// playfield_grid.cpp - Implementació de la grilla de fons
// © 2026 JailDesigner

#include "core/graphics/playfield_grid.hpp"

#include "core/defaults.hpp"
#include "core/rendering/line_renderer.hpp"

namespace Graphics {

    PlayfieldGrid::PlayfieldGrid(Rendering::Renderer* renderer)
        : renderer_(renderer) {}

    void PlayfieldGrid::draw() const {
        const SDL_FRect& zona = Defaults::Zones::PLAYAREA;
        const float CELL_W = zona.w / static_cast<float>(Defaults::Grid::COLUMNS);
        const float CELL_H = zona.h / static_cast<float>(Defaults::Grid::ROWS);

        const int X1 = static_cast<int>(zona.x);
        const int Y1 = static_cast<int>(zona.y);
        const int X2 = static_cast<int>(zona.x + zona.w);
        const int Y2 = static_cast<int>(zona.y + zona.h);

        // Línies verticals interiors (i=1..COLUMNS-1: no repetim el border)
        for (int i = 1; i < Defaults::Grid::COLUMNS; i++) {
            const int X = static_cast<int>(zona.x + (static_cast<float>(i) * CELL_W));
            Rendering::linea(renderer_, X, Y1, X, Y2, Defaults::Grid::BRIGHTNESS);
        }

        // Línies horitzontals interiors (j=1..ROWS-1: no repetim el border)
        for (int j = 1; j < Defaults::Grid::ROWS; j++) {
            const int Y = static_cast<int>(zona.y + (static_cast<float>(j) * CELL_H));
            Rendering::linea(renderer_, X1, Y, X2, Y, Defaults::Grid::BRIGHTNESS);
        }
    }

}  // namespace Graphics