use glam::IVec2;
use gsa::{run, Gsa, FACE_DOWN, FACE_LEFT, FACE_RIGHT, SCREEN_HEIGHT, SCREEN_MIDDLE, SCREEN_WIDTH};

struct Game {}

fn init(gsa: &mut Gsa) -> Game {
    gsa.bg[0].fill(0x7101);
    //gsa.write_string(IVec2::ONE, "Hello world nyaa~");
    gsa.bg[0].rot = 10;
    gsa.bg[0].origin = SCREEN_MIDDLE;
    gsa.bg[0].scroll = SCREEN_MIDDLE;
    Game {}
}

fn update(_game: &mut Game, gsa: &mut Gsa) {
    if gsa.button_down(FACE_LEFT) {
        gsa.bg[0].rot = gsa.bg[0].rot.wrapping_add(1);
    }
    if gsa.button_down(FACE_RIGHT) {
        gsa.bg[0].rot = gsa.bg[0].rot.wrapping_sub(1);
    }
    //gsa.bg[0].scroll.x = (gsa.bg[0].scroll.x + 10) % 300;
    gsa.bg[0].scroll += gsa.input_dir();
}

run!(init, update);