Function.cpp

#include<iostream>
#include "Function.h"

using namespace std;

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 SCREEN_WIDTH, int SCREEN_HEIGHT, const string &WINDOW_TITLE)
{
    if (SDL_Init(SDL_INIT_EVERYTHING) != 0)
        logSDLError(std::cout, "SDL_Init", true);

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


    //Khi thông thường chạy với môi trường bình thường ở nhà
    renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED |
                                              SDL_RENDERER_PRESENTVSYNC);
    //Khi chạy ở máy thực hành WinXP ở trường (máy ảo)
    //renderer = SDL_CreateSoftwareRenderer(SDL_GetWindowSurface(window));
    if (renderer == nullptr) logSDLError(std::cout, "CreateRenderer", true);

    SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear");
    SDL_RenderSetLogicalSize(renderer, SCREEN_WIDTH, SCREEN_HEIGHT);
}

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);
    }
}