#include "level.h"

texture_ptr Level::render(SDL_Renderer* ren, Layer layer) const
{
  texture_ptr canvas(
    SDL_CreateTexture(
      ren,
      SDL_PIXELFORMAT_RGBA8888,
      SDL_TEXTUREACCESS_TARGET,
      WINDOW_SIZE.w(),
      WINDOW_SIZE.h()));

  SDL_SetRenderTarget(ren, canvas.get());

  for (size_t y = 0; y < size_.h(); y++)
  {
    for (size_t x = 0; x < size_.w(); x++)
    {
      if (layer == Layer::map)
      {
        int val = 255 - at(x, y) * 10;

        SDL_SetRenderDrawColor(ren, val, val, val, 255);

        SDL_Rect rect {
          static_cast<int>(x * TILE_SIZE.w()),
          static_cast<int>(y * TILE_SIZE.h()),
          TILE_SIZE.w(),
          TILE_SIZE.h()
        };

        SDL_RenderFillRect(ren, &rect);
      }
    }
  }

  SDL_SetRenderTarget(ren, nullptr);

  return canvas;
}