Adjust Spatialized Audio

Spatialized max distance needs to be adjusted based on the `App.Scene.Pose.scale` to do so we introduce a new script `MultiplayerAudioSourcesManager` which set all of the remote users audioSources max distance whenever the scene scales up or down

Assets/Resources/Multiplayer/Photon/SpeakerPrefab.prefab

@@ -56,7 +56,7 @@ AudioSource:
   MinDistance: 1
   MaxDistance: 500
   Pan2D: 0
-  rolloffMode: 0
+  rolloffMode: 2
   BypassEffects: 0
   BypassListenerEffects: 0
   BypassReverbZones: 0
@@ -66,21 +66,21 @@ AudioSource:
     - serializedVersion: 3
       time: 0
       value: 1
-      inSlope: 0
-      outSlope: 0
+      inSlope: -0.7447439
+      outSlope: -0.7447439
       tangentMode: 0
       weightedMode: 0
-      inWeight: 0.33333334
-      outWeight: 0.33333334
+      inWeight: 0
+      outWeight: 0.32808557
     - serializedVersion: 3
-      time: 1
-      value: 0
-      inSlope: 0
-      outSlope: 0
+      time: 0.99664307
+      value: 0.305542
+      inSlope: -0.7058288
+      outSlope: -0.7058288
       tangentMode: 0
       weightedMode: 0
-      inWeight: 0.33333334
-      outWeight: 0.33333334
+      inWeight: 0.12208462
+      outWeight: 0
     m_PreInfinity: 2
     m_PostInfinity: 2
     m_RotationOrder: 4

Assets/Scenes/Main.unity

@@ -15179,6 +15179,7 @@ GameObject:
   - component: {fileID: 1052269837}
   - component: {fileID: 1052269836}
   - component: {fileID: 1052269835}
+  - component: {fileID: 1052269838}
   m_Layer: 0
   m_Name: MultiplayerManager
   m_TagString: Untagged
@@ -15321,6 +15322,18 @@ MonoBehaviour:
   m_SyncType: 0
   numberOfCommandsExpected: 0
   numberOfCommandsSent: 0
+--- !u!114 &1052269838
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 1052269830}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 5e5dc8298e822c34698aa17ff24b2b77, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
 --- !u!1 &1057179852
 GameObject:
   m_ObjectHideFlags: 0

Assets/Scripts/Multiplayer/MultiplayerAudioSourcesManager.cs

@@ -0,0 +1,67 @@
+// Copyright 2023 The Open Brush Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// 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.Generic;
+using System.Linq;
+using TiltBrush;
+using UnityEngine;
+
+public class MultiplayerAudioSourcesManager : MonoBehaviour
+{
+    public static MultiplayerAudioSourcesManager m_Instance;
+    private List<AudioSource> sources;
+    private float _previousScale;
+
+    public void AddAudioSource(AudioSource source)
+    {
+
+        sources.Append(source);
+
+    }
+
+    void Update()
+    {
+        float currentScale = App.Scene.Pose.scale;
+
+        if (!Mathf.Approximately(currentScale, _previousScale))
+        {
+            _previousScale = currentScale;
+            UpdateAudioSources(currentScale);
+        }
+    }
+
+    private void UpdateAudioSources(float sceneScale)
+    {
+        // Loop backward to remove invalid AudioSources
+        for (int i = sources.Count - 1; i >= 0; i--)
+        {
+            var source = sources[i];
+            if (source != null)
+            {
+                float adjustedMaxDistance = CalculateMaxDistance(sceneScale);
+                source.maxDistance = adjustedMaxDistance;
+            }
+            else sources.RemoveAt(i);
+        }
+    }
+
+    private float CalculateMaxDistance(float sceneScale)
+    {
+        // This is based on OpenBrush default scene max radius
+        // - At scale 0.1, the mountains diameter is 200 (close range).
+        // - At scale 1.0,the mountains diameter is 20000 (far range).
+        return Mathf.Lerp(200f, 20000f, Mathf.Clamp01(sceneScale));
+    }
+
+}

Assets/Scripts/Multiplayer/MultiplayerManager.cs

@@ -418,6 +418,7 @@ void OnRemotePlayerJoined(int id, ITransientData<PlayerRigData> playerData)
             {
                 MultiplayerSceneSync.m_Instance.StartSyncronizationForUser(id);
             }
+
         }
 
         public void OnRemoteVoiceConnected(int id, GameObject voicePrefab)
@@ -446,6 +447,14 @@ public void OnRemoteVoiceConnected(int id, GameObject voicePrefab)
             {
                 Debug.LogWarning($"HeadTransform not found in {RemotePlayerGameObject.name}");
             }
+
+            AudioSource audioSource = voicePrefab.GetComponent<AudioSource>();
+            if (audioSource == null)
+            {
+                Debug.LogWarning($"VoicePrefab with ID {id} lack AudioSource :S ");
+                return;
+            }
+            MultiplayerAudioSourcesManager.m_Instance.AddAudioSource(audioSource);
         }
 
         public void SendLargeDataToPlayer(int playerId, byte[] Data, int percentage)