protected override MoveResult UpdatePosition(GameTime gameTime, Vector2 interpolation)
{
MoveResult result = Movement.Move(this, interpolation);
var blocked = result.HasFlag(MoveResult.Blocked);
if (blocked) // collided.
{
Direction = Direction.None;
Speed = Vector2.Zero;
}
else
{
Position = BoundingBox.GetPosition(this);
if (!result.HasFlag(MoveResult.X) || result.HasFlag(MoveResult.FlattenXSpeed))
{
Speed.X = 0;
}
if (!result.HasFlag(MoveResult.Y) || result.HasFlag(MoveResult.FlattenYSpeed))
{
Speed.Y = interpolationCalculator.CalculateGravitySpeed(gameTime).Y;
}
}
return(result);
}
private Vector2 Think(GameTime gameTime, int thoughts = 3)
{
FloatRectangle aabb = BoundingBox.Bounds;
Vector2 interpolation = Movement.InterpolationCalculator.CalculateInterpolation(gameTime);
if (interpolation == Vector2.Zero)
{
return(interpolation);
}
Vector2 movement = AddMargin(interpolation) + MagicNumbers.GloopVertigoMargin;
MoveResult predicted = Movement.CollisionDetection.CanMoveInterpolated(aabb, movement, DetectionType.Collision);
if (!predicted.HasFlag(MoveResult.BlockedOnNegativeX) &&
!predicted.HasFlag(MoveResult.BlockedOnPositiveX) &&
predicted.HasFlag(MoveResult.BlockedOnPositiveY))
{
return(interpolation);
}
else if (thoughts > 0)
{
ToggleDirection();
return(Think(gameTime, --thoughts));
}
else
{
return(Vector2.Zero);
}
}
protected override MoveResult UpdatePosition(GameTime gameTime, Vector2 interpolation)
{
var wasAirborne = State == HitBoxState.Airborne;
MoveResult result = base.UpdatePosition(gameTime, interpolation);
if (!result.HasFlag(MoveResult.Y) || result.HasFlag(MoveResult.FlattenYSpeed)) // sanity.
{
lastJumpStarted = null;
}
if (result == MoveResult.Died)
{
Die();
}
else if (result == MoveResult.LevelCompleted)
{
CompleteLevel();
}
else if (wasAirborne)
{
if (jumpStartPosition.HasValue && Position.Y > jumpStartPosition.Value.Y)
{
jumpStartPosition = null; // avoid repetition.
FallEffects();
}
if (State == HitBoxState.Surfaced)
{
Direction = Direction.None;
IdleEffects();
}
}
return(result);
}
private MoveResult Reposition(IHitBox hitBox, MoveResult result, Vector2 interpolation)
{
AxisAlignedBoundingBox aabb = hitBox.BoundingBox;
var moveX = result.HasFlag(MoveResult.X) &&
!result.HasFlag(MoveResult.BlockedOnNegativeX) &&
!result.HasFlag(MoveResult.BlockedOnPositiveX);
if (moveX)
{
aabb.Position.X += interpolation.X;
}
bool surfaced = CanSetSurfaced(hitBox);
var moveY = result.HasFlag(MoveResult.Y) &&
!result.HasFlag(MoveResult.BlockedOnNegativeY) &&
!result.HasFlag(MoveResult.BlockedOnPositiveY);
if ((moveY || !surfaced) && !result.HasFlag(MoveResult.Died))
{
hitBox.State = HitBoxState.Airborne;
}
else
{
hitBox.State = HitBoxState.Surfaced;
}
if (moveY && !result.HasFlag(MoveResult.Died))
{
aabb.Position.Y += interpolation.Y;
}
var reverse = CollisionDetection.CanMove(aabb.Bounds, -interpolation, DetectionType.Retrace);
if (moveX) // fix issue when moving on X axis to the left.
{
if (reverse.HasFlag(MoveResult.BlockedOnNegativeX) && interpolation.X > 0)
{
aabb.Position.X -= interpolation.X;
result &= ~MoveResult.X;
}
else if (reverse.HasFlag(MoveResult.BlockedOnPositiveX) && interpolation.X < 0)
{
aabb.Position.X -= interpolation.X;
result &= ~MoveResult.X;
}
}
if (moveY) // fix issue when hitting an impassable on Y axis when jumping.
{
if (reverse.HasFlag(MoveResult.BlockedOnNegativeY) && interpolation.Y > 0)
{
aabb.Position.Y -= interpolation.Y;
result &= ~MoveResult.Y;
}
else if (reverse.HasFlag(MoveResult.BlockedOnPositiveY) && interpolation.Y < 0)
{
aabb.Position.Y -= interpolation.Y;
result &= ~MoveResult.Y;
}
}
return(result);
}
private MoveResult Reposition(IHitBox hitBox, MoveResult result, Vector2 interpolation)
{
AxisAlignedBoundingBox aabb = hitBox.BoundingBox;
var moveX = result.HasFlag(MoveResult.X)
&& !result.HasFlag(MoveResult.BlockedOnNegativeX)
&& !result.HasFlag(MoveResult.BlockedOnPositiveX);
if (moveX)
{
aabb.Position.X += interpolation.X;
}
bool surfaced = CanSetSurfaced(hitBox);
var moveY = result.HasFlag(MoveResult.Y)
&& !result.HasFlag(MoveResult.BlockedOnNegativeY)
&& !result.HasFlag(MoveResult.BlockedOnPositiveY);
if ((moveY || !surfaced) && !result.HasFlag(MoveResult.Died))
{
hitBox.State = HitBoxState.Airborne;
}
else
{
hitBox.State = HitBoxState.Surfaced;
}
if (moveY && !result.HasFlag(MoveResult.Died))
{
aabb.Position.Y += interpolation.Y;
}
var reverse = CollisionDetection.CanMove(aabb.Bounds, -interpolation, DetectionType.Retrace);
if (moveX) // fix issue when moving on X axis to the left.
{
if (reverse.HasFlag(MoveResult.BlockedOnNegativeX) && interpolation.X > 0)
{
aabb.Position.X -= interpolation.X;
result &= ~MoveResult.X;
}
else if (reverse.HasFlag(MoveResult.BlockedOnPositiveX) && interpolation.X < 0)
{
aabb.Position.X -= interpolation.X;
result &= ~MoveResult.X;
}
}
if (moveY) // fix issue when hitting an impassable on Y axis when jumping.
{
if (reverse.HasFlag(MoveResult.BlockedOnNegativeY) && interpolation.Y > 0)
{
aabb.Position.Y -= interpolation.Y;
result &= ~MoveResult.Y;
}
else if (reverse.HasFlag(MoveResult.BlockedOnPositiveY) && interpolation.Y < 0)
{
aabb.Position.Y -= interpolation.Y;
result &= ~MoveResult.Y;
}
}
return result;
}
