I want to add more world options when making a world, for example the start chest option etc.

Should I use an event or something to look when the GUI of world-options is opened and then add another button?

Also, how can I save what you provided (for now I only want a boolean) and use it in the world?

Does anyone know?

How to use the settings in the world?

Also, wich side should I register the events?

I want to add an option to the world that, if set to true, gives you items when you first spawn, so a little bit like the spawn chest

Also, I can't access the buttonList

Forgot to look in the event for it

Is there an event that fires when the world is created?

Can I maybe use capabilities?

To know if someone has already had the items

Okay, I'll try

So I've got the capabilitys, now how do I set the world capability to whatever I set in the world options?

What do you mean with a global variable?

Do you know a global variable that I can use?

But how?

So.. where do I put it?

So, I've now got it all working, but when I resize the screen while the gui is up, my button disappears and only reappears when I 'reload' the screen

Anyone knows how to fix this?

Client handler

	@SubscribeEvent
public void onGuiPreInit(GuiScreenEvent.InitGuiEvent.Pre event) {
	GuiScreen gui = event.getGui();
	if (gui instanceof GuiCreateWorld) {
		List<GuiButton> buttonList = event.getButtonList();
		GuiButton giveItem;
		giveItem = addButton(new GuiButton(11, gui.width / 2 + 5, 187, 150, 20, "Give Items: OFF"), buttonList);
		giveItem.visible = false;
	}
}

protected <T extends GuiButton> T addButton(GuiButton button, List<GuiButton> list) {
	list.add(button);
	return (T) button;
}

@SubscribeEvent
public void onGuiPreInteraction(GuiScreenEvent.ActionPerformedEvent.Pre event) {
	GuiScreen gu = event.getGui();
	if (gu instanceof GuiCreateWorld) {
		GuiCreateWorld gui = (GuiCreateWorld) gu;
		GuiButton button = event.getButton();
		if (button.id == 2) {
			for (int i = 0; i < event.getButtonList().size(); i++) {
				GuiButton button1 = event.getButtonList().get(i);
				if (button1.id == 11) {
					if ("survival".equals(CheeseUtils.getField(GuiCreateWorld.class, gui, "gameMode"))) {
						ShouldGiveItems.worldCreateGive = false;
						button1.enabled = false;
					} else if ("hardcore".equals(CheeseUtils.getField(GuiCreateWorld.class, gui, "gameMode"))) {
						ShouldGiveItems.worldCreateGive = false;
						button1.enabled = true;

					} else {
						ShouldGiveItems.worldCreateGive = false;
						button1.enabled = true;
					}
				}
			}
		} else if (button.id == 3) {
			for (int i = 0; i < event.getButtonList().size(); i++) {
				GuiButton button1 = event.getButtonList().get(i);
				if (button1.id == 11) {
					button1.visible = !(Boolean) CheeseUtils.getField(GuiCreateWorld.class, gui,
							"inMoreWorldOptionsDisplay");
				} else if (button1.id == 3) {
					if (!(Boolean) CheeseUtils.getField(GuiCreateWorld.class, gui, "inMoreWorldOptionsDisplay")) {
						button1.xPosition = gui.width / 2 - 155;
					} else {
						button1.xPosition = gui.width / 2 - 75;
					}
				}
			}
		} else if (button.id == 11) {
			if (!ShouldGiveItems.worldCreateGive) {
				button.displayString = "Give Items: ON";
				ShouldGiveItems.worldCreateGive = true;
			} else {
				button.displayString = "Give Items: OFF";
				ShouldGiveItems.worldCreateGive = false;
			}
		}
	}
}

It doesn't  :'(

It is yes..? Now the whole button is gone?!?! WHAT?!?! Okay, now the whole button is gone, and the Done button still moves place, like in the code and the code is not being ran (the init gui event, checked by printing in console), code is the same as before..?

Now it is ran.?

So basicly, the button isn't registered right, because when I print all the button ids in the console

You should use InitGuiEvent.Post instead of InitGuiEvent.Pre, because the button list is cleared after the Pre event.

Ah thanks, it works again