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114 lines
3.1 KiB
114 lines
3.1 KiB
/************************************************************************************
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Copyright (c) Facebook Technologies, LLC and its affiliates. All rights reserved.
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See SampleFramework license.txt for license terms. Unless required by applicable law
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or agreed to in writing, the sample code is provided “AS IS” WITHOUT WARRANTIES OR
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CONDITIONS OF ANY KIND, either express or implied. See the license for specific
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language governing permissions and limitations under the license.
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************************************************************************************/
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using System.Collections;
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using UnityEngine;
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using UnityEngine.Assertions;
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namespace OculusSampleFramework
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{
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public class WindmillBladesController : MonoBehaviour
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{
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private const float MAX_TIME = 1f;
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[SerializeField] private AudioSource _audioSource = null;
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[SerializeField] private AudioClip _windMillRotationSound = null;
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[SerializeField] private AudioClip _windMillStartSound = null;
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[SerializeField] private AudioClip _windMillStopSound = null;
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public bool IsMoving { get; private set; }
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private float _currentSpeed = 0f;
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private Coroutine _lerpSpeedCoroutine;
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private Coroutine _audioChangeCr;
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private Quaternion _originalRotation;
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private float _rotAngle = 0.0f;
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private void Start()
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{
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Assert.IsNotNull(_audioSource);
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Assert.IsNotNull(_windMillRotationSound);
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Assert.IsNotNull(_windMillStartSound);
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Assert.IsNotNull(_windMillStopSound);
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_originalRotation = transform.localRotation;
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}
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private void Update()
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{
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_rotAngle += _currentSpeed * Time.deltaTime;
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if (_rotAngle > 360.0f)
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{
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_rotAngle = 0.0f;
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}
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transform.localRotation = _originalRotation * Quaternion.AngleAxis(_rotAngle, Vector3.forward);
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}
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public void SetMoveState(bool newMoveState, float goalSpeed)
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{
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IsMoving = newMoveState;
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if (_lerpSpeedCoroutine != null)
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{
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StopCoroutine(_lerpSpeedCoroutine);
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}
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_lerpSpeedCoroutine = StartCoroutine(LerpToSpeed(goalSpeed));
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}
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private IEnumerator LerpToSpeed(float goalSpeed)
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{
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var totalTime = 0f;
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var startSpeed = _currentSpeed;
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if (_audioChangeCr != null)
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{
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StopCoroutine(_audioChangeCr);
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}
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// start up
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if (IsMoving)
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{
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_audioChangeCr = StartCoroutine(PlaySoundDelayed(_windMillStartSound,
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_windMillRotationSound, _windMillStartSound.length * 0.95f));
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} // stop
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else
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{
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PlaySound(_windMillStopSound);
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}
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var diffSpeeds = Mathf.Abs(_currentSpeed - goalSpeed);
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while (diffSpeeds > Mathf.Epsilon)
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{
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_currentSpeed = Mathf.Lerp(startSpeed, goalSpeed, totalTime / MAX_TIME);
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totalTime += Time.deltaTime;
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yield return null;
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diffSpeeds = Mathf.Abs(_currentSpeed - goalSpeed);
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}
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_lerpSpeedCoroutine = null;
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}
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private IEnumerator PlaySoundDelayed(AudioClip initial, AudioClip clip, float timeDelayAfterInitial)
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{
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PlaySound(initial, false);
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yield return new WaitForSeconds(timeDelayAfterInitial);
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PlaySound(clip, true);
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}
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private void PlaySound(AudioClip clip, bool loop = false)
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{
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_audioSource.loop = loop;
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_audioSource.timeSamples = 0;
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_audioSource.clip = clip;
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_audioSource.Play();
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}
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}
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}
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