/// <see cref="RCMapDisplayExtension.RenderEx_i"/>
protected override void RenderEx_i(IUIRenderContext renderContext)
{
if (this.MouseHandler != null &&
this.MouseHandler.ObjectPlacementInfo != null &&
this.lastKnownMousePosition != RCIntVector.Undefined)
{
ObjectPlacementBox placementBox =
this.MouseHandler.ObjectPlacementInfo.View.GetObjectPlacementBox(this.lastKnownMousePosition);
foreach (SpriteRenderInfo spriteToDisplay in placementBox.Sprites)
{
UISprite uiSpriteToDisplay = this.MouseHandler.ObjectPlacementInfo.Sprites[spriteToDisplay.Index];
renderContext.RenderSprite(uiSpriteToDisplay, spriteToDisplay.DisplayCoords, spriteToDisplay.Section);
}
foreach (RCIntRectangle part in placementBox.IllegalParts)
{
renderContext.RenderSprite(this.objectPlacementMaskRed, part.Location);
}
foreach (RCIntRectangle part in placementBox.LegalParts)
{
renderContext.RenderSprite(this.objectPlacementMaskGreen, part.Location);
}
}
}
/// <see cref="IObjectPlacementView.GetObjectPlacementBox"/>
public ObjectPlacementBox GetObjectPlacementBox(RCIntVector position)
{
/// Calculate the top-left quadratic coordinates based on the retrieved object rectangles relative to the quadratic tile at the incoming position.
RCSet <Tuple <RCIntRectangle, SpriteRenderInfo[]> > objRectsRelativeToQuadTileAtPos = this.GetObjectRelativeQuadRectangles();
if (objRectsRelativeToQuadTileAtPos.Count == 0)
{
return(new ObjectPlacementBox
{
Sprites = new List <SpriteRenderInfo>(),
IllegalParts = new List <RCIntRectangle>(),
LegalParts = new List <RCIntRectangle>()
});
}
RCIntVector navCellCoords = this.MapWindowBC.AttachedWindow.WindowToMapCoords(position).Round();
IQuadTile quadTileAtPos = this.Map.GetCell(navCellCoords).ParentQuadTile;
RCIntVector topLeftQuadCoords = quadTileAtPos.MapCoords;
foreach (Tuple <RCIntRectangle, SpriteRenderInfo[]> relativeRect in objRectsRelativeToQuadTileAtPos)
{
RCIntVector rectTopLeftQuadCoords = topLeftQuadCoords + relativeRect.Item1.Location;
if (rectTopLeftQuadCoords.X < topLeftQuadCoords.X && rectTopLeftQuadCoords.Y < topLeftQuadCoords.Y ||
rectTopLeftQuadCoords.X < topLeftQuadCoords.X && rectTopLeftQuadCoords.Y == topLeftQuadCoords.Y ||
rectTopLeftQuadCoords.X == topLeftQuadCoords.X && rectTopLeftQuadCoords.Y < topLeftQuadCoords.Y)
{
topLeftQuadCoords = rectTopLeftQuadCoords;
}
}
/// Calculate the object rectangles relative to the calculated top-left quadratic coordinates.
RCSet <Tuple <RCIntRectangle, SpriteRenderInfo[]> > objRectsRelativeToTopLeftQuadTile = new RCSet <Tuple <RCIntRectangle, SpriteRenderInfo[]> >();
foreach (Tuple <RCIntRectangle, SpriteRenderInfo[]> relativeRect in objRectsRelativeToQuadTileAtPos)
{
objRectsRelativeToTopLeftQuadTile.Add(Tuple.Create(
new RCIntRectangle(
relativeRect.Item1.Location + quadTileAtPos.MapCoords - topLeftQuadCoords,
relativeRect.Item1.Size),
relativeRect.Item2));
}
/// Get the sprites to be displayed, translate their DisplayCoordinates accordingly from the top-left quadratic tile,
/// and collect the violating quadratic coordinates.
ObjectPlacementBox placementBox = new ObjectPlacementBox
{
Sprites = new List <SpriteRenderInfo>(),
IllegalParts = new List <RCIntRectangle>(),
LegalParts = new List <RCIntRectangle>()
};
RCSet <RCIntVector> violatingQuadCoords = this.CheckObjectConstraints(topLeftQuadCoords);
foreach (Tuple <RCIntRectangle, SpriteRenderInfo[]> relativeRect in objRectsRelativeToTopLeftQuadTile)
{
RCIntVector topLeftDisplayCoords =
this.MapWindowBC.AttachedWindow.QuadToWindowRect(new RCIntRectangle(topLeftQuadCoords + relativeRect.Item1.Location, new RCIntVector(1, 1))).Location;
for (int i = 0; i < relativeRect.Item2.Length; i++)
{
relativeRect.Item2[i].DisplayCoords += topLeftDisplayCoords;
placementBox.Sprites.Add(relativeRect.Item2[i]);
}
for (int x = relativeRect.Item1.Left; x < relativeRect.Item1.Right; x++)
{
for (int y = relativeRect.Item1.Top; y < relativeRect.Item1.Bottom; y++)
{
RCIntVector relativeQuadCoords = new RCIntVector(x, y);
RCIntVector absQuadCoords = topLeftQuadCoords + relativeQuadCoords;
RCIntRectangle partRect =
this.MapWindowBC.AttachedWindow.QuadToWindowRect(new RCIntRectangle(absQuadCoords, new RCIntVector(1, 1)));
if (violatingQuadCoords.Contains(relativeQuadCoords))
{
placementBox.IllegalParts.Add(partRect);
}
else
{
placementBox.LegalParts.Add(partRect);
}
}
}
}
return(placementBox);
}
