restructured everything

src/graphics/RenderTarget.cpp

@@ -0,0 +1,79 @@
+#include "graphics/RenderTarget.hpp"
+
+#include <SDL.h>
+#include <Util.hpp>
+
+SDLU_BEGIN
+RenderTarget::~RenderTarget()
+{
+    RETURN_IF_NULLPTR(renderer);
+
+    SDL_DestroyRenderer(renderer);
+}
+
+void RenderTarget::Clear(const Color& color)
+{
+    RETURN_IF_NULLPTR(renderer);
+
+    SDL_SetRenderDrawColor(renderer, color.r, color.g, color.b, color.a);
+    SDL_RenderClear(renderer);
+}
+
+void RenderTarget::Draw(const Drawable& drawable)
+{
+    RETURN_IF_NULLPTR(renderer);
+
+    drawable.Draw(renderer);
+}
+
+void RenderTarget::Display()
+{
+    RETURN_IF_NULLPTR(renderer);
+
+    SDL_RenderPresent(renderer);
+
+    if (m_oFramerate != 0)
+    {
+        Uint64 diff = std::chrono::duration_cast<std::chrono::milliseconds>(
+            std::chrono::steady_clock::now() - m_oTimeSinceLastDisplay).count();
+
+        if (diff < 1000 / m_oFramerate)
+        {
+            SDL_Delay(static_cast<Uint32>(1000 / m_oFramerate - diff));
+        }
+    }
+
+    m_oTimeSinceLastDisplay = std::chrono::steady_clock::now();
+}
+
+void RenderTarget::SetMaxFramerate(Uint32 max)
+{
+    m_oFramerate = max;
+}
+
+RenderTarget::RenderTarget(SDL_Window* target) :
+    renderer(nullptr), m_oFramerate(0)
+{
+    RETURN_IF_NOT_NULLPTR(renderer);
+    renderer = SDL_CreateRenderer(target, -1, SDL_RENDERER_ACCELERATED);
+        
+    THROW_IF(IS_NULLPTR(renderer),
+        std::runtime_error("Failed to create SDL_Renderer* from SDL_Window*: " + std::string(SDL_GetError())));
+
+    m_oTimeSinceLastDisplay = std::chrono::steady_clock::now();
+}
+
+RenderTarget::RenderTarget(SDL_Surface* target) : 
+    renderer(nullptr), m_oFramerate(0)
+{
+    m_oFramerate = 0;
+
+    RETURN_IF_NOT_NULLPTR(renderer);
+    renderer = SDL_CreateSoftwareRenderer(target);
+
+    THROW_IF(IS_NULLPTR(renderer),
+        std::runtime_error("Failed to create SDL_Renderer* from SDL_Surface*: " + std::string(SDL_GetError())));
+
+    m_oTimeSinceLastDisplay = std::chrono::steady_clock::now();
+}
+SDLU_END