Implement "Add Left/Right Haptic Click" binds

Addresses #244

src/openvr/ivrinput.cpp

@@ -140,6 +140,8 @@ SteamIVRInput::SteamIVRInput()
       m_pushToTalk( action_keys::pushToTalk ),
       m_leftHaptic( action_keys::hapticsLeft ),
       m_rightHaptic( action_keys::hapticsRight ),
+      m_addLeftHapticClick( action_keys::addLeftHapticClick ),
+      m_addRightHapticClick( action_keys::addRightHapticClick ),
       m_proxSensor( action_keys::proxSensor ),
       m_leftHand( input_keys::leftHand ), m_rightHand( input_keys::rightHand ),
       m_sets( { m_mainSet.activeActionSet(),
@@ -317,6 +319,16 @@ bool SteamIVRInput::proxState()
     return isDigitalActionActivatedConstant( m_proxSensor );
 }
 
+bool SteamIVRInput::addLeftHapticClick()
+{
+    return isDigitalActionActivatedConstant( m_addLeftHapticClick );
+}
+
+bool SteamIVRInput::addRightHapticClick()
+{
+    return isDigitalActionActivatedConstant( m_addRightHapticClick );
+}
+
 bool SteamIVRInput::keyboardOne()
 {
     return isDigitalActionActivatedOnce( m_keyboardOne );

src/openvr/ivrinput.h

@@ -58,6 +58,9 @@ namespace action_keys
     constexpr auto hapticsLeft = "/actions/haptic/out/HapticsLeft";
     constexpr auto hapticsRight = "/actions/haptic/out/HapticsRight";
     constexpr auto proxSensor = "/actions/haptic/in/ProxSensor";
+    constexpr auto addLeftHapticClick = "/actions/haptic/in/AddLeftHapticClick";
+    constexpr auto addRightHapticClick
+        = "/actions/haptic/in/AddRightHapticClick";
 
     constexpr auto chaperoneToggle = "/actions/misc/in/ChaperoneToggle";
 
@@ -144,6 +147,8 @@ public:
     bool zAxisLockToggle();
     bool chaperoneToggle();
     bool proxState();
+    bool addLeftHapticClick();
+    bool addRightHapticClick();
 
     bool pushToTalk();
 
@@ -225,6 +230,8 @@ private:
     // haptic bindings
     DigitalAction m_leftHaptic;
     DigitalAction m_rightHaptic;
+    DigitalAction m_addLeftHapticClick;
+    DigitalAction m_addRightHapticClick;
 
     // prox Sensor
     DigitalAction m_proxSensor;