first commit

2026-03-20 17:55:53 +08:00
commit c5778c498b
328 changed files with 11867 additions and 0 deletions
@@ -0,0 +1,34 @@
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace OCES.Audio
+{
+    public class PitchStepManager
+    {
+        readonly Dictionary<uint, int> m_pitchStepCounts = new();
+        readonly Dictionary<uint, double> m_pitchStepLastTime = new();
+
+        internal float ResolvePitch(AudioObject audioObject, double time)
+        {
+            if (audioObject.PitchStep == 0 || audioObject.PitchStepThreshold == 0) //没配置PitchStep
+            {
+                return 1f;
+            }
+            
+            // 超时了，或者没播过
+            if (!this.m_pitchStepLastTime.TryGetValue(audioObject.Id, out double lastPitchStepTime) 
+                || time - lastPitchStepTime > audioObject.PitchStepThreshold) 
+            {
+                this.m_pitchStepCounts[audioObject.Id] = 0;
+                this.m_pitchStepLastTime[audioObject.Id] = time;
+                return 1f;
+            }
+            
+            //命中了
+            int pitchStepCount = this.m_pitchStepCounts[audioObject.Id];
+            pitchStepCount = this.m_pitchStepCounts[audioObject.Id] = Mathf.Min(pitchStepCount + 1, audioObject.PitchStepLimit);
+            this.m_pitchStepLastTime[audioObject.Id] = time;
+            return Mathf.Pow(2, audioObject.PitchStep * pitchStepCount / 12f);
+        }
+    }
+}