Initial Commit

Assets/Oculus/Interaction/Samples/Scripts/CountdownTimer.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 UnityEngine;
+using UnityEngine.Assertions;
+using UnityEngine.Events;
+
+namespace Oculus.Interaction.Samples
+{
+    /// <summary>
+    /// Performs a callback after a countdown timer has elapsed.
+    /// The countdown can be enabled or disabled by an external party.
+    /// </summary>
+    public class CountdownTimer : MonoBehaviour
+    {
+        [SerializeField, Min(0)]
+        private float _countdownTime = 1.0f;
+
+        [SerializeField]
+        private bool _countdownOn = false;
+
+        [SerializeField]
+        private UnityEvent _callback;
+
+        [SerializeField]
+        private UnityEvent<float> _progressCallback;
+
+        private float _countdownTimer;
+
+
+        public bool CountdownOn
+        {
+            get => _countdownOn;
+
+            set
+            {
+                if (value)
+                {
+                    if (!_countdownOn)
+                    {
+                        _countdownTimer = _countdownTime;
+                    }
+                }
+
+                _countdownOn = value;
+            }
+        }
+
+        private void Awake()
+        {
+            Assert.IsTrue(_countdownTime >= 0, "Countdown Time must be positive.");
+        }
+
+        private void Update()
+        {
+            if (!_countdownOn || _countdownTimer < 0)
+            {
+                _progressCallback.Invoke(0);
+                return;
+            }
+
+            _countdownTimer -= Time.deltaTime;
+            if (_countdownTimer < 0f)
+            {
+                _countdownTimer = -1f;
+                _callback.Invoke();
+                _progressCallback.Invoke(1);
+                return;
+            }
+
+            _progressCallback.Invoke(1 - _countdownTimer / _countdownTime);
+        }
+    }
+}