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Allow movement of the affine background

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This commit is contained in:
Gwilym Kuiper 2022-08-12 00:02:10 +01:00
parent 97e3948f32
commit fcde651821
1 changed files with 18 additions and 13 deletions
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31
agb/examples/affine_background.rs
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@ -38,24 +38,29 @@ fn main(mut gba: agb::Gba) -> ! {
let mut input = agb::input::ButtonController::new(); let mut input = agb::input::ButtonController::new();
let mut scroll_x = 0;
let mut scroll_y = 0;
loop { loop {
input.update(); input.update();
let x_dir = match input.x_tri() { match input.x_tri() {
Tri::Positive => (1, 0).into(), Tri::Positive => scroll_x += 1,
Tri::Negative => (-1, 0).into(), Tri::Negative => scroll_x -= 1,
_ => (0, 0).into(), _ => {}
}; }
let y_dir = match input.y_tri() { match input.y_tri() {
Tri::Positive => (0, 1).into(), Tri::Positive => scroll_y += 1,
Tri::Negative => (0, -1).into(), Tri::Negative => scroll_y -= 1,
_ => (0, 0).into(), _ => {}
}; }
let new_scroll_pos = bg.scroll_pos() + x_dir + y_dir; bg.set_transform(
bg.set_scroll_pos(new_scroll_pos); (-scroll_x as i16, -scroll_y as i16).into(),
bg.set_transform((0i16, 0i16).into(), (1, 1).into(), rotation); (1, 1).into(),
rotation,
);
rotation += rotation_increase; rotation += rotation_increase;
if rotation >= num!(255.) { if rotation >= num!(255.) {