forge: initialize launch for dedicated server mode

Signed-off-by: Chris Sanders <zidane@spongepowered.org>

forge/src/mixins/java/org/spongepowered/forge/mixin/core/server/MainMixin_Forge.java

@@ -0,0 +1,46 @@
+/*
+ * This file is part of Sponge, licensed under the MIT License (MIT).
+ *
+ * Copyright (c) SpongePowered <https://www.spongepowered.org>
+ * Copyright (c) contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package org.spongepowered.forge.mixin.core.server;
+
+import net.minecraft.server.Main;
+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.CallbackInfo;
+import org.spongepowered.common.applaunch.AppLaunch;
+import org.spongepowered.common.applaunch.plugin.PluginPlatform;
+import org.spongepowered.common.launch.Launch;
+import org.spongepowered.forge.launch.ForgeLaunch;
+
+@Mixin(Main.class)
+public abstract class MainMixin_Forge {
+
+    @Inject(method = "<clinit>", at = @At("RETURN"))
+    private static void forge$initLaunch(final CallbackInfo ci) {
+        final PluginPlatform pluginPlatform = AppLaunch.pluginPlatform();
+        final ForgeLaunch launch = new ForgeLaunch(pluginPlatform);
+        Launch.setInstance(launch);
+    }
+}

forge/src/mixins/resources/mixins.spongeforge.core.json

@@ -7,6 +7,7 @@
     "priority": 1301,
     "mixins": [
         "fml.ModContainerMixin_Forge",
+        "server.MainMixin_Forge",
         "server.level.ServerLevelMixin_Timings_Forge",
         "world.entity.item.ItemEntityMixin_Forge",
         "world.level.LevelMixin_Forge"