private void UpdateItemInHand(KeyboardState state)
{
if (state.IsKeyDown(Keys.I))
{
inHand = new SampleCube(Vector3.Zero);
}
if (inHand != null)
{
Matrix matrix = Matrix.CreateRotationX(-target.Y)*Matrix.CreateRotationY(-target.X)
* Matrix.CreateTranslation(new Vector3(Position.X, Position.Y + 2, Position.Z));
inHand.Position = Vector3.Transform(new Vector3(0.25f, -0.18f - clickingCount / 170f, -0.5f - clickingCount / 40f), matrix);
inHand.RotationY = -target.X;
inHand.RotationX = -target.Y - clickingCount / 70f;
inHand.Scale = 0.2f;
}
}
/// <summary>
/// Funkcja sprawdzająca, który klocek został kliknięty.
/// </summary>
/// <param name="x"></param>
/// <param name="y"></param>
/// <param name="objects"></param>
/// <param name="graphics"></param>
private Object3D CheckClickedModel(Object3D[] objects)
{
Vector3 nearsource = new Vector3(game.GraphicsDevice.Viewport.Width / 2, game.GraphicsDevice.Viewport.Height / 2, 0f);
Vector3 farsource = new Vector3(game.GraphicsDevice.Viewport.Width / 2, game.GraphicsDevice.Viewport.Height / 2, 1f);
Vector3 nearPoint = game.GraphicsDevice.Viewport.Unproject(nearsource,
fppCamera.Projection, fppCamera.View,Matrix.CreateTranslation(0, 0, 0));
Vector3 farPoint = game.GraphicsDevice.Viewport.Unproject(farsource,
fppCamera.Projection, fppCamera.View, Matrix.CreateTranslation(0, 0, 0));
Vector3 direction = farPoint - nearPoint;
direction.Normalize();
Ray pickRay = new Ray(nearPoint, direction);
float selectedDistance = 2.5f;
int selectedIndex = -1;
for (int i = 0; i < objects.Length; i++)
{
if (objects[i].Exists)
{
float? result = pickRay.Intersects(objects[i].BBox);
if (result.HasValue)
{
if (result.Value < selectedDistance)
{
selectedIndex = i;
selectedDistance = result.Value;
}
}
}
}
if (selectedIndex > -1)
{
return objects[selectedIndex];
}
return null;
}