public override void Paint(GridLayout grid, GameObject layer, Vector3Int position)
{
Tilemap tm = BrushUtility
.GetLayer(layerName)
.GetComponent <Tilemap>();
Killer killer = tm.gameObject.GetComponent <Killer>() ?? layer.AddComponent <Killer>();
killer.SetOnKilledEvent(onKilledEvent);
killer.SetLayerMask(killerMask);
tm.SetTile(position, tile);
}