refactoring vr code

src/hmd.h

@@ -1,16 +1,9 @@
 #pragma once
 #include "rtt.h"
+#include "app.h"
 
-struct ViveController
+struct ViveController : public VRController
 {
-    enum class kButton : uint8_t
-    {
-        Pad,
-        Trigger,
-        Menu,
-        Grip,
-        COUNT,
-    };
     enum class kButtonMask : uint64_t
     {
         TriggerBit = 0x200000000,
@@ -18,20 +11,20 @@ struct ViveController
         MenuBit = 0x000000002,
         GripBit = 0x000000004,
     };
-    enum class kAction
-    {
-        Press,
-        Release,
-    };
+    
     static std::map<kButton, kButtonMask> m_mask;
-    std::array<bool, (int)kButton::COUNT> m_buttons;
-    std::array<bool, (int)kButton::COUNT> m_analog_buttons;
-    glm::mat4 m_mat;
+    
     vr::VRControllerState_t m_state{ 0 };
-    bool m_valid = false;
-    glm::vec2 axis(kButton button) const {
+    
+    glm::vec2 axis(kButton button) const 
+    {
         return { m_state.rAxis[(int)button].x, m_state.rAxis[(int)button].y };
     }
+
+    virtual float get_trigger_value() override
+    {
+        return axis(VRController::kButton::Trigger).x;
+    }
 };
 
 struct Vive