patch-remap/mache-vineflower-stripped/net/minecraft/server/commands/SummonCommand.java.patch


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--- a/net/minecraft/server/commands/SummonCommand.java
+++ b/net/minecraft/server/commands/SummonCommand.java
@@ -93,8 +67,8 @@
                         .finalizeSpawn(source.getLevel(), source.getLevel().getCurrentDifficultyAt(entity.blockPosition()), MobSpawnType.COMMAND, null, null);
                 }
 
-                if (!level.tryAddFreshEntityWithPassengers(entity)) {
-                    throw ERROR_DUPLICATE_UUID.create();
+                if (!worldserver.tryAddFreshEntityWithPassengers(entity, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.COMMAND)) { // CraftBukkit - pass a spawn reason of "COMMAND"
+                    throw SummonCommand.ERROR_DUPLICATE_UUID.create();
                 } else {
                     return entity;
                 }