SimplestSDL2Sample.cpp

#include <SDL.h>
#include <iostream>
#include <algorithm>
using namespace std;

int main(int arc, char ** argv)
{
    SDL_Window* pWindow = NULL;
    SDL_Event event;
    SDL_Renderer *pRenderer = NULL;
    SDL_Texture* pTexture = NULL;
    SDL_Surface* pSprite = NULL;
    SDL_Rect dest;
    bool cont = true;
    int CurrentTime = 0, seconds = 0, PassedTime = 0;
    if (SDL_Init(SDL_INIT_VIDEO) < 0)
    {
        cout << "SDL could not initialize! SDL_Error: " << SDL_GetError() << endl;
    }
    else
    {
        pWindow = SDL_CreateWindow("SDL2 Test", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 800, 600, SDL_WINDOW_SHOWN);
    }
    pRenderer = SDL_CreateRenderer(pWindow, -1, SDL_RENDERER_ACCELERATED);
    if (pRenderer)
    {
        pSprite = SDL_LoadBMP("resource/deck/grid.bmp");
        if (pSprite)
        {
            pTexture = SDL_CreateTextureFromSurface(pRenderer, pSprite);
            if (pTexture)
            {
                dest = {0, 0, 800, 600}; //{800, 600, pSprite->w, pSprite->h }; //{ 640 / 2 - pSprite->w / 2,480 / 2 - pSprite->h / 2, pSprite->w, pSprite->h };
                SDL_RenderCopy(pRenderer, pTexture, NULL, &dest);
                SDL_RenderPresent(pRenderer);
            }
            else
            {
                cout << "Couldn't display image : " << SDL_GetError() << endl;
            }
        }
        else
        {
            cout << "Sprite loading error : " << SDL_GetError() <<endl;
        }
    }
    else
    {
        cout << "Couldn't create renderer : " << SDL_GetError() << endl;
    }
    while (cont != 0)
    {
        while (SDL_PollEvent(&event))
        {
            //SDL_FlushEvent(SDL_QUIT);
            switch (event.type)
            {
            case SDL_KEYDOWN:
                if (event.key.keysym.scancode == SDL_SCANCODE_ESCAPE)
                {
                    cout << "Quit" << endl;
                    cont = 0;
                }
                break;
            //case SDL_WINDOWEVENT:
            case SDL_QUIT:
                cont = false;
                break;
            default:
                break;
            }
        }
        SDL_RenderClear(pRenderer);
        SDL_RenderCopy(pRenderer, pTexture, NULL, &dest);
        SDL_RenderPresent(pRenderer);
        CurrentTime = SDL_GetTicks();
        if (CurrentTime - PassedTime > 1000)
        {
            seconds++;
            cout << seconds << endl;
            PassedTime = CurrentTime;
        }
    }
    SDL_DestroyTexture(pTexture);
    SDL_DestroyRenderer(pRenderer);
    SDL_FreeSurface(pSprite);
    return 0;
}