fix MC-251068

PATCHED.md

@@ -54,14 +54,15 @@
 | Basic    | [MC-183990](https://bugs.mojang.com/browse/MC-183990) | Group AI of some mobs breaks when their target dies                                                                                            |
 | Basic    | [MC-199467](https://bugs.mojang.com/browse/MC-199467) | Certain entity animations stop after they've existed in world for too long                                                                     |
 | Basic    | [MC-200418](https://bugs.mojang.com/browse/MC-200418) | Cured baby zombie villagers stay as jockey variant                                                                                             |
-| Basic    | [MC-214147](https://bugs.mojang.com/browse/MC-214147) | Skeletons wearing leather armor still convert to strays in powder snow                                                                         |
 | Basic    | [MC-206705](https://bugs.mojang.com/browse/MC-206705) | Spyglasses stay in use in spectator mode                                                                                                       |
 | Basic    | [MC-206922](https://bugs.mojang.com/browse/MC-206922) | Items dropped by entities that are killed by lightning instantly disappear                                                                     |
+| Basic    | [MC-214147](https://bugs.mojang.com/browse/MC-214147) | Skeletons wearing leather armor still convert to strays in powder snow                                                                         |
 | Basic    | [MC-215530](https://bugs.mojang.com/browse/MC-215530) | The freezing effect isn't immediately removed when switching into spectator mode                                                               |
 | Basic    | [MC-223153](https://bugs.mojang.com/browse/MC-223153) | Block of Raw Copper uses stone sounds instead of copper sounds                                                                                 |
 | Basic    | [MC-224729](https://bugs.mojang.com/browse/MC-224729) | Partially generated chunks are not saved in some situations                                                                                    |
 | Basic    | [MC-231743](https://bugs.mojang.com/browse/MC-231743) | minecraft.used:minecraft.POTTABLE_PLANT doesn't increase when placing plants into flower pots                                                  |
 | Basic    | [MC-232869](https://bugs.mojang.com/browse/MC-232869) | Adult striders can spawn with saddles in peaceful mode                                                                                         |
+| Basic    | [MC-251068](https://bugs.mojang.com/browse/MC-251068) | If you delete your only world, then you are no longer automatically thrown into the menu of creating a new world                               |
 
 ## Previously patched
 Bugs that this mod has patched but has been superseded by a vanilla update.

src/client/java/dev/isxander/debugify/client/mixins/basic/mc251068/WorldSelectionListMixin.java

@@ -0,0 +1,27 @@
+package dev.isxander.debugify.client.mixins.basic.mc251068;
+
+import com.llamalad7.mixinextras.injector.v2.WrapWithCondition;
+import dev.isxander.debugify.fixes.BugFix;
+import dev.isxander.debugify.fixes.FixCategory;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.gui.screens.ConfirmScreen;
+import net.minecraft.client.gui.screens.ProgressScreen;
+import net.minecraft.client.gui.screens.Screen;
+import net.minecraft.client.gui.screens.worldselection.WorldSelectionList;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+
+@BugFix(id = "MC-251068", category = FixCategory.BASIC, env = BugFix.Env.CLIENT, description = "If you delete your only world, then you are no longer automatically thrown into the menu of creating a new world")
+@Mixin(WorldSelectionList.WorldListEntry.class)
+public class WorldSelectionListMixin {
+    @Shadow
+    @Final
+    private Minecraft minecraft;
+
+    @WrapWithCondition(method = "method_20170", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/Minecraft;setScreen(Lnet/minecraft/client/gui/screens/Screen;)V", ordinal = 1))
+    private boolean dontShowEmptyWorldList(Minecraft instance, Screen screen) {
+        return (this.minecraft.screen instanceof ProgressScreen || this.minecraft.screen instanceof ConfirmScreen);
+    }
+}

src/client/resources/debugify.client.mixins.json

@@ -29,6 +29,7 @@
     "basic.mc237493.TelemetryEventInstanceMixin",
     "basic.mc237493.TelemetryEventWidgetMixin",
     "basic.mc237493.TelemetryInfoScreenMixin",
+    "basic.mc251068.WorldSelectionListMixin",
     "basic.mc263865.KeyboardHandlerMixin",
     "basic.mc4490.FishingHookRendererMixin",
     "basic.mc46503.ClientPacketListenerMixin",