Implementation of A more useful Lava Boiler (#1814)

* Fix Missing null/empty checks on boilers base class

Would cause a deadlock on empty boilers unable to start,
as it tried to transfer null or empty FuildStack.

* Fix Sound coordinates so it can be centered on block

* WIP Lava Boiler Improuvements

* :spotlessapply

* Add GUI slot block background textures

* Restrict ash slot to remove items only (disallow inserting items there)

* Finalize GUI and Obsidian Production mechanic

* Fix still output Obisidian from cooled Lava even when no more Lava available

* Lava Boiler Textures: Improves GUI and TOP

- Fluid slot now has Steam themed textures
- Item slot block background gets a smaller icon that hides behind
actual item blocks
- Boiler TOP is now a drain texture instead of pump

* Add null check

1 files changed, 1 insertions, 0 deletions

diff --git a/src/main/java/gregtech/api/gui/modularui/GUITextureSet.java b/src/main/java/gregtech/api/gui/modularui/GUITextureSet.java
index 1bacff886a..8b6e9f85ec 100644
--- a/src/main/java/gregtech/api/gui/modularui/GUITextureSet.java
+++ b/src/main/java/gregtech/api/gui/modularui/GUITextureSet.java
@@ -41,6 +41,7 @@ public class GUITextureSet {
     public static final Function<SteamVariant, GUITextureSet> STEAM = steamVariant -> new GUITextureSet()
             .setMainBackground(GT_UITextures.BACKGROUND_STEAM.get(steamVariant))
             .setItemSlot(GT_UITextures.SLOT_ITEM_STEAM.get(steamVariant))
+            .setFluidSlot(GT_UITextures.SLOT_FLUID_STEAM.get(steamVariant))
             .setCoverTab(
                     GT_UITextures.TAB_COVER_STEAM_NORMAL.get(steamVariant),
                     GT_UITextures.TAB_COVER_STEAM_HIGHLIGHT.get(steamVariant),