Snake/SDL_utils.cpp at main · Hukkenberg/Snake · GitHub

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#include <iostream>
#include <SDL.h>

//*****************************************************
// Các hàm chung về khởi tạo và huỷ SDL
void logSDLError(std::ostream& os, const std::string &msg, bool fatal)
{
    os << msg << " Error: " << SDL_GetError() << std::endl;
    if (fatal) {
        SDL_Quit();
        exit(1);
    }
}

void initSDL(SDL_Window* &window, SDL_Renderer* &renderer, int screenWidth, int screenHeight, const char* windowTitle)
{
    if (SDL_Init(SDL_INIT_EVERYTHING) != 0)
        logSDLError(std::cout, "SDL_Init", true);

    window = SDL_CreateWindow(windowTitle, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, screenWidth, screenHeight, SDL_WINDOW_SHOWN);
    //window = SDL_CreateWindow(WINDOW_TITLE.c_str(), SDL_WINDOWPOS_CENTERED,
    //   SDL_WINDOWPOS_CENTERED, screenWidth, screenHeight, SDL_WINDOW_FULLSCREEN_DESKTOP);
    if (window == nullptr) logSDLError(std::cout, "CreateWindow", true);

    renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
    if (renderer == nullptr) logSDLError(std::cout, "CreateRenderer", true);

    SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear");
    SDL_RenderSetLogicalSize(renderer, screenWidth, screenHeight);
}

void quitSDL(SDL_Window* window, SDL_Renderer* renderer)
{
	SDL_DestroyRenderer(renderer);
	SDL_DestroyWindow(window);
	SDL_Quit();
}

void waitUntilKeyPressed()
{
    SDL_Event e;
    while (true)
    {
        if ( SDL_WaitEvent(&e) != 0 &&
            (e.type == SDL_KEYDOWN || e.type == SDL_QUIT) )
        return;
    SDL_Delay(100);
    }
}