moved a bunch of stuff

src/main/java/carpet/mixins/IntegratedServerMixin.java

@@ -0,0 +1,23 @@
+package carpet.mixins;
+
+import carpet.CarpetServer;
+import net.minecraft.server.integrated.IntegratedServer;
+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(IntegratedServer.class)
+public class IntegratedServerMixin
+{
+    @Inject(method = "setupServer",
+            at = @At(
+                    value = "INVOKE",
+                    shift = At.Shift.AFTER,
+                    target = "Lnet/minecraft/server/integrated/IntegratedServer;setKeyPair(Ljava/security/KeyPair;)V"
+            )
+    )
+    private void onSetupServerIntegrated(CallbackInfoReturnable<Boolean> cir) {
+        CarpetServer.onServerLoaded((IntegratedServer) (Object) this);
+    }
+}