Added option to show classchange only to one player (#1587)

* Added option to show classchange only to one player

4 files changed, 27 insertions, 12 deletions

diff --git a/src/map/clif.c b/src/map/clif.c
index 674fbba1d..6897c357a 100644
--- a/src/map/clif.c
+++ b/src/map/clif.c
@@ -1352,7 +1352,7 @@ void clif_set_unit_walking(struct block_list* bl, struct map_session_data *tsd,
 /// 01b0 <id>.L <type>.B <value>.L
 /// type:
 ///     unused
-void clif_class_change(struct block_list *bl, int class_, int type)
+void clif_class_change(struct block_list *bl, int class_, int type, struct map_session_data *sd)
 {
 	nullpo_retv(bl);
 
@@ -1363,7 +1363,11 @@ void clif_class_change(struct block_list *bl, int class_, int type)
 		WBUFL(buf,2)=bl->id;
 		WBUFB(buf,6)=type;
 		WBUFL(buf,7)=class_;
-		clif->send(buf,packet_len(0x1b0),bl,AREA);
+
+		if (sd == NULL)
+			clif->send(buf, packet_len(0x1b0), bl, AREA);
+		else
+			clif->send(buf, packet_len(0x1b0), &sd->bl, SELF);
 	}
 }
 
diff --git a/src/map/clif.h b/src/map/clif.h
index b27adb5be..aefba5974 100644
--- a/src/map/clif.h
+++ b/src/map/clif.h
@@ -671,7 +671,7 @@ struct clif_interface {
 	void (*changetraplook) (struct block_list *bl,int val);
 	void (*refreshlook) (struct block_list *bl,int id,int type,int val,enum send_target target);
 	void (*sendlook) (struct block_list *bl, int id, int type, int val, int val2, enum send_target target);
-	void (*class_change) (struct block_list *bl,int class_,int type);
+	void (*class_change) (struct block_list *bl,int class_,int type, struct map_session_data *sd);
 	void (*skill_delunit) (struct skill_unit *su);
 	void (*skillunit_update) (struct block_list* bl);
 	int (*clearunit_delayed_sub) (int tid, int64 tick, int id, intptr_t data);
diff --git a/src/map/mob.c b/src/map/mob.c
index d5932f195..74d25b805 100644
--- a/src/map/mob.c
+++ b/src/map/mob.c
@@ -2832,7 +2832,7 @@ int mob_class_change (struct mob_data *md, int class_) {
 	mob_stop_walking(md, STOPWALKING_FLAG_NONE);
 	unit->skillcastcancel(&md->bl, 0);
 	status->set_viewdata(&md->bl, class_);
-	clif->class_change(&md->bl, md->vd->class, 1);
+	clif->class_change(&md->bl, md->vd->class, 1, NULL);
 	status_calc_mob(md, SCO_FIRST);
 	md->ud.state.speed_changed = 1; //Speed change update.
 
diff --git a/src/map/script.c b/src/map/script.c
index ef63697a7..30295b8dc 100644
--- a/src/map/script.c
+++ b/src/map/script.c
@@ -13840,15 +13840,26 @@ BUILDIN(undisguise)
  * Transform a bl to another class,
  * @type unused
  *------------------------------------------*/
-BUILDIN(classchange) {
-	int class, type;
-	struct block_list *bl=map->id2bl(st->oid);
+BUILDIN(classchange)
+{
+	int class, type, target;
+	struct block_list *bl = map->id2bl(st->oid);
 
-	if(bl==NULL) return true;
+	if (bl == NULL)
+		return true;
 
-	class = script_getnum(st,2);
-	type=script_getnum(st,3);
-	clif->class_change(bl, class, type);
+	class = script_getnum(st, 2);
+	type = script_getnum(st, 3);
+	target = script_hasdata(st, 4) ? script_getnum(st, 4) : 0;
+
+	if (target > 0) {
+		struct map_session_data *sd = script->charid2sd(st, target);
+		if (sd != NULL) {
+			clif->class_change(bl, class, type, sd);
+		}
+	} else {
+		clif->class_change(bl, class, type, NULL);
+	}
 	return true;
 }
 
@@ -21032,7 +21043,7 @@ void script_parse_builtin(void) {
 		BUILDIN_DEF(getcartinventorylist,""),
 		BUILDIN_DEF(getskilllist,""),
 		BUILDIN_DEF(clearitem,""),
-		BUILDIN_DEF(classchange,"ii"),
+		BUILDIN_DEF(classchange,"ii?"),
 		BUILDIN_DEF(misceffect,"i"),
 		BUILDIN_DEF(playbgm,"s"),
 		BUILDIN_DEF(playbgmall,"s?????"),