Split main.cpp to different files

cpp/src/sprite.hpp

@@ -0,0 +1,73 @@
+#pragma once
+
+#include <SDL3/SDL.h>
+#include <SDL3_image/SDL_image.h>
+#include <cassert>
+#include <memory>
+#include <stdexcept>
+#include <string>
+
+#include "math.hpp"
+#include "log.hpp"
+
+class Sprite {
+public:
+  Sprite() : m_Texture(nullptr, SDL_DestroyTexture) {}
+  Sprite(std::string path, Vec2D<float> center) : Sprite() {
+    LoadImage(path, center);
+  }
+  int m_R = 0;
+  int m_G = 0;
+  int m_B = 0;
+  int m_A = 0;
+  Sprite(const Sprite &x) = delete;
+  Sprite(Sprite &&x) = delete;
+  ~Sprite() { LOG_DEBUG("."); }
+  void LoadImage(std::string path, Vec2D<float> image_center = {0.0, 0.0}) {
+    LOG_INFO("Loading image ", path);
+    assert(m_Renderer != nullptr);
+
+    auto surface = std::unique_ptr<SDL_Surface, decltype(&SDL_DestroySurface)>(
+        IMG_Load(path.c_str()), SDL_DestroySurface);
+
+    if (surface == nullptr) {
+      LOG_ERROR("IMG_Load failed to load ", path);
+      throw std::runtime_error("Failed to load resources");
+    }
+
+    m_Texture = std::unique_ptr<SDL_Texture, decltype(&SDL_DestroyTexture)>(
+        SDL_CreateTextureFromSurface(m_Renderer.get(), surface.get()),
+        SDL_DestroyTexture);
+    if (m_Texture == nullptr) {
+      LOG_ERROR("SDL_CreateTextureFromSurface failed");
+      throw std::runtime_error("Failed to load resources");
+    }
+    float w, h;
+    SDL_GetTextureSize(m_Texture.get(), &w, &h);
+    m_Size = {w, h};
+    m_ImageCenter = image_center;
+  }
+
+  // Renderer is shared for all class instances - we need it in order
+  // to create textures from images
+  static void SetRenderer(std::shared_ptr<SDL_Renderer> renderer) {
+    m_Renderer = renderer;
+  }
+
+  // GetTexture cannot return pointer to const, as SDL_RenderTexture modifies it
+  SDL_Texture *GetTexture() { return m_Texture.get(); }
+
+  Vec2D<float> GetSize() const { return m_Size; }
+  Vec2D<float> GetCenter() const { return m_ImageCenter; }
+
+private:
+  static std::shared_ptr<SDL_Renderer> m_Renderer;
+  std::unique_ptr<SDL_Texture, decltype(&SDL_DestroyTexture)> m_Texture;
+  Vec2D<float> m_Size;
+  Vec2D<float> m_ImageCenter;
+  float m_TextureWidth = 0;
+  float m_TextureHeight = 0;
+};
+std::shared_ptr<SDL_Renderer> Sprite::m_Renderer = nullptr;
+
+