From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <blake.galbreath@gmail.com>
Date: Sat, 22 Aug 2020 23:36:21 +0200
Subject: [PATCH] Fix SpawnChangeEvent not firing for all use-cases


diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index 0995a3a274df988a5c63c813de8213019a7c47c4..17725a575a29aa8076582e1b8c644ffd928cfaae 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -1700,7 +1700,9 @@ public class ServerLevel extends Level implements ServerEntityGetter, WorldGenLe
         float f1 = this.levelData.getSpawnAngle();
 
         if (!blockposition1.equals(pos) || f1 != angle) {
+            org.bukkit.Location prevSpawnLoc = this.getWorld().getSpawnLocation(); // Paper - Call SpawnChangeEvent
             this.levelData.setSpawn(pos, angle);
+            new org.bukkit.event.world.SpawnChangeEvent(this.getWorld(), prevSpawnLoc).callEvent(); // Paper - Call SpawnChangeEvent
             this.getServer().getPlayerList().broadcastAll(new ClientboundSetDefaultSpawnPositionPacket(pos, angle));
         }
 
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
index 5ca7db643a1616df57be114faf9ce2e33e8d4eb8..3ff0a43907cbe2cb4e54c57d9ac735dc0dd7f8f4 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
@@ -242,12 +242,14 @@ public class CraftWorld extends CraftRegionAccessor implements World {
     @Override
     public boolean setSpawnLocation(int x, int y, int z, float angle) {
         try {
-            Location previousLocation = this.getSpawnLocation();
-            this.world.levelData.setSpawn(new BlockPos(x, y, z), angle);
+            // Location previousLocation = this.getSpawnLocation(); // Paper - Call SpawnChangeEvent; moved to nms.ServerLevel
+            this.world.setDefaultSpawnPos(new BlockPos(x, y, z), angle); // Paper - use ServerLevel#setDefaultSpawnPos
 
+            // Paper start - Call SpawnChangeEvent; move to nms.ServerLevel
             // Notify anyone who's listening.
-            SpawnChangeEvent event = new SpawnChangeEvent(this, previousLocation);
-            this.server.getPluginManager().callEvent(event);
+            // SpawnChangeEvent event = new SpawnChangeEvent(this, previousLocation);
+            // server.getPluginManager().callEvent(event);
+            // Paper end - Call SpawnChangeEvent
 
             return true;
         } catch (Exception e) {