HendTetris/well.cpp at main · Heindric/HendTetris · GitHub

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#include "well.hpp"

Well::Well():
  data{{false}}
{
}

void Well::draw(SDL_Renderer *renderer)
{
  SDL_SetRenderDrawColor(renderer, 0xff, 0xff, 0xff, 0xff);
  for (auto x = 0; x < Width; ++x)
    for (auto y = 0; y < Height; ++y)
    {
      if (data[x][y])
      {
        SDL_Rect rect{ x * 720 / 2 / 10 + 1, y * 720 / 2 / 10 + 1, 720 / 2 / 10 - 2, 720 / 2 / 10 - 2};
        SDL_RenderFillRect(renderer, &rect);
      }
      else
        SDL_RenderDrawPoint(renderer, x * 720 / 2 / 10 + 720 / 2 / 10 / 2,
                              y * 720 / 2 / 10 + 720 / 2 / 10 / 2);
    }
}


bool Well::isCollision(const Tetromino &t) const
{
  for (int x = 0; x < 4; ++x)
    for (int y = 0; y < 4; ++y)
      if (t.isBlock(x, y))
      {
        auto wx = t.x() + x;
        auto wy = t.y() + y;
        if (wx < 0 || wx >= Width || wy < 0 || wy >= Height)
          return true;
        if (data[wx][wy])
          return true;
      }
  return false;
}

void Well::unite(const Tetromino &t)
{
  for (int x = 0; x < 4; ++x)
    for (int y = 0; y < 4; ++y)
      if (t.isBlock(x, y))
        data[t.x() + x][t.y() + y] = true;

  for (int y = Height - 1; y >= 0; --y)
  {
    bool solid = true;
    for (int x = 0; x < Width; ++x)
      if (!data[x][y])
      {
        solid = false;
        break;
      }
    if (solid)
    {
      for (int yy = y - 1; yy >= 0; --yy)
        for (int x = 0; x < Width; ++x)
          data[x][yy + 1] = data[x][yy];
      for (int x = 0; x < Width; ++x)
        data[x][0] = false;
    }
  }
}