游戏类 

class Sprite {
public:Sprite(int x, int y, int w, int h, const char* imagePath);~Sprite();void render(SDL_Renderer* renderer);void move(int x, int y);
private:SDL_Texture* texture_;SDL_Rect rect_;
};

物理引擎类

class PhysicsEngine {
public:PhysicsEngine();~PhysicsEngine();void applyForce(Sprite* sprite, float x, float y);void update(Sprite* sprite, float deltaTime);
};

游戏对象类

class GameObject {
public:virtual void update(float deltaTime) = 0;virtual void render(SDL_Renderer* renderer) = 0;
};

游戏函数

游戏初始化

bool init() {if (SDL_Init(SDL_INIT_VIDEO) < 0) {return false;}window_ = SDL_CreateWindow("Game", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, screenWidth_, screenHeight_, SDL_WINDOW_SHOWN);renderer_ = SDL_CreateRenderer(window_, -1, SDL_RENDERER_ACCELERATED);return true;
}

游戏主循环

void run() {bool quit = false;SDL_Event event;while (!quit) {float deltaTime = getDeltaTime();while (SDL_PollEvent(&event) != 0) {if (event.type == SDL_QUIT) {quit = true;}}update(deltaTime);render();}
}

游戏更新

void update(float deltaTime) {for (auto& gameObject : gameObjects_) {gameObject->update(deltaTime);}
}

游戏渲染
 

void render() {SDL_SetRenderDrawColor(renderer_, 0xFF, 0xFF, 0xFF, 0xFF);SDL_RenderClear(renderer_);for (auto& gameObject : gameObjects_) {gameObject->render(renderer_);}SDL_RenderPresent(renderer_);
}