IPhysicsBody IPhysicsBody.ImpulsePass(Vector2 gravity, float deltaT)
{
WorldPoint secOrigin = new WorldPoint(Position.Sector, Vector2.Zero);
Vector2 f = Forces + gravity;
Vector2 a = GetAccel(f, Mass);
Vector2 p = Position.PixelDistance(secOrigin);
Vector2 newP = GetNewPosition(p, a, Velocity, deltaT);
Vector2 newVelocity = GetNewVelocity(a, Velocity, deltaT);
WorldPoint newPosition = secOrigin.PixelTranslate(newP);
return(new RigidBody(this, position: newPosition, velocity: newVelocity, forces: Vector2.Zero));
}
internal SoundSource UpdateInstances(WorldPoint listenerPos, Core.Audio.Mixer.Channels.State channelState)
{
List <SoundInstance> newInstances = new List <SoundInstance>();
foreach (SoundInstance instc in SoundInstances)
{
SoundInstance newInstc = instc.Update(channelState.Channels[instc.Channel]);
if (newInstc.Progress < 1)
{
Vector2 newOffset = Position.PixelDistance(listenerPos);
newInstc = newInstc.Reposition(newOffset);
newInstances.Add(newInstc);
}
}
return(new SoundSource(Position, newInstances));
}
/// <summary>
/// Converts the given world-space position to a viewport-space position.
/// </summary>
/// <param name="position">The position to convert.</param>
/// <returns>A <see cref="ScreenPoint"/> in viewport-space.</returns>
public ScreenPoint WorldToViewportPosition(WorldPoint position)
{
return((ScreenPoint)(position.PixelDistance(this.Position)));
}