Fix: Make Sodium optional with new fabric loader, and make no fog and Voxy work together (#347)

Author: blocksimus

src/main/java/com/lambda/mixin/OptionalModMixinPlugin.java

@@ -0,0 +1,61 @@
+/*
+ * Copyright 2026 Lambda
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lambda.mixin;
+
+import net.fabricmc.loader.api.FabricLoader;
+import org.objectweb.asm.tree.ClassNode;
+import org.spongepowered.asm.mixin.extensibility.IMixinConfigPlugin;
+import org.spongepowered.asm.mixin.extensibility.IMixinInfo;
+
+import java.util.List;
+import java.util.Set;
+
+public class OptionalModMixinPlugin implements IMixinConfigPlugin {
+    @Override
+    public boolean shouldApplyMixin(String targetClassName, String mixinClassName) {
+        if (targetClassName.startsWith("net.caffeinemc.mods.sodium.")) {
+            return FabricLoader.getInstance().isModLoaded("sodium");
+        }
+        if (targetClassName.startsWith("net.fabricmc.fabric.impl.client.indigo.")) {
+            return FabricLoader.getInstance().isModLoaded("fabric-renderer-indigo");
+        }
+        return true;
+    }
+
+    @Override
+    public void onLoad(String mixinPackage) {}
+
+    @Override
+    public String getRefMapperConfig() {
+        return null;
+    }
+
+    @Override
+    public void acceptTargets(Set<String> myTargets, Set<String> otherTargets) {}
+
+    @Override
+    public List<String> getMixins() {
+        return null;
+    }
+
+    @Override
+    public void preApply(String targetClassName, ClassNode targetClass, String mixinClassName, IMixinInfo mixinInfo) {}
+
+    @Override
+    public void postApply(String targetClassName, ClassNode targetClass, String mixinClassName, IMixinInfo mixinInfo) {}
+}

src/main/java/com/lambda/mixin/render/SodiumWorldRendererMixin.java

@@ -29,7 +29,7 @@
 @Mixin(SodiumWorldRenderer.class)
 public class SodiumWorldRendererMixin {
     @Unique
-    private final FogParameters NO_FOG = new FogParameters(0f, 0f, 0f, 0f, 0f, 0f, 0f, 0f);
+    private final FogParameters NO_FOG = new FogParameters(0f, 0f, 0f, 0f, Float.MAX_VALUE, Float.MAX_VALUE, Float.MAX_VALUE, Float.MAX_VALUE);
 
     @ModifyExpressionValue(method = "drawChunkLayer(Lnet/minecraft/client/render/BlockRenderLayerGroup;Lnet/caffeinemc/mods/sodium/client/render/chunk/ChunkRenderMatrices;DDDLnet/minecraft/client/gl/GpuSampler;)V", at = @At(value = "FIELD", target = "Lnet/caffeinemc/mods/sodium/client/render/SodiumWorldRenderer;lastFogParameters:Lnet/caffeinemc/mods/sodium/client/util/FogParameters;", opcode = Opcodes.GETFIELD))
     private FogParameters modifyFogParameters(FogParameters original) {

src/main/resources/lambda.mixins.json

@@ -2,6 +2,7 @@
   "required": true,
   "minVersion": "0.8",
   "package": "com.lambda.mixin",
+  "plugin": "com.lambda.mixin.OptionalModMixinPlugin",
   "compatibilityLevel": "JAVA_21",
   "client": [
     "CrashReportMixin",