basic mouse input

include/Orange/Render/Window.h

@@ -7,6 +7,12 @@ struct SDL_Window;
 
 namespace orange
 {
+    struct MouseDelta
+    {
+        int x = 0;
+        int y = 0;
+    };
+
     class Window
     {
     public:
@@ -21,10 +27,18 @@ namespace orange
         static Result<Window> Create();
 
         bool Update();
+
+        void EnableRelativeMouse(bool relative);
+
+        MouseDelta GetMouseDelta();
     protected:
         friend Result<Window>;
         Window(SDL_Window* window);
     private:
         SDL_Window* m_window = nullptr;
+        bool m_relativeMouse = false;
+        bool m_hasFocus = false;
+
+        MouseDelta m_mouseDelta = {};
     };
 }

src/Apps/Tools/CubeTest.cpp

@@ -596,8 +596,16 @@ int main(int argc, char** argv)
 
     memcpy((uint8_t*)(r_buffer->ptr) + uniformSlice.offset, &uniformData, sizeof(uniformData));
 
+    r_window->EnableRelativeMouse(true);
+
     while (r_window->Update())
     {
+        auto mouseDelta = r_window->GetMouseDelta();
+        //if (mouseDelta.x || mouseDelta.y)
+        //{
+        //    log::info("mouse: %d %d", mouseDelta.x, mouseDelta.y);
+        //}
+
         VkCommandBuffer cmdBuf = r_swapchain->CommandBuffer();
         r_renderContext->BeginCommandBuffer(cmdBuf);
         {

src/Orange/Render/Window.cpp

@@ -67,9 +67,33 @@ namespace orange
         {
             switch (e.type)
             {
+            case SDL_MOUSEMOTION:
+                if (m_hasFocus)
+                {
+                    m_mouseDelta.x += e.motion.xrel;
+                    m_mouseDelta.y += e.motion.yrel;
+                }
+                break;
             case SDL_KEYDOWN:
             case SDL_KEYUP:
                 break;
+			case SDL_WINDOWEVENT:
+				switch (e.window.event)
+				{
+					case SDL_WINDOWEVENT_FOCUS_GAINED:
+					{
+						m_hasFocus = true;
+						SDL_ShowCursor(m_relativeMouse ? SDL_FALSE : SDL_TRUE);
+						break;
+					}
+					case SDL_WINDOWEVENT_FOCUS_LOST:
+					{
+						m_hasFocus = false;
+						SDL_ShowCursor(SDL_TRUE);
+						break;
+					}
+				}
+				break;
             case SDL_QUIT:
                 quit = true;
                 break;
@@ -78,4 +102,19 @@ namespace orange
 
         return !quit;
     }
+
+    void Window::EnableRelativeMouse(bool relative)
+    {
+        m_relativeMouse = relative;
+        SDL_SetWindowGrab(m_window, relative ? SDL_TRUE : SDL_FALSE);
+        SDL_SetRelativeMouseMode(relative ? SDL_TRUE : SDL_FALSE);
+        SDL_ShowCursor(m_hasFocus && relative ? SDL_FALSE : SDL_TRUE);
+    }
+
+    MouseDelta Window::GetMouseDelta()
+    {
+        MouseDelta delta = m_mouseDelta;
+        m_mouseDelta = MouseDelta{};
+        return delta;
+    }
 }