1 files changed, 21 insertions, 0 deletions
diff --git a/src/map/npc.c b/src/map/npc.c
index 1954b5d7f..7724a2b8a 100644
--- a/src/map/npc.c
+++ b/src/map/npc.c
@@ -1417,6 +1417,27 @@ static int npc_unload_ev(DBKey key,void *data,va_list ap) {
 	return 0;
 }
 
+static int npc_unload_dup_sub(DBKey key,void * data,va_list app)
+{
+	struct npc_data *nd = (struct npc_data *)data;
+	va_list ap;
+	int src_id;
+
+	if(nd->bl.type!=BL_NPC || nd->bl.subtype != SCRIPT)
+		return 0;
+
+	ap = va_arg(app, va_list);
+	src_id=va_arg(ap,int);
+	if (nd->u.scr.src_id == src_id)
+		npc_unload(nd);
+	return 0;
+}
+//Removes all npcs that are duplicates of the passed one. [Skotlex]
+void npc_unload_duplicates (struct npc_data *nd)
+{
+	map_foreachiddb(npc_unload_dup_sub,nd->bl.id);
+}
+
 int npc_unload (struct npc_data *nd)
 {
 	nullpo_ret(nd);