/// <summary>
/// Gets the closest gravity point out of all the ones stored in the GravityPoints array
/// </summary>
/// <returns>The closest gravity point.</returns>
protected virtual GravityPoint GetClosestGravityPoint()
{
if (_gravityPoints.Count == 0)
{
return(null);
}
GravityPoint closestGravityPoint = null;
float closestDistanceSqr = Mathf.Infinity;
Vector3 currentPosition = _controller.ColliderCenterPosition;
foreach (GravityPoint gravityPoint in _gravityPoints)
{
Vector3 directionToTarget = gravityPoint.transform.position - currentPosition;
float dSqrToTarget = directionToTarget.sqrMagnitude;
// if we're outside of this point's zone of effect, we do nothing and exit
if (directionToTarget.magnitude > gravityPoint.DistanceOfEffect)
{
continue;
}
if (dSqrToTarget < closestDistanceSqr)
{
closestDistanceSqr = dSqrToTarget;
closestGravityPoint = gravityPoint;
}
}
return(closestGravityPoint);
}
/// <summary>
/// Finds the closest gravity point and changes the gravity if needed
/// </summary>
protected virtual void ComputeGravityPoints()
{
// if we're not affected by gravity points, we do nothing and exit
if (!SubjectToGravityPoints)
{
return;
}
// if we're in a gravity zone, we do nothing and exit
if (_inAGravityZone)
{
return;
}
// we grab the closest gravity point
_closestGravityPoint = GetClosestGravityPoint();
// if it's not null
if (_closestGravityPoint != null)
{
// our new gravity point becomes the closest if we didn't have one already, otherwise we stay on the last gravity point met for now
_newGravityPoint = (_lastGravityPoint == null) ? _closestGravityPoint : _lastGravityPoint;
// if we've got a new gravity point
if ((_lastGravityPoint != _closestGravityPoint) && (_lastGravityPoint != null))
{
// if we haven't entered a new gravity point in a while, we switch to that new gravity point
if (Time.time - _entryTimeStampPoints >= InactiveBufferDuration)
{
_entryTimeStampPoints = Time.time;
_newGravityPoint = _closestGravityPoint;
Transition(true, _newGravityPoint.transform.position - _controller.ColliderCenterPosition);
StartRotating();
}
}
// if we didn't have a gravity point last time, we switch to this new one
if (_lastGravityPoint == null)
{
if (Time.time - _entryTimeStampPoints >= InactiveBufferDuration)
{
_entryTimeStampPoints = Time.time;
_newGravityPoint = _closestGravityPoint;
Transition(true, _newGravityPoint.transform.position - _controller.ColliderCenterPosition);
StartRotating();
}
}
// we override our gravity
_gravityPointDirection = _newGravityPoint.transform.position - _controller.ColliderCenterPosition;
float gravityAngle = 180 - MMMaths.AngleBetween(Vector2.up, _gravityPointDirection);
_gravityOverridden = true;
_overrideGravityAngle = gravityAngle;
_lastGravityPoint = _newGravityPoint;
}
else
{
// if we don't have a gravity point in range, our gravity is not overridden
if (Time.time - _entryTimeStampPoints >= InactiveBufferDuration)
{
if (_lastGravityPoint != null)
{
Transition(false, _newGravityPoint.transform.position - _controller.ColliderCenterPosition);
StartRotating();
}
_entryTimeStampPoints = Time.time;
_gravityOverridden = false;
_lastGravityPoint = null;
}
}
}