I'm sure I'm doing something wrong that is very obvious but I can't see it. 

 

I put a print command on both sides of my GUIHandler and when I tell the server to open the GUI, its not communicating with the client.

 

I can of course force the client side to open, but then they don't talk and wierd stuff happens.

 

 

GUIHandler  (#3 is the one of interest)

 

 

public class MyGuiHandler implements IGuiHandler {

public MyGuiHandler() {

}

    @Override
    public Object getServerGuiElement(int ID, EntityPlayer player, World world, int x, int y, int z) {
    	//System.out.println("Tried GUI server for " + ID);
    	
        // Get Tile Entity
        PortalMulti_Tile npc_spawner_tile = (PortalMulti_Tile) world.getTileEntity(x, y, z);

        // determine case if exists
        if (npc_spawner_tile != null) {
        	
            switch (ID) {
            
                case 1:
                	
                    break;
                    
                case 2:
                	
                	break;
                	                	
                case 3:
                	
                	return new MyContainer(player);
                    
            }
            
        }

        // Default
        return null;
        
    }

    @Override
    public Object getClientGuiElement(int ID, EntityPlayer player, World world, int x, int y, int z) {
    	//System.out.println("Tried GUI client for " + ID);
    	
        // determine case
        switch (ID) {
        
            case 1:
                return new Overworld_GUI(player, world, x, y, z);
             
            case 2:
            	return new Protection_Admin_GUI(player, world, x, y, z);
            	
            case 3:
            	return new MyInventory(new MyContainer(player));
            	
        }

        // Default
        return null;
        
    }
    
}

 

 

 

 

Main class - well the relevant parts

 

 

@Mod(modid = Dimension_Multiplyer.modid, name = Dimension_Multiplyer.name, version = Dimension_Multiplyer.version)

public class Dimension_Multiplyer {

    // Setup Mod Details
    public static final String modid = "dimension_multiplyer";
    public static final String name = "Dimension Multiplyer";
    public static final String version = "1.2";
    public static final String pre_path = "clandoolittle.dimension_multiplyer";

    // Setup Intance
    @Instance(modid)
    public static Dimension_Multiplyer instance;


@EventHandler
    public void Init(FMLInitializationEvent event) {


myguihandler = new MyGuiHandler();
        NetworkRegistry.INSTANCE.registerGuiHandler(this, myguihandler);

}

 

 

 

 

Called on serverside to open the GUI

 

 

player.openGui(instance, guiID, player.worldObj, (int) Math.floor(player.posX), (int) Math.floor(player.posY), (int) Math.floor(player.posZ));

 

 

 

I probably didn't explain enough

 

I am sending a packet to the server with a keybinder.

 

It works, I'm tracking it with a print.

 

It causes the serversideGUI call to happen (the systemprint shows it), but the client one never happens.

 

I'm not sure about your null comment.  That only happens if there isn't a ID specified, and in this case I specified 3.

Well crud, it is getting to null.

 

added another print statement.

 

Thanks, it was the line

 

if (npc_spawner_tile != null) {

 

 

Forgot to remove that when i copied it out of another spot.