xevion/rust-sdl2-emscripten
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Add fruit atlas frame change with spacebar

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Xevion
2024-04-14 17:43:34 -05:00
parent 1bffbaeb3c
commit bb018f1f6b
1 changed files with 12 additions and 15 deletions
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27
src/main.rs
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@@ -9,22 +9,15 @@ use sdl2::pixels::Color;
use sdl2::rect::{Point, Rect}; use sdl2::rect::{Point, Rect};
static BLACK: Color = Color::RGB(0, 0, 0); static BLACK: Color = Color::RGB(0, 0, 0);
static WHITE: Color = Color::RGB(255, 255, 255);
#[cfg(target_family = "wasm")]
pub mod emscripten;
fn main() { fn main() {
// #[cfg(target_os = "emscripten")]
// sdl2::hint::set("SDL_EMSCRIPTEN_ASYNCIFY","1");
let ctx = sdl2::init().unwrap(); let ctx = sdl2::init().unwrap();
let video_ctx = ctx.video().unwrap(); let video_ctx = ctx.video().unwrap();
let window = match video_ctx let window = match video_ctx
.window("Hello, Rust / SDL2 / WASM!", 640, 480) .window("Hello, Rust / SDL2 / WASM!", 640, 480)
.position_centered() .position_centered()
// .opengl() .opengl()
.build() .build()
{ {
Ok(window) => window, Ok(window) => window,
@@ -47,7 +40,9 @@ fn main() {
.load_texture("./assets/fruit.png") .load_texture("./assets/fruit.png")
.expect("could not load texture"); .expect("could not load texture");
let mut main_loop = move || { let mut frame = 0;
loop {
let mut moved = false; let mut moved = false;
for event in ctx.borrow_mut().event_pump().unwrap().poll_iter() { for event in ctx.borrow_mut().event_pump().unwrap().poll_iter() {
match event { match event {
@@ -61,6 +56,12 @@ fn main() {
Event::KeyDown { Event::KeyDown {
keycode: Some(key), .. keycode: Some(key), ..
} => match key { } => match key {
Keycode::Space => {
frame += 1;
if frame > 7 {
frame = 0;
}
}
Keycode::Left => { Keycode::Left => {
point.x -= 32; point.x -= 32;
moved = true; moved = true;
@@ -106,7 +107,7 @@ fn main() {
canvas canvas
.copy_ex( .copy_ex(
&fruit_atlas, &fruit_atlas,
Rect::new(0, 0, 32, 32), Rect::new(32 * frame, 0, 32, 32),
Rect::new(point.x, point.y, 32, 32), Rect::new(point.x, point.y, 32, 32),
0.0, 0.0,
Some(Point::new(0, 0)), Some(Point::new(0, 0)),
@@ -116,7 +117,7 @@ fn main() {
.expect("could not draw texture"); .expect("could not draw texture");
canvas.present(); canvas.present();
}; }
// #[cfg(target_family = "wasm")] // #[cfg(target_family = "wasm")]
// { // {
@@ -133,8 +134,4 @@ fn main() {
// sleep(Duration::from_millis(10)) // sleep(Duration::from_millis(10))
// } // }
// } // }
loop {
main_loop();
}
} }