private bool IsWalkable(CellGridViewModel cell)
{
return cell.BackgroundBrush.Color != Colors.Gainsboro; // TODO CLEAN this code !!
}
private int GetCost(CellGridViewModel cellGridViewModel, CellGridViewModel gridViewModel)
{
return 1;
}
private IEnumerable<CellGridViewModel> GetNeighbours(CellGridViewModel cellGridViewModel)
{
var y = cellGridViewModel.Y;
var x = cellGridViewModel.X;
if (y > 0 && IsWalkable(Cells[y - 1][x])) yield return Cells[y - 1][x]; // top
if (x < _gridSize.Width-1 && IsWalkable(Cells[y][x + 1])) yield return Cells[y][x+1];// right
if (y < _gridSize.Height-1 && IsWalkable(Cells[y + 1][x])) yield return Cells[y+1][x];// bottom
if (x > 0 && IsWalkable(Cells[y][x - 1])) yield return Cells[y][x-1]; // top
}
private double Heuristic(CellGridViewModel current)
{
double heuristic = Math.Abs(current.X - _endCell.X) + Math.Abs(current.Y - _endCell.Y);
var dx1 = current.X - _endCell.X;
var dy1 = current.Y - _endCell.Y;
var dx2 = _startCell.X - _endCell.X;
var dy2 = _startCell.Y - _endCell.Y;
var cross = Math.Abs(dx1*dy2 - dx2*dy1);
//heuristic += cross*0.05;
return heuristic;
}
private bool IsEnd(CellGridViewModel cellGridViewModel)
{
return cellGridViewModel == _endCell;
}
private void SetEndCell(CellGridViewModel cell)
{
_endCell?.CleanCell();
_endCell = cell;
}
private void SetStartCell(CellGridViewModel cell)
{
_startCell?.CleanCell();
_startCell = cell;
}
private void OnCellClick(CellGridViewModel cell)
{
if (SelectedAction != null)
{
// TODO : add dico for this
if (SelectedAction.Code == 'S') SetStartCell(cell);
if (SelectedAction.Code == 'E') SetEndCell(cell);
cell.BackgroundBrush = SelectedAction.BackgroundBrush;
}
}