ActuallyAdditions/src/main/java/de/ellpeck/actuallyadditions/mod/util/VanillaPacketDispatcher.java

package de.ellpeck.actuallyadditions.mod.util;

import net.minecraft.entity.player.EntityPlayerMP;
import net.minecraft.server.management.PlayerChunkMapEntry;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;
import net.minecraft.world.WorldServer;

public final class VanillaPacketDispatcher {

    //Don't call from the client.
    public static void dispatchTEToNearbyPlayers(TileEntity tile) {
        WorldServer world = (WorldServer) tile.getWorld();
        PlayerChunkMapEntry entry = world.getPlayerChunkMap().getEntry(tile.getPos().getX() >> 4, tile.getPos().getZ() >> 4);

        if (entry == null) return;

        for (EntityPlayerMP player : entry.getWatchingPlayers())
            player.connection.sendPacket(tile.getUpdatePacket());

    }

    public static void dispatchTEToNearbyPlayers(World world, BlockPos pos) {
        TileEntity tile = world.getTileEntity(pos);
        if (tile != null) dispatchTEToNearbyPlayers(tile);
    }
}