int NewEmptyThing()
{
int thingId = nextThingId++;
theThings[thingId] = new PositionedThing();
return(thingId);
} // Take the return value, remember the Id, and assign Thing & PosFace to theThings[thingId]
protected virtual void OnThingMoved(PositionedThing posThing)
{
var handler = ThingMoved;
if (handler != null)
{
var args = new BoardEventArgs // make a copy of the values
{
ThingId = posThing.Thing.IdOnBoard,
NewPosFace = new PosFace(posThing.PosFace)
};
handler(null, args);
//handler(this, args); // don't need to pass this ?
}
}
private bool TryMoveThing(Pos pos, Pos moveVector, out PositionedThing posThing) //?optional arg for Square
{
posThing = null;
var square0 = SquareAt(pos);
var pos1 = pos + moveVector;
var square1 = SquareAt(pos1);
//Note: we're ignoring the possibility of having squares in between square0 and square1
if (square0 == null || square1 == null || !square1.CanMoveOnToMe())
{
return(false);
}
if (square0.ThingOnMe == null)
{
return(true); // there was nothing to move; call that success
}
posThing = GetPositionedThing(square0.ThingOnMe);
square0.ThingOnMe = null;
square1.ThingOnMe = posThing.Thing;
posThing.PosFace.SetPos(pos1);
return(true);
}
