Add ModCore integration

src/main/java/com/replaymod/core/ReplayModMMLauncher.java

@@ -1,8 +1,14 @@
 //#if FABRIC>=1
 package com.replaymod.core;
 
+import com.replaymod.extras.modcore.ModCoreInstaller;
+import net.fabricmc.loader.api.FabricLoader;
+import net.fabricmc.loader.api.ModContainer;
 import org.spongepowered.asm.mixin.Mixins;
 
+import java.io.File;
+import java.util.Optional;
+
 // We need to wait for MM to call us, otherwise we might initialize our mixins before it calls optifabric which would
 // result in OF classes not existing while our mixins get resolved.
 public class ReplayModMMLauncher implements Runnable {
@@ -16,6 +22,41 @@ public class ReplayModMMLauncher implements Runnable {
         Mixins.addConfiguration("mixins.render.blend.replaymod.json");
         Mixins.addConfiguration("mixins.render.replaymod.json");
         Mixins.addConfiguration("mixins.replay.replaymod.json");
+
+        try {
+            initModCore();
+        } catch (Throwable t) {
+            System.err.println("ReplayMod caught error during ModCore init:");
+            t.printStackTrace();
+        }
+    }
+
+    // Forge equivalent is in ReplayModTweaker
+    private void initModCore() {
+        if (System.getProperty("REPLAYMOD_SKIP_MODCORE", "false").equalsIgnoreCase("true")) {
+            System.out.println("ReplayMod not initializing ModCore because REPLAYMOD_SKIP_MODCORE is true.");
+            return;
+        }
+
+        if (FabricLoader.getInstance().isDevelopmentEnvironment()) {
+            System.out.println("ReplayMod not initializing ModCore because we're in a development environment.");
+            return;
+        }
+
+        File gameDir = FabricLoader.getInstance().getGameDirectory();
+
+        Optional<ModContainer> minecraft = FabricLoader.getInstance().getModContainer("minecraft");
+        if (!minecraft.isPresent()) {
+            System.err.println("ReplayMod could not determine Minecraft version, skipping ModCore.");
+            return;
+        }
+        String mcVer = minecraft.get().getMetadata().getVersion().getFriendlyString();
+
+        int result = ModCoreInstaller.initialize(gameDir, mcVer + "_fabric");
+        System.out.println("ReplayMod ModCore init result: " + result);
+        if (ModCoreInstaller.isErrored()) {
+            System.err.println(ModCoreInstaller.getError());
+        }
     }
 }
 //#endif

src/main/java/com/replaymod/core/tweaker/ReplayModTweaker.java

@@ -0,0 +1,71 @@
+//#if FABRIC>=1
+// Fabric equivalent is in ReplayModMMLauncher
+//#else
+//#if MC>=11400
+//$$ // Generally not supported by RM
+//#else
+//$$ package com.replaymod.core.tweaker;
+//$$
+//$$ import com.replaymod.extras.modcore.ModCoreInstaller;
+//$$ import net.minecraft.launchwrapper.ITweaker;
+//$$ import net.minecraft.launchwrapper.Launch;
+//$$ import net.minecraft.launchwrapper.LaunchClassLoader;
+//$$
+//$$ import java.io.File;
+//$$ import java.util.List;
+//$$
+//$$ public class ReplayModTweaker implements ITweaker {
+//$$     @Override
+//$$     public void acceptOptions(List<String> args, File gameDir, File assetsDir, String profile) {
+//$$     }
+//$$
+//$$     @Override
+//$$     public void injectIntoClassLoader(LaunchClassLoader classLoader) {
+//$$         // Inject Mixin's tweaker (cause you can only specify one tweaker in the manifest)
+//$$         @SuppressWarnings("unchecked")
+//$$         List<String> tweakClasses = (List<String>) Launch.blackboard.get("TweakClasses");
+//$$         tweakClasses.add("org.spongepowered.asm.launch.MixinTweaker");
+//$$
+        //#if MC>=11202 && MC<=11202
+        //$$ initModCore("1.12.2");
+        //#endif
+        //#if MC>=10809 && MC<=10809
+        //$$ initModCore("1.8.9");
+        //#endif
+//$$     }
+//$$
+//$$     @Override
+//$$     public String getLaunchTarget() {
+//$$         return null;
+//$$     }
+//$$
+//$$     @Override
+//$$     public String[] getLaunchArguments() {
+//$$         return new String[0];
+//$$     }
+//$$
+//$$     private void initModCore(String mcVer) {
+//$$         try {
+//$$             if (System.getProperty("REPLAYMOD_SKIP_MODCORE", "false").equalsIgnoreCase("true")) {
+//$$                 System.out.println("ReplayMod not initializing ModCore because REPLAYMOD_SKIP_MODCORE is true.");
+//$$                 return;
+//$$             }
+//$$
+//$$             if ((Boolean) Launch.blackboard.get("fml.deobfuscatedEnvironment")) {
+//$$                 System.out.println("ReplayMod not initializing ModCore because we're in a development environment.");
+//$$                 return;
+//$$             }
+//$$
+//$$             int result = ModCoreInstaller.initialize(Launch.minecraftHome, mcVer + "_forge");
+//$$             System.out.println("ReplayMod ModCore init result: " + result);
+//$$             if (ModCoreInstaller.isErrored()) {
+//$$                 System.err.println(ModCoreInstaller.getError());
+//$$             }
+//$$         } catch (Throwable t) {
+//$$             System.err.println("ReplayMod caught error during ModCore init:");
+//$$             t.printStackTrace();
+//$$         }
+//$$     }
+//$$ }
+//#endif
+//#endif