/// <summary>
/// Gets the bounding box for this entity at the specified GameTime and using the specified
/// Tile Width and Height (In Pixels). The result of this method will be returned in pixel units
/// and will change from one GameTime instance to another depending on the contents of the entities
/// Drawables. If no drawables are found in the entity, then a rectangle with 0 width and 0 height
/// will be returned.
/// </summary>
/// <param name="gameTime">The Current GameTime.</param>
/// <returns>An FRectangle object specifying the bounding box of this Entity in Pixels.</returns>
public FRectangle GetPxBoundingBox(GameTime gameTime)
{
HashSet <GameDrawableInstance> drawables = Drawables.GetByState(CurrentDrawableState);
if (drawables == null || drawables.Count == 0)
{
return(new FRectangle(Pos.X, Pos.Y, 0, 0));
}
float minX = Int32.MaxValue;
float minY = Int32.MaxValue;
float maxX = Int32.MinValue;
float maxY = Int32.MinValue;
foreach (GameDrawableInstance draw in drawables)
{
Rectangle pxDrawRectangle = draw.GetSourceRectangle(gameTime);
Vector2 drawOrigin = draw.Drawable.Origin;
float pxWidth = pxDrawRectangle.Width * this.ScaleX;
float pxHeight = pxDrawRectangle.Height * this.ScaleY;
float pxFrameX = Pos.X + draw.Offset.X + -1 * drawOrigin.X * pxWidth;
float pxFrameY = Pos.Y + draw.Offset.Y + -1 * drawOrigin.Y * pxHeight;
if (pxFrameX < minX)
{
minX = pxFrameX;
}
if (pxFrameY < minY)
{
minY = pxFrameY;
}
if (pxFrameX + pxDrawRectangle.Width > maxX)
{
maxX = pxFrameX + pxWidth;
}
if (pxFrameY + pxDrawRectangle.Height > maxY)
{
maxY = pxFrameY + pxHeight;
}
}
return(new FRectangle(minX, minY, maxX - minX, maxY - minY));
}
