public override void Evaluate()
{
float dt = (float)Governor.Rate.TotalSeconds;
if (dt == 0)
{
dt = (float)Time.CurrentTime.Increment.TotalSeconds;
}
float dx = SpeedX * dt;
float dy = SpeedY * dt;
if (dx == 0 && dy == 0)
{
return;
}
var hitPrediction = HitDetection.PredictHit(SpaceTime.CurrentSpaceTime, Element, HitDetectionTypes, dx, dy);
if (hitPrediction.Type != HitType.None)
{
float angle;
if (hitPrediction.ElementHit != null)
{
angle = Element.Center().CalculateAngleTo(hitPrediction.ElementHit.Center());
}
else if (hitPrediction.Direction == Direction.Left)
{
angle = 180;
}
else if (hitPrediction.Direction == Direction.Right)
{
angle = 0;
}
else if (hitPrediction.Direction == Direction.Up)
{
angle = 270;
}
else if (hitPrediction.Direction == Direction.Down)
{
angle = 90;
}
else
{
throw new NotSupportedException($"Unsupported direction: {hitPrediction.Direction}");
}
if (ImpactOccurred != null && haveMovedSinceLastHitDetection)
{
ImpactOccurred.Fire(new Impact()
{
Angle = angle,
Bounds = hitPrediction.BoundsOfItemBeingHit,
ElementHit = hitPrediction.ElementHit
});
}
haveMovedSinceLastHitDetection = false;
var testArea = Rectangular.Create(Element.Left + dx, Element.Top + dy, Element.Width, Element.Height);
if (hitPrediction.Direction == Direction.Down || hitPrediction.Direction == Direction.Up)
{
SpeedY = -SpeedY * Bounciness;
SpeedX = SpeedX * ImpactFriction;
}
else if (hitPrediction.Direction == Direction.Left || hitPrediction.Direction == Direction.Right)
{
SpeedX = -SpeedX * Bounciness;
SpeedY = SpeedY * ImpactFriction;
}
else
{
SpeedX = -SpeedX * Bounciness;
SpeedY = -SpeedY * Bounciness;
}
}
else
{
var oldLocation = Element.CopyBounds();
Element.MoveBy(dx, dy);
this.Angle = oldLocation.Center().CalculateAngleTo(Element.Center());
haveMovedSinceLastHitDetection = true;
}
}
private async Task ExecuteAsync()
{
while (this.Lifetime.IsExpired == false)
{
await Time.CurrentTime.YieldAsync();
if (this.Lifetime.IsExpired)
{
return;
}
if (MovementTakeover != null)
{
await MovementTakeover();
continue;
}
float dt = (float)Time.CurrentTime.Increment.TotalSeconds;
if (dt == 0)
{
dt = (float)Time.CurrentTime.Increment.TotalSeconds;
}
float d = Speed * dt;
if (d == 0)
{
OnVelocityEnforced?.Fire();
continue;
}
HitPrediction hitPrediction = null;
IRectangularF bounds = null;
if (HitDetectionDisabled == false)
{
var obstacles = GetObstacles();
bounds = BoundsTransform != null?BoundsTransform() : Element;
hitPrediction = HitDetection.PredictHit(new HitDetectionOptions()
{
MovingObject = bounds,
Obstacles = obstacles,
Angle = Angle,
Visibility = d,
Mode = CastingMode.Precise,
});
LastPrediction = hitPrediction;
}
if (hitPrediction != null && hitPrediction.Type != HitType.None)
{
var dx = BoundsTransform != null ? bounds.Left - Element.Left : 0;
var dy = BoundsTransform != null ? bounds.Top - Element.Top : 0;
var proposedBounds = BoundsTransform != null?BoundsTransform() : Element;
var distanceToObstacleHit = proposedBounds.CalculateDistanceTo(hitPrediction.ObstacleHit);
if (distanceToObstacleHit > .5f)
{
proposedBounds = proposedBounds.MoveTowards(Angle, distanceToObstacleHit - .5f, false);
Element.MoveTo(proposedBounds.Left - dx, proposedBounds.Top - dy);
haveMovedSinceLastHitDetection = true;
}
float angle = bounds.Center().CalculateAngleTo(hitPrediction.ObstacleHit.Center());
if (haveMovedSinceLastHitDetection)
{
LastImpact = new Impact()
{
Angle = angle,
MovingObject = Element,
ObstacleHit = hitPrediction.ObstacleHit,
HitType = hitPrediction.Type,
};
if (hitPrediction.ObstacleHit is SpacialElement)
{
Velocity.For(hitPrediction.ObstacleHit as SpacialElement)?.ImpactOccurred.Fire(new Impact()
{
Angle = angle.GetOppositeAngle(),
MovingObject = hitPrediction.ObstacleHit as SpacialElement,
ObstacleHit = Element,
HitType = hitPrediction.Type,
});
}
ImpactOccurred?.Fire(LastImpact);
GlobalImpactOccurred.Fire(LastImpact);
haveMovedSinceLastHitDetection = false;
Element.SizeOrPositionChanged.Fire();
}
if (Bounce)
{
var side = Geometry.GetSideGivenEdgeIndex(hitPrediction.EdgeIndex);
if (side == Side.Top || side == Side.Bottom)
{
Angle = 0.AddToAngle(-Angle);
}
else
{
Angle = 180.AddToAngle(-Angle);
}
}
else
{
Stop();
}
}
else
{
var newLocation = Element.MoveTowards(Angle, d);
Element.MoveTo(newLocation.Left, newLocation.Top);
haveMovedSinceLastHitDetection = true;
}
OnVelocityEnforced?.Fire();
}
}
public override void Evaluate()
{
float dt = (float)Governor.Rate.TotalSeconds;
if (dt == 0)
{
dt = (float)Time.CurrentTime.Increment.TotalSeconds;
}
float dx = SpeedX * dt;
float dy = SpeedY * dt;
var obstacles = GetObstacles().ToList();
if (dx == 0 && dy == 0)
{
return;
}
var effectiveExclusions = HitDetectionExclusionTypes.Count > 0 || HitDetectionExclusions.Count == 0 ?
new List <IRectangularF>(this.HitDetectionExclusions.Union(SpaceTime.CurrentSpaceTime.Elements.Where(e => HitDetectionExclusionTypes.Contains(e.GetType())))) : null;
var hitPrediction = HitDetection.PredictHit(new HitDetectionOptions()
{
Bounds = SpaceTime.CurrentSpaceTime.Bounds,
MovingObject = Element,
Exclusions = effectiveExclusions,
Obstacles = obstacles.As <IRectangularF>().ToList(),
Dx = dx,
Dy = dy,
});
if (hitPrediction.Type != HitType.None)
{
float angle = Element.Center().CalculateAngleTo(hitPrediction.ObstacleHit.Center());
if (haveMovedSinceLastHitDetection)
{
ImpactOccurred?.Fire(new Impact()
{
Angle = angle,
MovingObject = Element,
ObstacleHit = hitPrediction.ObstacleHit,
HitType = hitPrediction.Type,
});
haveMovedSinceLastHitDetection = false;
var testArea = RectangularF.Create(Element.Left + dx, Element.Top + dy, Element.Width, Element.Height);
if (hitPrediction.Direction == Direction.Down || hitPrediction.Direction == Direction.Up)
{
SpeedY = -SpeedY * Bounciness;
SpeedX = SpeedX * ImpactFriction;
}
else if (hitPrediction.Direction == Direction.Left || hitPrediction.Direction == Direction.Right)
{
SpeedX = -SpeedX * Bounciness;
SpeedY = SpeedY * ImpactFriction;
}
else
{
SpeedX = -SpeedX * Bounciness;
SpeedY = -SpeedY * Bounciness;
}
Element.SizeOrPositionChanged.Fire();
}
}
else
{
var oldLocation = Element.CopyBounds();
Element.MoveBy(dx, dy);
isSettingAnglePrivately = true;
this.Angle = oldLocation.Center().CalculateAngleTo(Element.Center());
isSettingAnglePrivately = false;
haveMovedSinceLastHitDetection = true;
}
}
private async Task ExecuteAsync()
{
while (this.Lifetime.IsExpired == false)
{
if (MovementTakeover != null)
{
await MovementTakeover();
continue;
}
float dt = (float)Governor.Rate.TotalSeconds;
if (dt == 0)
{
dt = (float)Time.CurrentTime.Increment.TotalSeconds;
}
float d = Speed * dt;
if (d == 0)
{
OnVelocityEnforced?.Fire();
await Time.CurrentTime.YieldAsync();
continue;
}
var obstacles = GetObstacles();
if (obstacles.Where(o => o.Touches(Element)).Any())
{
Element.NudgeFree();
}
var hitPrediction = HitDetection.PredictHit(new HitDetectionOptions()
{
MovingObject = Element is IHaveMassBounds ? (Element as IHaveMassBounds).MassBounds : Element,
Obstacles = obstacles,
Angle = Angle,
Visibility = d,
});
LastPrediction = hitPrediction;
if (hitPrediction.Type != HitType.None)
{
if (hitPrediction.LKG != null && Element.TopLeft().Equals(hitPrediction.LKG) == false)
{
Element.MoveTo(hitPrediction.LKG.Left, hitPrediction.LKG.Top);
haveMovedSinceLastHitDetection = true;
}
float angle = Element.Center().CalculateAngleTo(hitPrediction.ObstacleHit.Center());
if (haveMovedSinceLastHitDetection)
{
LastImpact = new Impact()
{
Angle = angle,
MovingObject = Element,
ObstacleHit = hitPrediction.ObstacleHit,
HitType = hitPrediction.Type,
};
ImpactOccurred?.Fire(LastImpact);
GlobalImpactOccurred.Fire(LastImpact);
haveMovedSinceLastHitDetection = false;
Element.SizeOrPositionChanged.Fire();
}
Stop();
}
else
{
var newLocation = Element.MoveTowards(Angle, d);
Element.MoveTo(newLocation.Left, newLocation.Top);
haveMovedSinceLastHitDetection = true;
}
OnVelocityEnforced?.Fire();
await Time.CurrentTime.YieldAsync();
}
}