I want to exactly like I say: Spawn a Mob when the player is near this block.

 

Block:

package net.endernoobs.rpgmod;

import java.util.Random;

import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.item.Item;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.tileentity.TileEntityMobSpawner;
import net.minecraft.world.World;

public class BlockGrimReaper extends Block{
protected BlockGrimReaper(Material p_i45394_1_) {
	super(p_i45394_1_);

}
public TileEntity createNewTileEntity(World p_149915_1_, int p_149915_2_)
    {
        return new TileEntityGrimReaper();
    }
 public Item getItemDropped(int p_149650_1_, Random p_149650_2_, int p_149650_3_)
    {
        return null;
    }


}

 

Tile Entity:

package net.endernoobs.rpgmod;

import net.minecraft.tileentity.TileEntity;

public class TileEntityGrimReaper extends TileEntity {
private int activatingRangeFromPlayer = 16;

public boolean isActivated() {
	return this.worldObj.getClosestPlayer((double) this.xCoord + 0.5D,
			(double) this.yCoord + 0.5D, (double) this.zCoord + 0.5D,
			(double) this.activatingRangeFromPlayer) != null;
}

public void updateEntity() {
	if (this.isActivated()) {
		EntityGrimReaper boss = new EntityGrimReaper(worldObj);
		this.worldObj.spawnEntityInWorld(boss);
		this.worldObj.setBlockToAir(this.xCoord, this.yCoord, this.zCoord);
	}

}
}

You need to override hasTileEntity as well.

 

How do I do that?

Okay, I updated the code, It still does not work.

Block:

package net.endernoobs.rpgmod;

 

import java.util.Random;

 

import net.minecraft.block.Block;

import net.minecraft.block.material.Material;

import net.minecraft.item.Item;

import net.minecraft.tileentity.TileEntity;

import net.minecraft.tileentity.TileEntityMobSpawner;

import net.minecraft.world.World;

 

public class BlockGrimReaper extends Block{

protected BlockGrimReaper(Material p_i45394_1_) {

super(p_i45394_1_);

 

}

public TileEntity createNewTileEntity(World p_149915_1_, int p_149915_2_)

    {

        return new TileEntityGrimReaper();

    }

public Item getItemDropped(int p_149650_1_, Random p_149650_2_, int p_149650_3_)

    {

        return null;

    }

@Override

public boolean hasTileEntity(int metadata) {

return true;

}

 

 

}

 

Tile Entity:

package net.endernoobs.rpgmod;

 

import net.minecraft.tileentity.TileEntity;

 

public class TileEntityGrimReaper extends TileEntity {

private int activatingRangeFromPlayer = 16;

 

public boolean isActivated() {

System.out.println("Active");

return this.worldObj.getClosestPlayer((double) this.xCoord + 0.5D,

(double) this.yCoord + 0.5D, (double) this.zCoord + 0.5D,

(double) this.activatingRangeFromPlayer) != null;

}

 

@Override

public void updateEntity() {

System.out.println("Is it active?");

if (this.isActivated()) {

EntityGrimReaper boss = new EntityGrimReaper(worldObj);

this.worldObj.spawnEntityInWorld(boss);

this.worldObj.setBlockToAir(this.xCoord, this.yCoord, this.zCoord);

}

 

}

}

 

Do you get the messages in the console?

 

No