Right now I have a custom mob that spawns during the night and doesn't despawn during the day, which is the way I want it. Problem is, more of the same mob continually spawn and soon take over an area. I'm using the method of Limiting spawns per Chunk to 1 and it only spawns in one at a time, but I'm still having this problem. How does vanilla minecraft keep mobs like cows and such from continually spawning in an area over time AND keeping the cows from despawning?

Override getCanSpawnHere()

You can access the world with the entity's worldObj, posX, posY, and posZ (even though it hasn't spawned yet) and check to see if any more of your mob are in the area, and if so, return false.

Nice. I saw that you had a similar post to this awhile back so I'm glad it was you that answered.

Alright....I have no idea how to do this. I know to check for Instance of ..., but I do not know how to check the area at all. I looked into the mob spawner code to see how it checks for mob count but I can't figure it out.

Alright....I have no idea how to do this. I know to check for Instance of ..., but I do not know how to check the area at all. I looked into the mob spawner code to see how it checks for mob count but I can't figure it out.

 

this.worldObj

 

You can access the world with the entity's worldObj, posX, posY, and posZ

Right, but do I need to check a block range? I see that one can check a block location and see what block it is for a spawn, but I'm assuming you need to broaden that range to check for other entities in the chunk or something.

Right, but do I need to check a block range? I see that one can check a block location and see what block it is for a spawn, but I'm assuming you need to broaden that range to check for other entities in the chunk or something.

 

The world class can do all of that.  world.getEntitiesInAABB() for instance.

Alright so this is what I have so far, although I know it's probably wrong and I am missing the Pos X, Y, Z.

 

@Override
public boolean getCanSpawnHere()
    {
	float f = 8.0F;
        List list;
        int i;
        

            list = this.worldObj.getEntitiesWithinAABB(EntityForestWalker.class, this.boundingBox.expand((double)f, (double)f, (double)f));

            if (list.size() > 0){
            	return false;
            }
            else
            {
            	return true;
            }

    } 

 

I'm assuming it is something close to this?

You mean like this.posX?

Yes. I am honestly at the boundaries of my knowledge in how to do things like this so I will probably need a little more help in figuring out how this works. The getEntitiesWithinAABB line is correct right? How do I write the other components of this in a workable fashion?

Well you could clone the mob's own bounding box and then use .expand() instead of creating a new AABB.