protected override void OnAlphaDataModified(D2dRect rect)
{
base.OnAlphaDataModified(rect);
if (CellSize <= 0)
{
Mark(); Sweep(); return;
}
if (destructible.AlphaWidth != expectedWidth || destructible.AlphaHeight != expectedHeight || cells == null || cells.Length != cellWidth * cellHeight || CellSize != expectedCellSize)
{
Rebuild(); return;
}
var cellXMin = rect.MinX / CellSize;
var cellYMin = rect.MinY / CellSize;
var cellXMax = (rect.MaxX + 1) / CellSize;
var cellYMax = (rect.MaxY + 1) / CellSize;
cellXMin = Mathf.Clamp(cellXMin, 0, cellWidth - 1);
cellXMax = Mathf.Clamp(cellXMax, 0, cellWidth - 1);
cellYMin = Mathf.Clamp(cellYMin, 0, cellHeight - 1);
cellYMax = Mathf.Clamp(cellYMax, 0, cellHeight - 1);
for (var cellY = cellYMin; cellY <= cellYMax; cellY++)
{
var offset = cellY * cellWidth;
for (var cellX = cellXMin; cellX <= cellXMax; cellX++)
{
var index = cellX + offset;
var cell = cells[index];
if (cell != null)
{
cell.Clear(tempColliders);
cells[index] = D2dPolygonColliderCell.Add(cell);
}
RebuildCell(ref cells[index], cellX, cellY);
}
}
Sweep();
}
private void Mark()
{
tempColliders.Clear();
if (cells != null)
{
for (var i = cells.Length - 1; i >= 0; i--)
{
var cell = cells[i];
if (cell != null)
{
cell.Clear(tempColliders);
cells[i] = D2dPolygonColliderCell.Add(cell);
}
}
}
}
