alex/agb
1
0
Fork 0
mirror of https://github.com/italicsjenga/agb.git synced 2025-01-11 09:31:34 +11:00
Code Issues Packages Projects Releases Wiki Activity

Allow movement of the affine background

Browse source
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
Show stats Download patch file Download diff file Expand all files Collapse all files

31
agb/examples/affine_background.rs
View file

@ -38,24 +38,29 @@ fn main(mut gba: agb::Gba) -> ! {
let mut input = agb::input::ButtonController::new();
let mut scroll_x = 0;
let mut scroll_y = 0;
loop {
input.update();
let x_dir = match input.x_tri() {
Tri::Positive => (1, 0).into(),
Tri::Negative => (-1, 0).into(),
_ => (0, 0).into(),
};
match input.x_tri() {
Tri::Positive => scroll_x += 1,
Tri::Negative => scroll_x -= 1,
_ => {}
}
let y_dir = match input.y_tri() {
Tri::Positive => (0, 1).into(),
Tri::Negative => (0, -1).into(),
_ => (0, 0).into(),
};
match input.y_tri() {
Tri::Positive => scroll_y += 1,
Tri::Negative => scroll_y -= 1,
_ => {}
}
let new_scroll_pos = bg.scroll_pos() + x_dir + y_dir;
bg.set_scroll_pos(new_scroll_pos);
bg.set_transform((0i16, 0i16).into(), (1, 1).into(), rotation);
bg.set_transform(
(-scroll_x as i16, -scroll_y as i16).into(),
(1, 1).into(),
rotation,
);
rotation += rotation_increase;
if rotation >= num!(255.) {