Add Hud Render Events

[kevinthegreat1]

Deprecate HudRenderCallback.

[Fuzss]

Not sure this really goes far enough. The system used by NeoForge has always been pretty ideal (although quite invasive): splitting gui rendering into all the different parts (health, hotbar, status effects, etc.) and allowing mods to render their custom gui layers anywhere in-between.

Also it would be awesome to finally get shared height parameters for bars (health bar + armor bar on the left side, food + air on the right side) rendered above the hotbar in Fabric Api. So that multiple mods adding their own bars know at what height to render without interfering with others.

[kevinthegreat1]

Not sure this really goes far enough. The system used by NeoForge has always been pretty ideal (although quite invasive): splitting gui rendering into all the different parts (health, hotbar, status effects, etc.) and allowing mods to render their custom gui layers anywhere in-between.

I agree that Forge's implementation (last when I saw it) is much more versatile and comprehensive. It would be great to be able to cancel certain components too. However as you mentioned it is quite invasive, and in the past, this injection point hasn't exactly been the most stable. A more comprehensive api would need a bit more discussion with the maintainers, but I'd be happy to see it.

Also it would be awesome to finally get shared height parameters for bars (health bar + armor bar on the left side, food + air on the right side) rendered above the hotbar in Fabric Api. So that multiple mods adding their own bars know at what height to render without interfering with others.

The height problem is just reading the code to see the height where bars and components render right? Are you suggesting we provide z constants for different HUD elements?

[Fuzss]

The height problem is just reading the code to see the height where bars and components render right? Are you suggesting we provide z constants for different HUD elements?

No. NeoForge adds Gui#leftHeight and Gui#rightHeight. Those update automatically as vanilla bars are drawn above the hotbar. Mods drawing their own bars should update them as well. So e.g. if I have a mod that draws an armor toughness bar above the vanilla armor bar on the left hotbar side I know at what height to draw my bar at, and then another mod that also draws a bar at the left hotbar side can use the left height variable that has been updated by me to draw above me once more.

[Octol1ttle]

Suggested change

	* Called sometime during a specific HUD render stage.
	* Called during a HUD render stage.