void game_reset()

in procgen/src/games/miner.cpp [132:200]
51 lines of code
10 McCabe index (conditional complexity)

    void game_reset() override {
        BasicAbstractGame::game_reset();

        agent->rx = .5;
        agent->ry = .5;

        int main_area = main_height * main_width;

        options.center_agent = options.distribution_mode == MemoryMode;
        grid_step = true;

        float diamond_pct = 12 / 400.0f;
        float boulder_pct = 80 / 400.0f;

        int num_diamonds = (int)(diamond_pct * grid_size);
        int num_boulders = (int)(boulder_pct * grid_size);

        std::vector<int> obj_idxs = rand_gen.simple_choose(main_area, num_diamonds + num_boulders + 1);

        int agent_x = obj_idxs[0] % main_width;
        int agent_y = obj_idxs[0] / main_width;

        agent->x = agent_x + .5;
        agent->y = agent_y + .5;

        for (int i = 0; i < main_area; i++) {
            set_obj(i, DIRT);
        }

        for (int i = 0; i < num_diamonds; i++) {
            int cell = obj_idxs[i + 1];
            set_obj(cell, DIAMOND);
        }

        for (int i = 0; i < num_boulders; i++) {
            int cell = obj_idxs[i + 1 + num_diamonds];
            set_obj(cell, BOULDER);
        }

        std::vector<int> dirt_cells = get_cells_with_type(DIRT);

        set_obj(int(agent->x), int(agent->y), SPACE);

        for (int i = -1; i <= 1; i++) {
            for (int j = -1; j <= 1; j++) {
                int ox = agent_x + i;
                int oy = agent_y + j;
                if (get_obj(ox, oy) == BOULDER) {
                    set_obj(ox, oy, DIRT);
                }
            }
        }

        std::vector<int> exit_candidates;

        for (int cell : dirt_cells) {
            int above_obj = get_obj(cell + main_width);
            if (above_obj == DIRT || above_obj == out_of_bounds_object) {
                exit_candidates.push_back(cell);
            }
        }

        fassert(exit_candidates.size() > 0);

        int exit_cell = exit_candidates[rand_gen.randn((int)(exit_candidates.size()))];
        set_obj(exit_cell, SPACE);
        auto exit = add_entity((exit_cell % main_width) + .5, (exit_cell / main_width) + .5, 0, 0, .5, EXIT);
        exit->render_z = -1;
    }