public static void FollowTarget(AttachObject target, AttachObject follower,
AttachStrategyFollowPositionOptions positionOptions,
AttachStrategyFollowRotationOptions rotationOptions)
{
if (rotationOptions.behavior != RotationBehavior.DoNothing)
{
Quaternion desiredRotation = FollowingUtility.GetDesiredRotationForObject(follower,
rotationOptions.behavior, rotationOptions.GetRotationParamSelector(),
rotationOptions.GetLookAtPositionParamSelector(), rotationOptions.GetUpParamSelector(),
rotationOptions.GetForwardParamSelector(), rotationOptions.GetOffsetParamSelector());
Quaternion nextRotation;
if (rotationOptions.speed == 0)
{
nextRotation = desiredRotation;
}
else
{
nextRotation = Quaternion.RotateTowards(follower.attachable.transform.rotation, desiredRotation,
Time.deltaTime * rotationOptions.speed);
}
ClingyUtils.MoveRotation(nextRotation, follower.attachable.transform, rotationOptions.rotateMethod,
follower.rigidbody, follower.rigidbody2D);
}
// todo - move before rotate, rotate before move...it's situationally dependent
if (positionOptions.behavior != PositionBehavior.DoNothing)
{
FollowingObjectState state = GetObjectState(follower);
Vector3 desiredPos = FollowingUtility.GetDesiredPositionForObject(follower, positionOptions.behavior,
positionOptions.GetFollowerAnchorParamSelector(),
positionOptions.GetTargetAnchorParamSelector());
if (!positionOptions.followX)
{
desiredPos.x = follower.attachable.transform.position.x;
}
if (!positionOptions.followY)
{
desiredPos.y = follower.attachable.transform.position.y;
}
if (!positionOptions.followZ)
{
desiredPos.z = follower.attachable.transform.position.z;
}
Vector3 nextPos;
if (positionOptions.smoothing == 0)
{
nextPos = desiredPos;
}
else
{
nextPos = Vector3.SmoothDamp(follower.attachable.transform.position, desiredPos,
ref state.velocity, positionOptions.smoothing);
}
ClingyUtils.MovePosition(nextPos, follower.attachable.transform, positionOptions.moveMethod,
follower.rigidbody, follower.rigidbody2D);
}
// // note this sets localScale to lossyScale, so only works if there's no parent scale on the attacher
// if (followScale)
// context.attacher.transform.localScale = context.receiver.transform.lossyScale;
}
// returns a world rotation
public static Quaternion GetLookAt2DRotation(GameObject gameObjectToRotate, Attachment attachment,
ParamSelector lookAtPos, AttachObject reference = null, bool flipX = false)
{
Vector3 lookAtWorldPos = lookAtPos.GetWorldPosition(attachment, reference);
if (gameObjectToRotate.transform.position == lookAtWorldPos)
{
return(gameObjectToRotate.transform.rotation);
}
return(ClingyUtils.LookAt2D(gameObjectToRotate.transform.position, lookAtWorldPos, flipX));
}
