#include <SDL2/SDL.h>
#include <iostream>

namespace sdltemplate {

SDL_Color bkg;
SDL_Color blue = {0,0,255,255};

const char *title = "SDL2 Template";
int width = 500, height = 500;
SDL_Renderer *renderer;
SDL_Window *window;
SDL_Texture *screen;
SDL_Rect screensize;
int frameCount, timerFPS, lastFrame, fps, lastTime;
int setFPS = 60;
SDL_Point mouse;
const Uint8 *keystates;
Uint32 mousestate;
SDL_Event event;
bool running;

SDL_Color createColor(Uint8 r, Uint8 g, Uint8 b, Uint8 a) {
 SDL_Color c{r,g,b,a};
 return c;
}

void sdl() {
  SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "0");
  SDL_Init(SDL_INIT_EVERYTHING);
  window =
      SDL_CreateWindow(title, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
                       width, height, SDL_WINDOW_SHOWN);
  renderer = SDL_CreateRenderer(
      window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
  SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_BLEND);
  running = 1;
  screensize.x=screensize.y=0;
  screensize.w=width;screensize.h=height;
  screen = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGBA8888, SDL_TEXTUREACCESS_TARGET, width, height);
}

void drawPoint(SDL_Point p) { SDL_RenderDrawPoint(renderer, p.x, p.y); }
void drawPoint(int x, int y) { SDL_RenderDrawPoint(renderer, x, y); }

void sdl(const char *t, int w, int h) {
  title = t;
  width = w;
  height = h;
  sdl();
}

void updateKeys() {
  keystates = SDL_GetKeyboardState(NULL);
  while (SDL_PollEvent(&event)) {
    if (event.type == SDL_QUIT)
      running = false;
  }
  mousestate = SDL_GetMouseState(&mouse.x, &mouse.y);
}

void setDrawColor(SDL_Color c) { SDL_SetRenderDrawColor(renderer, c.r, c.g, c.b, c.a); }

void begin_render() {
  SDL_SetRenderTarget(renderer, screen);
}

void end_render() {
  SDL_SetRenderTarget(renderer, NULL);
  SDL_RenderCopy(renderer, screen, &screensize, &screensize);
  SDL_RenderPresent(renderer);
}

void quit() {
  running = 0;
  SDL_DestroyRenderer(renderer);
  SDL_DestroyTexture(screen);
  SDL_DestroyWindow(window);
  SDL_Quit();
}

void loop() {
  end_render();
  updateKeys();
  begin_render();
}


} // namespace sdltemplate