Fix AntiBlind only partially preventing the darkness effect

Fixes https://wurstforum.net/d/688

src/main/java/net/wurstclient/hacks/AntiBlindHack.java

@@ -23,6 +23,6 @@ public final class AntiBlindHack extends Hack
 		setCategory(Category.RENDER);
 	}
 	
-	// See BackgroundRendererMixin, WorldRendererMixin,
-	// ClientPlayerEntityMixin.hasStatusEffect()
+	// See BackgroundRendererMixin, LightmapTextureManagerMixin,
+	// WorldRendererMixin, ClientPlayerEntityMixin.hasStatusEffect()
 }

src/main/java/net/wurstclient/mixin/LightmapTextureManagerMixin.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2014-2024 Wurst-Imperium and contributors.
+ *
+ * This source code is subject to the terms of the GNU General Public
+ * License, version 3. If a copy of the GPL was not distributed with this
+ * file, You can obtain one at: https://www.gnu.org/licenses/gpl-3.0.txt
+ */
+package net.wurstclient.mixin;
+
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+import net.minecraft.client.render.LightmapTextureManager;
+import net.wurstclient.WurstClient;
+
+@Mixin(LightmapTextureManager.class)
+public class LightmapTextureManagerMixin
+{
+	/**
+	 * Stops the other darkness effect in caves when AntiBlind is enabled.
+	 */
+	@Inject(at = @At("HEAD"),
+		method = "getDarknessFactor(F)F",
+		cancellable = true)
+	private void onGetDarknessFactor(float delta,
+		CallbackInfoReturnable<Float> cir)
+	{
+		if(WurstClient.INSTANCE.getHax().antiBlindHack.isEnabled())
+			cir.setReturnValue(0F);
+	}
+}

src/main/resources/wurst.mixins.json

@@ -42,6 +42,7 @@
     "KeyBindingMixin",
     "KeyboardMixin",
     "LanguageManagerMixin",
+    "LightmapTextureManagerMixin",
     "LivingEntityRendererMixin",
     "MinecraftClientMixin",
     "MobEntityRendererMixin",