void followPosition(IF_FollowEntity followEntity)
{
var sourceView = followEntity.FollowSourceEntity.GetGameObject();
var targetView = followEntity.FollowTargetEntity.GetGameObject();
if (sourceView == null || targetView == null)
{
return;
}
var transformToSource = followEntity.FollowSourceEntity.GetGameObject().transform;
var transformToTarget = followEntity.FollowTargetEntity.GetGameObject().transform;
Vector3 targetTransformPosition = transformToTarget.TransformPoint(followEntity.OffsetPosition);
Vector3 newPosition;
if (followEntity.SmoothPosition)
{
float alpha = Mathf.Clamp01(Vector3.Distance(followEntity.CalculatedPosition, targetTransformPosition) / followEntity.MaxDistanceDeltaPerFrame);
newPosition = Vector3.Lerp(followEntity.CalculatedPosition, targetTransformPosition, alpha);
}
else
{
newPosition = targetTransformPosition;
}
followEntity.CalculatedPosition = newPosition;
transformToSource.position = followEntity.CalculatedPosition;
}
void followRotation(IF_FollowEntity followEntity)
{
var sourceView = followEntity.FollowSourceEntity.GetGameObject();
var targetView = followEntity.FollowTargetEntity.GetGameObject();
if (sourceView == null || targetView == null)
{
return;
}
var transformToSource = followEntity.FollowSourceEntity.GetGameObject().transform;
var transformToTarget = followEntity.FollowTargetEntity.GetGameObject().transform;
Quaternion targetTransformRotation = transformToTarget.rotation * Quaternion.Euler(followEntity.OffsetRotation);
Quaternion newRotation;
if (followEntity.SmoothRotation)
{
float alpha = Mathf.Clamp01(Quaternion.Angle(Quaternion.Euler(followEntity.CalculatedRotation), targetTransformRotation) / followEntity.MaxDistanceDeltaPerFrame);
newRotation = Quaternion.Lerp(Quaternion.Euler(followEntity.CalculatedRotation), targetTransformRotation, alpha);
}
else
{
newRotation = targetTransformRotation;
}
followEntity.CalculatedRotation = newRotation.eulerAngles;
transformToSource.rotation = Quaternion.Euler(followEntity.CalculatedRotation);
}
void follow(IEntity entity, IF_FollowEntity followEntity)
{
if (entityDatabase.GetCollectionFor(followEntity.FollowSourceEntity) == null ||
entityDatabase.GetCollectionFor(followEntity.FollowTargetEntity) == null)
{
entityDatabase.RemoveEntity(entity);
return;
}
if (followEntity.FollowPosition)
{
followPosition(followEntity);
}
if (followEntity.FollowRotation)
{
followRotation(followEntity);
}
}
