Follow up r15777, reworked skill_icewall_block so that it stops any attacks against anyone who got blocked off the wall, not only caster. Modified iw block algorithim on mob_ai_sub_hard_activesearch

git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@15779 54d463be-8e91-2dee-dedb-b68131a5f0ec

src/map/mob.c

@@ -1016,10 +1016,14 @@ static int mob_ai_sub_hard_activesearch(struct block_list *bl,va_list ap)
 		dist = distance_bl(&md->bl, bl);
 		if(
 			((*target) == NULL || !check_distance_bl(&md->bl, *target, dist)) &&
-			battle_check_range(&md->bl,bl,md->db->range2) && ( map[bl->m].icewall_num && (
-			check_distance_bl(&md->bl, bl, status_get_range(&md->bl) ) ||
-			path_search_long(NULL,bl->m,md->bl.x,md->bl.y,bl->x,bl->y,CELL_CHKICEWALL) ) )
+			battle_check_range(&md->bl,bl,md->db->range2)
 		) { //Pick closest target?
+			if( map[bl->m].icewall_num &&
+				!path_search_long(NULL,bl->m,md->bl.x,md->bl.y,bl->x,bl->y,CELL_CHKICEWALL) ) {
+
+				if( !check_distance_bl(&md->bl, bl, status_get_range(&md->bl) ) )
+					return 0;
+			}
 			(*target) = bl;
 			md->target_id=bl->id;
 			md->min_chase= dist + md->db->range3;

src/map/skill.c

@@ -9389,22 +9389,20 @@ static bool skill_dance_switch(struct skill_unit* unit, int flag)
  * Upon Ice Wall cast it checks all nearby mobs to find any who may be blocked by the IW
  **/
 static int skill_icewall_block(struct block_list *bl,va_list ap) {
-	struct block_list *src;
+	struct block_list *target = NULL;
 	struct mob_data *md = ((TBL_MOB*)bl);
 
 	nullpo_ret(bl);
-
-	src = va_arg(ap,struct block_list *);
-
-	nullpo_ret(src);
 	nullpo_ret(md);
+	if( !md->target_id )
+		return 0;
+	nullpo_ret( ( target = map_id2bl(md->target_id) ) );
 
-	if( md->target_id != src->id
-		|| check_distance_bl(bl, src, status_get_range(bl) )
-		|| path_search_long(NULL,bl->m,bl->x,bl->y,src->x,src->y,CELL_CHKICEWALL) )
+	if( path_search_long(NULL,bl->m,bl->x,bl->y,target->x,target->y,CELL_CHKICEWALL) )
 		return 0;
 
-	mob_unlocktarget(md,gettick());
+	if( !check_distance_bl(bl, target, status_get_range(bl) ) )
+		mob_unlocktarget(md,gettick());
 
 	return 0;
 }
@@ -9820,8 +9818,8 @@ struct skill_unit_group* skill_unitsetting (struct block_list *src, short skilli
 
 	//success, unit created.
 	switch( skillid ) {
-		case WZ_ICEWALL: //Store number of tiles.
-			map_foreachinrange(skill_icewall_block, src, AREA_SIZE, BL_MOB, src);
+		case WZ_ICEWALL:
+			map_foreachinrange(skill_icewall_block, src, AREA_SIZE, BL_MOB);
 			break;
 		case NJ_TATAMIGAESHI: //Store number of tiles.
 			group->val1 = group->alive_count;