public static Npc SpawnNpc(int npcId, LocationHolder location, int respawnDelay)
    {
        NpcHolder   npcHolder = NpcData.GetNpcHolder(npcId);
        SpawnHolder spawn     = new SpawnHolder(location, respawnDelay);
        Npc         npc       = null;

        switch (npcHolder.GetNpcType())
        {
        case NpcType.NPC:
            npc = new Npc(npcHolder, spawn);
            break;

        case NpcType.MONSTER:
            npc = new Monster(npcHolder, spawn);
            break;
        }
        return(npc);
    }