Initial Commit

Assets/Oculus/SampleFramework/Usage/HandsTrainExample/Scripts/TrainCrossingController.cs

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+/*
+ * 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 System.Collections;
+using UnityEngine;
+using UnityEngine.Assertions;
+
+namespace OculusSampleFramework
+{
+    public class TrainCrossingController : MonoBehaviour
+    {
+        [SerializeField] private AudioSource _audioSource = null;
+        [SerializeField] private AudioClip[] _crossingSounds = null;
+        [SerializeField] private MeshRenderer _lightSide1Renderer = null;
+        [SerializeField] private MeshRenderer _lightSide2Renderer = null;
+        [SerializeField] private SelectionCylinder _selectionCylinder = null;
+
+        private Material _lightsSide1Mat;
+        private Material _lightsSide2Mat;
+        private int _colorId = Shader.PropertyToID("_Color");
+
+        private Coroutine _xingAnimationCr = null;
+        private InteractableTool _toolInteractingWithMe = null;
+
+        private void Awake()
+        {
+            Assert.IsNotNull(_audioSource);
+            Assert.IsNotNull(_crossingSounds);
+            Assert.IsNotNull(_lightSide1Renderer);
+            Assert.IsNotNull(_lightSide2Renderer);
+            Assert.IsNotNull(_selectionCylinder);
+
+            _lightsSide1Mat = _lightSide1Renderer.material;
+            _lightsSide2Mat = _lightSide2Renderer.material;
+        }
+
+        private void OnDestroy()
+        {
+            if (_lightsSide1Mat != null)
+            {
+                Destroy(_lightsSide1Mat);
+            }
+
+            if (_lightsSide2Mat != null)
+            {
+                Destroy(_lightsSide2Mat);
+            }
+        }
+
+        public void CrossingButtonStateChanged(InteractableStateArgs obj)
+        {
+            bool inActionState = obj.NewInteractableState == InteractableState.ActionState;
+            if (inActionState)
+            {
+                ActivateTrainCrossing();
+            }
+
+            _toolInteractingWithMe = obj.NewInteractableState > InteractableState.Default ? obj.Tool : null;
+        }
+
+        private void Update()
+        {
+            if (_toolInteractingWithMe == null)
+            {
+                _selectionCylinder.CurrSelectionState = SelectionCylinder.SelectionState.Off;
+            }
+            else
+            {
+                _selectionCylinder.CurrSelectionState = (
+                    _toolInteractingWithMe.ToolInputState == ToolInputState.PrimaryInputDown ||
+                    _toolInteractingWithMe.ToolInputState == ToolInputState.PrimaryInputDownStay)
+                    ? SelectionCylinder.SelectionState.Highlighted
+                    : SelectionCylinder.SelectionState.Selected;
+            }
+        }
+
+        private void ActivateTrainCrossing()
+        {
+            int maxSoundIndex = _crossingSounds.Length - 1;
+            var audioClip = _crossingSounds[(int)(Random.value * maxSoundIndex)];
+            _audioSource.clip = audioClip;
+            _audioSource.timeSamples = 0;
+            _audioSource.Play();
+            if (_xingAnimationCr != null)
+            {
+                StopCoroutine(_xingAnimationCr);
+            }
+
+            _xingAnimationCr = StartCoroutine(AnimateCrossing(audioClip.length * 0.75f));
+        }
+
+        private IEnumerator AnimateCrossing(float animationLength)
+        {
+            ToggleLightObjects(true);
+
+            float animationEndTime = Time.time + animationLength;
+
+            float lightBlinkDuration = animationLength * 0.1f;
+            float lightBlinkStartTime = Time.time;
+            float lightBlinkEndTime = Time.time + lightBlinkDuration;
+            Material lightToBlinkOn = _lightsSide1Mat;
+            Material lightToBlinkOff = _lightsSide2Mat;
+            Color onColor = new Color(1.0f, 1.0f, 1.0f, 1.0f);
+            Color offColor = new Color(1.0f, 1.0f, 1.0f, 0.0f);
+
+            while (Time.time < animationEndTime)
+            {
+                float t = (Time.time - lightBlinkStartTime) / lightBlinkDuration;
+                lightToBlinkOn.SetColor(_colorId, Color.Lerp(offColor, onColor, t));
+                lightToBlinkOff.SetColor(_colorId, Color.Lerp(onColor, offColor, t));
+
+                // switch which lights blink on and off when time runs out
+                if (Time.time > lightBlinkEndTime)
+                {
+                    Material temp = lightToBlinkOn;
+                    lightToBlinkOn = lightToBlinkOff;
+                    lightToBlinkOff = temp;
+                    lightBlinkStartTime = Time.time;
+                    lightBlinkEndTime = Time.time + lightBlinkDuration;
+                }
+
+                yield return null;
+            }
+
+            ToggleLightObjects(false);
+        }
+
+        private void AffectMaterials(Material[] materials, Color newColor)
+        {
+            foreach (var material in materials)
+            {
+                material.SetColor(_colorId, newColor);
+            }
+        }
+
+        private void ToggleLightObjects(bool enableState)
+        {
+            _lightSide1Renderer.gameObject.SetActive(enableState);
+            _lightSide2Renderer.gameObject.SetActive(enableState);
+        }
+    }
+}