> Follow-up to r17048:

* 'npcskill' now uses AREA_SIZE as maximum distance rather than using skill distance. (bugreport:7069)

git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@17068 54d463be-8e91-2dee-dedb-b68131a5f0ec

src/map/unit.c

@@ -1017,7 +1017,7 @@ int unit_skilluse_id2(struct block_list *src, int target_id, uint16 skill_id, ui
 	struct map_session_data *sd = NULL;
 	struct block_list * target = NULL;
 	unsigned int tick = gettick();
-	int temp = 0;
+	int temp = 0, range;
 
 	nullpo_ret(src);
 	if(status_isdead(src))
@@ -1169,16 +1169,21 @@ int unit_skilluse_id2(struct block_list *src, int target_id, uint16 skill_id, ui
 					return 0;
 		}
 
+	if (src->type == BL_NPC) // NPC-objects can override cast distance
+		range = AREA_SIZE; // Maximum visible distance before NPC goes out of sight
+	else
+		range = skill_get_range2(src, skill_id, skill_lv); // Skill cast distance from database
+
 	//Check range when not using skill on yourself or is a combo-skill during attack
 	//(these are supposed to always have the same range as your attack)
 	if( src->id != target_id && (!temp || ud->attacktimer == INVALID_TIMER) ) {
 		if( skill_get_state(ud->skill_id) == ST_MOVE_ENABLE ) {
-			if( !unit_can_reach_bl(src, target, skill_get_range2(src, skill_id,skill_lv) + 1, 1, NULL, NULL) )
+			if( !unit_can_reach_bl(src, target, range + 1, 1, NULL, NULL) )
 				return 0; // Walk-path check failed.
 		} else if( src->type == BL_MER && skill_id == MA_REMOVETRAP ) {
-			if( !battle_check_range(battle_get_master(src), target, skill_get_range2(src, skill_id, skill_lv) + 1) )
+			if( !battle_check_range(battle_get_master(src), target, range + 1) )
 				return 0; // Aegis calc remove trap based on Master position, ignoring mercenary O.O
-		} else if( !battle_check_range(src, target, skill_get_range2(src, skill_id,skill_lv) + (skill_id == RG_CLOSECONFINE?0:2)) ) {
+		} else if( !battle_check_range(src, target, range + (skill_id == RG_CLOSECONFINE?0:2)) ) {
 			return 0; // Arrow-path check failed.
 		}
 	}
@@ -1379,6 +1384,7 @@ int unit_skilluse_pos2( struct block_list *src, short skill_x, short skill_y, ui
 	struct status_change *sc;
 	struct block_list    bl;
 	unsigned int tick = gettick();
+	int range;
 
 	nullpo_ret(src);
 
@@ -1425,12 +1431,17 @@ int unit_skilluse_pos2( struct block_list *src, short skill_x, short skill_y, ui
 	bl.x = skill_x;
 	bl.y = skill_y;
 
+	if (src->type == BL_NPC) // NPC-objects can override cast distance
+		range = AREA_SIZE; // Maximum visible distance before NPC goes out of sight
+	else
+		range = skill_get_range2(src, skill_id, skill_lv); // Skill cast distance from database
+
 	if( skill_get_state(ud->skill_id) == ST_MOVE_ENABLE )
 	{
-		if( !unit_can_reach_bl(src, &bl, skill_get_range2(src, skill_id,skill_lv) + 1, 1, NULL, NULL) )
+		if( !unit_can_reach_bl(src, &bl, range + 1, 1, NULL, NULL) )
 			return 0; //Walk-path check failed.
 	}
-	else if( !battle_check_range(src, &bl, skill_get_range2(src, skill_id,skill_lv) + 1) )
+	else if( !battle_check_range(src, &bl, range + 1) )
 		return 0; //Arrow-path check failed.
 
 	unit_stop_attack(src);