From 63efe8b1c659a3b1491321bbfbd0d1731daf8e74 Mon Sep 17 00:00:00 2001
From: skotlex <skotlex@54d463be-8e91-2dee-dedb-b68131a5f0ec>
Date: Thu, 5 Oct 2006 14:37:06 +0000
Subject: - Added function npc_unload_duplicates(), it unloads all npcs that
 are a duplicate of the passed one. For use with @unloadnpc to prevent crashes
 when you unload the npc that has duplicates.

git-svn-id: https://rathena.svn.sourceforge.net/svnroot/rathena/trunk@8939 54d463be-8e91-2dee-dedb-b68131a5f0ec
---
 Changelog-Trunk.txt |  4 ++++
 src/map/atcommand.c |  1 +
 src/map/npc.c       | 21 +++++++++++++++++++++
 src/map/npc.h       |  1 +
 4 files changed, 27 insertions(+)

diff --git a/Changelog-Trunk.txt b/Changelog-Trunk.txt
index 5a654a3b8..7c16e98aa 100644
--- a/Changelog-Trunk.txt
+++ b/Changelog-Trunk.txt
@@ -3,6 +3,10 @@ Date	Added
 AS OF SVN REV. 5091, WE ARE NOW USING TRUNK.  ALL UNTESTED BUGFIXES/FEATURES GO INTO TRUNK.
 IF YOU HAVE A WORKING AND TESTED BUGFIX PUT IT INTO STABLE AS WELL AS TRUNK.
 
+2006/10/05
+	* Added function npc_unload_duplicates(), it unloads all npcs that are a
+	  duplicate of the passed one. For use with @unloadnpc to prevent crashes
+	  when you unload the npc that has duplicates. [Skotlex]
 2006/10/04
 	* Bowling bash now always hits twice regardless of situation. [Skotlex]
 	* Added an underflow check to prevent sending to the client negative mdef2
diff --git a/src/map/atcommand.c b/src/map/atcommand.c
index d0bf422e0..836f40f40 100644
--- a/src/map/atcommand.c
+++ b/src/map/atcommand.c
@@ -6234,6 +6234,7 @@ int atcommand_unloadnpc(const int fd, struct map_session_data* sd,
 	}
 
 	if ((nd = npc_name2id(NPCname)) != NULL) {
+		npc_unload_duplicates(nd);
 		npc_unload(nd);
 		clif_displaymessage(fd, msg_txt(112)); // Npc Disabled.
 	} else {
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);
diff --git a/src/map/npc.h b/src/map/npc.h
index 94de8064a..2ea4f7eb7 100644
--- a/src/map/npc.h
+++ b/src/map/npc.h
@@ -77,6 +77,7 @@ void npc_timerevent_quit(struct map_session_data *sd);
 int npc_gettimerevent_tick(struct npc_data *nd);
 int npc_settimerevent_tick(struct npc_data *nd,int newtimer);
 int npc_remove_map(struct npc_data *nd);
+void npc_unload_duplicates (struct npc_data *nd);
 int npc_unload(struct npc_data *nd);
 int npc_reload(void);
 int npc_script_event(TBL_PC* sd, int type);
-- 
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