public VMPlacementResult ChangePosition(LotTilePos pos, Direction direction, VMContext context)
{
if (pos.Level > context.Architecture.Stories) return new VMPlacementResult(VMPlacementError.NotAllowedOnFloor);
VMEntity[] OldContainers = new VMEntity[Objects.Count];
short[] OldSlotNum = new short[Objects.Count];
for (int i = 0; i < Objects.Count(); i++)
{
OldContainers[i] = Objects[i].Container;
OldSlotNum[i] = Objects[i].ContainerSlot;
Objects[i].PrePositionChange(context);
}
int Dir = 0;
switch (direction)
{
case Direction.NORTH:
Dir = 0; break;
case Direction.EAST:
Dir = 2; break;
case Direction.SOUTH:
Dir = 4; break;
case Direction.WEST:
Dir = 6; break;
}
Matrix rotMat = Matrix.CreateRotationZ((float)(Dir * Math.PI / 4.0));
VMPlacementResult[] places = new VMPlacementResult[Objects.Count];
var bObj = BaseObject;
var leadOff = new Vector3(((sbyte)(((ushort)bObj.Object.OBJ.SubIndex) >> 8) * 16), ((sbyte)(((ushort)bObj.Object.OBJ.SubIndex) & 0xFF) * 16), 0);
//TODO: optimize so we don't have to recalculate all of this
if (pos != LotTilePos.OUT_OF_WORLD)
{
for (int i = 0; i < Objects.Count(); i++)
{
var sub = Objects[i];
var off = new Vector3((sbyte)(((ushort)sub.Object.OBJ.SubIndex) >> 8) * 16, (sbyte)(((ushort)sub.Object.OBJ.SubIndex) & 0xFF) * 16, 0);
off = Vector3.Transform(off-leadOff, rotMat);
var offPos = new LotTilePos((short)Math.Round(pos.x + off.X), (short)Math.Round(pos.y + off.Y), (sbyte)(pos.Level + sub.Object.OBJ.LevelOffset));
places[i] = sub.PositionValid(offPos, direction, context);
if (places[i].Status != VMPlacementError.Success)
{
//go back to where we started: we're no longer out of world.
for (int j = 0; j < Objects.Count(); j++)
{
//need to restore slot we were in
if (OldContainers[j] != null) {
OldContainers[j].PlaceInSlot(Objects[j], OldSlotNum[j], false, context);
}
Objects[j].PositionChange(context, false);
}
return places[i];
}
}
}
//verification success
for (int i = 0; i < Objects.Count(); i++)
{
var sub = Objects[i];
var off = new Vector3((sbyte)(((ushort)sub.Object.OBJ.SubIndex) >> 8) * 16, (sbyte)(((ushort)sub.Object.OBJ.SubIndex) & 0xFF)*16, 0);
off = Vector3.Transform(off-leadOff, rotMat);
var offPos = (pos==LotTilePos.OUT_OF_WORLD)?
LotTilePos.OUT_OF_WORLD :
new LotTilePos((short)Math.Round(pos.x + off.X), (short)Math.Round(pos.y + off.Y), (sbyte)(pos.Level+sub.Object.OBJ.LevelOffset));
sub.SetIndivPosition(offPos, direction, context, places[i]);
}
for (int i = 0; i < Objects.Count(); i++) Objects[i].PositionChange(context, false);
return new VMPlacementResult(VMPlacementError.Success);
}