Hello. I am attempting to teleport the player to another (custom) dimension when he/she right clicks the block. When I use the code below, Minecraft crashes when I right click the block. I think the problem is how I am getting EntityPlayerMP. Am I doing something wrong? Is this even possible?

 

public boolean onBlockActivated(World world, int x, int y, int z, EntityPlayer player, int par6, float par7, float par8, float par9) {
          if(player.isSneaking()) return false;
          player.travelToDimension(ConfigurationHelper.vethea);
          EntityPlayerMP MPPlayer = (EntityPlayerMP)player; 
          MPPlayer.mcServer.getConfigurationManager().transferPlayerToDimension(MPPlayer, ConfigurationHelper.vethea); //Crashes. Need to find correct way to get EntityPlayerMP I think.
          return true;
}

EntityPlayerMP is server side only. You need to do a check to !world.isRemote - then you transfer the player.