PurifierMessageHandler *Changed Energy*

public class PurifierMessageHandler implements IMessageHandler<PurifierMessage, IMessage> {

    @Override
    public IMessage onMessage(PurifierMessage message, MessageContext ctx) {
        EntityPlayer player = RobotiCraft.proxy.getPlayerFromContext(ctx);
        Container container = player.openContainer;

        if(container.windowId == message.id) {
            container.updateProgressBar(0, message.progress);
            container.updateProgressBar(1, message.currentProgress);
            container.updateProgressBar(2, message.powerReceived);
        }

        return null;
    }
}