public void PickUp()
{
if (_pickableObject != null)
{
IPickable pickable = _pickableObject.GetComponent <IPickable>();
switch (pickable.GetPickableType())
{
case PickableType.Weapon:
EquipWeapon();
break;
case PickableType.Key:
PickUpKey();
break;
}
pickable.Picked(gameObject);
}
}
public override void Update(GameTime gameTime)
{
// Unproject the screen space mouse coordinate into model space
// coordinates. Because the world space matrix is identity, this
// gives the coordinates in world space.
var vp = GearsetResources.Game.GraphicsDevice.Viewport;
// Note the order of the parameters! Projection first.
var pos1 = vp.Unproject(new Vector3(GearsetResources.Mouse.Position, 0), GearsetResources.Projection, GearsetResources.View, Matrix.Identity);
var pos2 = vp.Unproject(new Vector3(GearsetResources.Mouse.Position, 1), GearsetResources.Projection, GearsetResources.View, Matrix.Identity);
var dir = Vector3.Normalize(pos2 - pos1);
// Cast a ray and check if we've hit anything
IPickable closestPickable = null;
float? distanceToClosest = null;
var ray = new Ray(pos1, dir);
foreach (var pickable in _pickables)
{
var dist = new float?();
if (pickable is IPickable <BoundingBox> )
{
var p = pickable as IPickable <BoundingBox>;
var v = p.PickableVolume;
ray.Intersects(ref v, out dist);
}
else if (pickable is IPickable <BoundingSphere> )
{
var p = pickable as IPickable <BoundingSphere>;
var v = p.PickableVolume;
ray.Intersects(ref v, out dist);
}
else if (pickable is IPickable <Plane> )
{
var p = pickable as IPickable <Plane>;
var v = p.PickableVolume;
ray.Intersects(ref v, out dist);
}
else if (pickable is IPickable <Rectangle> )
{
var p = pickable as IPickable <Rectangle>;
if (p.PickableVolume.Contains(new Point((int)GearsetResources.Mouse.Position.X, (int)GearsetResources.Mouse.Position.Y)))
{
dist = 0;
}
}
if (dist.HasValue && (!distanceToClosest.HasValue || dist.Value < distanceToClosest) && _selectedObject != pickable)
{
distanceToClosest = dist.Value;
closestPickable = pickable;
}
}
// Check if we actually hit something
if (distanceToClosest.HasValue)
{
_hoveringObject = closestPickable;
if (GearsetResources.Mouse.IsLeftJustDown())
{
Picked = closestPickable;
// Let the object know that it has been picked.
Picked.Picked();
_selectedObject = Picked;
}
}
else
{
_hoveringObject = null;
}
}