carpet server ticking

src/main/java/carpet/mixins/MinecraftServerMixin.java

@@ -0,0 +1,44 @@
+package carpet.mixins;
+
+import carpet.CarpetServer;
+import com.mojang.authlib.GameProfileRepository;
+import com.mojang.authlib.minecraft.MinecraftSessionService;
+import com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService;
+import com.mojang.datafixers.DataFixer;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.WorldGenerationProgressListenerFactory;
+import net.minecraft.server.command.CommandManager;
+import net.minecraft.util.UserCache;
+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 java.io.File;
+import java.net.Proxy;
+import java.util.function.BooleanSupplier;
+
+@Mixin(MinecraftServer.class)
+public abstract class MinecraftServerMixin
+{
+    // Called during game start
+    @Inject(method = "<init>", at = @At(value = "HEAD"))
+    private void onMinecraftServerCTOR(File file_1, Proxy proxy_1, DataFixer dataFixer_1,
+                                       CommandManager serverCommandManager_1, YggdrasilAuthenticationService yggdrasilAuthenticationService_1,
+                                       MinecraftSessionService minecraftSessionService_1, GameProfileRepository gameProfileRepository_1,
+                                       UserCache userCache_1, WorldGenerationProgressListenerFactory worldGenerationProgressListenerFactory_1,
+                                       String string_1, CallbackInfo ci)
+    {
+        CarpetServer.init((MinecraftServer) (Object) this);
+    }
+
+    //to inject right before
+    // this.tickWorlds(booleanSupplier_1);
+    @Inject(
+            method = "Lnet/minecraft/server/MinecraftServer;tick(Ljava/util/function/BooleanSupplier;)V",
+            at = @At(value = "INVOKE", target = "Lnet/minecraft/server/MinecraftServer;tickWorlds(Ljava/util/function/BooleanSupplier;)V", shift = At.Shift.BEFORE, ordinal = 0)
+    )
+    private void onTick(BooleanSupplier booleanSupplier_1, CallbackInfo ci) {
+        CarpetServer.tick((MinecraftServer) (Object) this);
+    }
+}