public override bool Link(BaseLevel level, out BaseTrack[] results)
{
if (_direction != Direction.None)
{
results = null;
return false;
}
results = level.GetTracksFacing(_position, Direction.East);
bool valid = (results.Length != 0);
if (valid)
_next = results[0];
return valid;
}
public override bool Link(BaseLevel level, out BaseTrack[] results)
{
if (_direction != Direction.None)
{
results = null;
return false;
}
results = targets = level.GetTracksFacing(_position,
Direction.North,
Direction.South);
bool valid = (targets.Length == 2);
if (!valid)
throw new LevelLoadException("This type of switch must have exactly two targets.");
return valid;
}
private void LinkTrack(BaseTrack current, ref List<BaseTrack> visited)
{
if (visited.Contains(current))
return;
BaseTrack[] results;
if(current.Link(this, out results))
{
foreach (BaseTrack result in results)
LinkTrack(result, ref visited);
}
visited.Add(current);
}
private void Move()
{
if (_disposed)
return;
else if(firstTick && !IgnoreTick)
{
firstTick = false;
return;
}
var cur = Current;
var next = Current?.Next;
if (cur == null)
{
_disposed = true;
return;
}
else if(next != null && !next.CanEnter(this))
{
// Quick n' dirty
if (next is SwitchTrack)
return;
if (!next.Collides() && cur.Collides())
throw new GameOverException();
else if (next.Collides())
throw new GameOverException();
}
else if (next != null && next.CanEnter(this))
{
_current.OnLeave();
_current = next;
_current.OnEnter(this);
}
}