Fix left/right ctrl model not appear correctly on simulator

SimulatorModule returns left/right index even when the device isn't created
this causes HandRole does't trigger device changed then causes
RenderModelHook doesn't refresh models

also add connected check when mapping left/right device in
HandRole.cs to prevent mapping a disconnected device. Suppose this only
effects SimulatorModule since currently all other modules only return
connected left/right index

Author: lawwong

Assets/HTC.UnityPlugin/VRModule/Modules/SimulatorModule.cs

@@ -115,9 +115,9 @@ public override void OnDeactivated()
             }
         }
 
-        public override uint GetRightControllerDeviceIndex() { return RIGHT_INDEX; }
+        public override uint GetRightControllerDeviceIndex() { return m_currStates != null && m_currStates[RIGHT_INDEX].isConnected ? RIGHT_INDEX : VRModule.INVALID_DEVICE_INDEX; }
 
-        public override uint GetLeftControllerDeviceIndex() { return LEFT_INDEX; }
+        public override uint GetLeftControllerDeviceIndex() { return m_currStates != null && m_currStates[LEFT_INDEX].isConnected ? LEFT_INDEX : VRModule.INVALID_DEVICE_INDEX; }
 
         public override void Update()
         {

Assets/HTC.UnityPlugin/ViveInputUtility/Scripts/ViveRole/RoleMaps/HandRole.cs

@@ -146,7 +146,8 @@ private void MappingLeftRightHands()
             else
             {
                 rightIndex = VRModule.GetRightControllerDeviceIndex();
-                if (rightIndex >= deviceCount || RoleMap.IsDeviceConnectedAndBound(rightIndex))
+                var rightIndexState = VRModule.GetCurrentDeviceState(rightIndex);
+                if (!rightIndexState.isConnected || RoleMap.IsDeviceBound(rightIndexState.serialNumber))
                 {
                     rightIndex = VRModule.INVALID_DEVICE_INDEX;
                 }
@@ -159,7 +160,8 @@ private void MappingLeftRightHands()
             else
             {
                 leftIndex = VRModule.GetLeftControllerDeviceIndex();
-                if (leftIndex >= deviceCount || RoleMap.IsDeviceConnectedAndBound(leftIndex))
+                var leftIndexState = VRModule.GetCurrentDeviceState(leftIndex);
+                if (!leftIndexState.isConnected || RoleMap.IsDeviceBound(leftIndexState.serialNumber))
                 {
                     leftIndex = VRModule.INVALID_DEVICE_INDEX;
                 }
@@ -172,7 +174,7 @@ private void MappingLeftRightHands()
                 {
                     if (i == rightIndex || i == leftIndex) { continue; }
                     var state = VRModule.GetCurrentDeviceState(i);
-                    if (state.deviceClass != VRModuleDeviceClass.Controller) { continue; }
+                    if (!state.isConnected || state.deviceClass != VRModuleDeviceClass.Controller) { continue; }
                     if (RoleMap.IsDeviceBound(state.serialNumber)) { continue; }
                     m_sortedDeviceList.Add(i);
                 }