/// <summary>
/// Gibt die am nächsten liegende (vom Mauszeiger überlagerte) GameObject-Instanz inkl. der genauen Mausposition auf dem Objekt zurück
/// </summary>
/// <typeparam name="T">Beliebige Unterklasse von GameObject</typeparam>
/// <param name="ms">Aktueller Mausstatus</param>
/// <param name="intersectionPoint">Punkt, an dem der Mauszeiger auf das Objekt trifft</param>
/// <param name="offsetX">optionale Verschiebung des Cursors auf der X-Achse in Pixeln (Standard: 0)</param>
/// <param name="offsetY">optionale Verschiebung des Cursors auf der X-Achse in Pixeln (Standard: 0)</param>
/// <param name="precision">Präzision der Messung (Standard: Box für genauere Messung)</param>
/// <returns>Die GameObject-Instanz, die der Kamera am nächsten ist</returns>
public static T IsMouseCursorOnAny <T>(MouseState ms, out Vector3 intersectionPoint, int offsetX = 0, int offsetY = 0, MouseIntersectionPrecision precision = MouseIntersectionPrecision.Box) where T : GameObject
{
intersectionPoint = Vector3.Zero;
GameObject[] list = KWEngine.CurrentWorld._gameObjects.FindAll(go => go is T).ToArray();
if (list.Length == 0)
{
return(null);
}
Vector2 mc = HelperGeneral.GetNormalizedMouseCoords(ms.X + offsetX, ms.Y + offsetY);
Vector3 worldRay = KWEngine.CurrentWindow.Get3DMouseCoords(mc.X, mc.Y);
Vector3 origin;
if (KWEngine.CurrentWorld != null && KWEngine.CurrentWorld.IsFirstPersonMode)
{
if (KWEngine.Projection == ProjectionType.Perspective)
{
origin = KWEngine.CurrentWorld.GetFirstPersonObject().Position;
origin.Y += KWEngine.CurrentWorld.GetFirstPersonObject().FPSEyeOffset;
}
else
{
origin = HelperGeneral.GetRayOriginForOrthographicProjection(mc);
}
}
else
{
if (KWEngine.Projection == ProjectionType.Perspective)
{
origin = KWEngine.CurrentWorld.GetCameraPosition();
}
else
{
origin = HelperGeneral.GetRayOriginForOrthographicProjection(mc);
}
}
float minDistance = float.MaxValue;
int minIndex = -1;
for (int i = 0; i < list.Length; i++)
{
bool rayHitGameObject = GetRayIntersectionPointOnHitbox(list[i], origin, worldRay, out Vector3 iPoint, precision);
if (rayHitGameObject)
{
float currentDistance = (origin - iPoint).LengthSquared;
if (currentDistance < minDistance)
{
intersectionPoint = iPoint;
minDistance = currentDistance;
minIndex = i;
}
}
}
if (minIndex >= 0)
{
return(list[minIndex] as T);
}
return(null);
}
/// <summary>
/// Gibt eine Liste von GameObject-Instanzen zurück, die unter dem Mauszeiger liegen (Instanzen müssen mit IsPickable = true gesetzt haben)
/// </summary>
/// <param name="ms">Mausinformationen</param>
/// <param name="offsetX">optionale Verschiebung des Cursors auf der X-Achse in Pixeln (Standard: 0)</param>
/// <param name="offsetY">optionale Verschiebung des Cursors auf der X-Achse in Pixeln (Standard: 0)</param>
/// <returns>Liste betroffener GameObject-Instanzen</returns>
public static List <GameObject> PickGameObjects(MouseState ms, int offsetX = 0, int offsetY = 0)
{
List <GameObject> pickedObjects = new List <GameObject>();
GLWindow w = GLWindow.CurrentWindow;
if (w == null || w.CurrentWorld == null || !w.Focused)
{
return(pickedObjects);
}
Vector2 mouseCoords = HelperGeneral.GetNormalizedMouseCoords(ms.X + offsetX, ms.Y + offsetY);
Vector3 ray = KWEngine.CurrentWindow.Get3DMouseCoords(mouseCoords.X, mouseCoords.Y);
Vector3 pos;
if (KWEngine.Projection == ProjectionType.Perspective)
{
pos = w.CurrentWorld.GetCameraPosition() + ray;
}
else
{
pos = HelperGeneral.GetRayOriginForOrthographicProjection(mouseCoords) + ray;
}
foreach (GameObject go in w.CurrentWorld.GetGameObjects())
{
if (go.IsPickable && go.IsInsideScreenSpace)
{
if (GameObject.IntersectRaySphere(pos, ray, go.GetCenterPointForAllHitboxes(), go.GetMaxDiameter() / 2))
{
pickedObjects.Add(go);
}
}
}
return(pickedObjects);
}
/// <summary>
/// Konvertiert 2D-Mauskoordinaten in 3D-Koordinaten
/// </summary>
/// <param name="ms">Mausinformationen</param>
/// <param name="planeNormal">Kollisionsebene (Standard: Camera)</param>
/// <param name="planeHeight">Höhe der Kollisionsebene</param>
/// <param name="offsetX">(optionale) Seitenkorrektur in Pixeln</param>
/// <param name="offsetY">(optionale) Höhenkorrektur in Pixeln</param>
/// <returns>3D-Mauskoordinaten</returns>
public static Vector3 GetMouseIntersectionPoint(MouseState ms, Plane planeNormal, float planeHeight, int offsetX = 0, int offsetY = 0)
{
Vector3 normal;
if (planeNormal == Plane.Y)
{
normal = new Vector3(0, 1, 0.000001f);
}
else if (planeNormal == Plane.X)
{
normal = new Vector3(1, 0, 0);
}
else if (planeNormal == Plane.Z)
{
normal = new Vector3(0, 0.000001f, 1);
}
else
{
if (KWEngine.CurrentWorld != null)
{
normal = -KWEngine.CurrentWorld.GetCameraLookAtVector();
}
else
{
normal = new Vector3(0, 1, 0.000001f);
}
}
Vector2 mc = HelperGeneral.GetNormalizedMouseCoords(ms.X + offsetX, ms.Y + offsetY);
Vector3 worldRay = KWEngine.CurrentWindow.Get3DMouseCoords(mc.X, mc.Y);
bool result;
Vector3 intersection;
if (KWEngine.Projection == ProjectionType.Perspective)
{
result = GameObject.LinePlaneIntersection(out intersection, worldRay, KWEngine.CurrentWindow.CurrentWorld.GetCameraPosition(), normal, normal * planeHeight);
}
else
{
Vector3 rayOrigin = HelperGeneral.GetRayOriginForOrthographicProjection(mc);
result = GameObject.LinePlaneIntersection(out intersection, worldRay, rayOrigin, normal, normal * planeHeight);
}
if (result)
{
return(intersection);
}
else
{
return(normal * planeHeight);
}
}
/// <summary>
/// Gibt das GameObject zurück, das unter dem Mauszeiger liegt (Instanzen müssen mit IsPickable = true gesetzt haben)
/// </summary>
/// <param name="ms">Mausinformationen</param>
/// <param name="offsetX">optionale Verschiebung des Cursors auf der X-Achse in Pixeln (Standard: 0)</param>
/// <param name="offsetY">optionale Verschiebung des Cursors auf der X-Achse in Pixeln (Standard: 0)</param>
/// <returns>Gewähltes GameObject</returns>
public static GameObject PickGameObject(MouseState ms, int offsetX = 0, int offsetY = 0)
{
GLWindow w = GLWindow.CurrentWindow;
if (w == null || w.CurrentWorld == null || !w.Focused)
{
return(null);
}
Vector2 mouseCoords = HelperGeneral.GetNormalizedMouseCoords(ms.X + offsetX, ms.Y + offsetY);
Vector3 ray = KWEngine.CurrentWindow.Get3DMouseCoords(mouseCoords.X, mouseCoords.Y);
Vector3 pos;
if (KWEngine.Projection == ProjectionType.Perspective)
{
pos = w.CurrentWorld.GetCameraPosition() + ray;
}
else
{
pos = HelperGeneral.GetRayOriginForOrthographicProjection(mouseCoords) + ray;
}
GameObject pickedObject = null;
float pickedDistance = float.MaxValue;
foreach (GameObject go in w.CurrentWorld.GetGameObjects())
{
if (go.IsPickable && go.IsInsideScreenSpace)
{
if (GameObject.IntersectRaySphere(pos, ray, go.GetCenterPointForAllHitboxes(), go.GetMaxDiameter() / 2))
{
float distance = (go.GetCenterPointForAllHitboxes() - pos).LengthSquared;
if (distance < pickedDistance)
{
pickedDistance = distance;
pickedObject = go;
}
}
}
}
return(pickedObject);
}
/// <summary>
/// Erfragt, ob der Mauszeiger (näherungsweise) auf dem Objekt liegt
/// </summary>
/// <param name="g">Zu untersuchendes GameObject</param>
/// <param name="ms">Mausinformationen</param>
/// <param name="offsetX">optionale Verschiebung des Cursors auf der X-Achse in Pixeln (Standard: 0)</param>
/// <param name="offsetY">optionale Verschiebung des Cursors auf der X-Achse in Pixeln (Standard: 0)</param>
/// <param name="precision">Genauigkeit der Prüfung (Standard: Box für eine genauere Prüfung)</param>
/// <returns>true, wenn der Mauszeiger auf dem Objekt liegt</returns>
public static bool IsMouseCursorInsideHitbox(GameObject g, MouseState ms, int offsetX = 0, int offsetY = 0, MouseIntersectionPrecision precision = MouseIntersectionPrecision.Box)
{
Vector2 mc = HelperGeneral.GetNormalizedMouseCoords(ms.X + offsetX, ms.Y + offsetY);
Vector3 worldRay = KWEngine.CurrentWindow.Get3DMouseCoords(mc.X, mc.Y);
Vector3 normal;
bool result;
Vector3 intersection;
if (KWEngine.CurrentWindow.CurrentWorld != null && KWEngine.CurrentWindow.CurrentWorld.IsFirstPersonMode)
{
normal = HelperCamera.GetLookAtVector();
normal.Y += 0.000001f;
normal.Z += 0.000001f;
if (KWEngine.Projection == ProjectionType.Perspective)
{
Vector3 fpPos = KWEngine.CurrentWindow.CurrentWorld.GetFirstPersonObject().Position;
fpPos.Y += KWEngine.CurrentWindow.CurrentWorld.GetFirstPersonObject().FPSEyeOffset;
result = GameObject.LinePlaneIntersection(out intersection, worldRay, fpPos, normal, g.GetCenterPointForAllHitboxes());
}
else
{
Vector3 fpPos = HelperGeneral.GetRayOriginForOrthographicProjection(mc);
result = GameObject.LinePlaneIntersection(out intersection, worldRay, fpPos, normal, g.GetCenterPointForAllHitboxes());
}
}
else
{
normal = -KWEngine.CurrentWindow.CurrentWorld.GetCameraLookAtVector();
normal.Y += 0.000001f;
normal.Z += 0.000001f;
if (KWEngine.Projection == ProjectionType.Perspective)
{
result = GameObject.LinePlaneIntersection(out intersection, worldRay, KWEngine.CurrentWindow.CurrentWorld.GetCameraPosition(), normal, g.GetCenterPointForAllHitboxes());
}
else
{
Vector3 rayOrigin = HelperGeneral.GetRayOriginForOrthographicProjection(mc);
result = GameObject.LinePlaneIntersection(out intersection, worldRay, rayOrigin, normal, g.GetCenterPointForAllHitboxes());
}
}
if (result)
{
foreach (Hitbox hb in g.Hitboxes)
{
if (precision == MouseIntersectionPrecision.Box)
{
if (IsPointInsideBox(ref intersection, hb))
{
return(true);
}
}
else
{
if (IsPointInsideSphere(ref intersection, hb.GetCenter(), hb.DiameterAveraged))
{
return(true);
}
}
}
return(false);
}
else
{
return(false);
}
}
