towlrdf.cpp

#include <cstdio>
#include <vector>
#include <utility>
#include <allegro.h>
using namespace std;

volatile bool close_button_pressed = false;
void close_button_callback() { close_button_pressed = true; }

volatile int ticks = 0;
void tick() { ++ticks; }
END_OF_FUNCTION(tick);

int main(int argc, char* argv[]) {
    allegro_init();
    install_mouse();

    set_color_depth(32);
    set_gfx_mode(GFX_AUTODETECT_WINDOWED, 400, 300, 0, 0);
    set_window_title("Towlrdf");
    enable_hardware_cursor();
    select_mouse_cursor(MOUSE_CURSOR_ARROW);
    show_mouse(screen);
    set_close_button_callback(close_button_callback);

    // ported directly from SDL

    vector<pair<int, int> > dots;
    int score = 0, timer = 0;
    int bg = makecol32(255, 255, 255);

    BITMAP* buffer = create_bitmap(400, 300);

    LOCK_FUNCTION(tick);
    install_int_ex(tick, MSEC_TO_TIMER(20));

    while(true) {
        if (close_button_pressed) break;

        if (score >= 20) break;

        if (++timer % 40 == 0) {
            dots.push_back(make_pair(0, (3*timer+521+7*(timer%31))%300));
            bg = makecol32(255, 255, 255);
        }

        clear_to_color(buffer, bg);
        for (size_t i = 0; i < dots.size(); ++i) {
            putpixel(buffer, dots[i].first, dots[i].second, makecol32(0, 0, 0));
            dots[i].first += 1;
            if (dots[i].first >= 400) {
                score = 0;
                dots.clear();
                bg = makecol32(0, 0, 0);
            }
            if(abs(dots[i].first - mouse_x) < 3 && abs(dots[i].second - mouse_y) < 3) {
                dots.erase(dots.begin() + i);
                ++score; --i;
            }
        }
        for (int a = -3; a <= 3; ++a) {
            putpixel(buffer, mouse_x + a, mouse_y, makecol32(0, 0, 0));
            putpixel(buffer, mouse_x, mouse_y + a, makecol32(0, 0, 0));
        }

        blit(buffer, screen, 0, 0, 0, 0, 400, 300);

        --ticks;
        while (ticks <= 0);// rest(0);
    }

    return 0;
}

END_OF_MAIN();