agb 0.15.0

#![no_std]
#![no_main]

use agb::display;

struct Vector2D {
    x: i32,
    y: i32,
}

#[agb::entry]
fn main(mut gba: agb::Gba) -> ! {
    let mut bitmap = gba.display.video.bitmap3();
    let vblank = agb::interrupt::VBlank::get();

    let mut input = agb::input::ButtonController::new();
    let mut pos = Vector2D {
        x: display::WIDTH / 2,
        y: display::HEIGHT / 2,
    };

    loop {
        vblank.wait_for_vblank();

        input.update();
        pos.x += input.x_tri() as i32;
        pos.y += input.y_tri() as i32;

        pos.x = pos.x.clamp(0, display::WIDTH - 1);
        pos.y = pos.y.clamp(0, display::HEIGHT - 1);
        bitmap.draw_point(pos.x, pos.y, 0x001F);
    }
}