From 835c8422f1b0c8b05005252128c552c36266a82f Mon Sep 17 00:00:00 2001
From: Julian Krings <juliankrings6@gmail.com>
Date: Mon, 2 Jun 2025 17:42:36 +0200
Subject: [PATCH] calculate spawn location async

---
 .../engine/platform/BukkitChunkGenerator.java     | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/core/src/main/java/com/volmit/iris/engine/platform/BukkitChunkGenerator.java b/core/src/main/java/com/volmit/iris/engine/platform/BukkitChunkGenerator.java
index 410e8bbe0..ab5d67066 100644
--- a/core/src/main/java/com/volmit/iris/engine/platform/BukkitChunkGenerator.java
+++ b/core/src/main/java/com/volmit/iris/engine/platform/BukkitChunkGenerator.java
@@ -40,6 +40,7 @@ import com.volmit.iris.util.io.ReactiveFolder;
 import com.volmit.iris.util.scheduling.ChronoLatch;
 import com.volmit.iris.util.scheduling.J;
 import com.volmit.iris.util.scheduling.Looper;
+import io.papermc.lib.PaperLib;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.Setter;
@@ -144,6 +145,20 @@ public class BukkitChunkGenerator extends ChunkGenerator implements PlatformChun
         }
     }
 
+    @Nullable
+    @Override
+    public Location getFixedSpawnLocation(@NotNull World world, @NotNull Random random) {
+        Location location = new Location(world, 0, 64, 0);
+        PaperLib.getChunkAtAsync(location)
+                .thenAccept(c -> {
+                    World w = c.getWorld();
+                    if (!w.getSpawnLocation().equals(location))
+                        return;
+                    w.setSpawnLocation(location.add(0, w.getHighestBlockYAt(location) - 64, 0));
+                });
+        return location;
+    }
+
     private void setupEngine() {
         IrisData data = IrisData.get(dataLocation);
         IrisDimension dimension = data.getDimensionLoader().load(dimensionKey);