Add tint override to texture packs

src/main/java/moe/nea/firmament/init/EarlyRiser.java

@@ -7,5 +7,6 @@ public class EarlyRiser implements Runnable {
         new ClientPlayerRiser().addTinkerers();
         new HandledScreenRiser().addTinkerers();
         new SectionBuilderRiser().addTinkerers();
+		new ItemColorsSodiumRiser().addTinkerers();
     }
 }

src/main/java/moe/nea/firmament/init/ItemColorsSodiumRiser.java

@@ -0,0 +1,64 @@
+package moe.nea.firmament.init;
+
+import me.shedaniel.mm.api.ClassTinkerers;
+import moe.nea.firmament.util.ErrorUtil;
+import net.fabricmc.loader.api.FabricLoader;
+import net.minecraft.client.color.item.ItemColorProvider;
+import net.minecraft.client.color.item.ItemColors;
+import net.minecraft.item.ItemStack;
+import org.objectweb.asm.Opcodes;
+import org.objectweb.asm.Type;
+import org.objectweb.asm.tree.ClassNode;
+import org.objectweb.asm.tree.InsnList;
+import org.objectweb.asm.tree.InsnNode;
+import org.objectweb.asm.tree.MethodInsnNode;
+import org.objectweb.asm.tree.VarInsnNode;
+
+public class ItemColorsSodiumRiser extends RiserUtils {
+	@IntermediaryName(ItemColors.class)
+	String ItemColors;
+	@IntermediaryName(ItemColorProvider.class)
+	String ItemColorProvider;
+	@IntermediaryName(ItemStack.class)
+	String ItemStack;
+	String getColorProvider = "sodium$getColorProvider";
+	Type getColorProviderDesc = Type.getMethodType(getTypeForClassName(ItemColorProvider),
+	                                               getTypeForClassName(ItemStack));
+
+	@Override
+	public void addTinkerers() {
+		ClassTinkerers.addTransformation(ItemColors, this::addSodiumOverride, true);
+	}
+
+	private void addSodiumOverride(ClassNode classNode) {
+		var node = findMethod(classNode, getColorProvider, getColorProviderDesc);
+		if (node == null) {
+			if (!FabricLoader.getInstance().isModLoaded("sodium"))
+				ErrorUtil.INSTANCE.softError("Sodium is present, but sodium color override could not be injected.");
+			return;
+		}
+		var p = node.instructions.getFirst();
+		while (p != null) {
+			if (p.getOpcode() == Opcodes.ARETURN) {
+				node.instructions.insertBefore(
+					p,
+					mkOverrideSodiumCall()
+				);
+			}
+			p = p.getNext();
+		}
+	}
+
+	private InsnList mkOverrideSodiumCall() {
+		var insnList = new InsnList();
+		insnList.add(new VarInsnNode(Opcodes.ALOAD, 0));
+		insnList.add(new InsnNode(Opcodes.SWAP));
+		insnList.add(new MethodInsnNode(Opcodes.INVOKEVIRTUAL,
+		                                getTypeForClassName(ItemColors).getInternalName(),
+		                                "overrideSodium_firmament",
+		                                Type.getMethodType(getTypeForClassName(ItemColorProvider),
+		                                                   getTypeForClassName(ItemColorProvider)).getDescriptor(),
+		                                false));
+		return insnList;
+	}
+}