Hey,  I was looking to make a block that gives players around it (in a given radius) and gives them a potion effect, I have everything already done, I just cant figure out how to search around a block for entitys.

 

~Any help would be appreciated, Shaun O'Neill.

Beacon is the thing you want to look at.

You can use World#getEntitiesWithinAABB(ENTITY_CLASS,BOUNDING_BOX). You can replace the ENTITY_CLASS with EntityPlayer.class for a player. For the BOUNDING_BOX, you can use TileEntity#getRenderBoundingBox().expand(RADIUS,RADIUS,RADIUS).

TileEntity#getRenderBoundingBox().expand(RADIUS,RADIUS,RADIUS).

 

Really? I had trouble with that and just copied how the Beacon tileEntity works for the AxisAlignedBB didin't know ant boundingBox would work.

Hey, I've looked at what you both said, but I keep getting an error.  The GitHub page for the block is https://github.com/XeliteXirish/Quantum-Energistics-2/blob/master/src/main/Common/com/XeliteXirish/QuantumEnergistics2/tileEntity/TileEntityPotionDispencer.java

 

The error I get is-

-- Head --
Stacktrace:
at com.XeliteXirish.QuantumEnergistics2.tileEntity.TileEntityPotionDispencer.<init>(TileEntityPotionDispencer.java:21)
at com.XeliteXirish.QuantumEnergistics2.block.blockPotionDispencer.createNewTileEntity(blockPotionDispencer.java:17)
at net.minecraft.block.Block.createTileEntity(Block.java:1778)
at net.minecraft.world.chunk.Chunk.func_150806_e(Chunk.java:947)
at net.minecraft.world.ChunkCache.getTileEntity(ChunkCache.java:102)
at net.minecraft.client.renderer.WorldRenderer.updateRenderer(WorldRenderer.java:189)
at net.minecraft.client.renderer.RenderGlobal.updateRenderers(RenderGlobal.java:1624)
at net.minecraft.client.renderer.EntityRenderer.renderWorld(EntityRenderer.java:1271)

 

The error is on line: List players = this.worldObj.getEntitiesWithinAABB(EntityPlayer.class, axisalignedbb);

Any help would be nice

try moving that code into your update method like:

 

@Override
public void updateEntity() 
{
	if (!getWorldObj().isRemote)
	{
		List players = getWorldObj().getEntitiesWithinAABB(EntityPlayer.class, this.getRenderBoundingBox().expand(range, range, range));
	        Iterator iterator = players.iterator();
                        EntityPlayer entityplayer;
                        while (iterator.hasNext())
                        {
                              entityplayer = (EntityPlayer)iterator.next();
                              ExtendPlayerRotManaStam props = ExtendPlayerRotManaStam.get(entityplayer);
                              if (props.needsMana())
                              {
             	                 if (mana > 1)
            	                 {
            		             props.regenMana(1f);
            		             mana -= 1;            		
            	                 }
                               }
                           }
                        repairItemsOnPlayers(players);
	}
}

 

remember you want to check whenever there is a nearby player.

Sorry I don't have any clue how I forgot that haha, anyways I have it working perfectly now For anyone interested in seeing it:https://github.com/XeliteXirish/Quantum-Energistics-2/blob/master/src/main/Common/com/XeliteXirish/QuantumEnergistics2/tileEntity/TileEntityPotionDispencer.java (Il commit in in a minute)