16885975515

Committed 11 Aug 2025 04:25PM UTC coverage: 49.164% (+0.04%) from 49.127%

Build # 16885975515

Build Type

push

github

Committed by

Xevion

Commit Message

fix(emscripten): string pointer casting, fixup AssetError handling

Run Details

0 of 4 new or added lines in 2 files covered. (0.0%)

647 of 1316 relevant lines covered (49.16%)

364.72 hits per line

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/src/platform/emscripten.rs

//! Emscripten platform implementation.

use std::borrow::Cow;
use std::time::Duration;

use crate::asset::{Asset, AssetError};
use crate::platform::{Platform, PlatformError};

/// Emscripten platform implementation.
pub struct EmscriptenPlatform;

impl Platform for EmscriptenPlatform {
    fn sleep(&self, duration: Duration) {
        unsafe {
            emscripten_sleep(duration.as_millis() as u32);
        }
    }

    fn get_time(&self) -> f64 {
        unsafe { emscripten_get_now() }
    }

    fn init_console(&self) -> Result<(), PlatformError> {
        Ok(()) // No-op for Emscripten
    }

    fn get_canvas_size(&self) -> Option<(u32, u32)> {
        Some(unsafe { get_canvas_size() })
    }

    fn get_asset_bytes(&self, asset: Asset) -> Result<Cow<'static, [u8]>, AssetError> {
        use sdl2::rwops::RWops;
        use std::io::Read;

        let path = format!("assets/game/{}", asset.path());
        let mut rwops = RWops::from_file(&path, "rb").map_err(|_| AssetError::NotFound(asset.path().to_string()))?;

        let len = rwops.len().ok_or_else(|| AssetError::NotFound(asset.path().to_string()))?;

        let mut buf = vec![0u8; len];
        rwops
            .read_exact(&mut buf)
            .map_err(|e| AssetError::Io(std::io::Error::other(e)))?;

        Ok(Cow::Owned(buf))
    }
}

// Emscripten FFI functions
extern "C" {
    fn emscripten_get_now() -> f64;
    fn emscripten_sleep(ms: u32);
    fn emscripten_get_element_css_size(target: *const u8, width: *mut f64, height: *mut f64) -> i32;
}

unsafe fn get_canvas_size() -> (u32, u32) {
    let mut width = 0.0;
    let mut height = 0.0;
    emscripten_get_element_css_size(c"canvas".as_ptr().cast(), &mut width, &mut height);
    (width as u32, height as u32)
}

1	//! Emscripten platform implementation.
2
3	use std::borrow::Cow;
4	use std::time::Duration;
5
6	use crate::asset::{Asset, AssetError};
7	use crate::platform::{Platform, PlatformError};
8
9	/// Emscripten platform implementation.
10	pub struct EmscriptenPlatform;
11
12	impl Platform for EmscriptenPlatform {
13	fn sleep(&self, duration: Duration) {	×
14	unsafe {	×
15	emscripten_sleep(duration.as_millis() as u32);	×
16	}	×
17	}	×
18
19	fn get_time(&self) -> f64 {	×
20	unsafe { emscripten_get_now() }	×
21	}	×
22
23	fn init_console(&self) -> Result<(), PlatformError> {	×
24	Ok(()) // No-op for Emscripten	×
25	}	×
26
27	fn get_canvas_size(&self) -> Option<(u32, u32)> {	×
28	Some(unsafe { get_canvas_size() })	×
29	}	×
30
31	fn get_asset_bytes(&self, asset: Asset) -> Result<Cow<'static, [u8]>, AssetError> {	×
32	use sdl2::rwops::RWops;
33	use std::io::Read;
34
35	let path = format!("assets/game/{}", asset.path());	×
36	let mut rwops = RWops::from_file(&path, "rb").map_err(\|_\| AssetError::NotFound(asset.path().to_string()))?;	×
37
38	let len = rwops.len().ok_or_else(\|\| AssetError::NotFound(asset.path().to_string()))?;	×
39
40	let mut buf = vec![0u8; len];	×
41	rwops	×
42	.read_exact(&mut buf)	×
NEW 43	.map_err(\|e\| AssetError::Io(std::io::Error::other(e)))?;	×
44
45	Ok(Cow::Owned(buf))	×
46	}	×
47	}
48
49	// Emscripten FFI functions
50	extern "C" {
51	fn emscripten_get_now() -> f64;
52	fn emscripten_sleep(ms: u32);
53	fn emscripten_get_element_css_size(target: const u8, width: mut f64, height: *mut f64) -> i32;
54	}
55
56	unsafe fn get_canvas_size() -> (u32, u32) {	×
57	let mut width = 0.0;	×
58	let mut height = 0.0;	×
NEW 59	emscripten_get_element_css_size(c"canvas".as_ptr().cast(), &mut width, &mut height);	×
60	(width as u32, height as u32)	×
61	}	×

Xevion / Pac-Man / 16885975515

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