public void convertToArcher(NPC target)
{
var npc = new Archer ();
npc.name = "converted archer";
npc.hp += target.hp;
npc.maxHp += target.maxHp;
npc.mp += target.mp;
npc.maxMp += target.maxMp;
npc.position = target.position;
Game.removeNPC (target);
target.killNPC ();
Board.tiles [npc.position].npc = npc;
messiah.party.addNPC (npc);
messiah.party.p.removeArcherResource ();
Game.addNPC (npc);
}