/*
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 * All rights reserved.
 *
 * Licensed under the Oculus SDK License Agreement (the "License");
 * you may not use the Oculus SDK except in compliance with the License,
 * which is provided at the time of installation or download, or which
 * otherwise accompanies this software in either electronic or hard copy form.
 *
 * You may obtain a copy of the License at
 *
 * https://developer.oculus.com/licenses/oculussdk/
 *
 * Unless required by applicable law or agreed to in writing, the Oculus SDK
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

using Oculus.Interaction;
using UnityEngine;

public class MoveRelativeToTargetProvider : MonoBehaviour, IMovementProvider
{
    public IMovement CreateMovement()
    {
        return new MoveRelativeToTarget();
    }
}

public class MoveRelativeToTarget : IMovement
{
    public Pose Pose => _current;
    public bool Stopped => true;

    private Pose _current = Pose.identity;
    private Pose _originalTarget;
    private Pose _originalSource;

    private Pose _offset = Pose.identity;

    public void MoveTo(Pose target)
    {
        _originalTarget = target;
        _offset = PoseUtils.Delta(_originalTarget, _originalSource);
    }

    public void UpdateTarget(Pose target)
    {
        _current = PoseUtils.Multiply(target, _offset);
    }

    public void StopAndSetPose(Pose source)
    {
        _current = _originalSource = source;
    }

    public void Tick()
    {
    }
}