module main

import gg
import automaton

const screen_width = 800
const screen_height = 600
const filled_color = gg.blue

@[live]
fn print_automaton(app &App) {
    square_size := 18
    for y := 1; y < app.a.field.maxy; y++ {
        for x := 1; x < app.a.field.maxx; x++ {
            cell := app.a.field.get(x, y)
            if cell == 1 {
                app.gg.draw_rect_filled(f32(square_size * x), f32(square_size * y),
                    f32(square_size), f32(square_size), filled_color)
            }
        }
    }
}

struct App {
mut:
    gg &gg.Context = unsafe { nil }
    a  automaton.Automaton
}

fn frame(mut app App) {
    app.gg.begin()
    app.a.update()
    print_automaton(app)
    app.gg.end()
}

fn main() {
    mut app := App{
        a: automaton.gun()
    }
    app.gg = gg.new_context(
        bg_color:      gg.white
        frame_fn:      frame
        user_data:     &app
        width:         screen_width
        height:        screen_height
        create_window: true
        resizable:     false
        window_title:  'v life (with gg)'
    )
    app.gg.run()
}