case EngineBronzeGUI:
return new GuiEngineBronze(player.inventory, (EngineBronze) getTileForestry(world, x, y, z));
case EngineCopperGUI:
return new GuiEngineCopper(player.inventory, (EngineCopper) getTileForestry(world, x, y, z));
case EngineTinGUI:
return new GuiEngineTin(player.inventory, (EngineTin) getTileForestry(world, x, y, z));
case GeneratorGUI: