Adding Custom Button to Vanilla GUI

[Cephrus]

I need to add a button to the vanilla GUI class GuiCreateWorld.

In order to add this button, I need to move the Survival/Hardcore/Creative button out of the way.

 

How would I go about doing this (preferably without ASM)?

[Ernio]

You could try using GuiOpenEvent InitGuiEvent.Post to add new button to list, you could also probably access alredy created buttons and find the one you want to move and re-add it.

 

Note: Your mod shouldn't edit whole GUI, rather make button-link to new window.

 

EDIT: use GuiScreenEvent, it has access to initGui() (InitGuiEvent.Post), while open event is totally pre-init.

[Cephrus]

How would I go about giving functionality to that button?

 

 

[Ernio]

Well, I have NO idea on how to do it properly, but I know how I did that in past.

 

Have look here:

http://www.minecraftforge.net/forum/index.php/topic,28979.0.html

 

You can pretty much do the same/similar thing. (utilize MouseEvent).

Remember about scaling.

 

Note: There might be a better way.

[Abastro]

You can use ActionPerformedEvent for click. (Maybe ActionPerformedEvent.Post would do what you want)

You can check if it is your button by comparing the button.id