Add LoaderMixin for compatibility purposes

Author: Deftu

versions/src/main/java/cc/polyfrost/oneconfig/internal/mixin/LoaderMixin.java

@@ -0,0 +1,45 @@
+/*
+ * This file is part of OneConfig.
+ * OneConfig - Next Generation Config Library for Minecraft: Java Edition
+ * Copyright (C) 2021~2023 Polyfrost.
+ *   <https://polyfrost.cc> <https://github.com/Polyfrost/>
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ *   OneConfig is licensed under the terms of version 3 of the GNU Lesser
+ * General Public License as published by the Free Software Foundation, AND
+ * under the Additional Terms Applicable to OneConfig, as published by Polyfrost,
+ * either version 1.0 of the Additional Terms, 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
+ * Lesser General Public License for more details.
+ *
+ *   You should have received a copy of the GNU Lesser General Public
+ * License.  If not, see <https://www.gnu.org/licenses/>. You should
+ * have also received a copy of the Additional Terms Applicable
+ * to OneConfig, as published by Polyfrost. If not, see
+ * <https://polyfrost.cc/legal/oneconfig/additional-terms>
+ */
+
+package cc.polyfrost.oneconfig.internal.mixin;
+
+import net.minecraftforge.fml.common.Loader;
+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;
+
+@Mixin(value = Loader.class, remap = false)
+public class LoaderMixin {
+
+    @Inject(method = "isModLoaded", at = @At("HEAD"), cancellable = true, remap = false)
+    private static void oneconfig$isModLoaded(String modname, CallbackInfoReturnable<Boolean> cir) {
+        if (modname.equals("oneconfig")) {
+            cir.setReturnValue(true);
+        }
+    }
+
+}

versions/src/main/resources/mixins.oneconfig.json

@@ -12,6 +12,7 @@
     "EntityPlayerSPMixin",
     "EntityRendererMixin",
     "GuiIngameForgeMixin",
+    "LoaderMixin",
     "MinecraftMixin",
     "NetworkManagerMixin",
     "OptifineConfigMixin",