public static void Apply(GameObject go, Collision collision)
{
var go1 = go;
var go2 = collision.GameObject;
if (collision.Time > 0)
{
go1.Position += go1.Speed * collision.Time;
go2.Position += go2.Speed * collision.Time;
}
// ось столкновения и нормаль к ней
var nrm = collision.Delta + go2.Speed * collision.Time - go1.Speed * collision.Time;
var tan = new Vector2(nrm.Y, -nrm.X);
nrm.Normalize();
tan.Normalize();
// проекция скорости на ось столкновения (нормальная скорость)
float go1nrm = Vector2.Dot(go1.Speed, nrm);
float go2nrm = Vector2.Dot(go2.Speed, nrm);
// перераспределяем импульс между нормальными скоростями в соответствии с массами
float go1rsp = ((go1.Mass - go2.Mass) * go1nrm + 2f * go2.Mass * go2nrm) / (go1.Mass + go2.Mass);
float go2rsp = ((go2.Mass - go1.Mass) * go2nrm + 2f * go1.Mass * go1nrm) / (go1.Mass + go2.Mass);
// проекция скорости на нормаль к оси столкновения (тангенциальная скорость)
float go1tan = Vector2.Dot(go1.Speed, tan);
float go2tan = Vector2.Dot(go2.Speed, tan);
go1.Speed = nrm * go1rsp + tan * go1tan;
go2.Speed = nrm * go2rsp + tan * go2tan;
if (collision.Time > 0)
{
go1.Position -= go1.Speed * collision.Time;
go2.Position -= go2.Speed * collision.Time;
}
//float gp = Maf.Sqrt(collision.DepthSquared);
//go1.Position -= gp * go2.Mass / (go1.Mass + go2.Mass) * nrm;
//go2.Position += gp * go1.Mass / (go1.Mass + go2.Mass) * nrm;
}
public void Follow(GameObject followedObject)
{
_followedObject = followedObject;
}
public Camera(GameObject followedObject)
{
_followedObject = followedObject;
}
public void Add(GameObject gameObject)
{
_gameObjects.Add(gameObject);
}
private void AddObject(GameObject gameObject)
{
if (gameObject.Id == -1)
{
_gameObjects.Add(gameObject);
gameObject.Id = _objectId;
_objectId++;
}
}
public void ReleaseObject(GameObject gameObject)
{
var type = gameObject.GetType();
if (type == typeof(Ship))
ReleaseShip((Ship)gameObject);
else if (type == typeof(EnemyShip))
ReleaseEnemyShip((EnemyShip)gameObject);
else if (type == typeof(Asteroid))
ReleaseAsteroid((Asteroid)gameObject);
else if (type == typeof(SpeedBonus))
ReleaseSpeedBonus((SpeedBonus)gameObject);
else if (type == typeof(Medkit))
ReleaseMedkit((Medkit)gameObject);
else if (type == typeof(PlasmaBullet))
ReleasePlasmaBullet((PlasmaBullet)gameObject);
else if (type == typeof(SinPlasmaBullet))
ReleaseSinPlasmaBullet((SinPlasmaBullet)gameObject);
else if (type == typeof(Rocket))
ReleaseRocket((Rocket)gameObject);
}