void UpdateShroud(ProjectedCellRegion region)
{
foreach (var puv in region)
{
var uv = (MPos)puv;
if (!cellsDirty[uv] || !tileInfos.Contains(uv))
{
continue;
}
cellsDirty[uv] = false;
var tileInfo = tileInfos[uv];
var shroudSprite = GetSprite(shroudSprites, GetEdges(puv, visibleUnderShroud), tileInfo.Variant);
var shroudPos = tileInfo.ScreenPosition;
if (shroudSprite != null)
{
shroudPos += shroudSprite.Offset - 0.5f * shroudSprite.Size;
}
var fogSprite = GetSprite(fogSprites, GetEdges(puv, visibleUnderFog), tileInfo.Variant);
var fogPos = tileInfo.ScreenPosition;
if (fogSprite != null)
{
fogPos += fogSprite.Offset - 0.5f * fogSprite.Size;
}
shroudLayer.Update(uv, shroudSprite, shroudPos);
fogLayer.Update(uv, fogSprite, fogPos);
}
}
public void SetBounds(PPos tl, PPos br)
{
// The tl and br coordinates are inclusive, but the Rectangle
// is exclusive. Pad the right and bottom edges to match.
Bounds = Rectangle.FromLTRB(tl.U, tl.V, br.U + 1, br.V + 1);
// Directly calculate the projected map corners in world units avoiding unnecessary
// conversions. This abuses the definition that the width of the cell is always
// 1024 units, and that the height of two rows is 2048 for classic cells and 1024
// for isometric cells.
var wtop = tl.V * 1024;
var wbottom = (br.V + 1) * 1024;
if (Grid.Type == MapGridType.RectangularIsometric)
{
wtop /= 2;
wbottom /= 2;
}
ProjectedTopLeft = new WPos(tl.U * 1024, wtop, 0);
ProjectedBottomRight = new WPos(br.U * 1024 - 1, wbottom - 1, 0);
ProjectedCellBounds = new ProjectedCellRegion(this, tl, br);
}
