector);
	Entity entity;

	while(entities.iterator().hasNext()){
		entity = (Entity)entities.iterator().next();

		if(entity instanceof EntityGrunt){
			mc.thePlayer.addChatComponentMessage(new ChatComponentText("ON"));
		}
		else if(!(entity instanceof EntityGrunt)){
			mc.thePlayer.addChatComponentMessage(new ChatComponentText("OFF"));
		}
		break;
	}
	if(entities.isEmpty())
	{
		mc.thePlayer.addChatComponentMessage(new ChatComponentText("OFF"));
	}

The problem is when another mob is closer than the mob i want to detect its simply turns off!

So iterator not gona for me this i why i need list.contains.

Thanks for helping!

Try the following

List<Entity> entities = mc.theWorld.getEntitiesWithinAABBExcludingEntity(mc.thePlayer, mc.thePlayer.boundingBox.expand(19.0D, 19.0D, 19.0D), EntityGrunt.mobSelector);
	Entity entity;
                boolean foundTarget = false;
                Iterator<EntityLiving> i = entities.iterator();

	while(i.hasNext()){
		entity = (Entity)i.next();	

		if(entity instanceof EntityGrunt){
                                foundTarget = true;
		}
		//break; <-- Why did you have this?
	}
	if(foundTarget)
	{
		mc.thePlayer.addChatComponentMessage(new ChatComponentText("ON"));
	}else
                {
                        mc.thePlayer.addChatComponentMessage(new ChatComponentText("OFF"));
                 }

sorry ether my Internet or the forum stopped working half way through my post.

Thank you guys for helping!

brandon:Its the same as mine just in a different way. But apprechiate you help!

diesieben:Now its clear to me, thanks to you. BUT, how am i supposed to make it working than? My logic is failed.

 

Like diesieben07 and brandon3055 mentioned you need to put your iterator into a field before you start the while loop.  So then you're using the same iterator each time the loop tests for .hasNext().

 

Also I think the break statement in your loop is in the wrong place.  Since I think you want to stop searching as soon as you find an entity, you want to break the while loop inside the if statement where you find the entity you are searching for.  Basically there are two ways the while loop will end -- if it gets to end of list so there is no hasNext() or if it finds an entity that matches what you're looking for.

 

Maybe like this:

Entity entity;

                boolean foundTarget = false;

                Iterator<EntityLiving> i = entities.iterator();

 

while(i.hasNext()){

entity = (Entity)i.next();

 

if(entity instanceof EntityGrunt){

                                foundTarget = true;

                                break;

}

}

if(foundTarget)

{

mc.thePlayer.addChatComponentMessage(new ChatComponentText("ON"));

}else

                {

                        mc.thePlayer.addChatComponentMessage(new ChatComponentText("OFF"));

                }

Oh now i get it finally.

Thanks for everyone who is helped me!