public Viewport(int x, int y, Element target, int width, int height)
{
this.X = x;
this.Y = y;
this.TrackTarget = target;
this.Width = width;
this.Height = height;
}
private static GameScreen FindGameScreenForElement(GameScreen gameScreen, Element e)
{
var level = gameScreen;
if (level.Elements.Contains(e))
return level;
foreach (GameScreen gs in gameScreen.Children)
{
var result = FindGameScreenForElement(gs, e);
if (result != null)
{
return result;
}
}
return null;
}
private static void RemoveScreenElement(Element element)
{
var screen = FindGameScreenForElement(ExGame.GameRef.GameScreen, element);
if (screen != null)
{
FindGameScreenForElement(ExGame.GameRef.GameScreen, element).Elements.Remove(element);
}
}
public static bool CheckIntersect(Element a, Rectangle rect)
{
if (a.IsBackgroundElement)
return false;
var ax = a.X;
var ay = a.Y;
var aw = a.Sprite.Width;
var ah = a.Sprite.Height;
var bx = rect.X;
var by = rect.Y;
var bw = rect.Width;
var bh = rect.Height;
if (
(ax >= bx && ax <= bx + bw) // top left dot lies within b horizontally
&&
(ay >= by && ay <= by + bh) // top left dot lies within b vertically
)
{
return true;
}
if (
(ax + aw >= bx && ax + aw <= bx + bw) // top right dot lies within b horizontally
&&
(ay >= by && ay <= by + bh) // top right dot lies within b vertically
)
{
return true;
}
if (
(ax + aw >= bx && ax + aw <= bx + bw) // bottom right dot lies within b horizontally
&&
(ay + ah >= by && ay + ah <= by + bh) // bottom right dot lies within b vertically
)
{
return true;
}
if (
(ax >= bx && ax <= bx + bw) // bottom left dot lies within b horizontally
&&
(ay + ah >= by && ay + ah <= by + bh) // bottom left dot lies within b vertically
)
{
return true;
}
// repeat tests in reverse in case a encompasses b
if (
(bx >= ax && bx <= ax + aw) // top left dot lies within a horizontally
&&
(by >= ay && by <= ay + ah) // top left dot lies within a vertically
)
{
return true;
}
if (
(bx + bw >= ax && bx + bw <= ax + aw) // bottom right dot lies within b horizontally
&&
(by + bh >= ay && by + bh <= ay + ah) // bottom right dot lies within b vertically
)
{
return true;
}
if (
(bx + bw >= ax && bx + bw <= ax + aw) // top right dot lies within b horizontally
&&
(by >= ay && by <= ay + ah) // top right dot lies within b vertically
)
{
return true;
}
if (
(bx >= ax && bx <= ax + aw) // bottom left dot lies within b horizontally
&&
(by + bh >= ay && by + bh <= ay + ah) // bottom left dot lies within b vertically
)
{
return true;
}
return false;
}
public static List<Element> GetIntersections(Element a, List<Type> types)
{
List<Element> IntersectionList = new List<Element>();
foreach (Element e in GetScreenElements().Where(c => types.Contains(c.GetType())))
{
if (CheckIntersect(a, e))
IntersectionList.Add(e);
}
return IntersectionList;
}
public static List<Element> GetIntersections(Element a, List<Element> elements)
{
List<Element> IntersectionList = new List<Element>();
foreach (Element e in elements)
{
if (CheckIntersect(a, e))
IntersectionList.Add(e);
}
return IntersectionList;
}
public static List<Element> GetIntersections(Element a)
{
List<Element> IntersectionList = new List<Element>();
foreach (Element e in GetScreenElements().Where(c => !c.Equals(a)))
{
if (CheckIntersect(a, e))
IntersectionList.Add(e);
}
return IntersectionList;
}
public static bool CheckIntersect(Element a, Element b)
{
return CheckIntersect(a, new Rectangle(b.X, b.Y, b.Sprite.Width, b.Sprite.Height));
}