private PointAxial?handleEdges(PointAxial ip, Direction dir, bool?isPositive)
{
if (_file.Grid.Size == 1)
{
return(new PointAxial(0, 0));
}
if (ip.InGrid(_file.Grid.Size))
{
return(ip);
}
var x = ip.Q;
var z = ip.R;
var y = -x - z;
var xBigger = Math.Abs(x) >= _file.Grid.Size;
var yBigger = Math.Abs(y) >= _file.Grid.Size;
var zBigger = Math.Abs(z) >= _file.Grid.Size;
// Move the pointer back to the hex near the edge
ip -= dir.Vector;
// If two values are still in range, we are wrapping around an edge (not a corner).
if (!xBigger && !yBigger)
{
return(new PointAxial(ip.Q + ip.R, -ip.R));
}
else if (!yBigger && !zBigger)
{
return(new PointAxial(-ip.Q, ip.Q + ip.R));
}
else if (!zBigger && !xBigger)
{
return(new PointAxial(-ip.R, -ip.Q));
}
// If two values are out of range, we navigated into a corner.
if (isPositive == null)
{
return(null);
}
// We teleport to a location that depends on the current memory value.
if ((!xBigger && !isPositive.Value) || (!yBigger && isPositive.Value))
{
return(new PointAxial(ip.Q + ip.R, -ip.R));
}
else if ((!yBigger && !isPositive.Value) || (!zBigger && isPositive.Value))
{
return(new PointAxial(-ip.Q, ip.Q + ip.R));
}
else if ((!zBigger && !isPositive.Value) || (!xBigger && isPositive.Value))
{
return(new PointAxial(-ip.R, -ip.Q));
}
// This should never be reached
throw new InvalidOperationException();
}
public PointAxial?FromScreen(int x, int y)
{
var r = (y - YPadding) / (double)YTextSpacing - (Grid.Size - 1);
var q = ((x - XPadding) / (double)XTextSpacing - r) / 2 - (Grid.Size - 1);
var result = new PointAxial((int)Math.Round(q), (int)Math.Round(r));
return(result.InGrid(Grid.Size) ? result : (PointAxial?)null);
}
private void lstKeyDown(object sender, KeyEventArgs e)
{
if (_lastRendering == null)
{
return;
}
switch (e.KeyCode)
{
case Keys.Left:
if (leftHeld) // allow holding a key to repeat
{
heldUsed = true;
moveSelection(Direction.West);
}
else
{
leftHeld = true;
heldUsed = false;
}
e.Handled = true;
break;
case Keys.Right:
if (rightHeld) // allow holding a key to repeat
{
heldUsed = true;
moveSelection(Direction.East);
}
else
{
rightHeld = true;
heldUsed = false;
}
e.Handled = true;
break;
case Keys.Up:
if (leftHeld)
{
heldUsed = true;
moveSelection(Direction.NorthWest);
}
else if (rightHeld)
{
heldUsed = true;
moveSelection(Direction.NorthEast);
}
else
{
return; // default handle (change list selection)
}
e.Handled = true;
break;
case Keys.Down:
if (leftHeld)
{
heldUsed = true;
moveSelection(Direction.SouthWest);
}
else if (rightHeld)
{
heldUsed = true;
moveSelection(Direction.SouthEast);
}
else
{
return;
}
e.Handled = true;
break;
case Keys.Enter:
editPath();
return;
case Keys.Insert:
startPath();
return;
case Keys.Home:
setStartPos();
return;
case Keys.OemOpenBrackets:
if (e.Control && _file.Grid.Size > 1)
{
_file.Grid = _file.Grid.resize(_file.Grid.Size - 1);
if (!_selection.InGrid(_file.Grid.Size))
{
_selection = new PointAxial(0, 0);
}
rerender();
_anyChanges = true;
}
break;
case Keys.OemCloseBrackets:
if (e.Control)
{
_file.Grid = _file.Grid.resize(_file.Grid.Size + 1);
rerender();
_anyChanges = true;
}
break;
case Keys.Escape:
toggleCursor();
break;
default:
return;
}
}