public void TryDisconnectLines(StandardLine l1, StandardLine l2, bool undo = true)
{
if (l1 == null || l2 == null)
{
return;
}
Vector2d joint;
if (l1.Position == l2.Position || l1.Position == l2.Position2)
{
joint = l1.Position;
}
else if (l1.Position2 == l2.Position || l1.Position2 == l2.Position2)
{
joint = l1.Position2;
}
else
{
return;
}
//var leftlink = (l1.CompliantPosition == joint && l2.CompliantPosition2 == joint);
var rightlink = (l1.CompliantPosition2 == joint && l2.CompliantPosition == joint);
if (rightlink)
{
l1.Next = null;
l1.RemoveExtension(StandardLine.ExtensionDirection.Right);
l2.Prev = null;
l2.RemoveExtension(StandardLine.ExtensionDirection.Left);
if (undo)
{
UndoManager.AddExtensionChange(l1, l2, false);
}
}
else
{
l1.Prev = null;
l1.RemoveExtension(StandardLine.ExtensionDirection.Left);
l2.Next = null;
l2.RemoveExtension(StandardLine.ExtensionDirection.Right);
if (undo)
{
UndoManager.AddExtensionChange(l2, l1, false);
}
}
}
public void SelectLine(Vector2d pos)
{
_started = true;
var gamepos = MouseCoordsToGame(pos);
var ssnap = Snap(gamepos);
var snap = ssnap as StandardLine;
var keyboard = Keyboard.GetState();
if (snap == null)
{
if (ssnap == null)
{
_started = false;
return;
}
else//scenery
{
if ((ssnap.Position - gamepos).Length < (ssnap.Position2 - gamepos).Length)
{
_joint = Joint.Left;
_startPos = ssnap.Position;
}
else
{
_joint = Joint.Right;
_startPos = ssnap.Position2;
}
_snappedline = Snap(_startPos, ssnap);
if (_snappedline is StandardLine)
{
_snappedline = null;
}
_nonphysicalline = ssnap;
_originalPos1 = _nonphysicalline.Position;
_originalPos2 = _nonphysicalline.Position2;
UpdateTooltip();
game.Invalidate();
if (keyboard[Key.ControlLeft] || keyboard[Key.ControlRight])
{
_joint = Joint.Both;
_snappedline = null;
}
return;
}
}
if (keyboard[Key.AltLeft] || keyboard[Key.AltRight])
{
if (game.Track.Animating)
{
game.Track.EnterPlayback();
{
if (!DoLifelock())
{
LifeLock = true;
}
else
{
_started = false;
game.Track.ExitPlayback();
return;
}
game.Track.ExitPlayback();
}
}
}
if ((snap.Position - gamepos).Length < (snap.Position2 - gamepos).Length)
{
_joint = Joint.Left;
_startPos = snap.Position;
}
else
{
_joint = Joint.Right;
_startPos = snap.Position2;
}
_snappedline = Snap(_startPos, ssnap);
if (!(_snappedline is StandardLine))
{
_snappedline = null;
}
else
{
if ((_snappedline.Position - _startPos).Length < (_snappedline.Position2 - _startPos).Length)
{
_snapjoint = Joint.Left;
}
else
{
_snapjoint = Joint.Right;
}
_snaporiginalpos1 = _snappedline.Position;
_snaporiginalpos2 = _snappedline.Position2;
}
if (keyboard[Key.ControlLeft] || keyboard[Key.ControlRight])
{
_joint = Joint.Both;
_snappedline = null;
}
_line = snap;
UpdateTooltip();
_originalPos1 = _line.CompliantPosition;
_originalPos2 = _line.CompliantPosition2;
if (_line.Prev != null)
{
_prev = _line.Prev;
_line.Prev.Next = null;
_line.Prev.RemoveExtension(StandardLine.ExtensionDirection.Right);
_line.RemoveExtension(StandardLine.ExtensionDirection.Left);
_line.Prev = null;
}
else
{
_prev = null;
}
if (_line.Next != null)
{
_next = _line.Next;
_line.Next.Prev = null;
_line.Next.RemoveExtension(StandardLine.ExtensionDirection.Left);
_line.RemoveExtension(StandardLine.ExtensionDirection.Right);
_line.Next = null;
}
else
{
_next = null;
}
_snext = null;
_sprev = null;
if (_snappedline is StandardLine)
{
var snl = _snappedline as StandardLine;
if (snl.Next != null)
{
_snext = snl.Next;
snl.Next.Prev = null;
snl.Next.RemoveExtension(StandardLine.ExtensionDirection.Left);
snl.RemoveExtension(StandardLine.ExtensionDirection.Right);
snl.Next = null;
}
if (snl.Prev != null)
{
_sprev = snl.Prev;
snl.Prev.Next = null;
snl.Prev.RemoveExtension(StandardLine.ExtensionDirection.Right);
snl.RemoveExtension(StandardLine.ExtensionDirection.Left);
snl.Prev = null;
}
}
game.Track.ChangeMade(_originalPos1, _originalPos2);
game.Invalidate();
}