jess duck

build.rs

@@ -7,8 +7,7 @@ use image::{GenericImageView, ImageReader};
 fn main() {
     println!("cargo::rerun-if-changed=build.rs");
 
-    handle_image("cat");
-    handle_image("meow");
+    handle_image("duck");
 }
 
 fn handle_image(name: &str) {

src/lib.rs

-use bitvec::{order::Msb0, view::BitView};
-
-const WIDTH: i32 = 96;
-const HEIGHT: i32 = 38;
-
 #[no_mangle]
 pub extern "C" fn next_frame(frame: u16, ptr: *mut u8) -> u8 {
-    let out = unsafe { std::slice::from_raw_parts_mut(ptr, 456) }.view_bits_mut::<Msb0>();
+    let out = unsafe { std::slice::from_raw_parts_mut(ptr, 456) };
 
     if frame > 100 {
         return 1;
     }
 
-    let cat = include_bytes!(concat!(env!("OUT_DIR"), "/cat.bin")).view_bits::<Msb0>();
-    let meow = include_bytes!(concat!(env!("OUT_DIR"), "/meow.bin")).view_bits::<Msb0>();
-
-    let thres = WIDTH / 4;
-
-    let dx = (frame as i32 * 4 - thres).min(thres);
-
-    for x in 0..96 {
-        for y in 0..38 {
-            let out_idx = index(x, y);
-            let in_idx = index(x - dx, y);
-
-            out.set(out_idx, cat[in_idx]);
-        }
-    }
-
-    if dx == thres && frame / 7 % 2 == 0 {
-        // make meow flash on and off every 4 frames for the remaining time
-
-        for x in 0..96 {
-            for y in 0..38 {
-                let idx = index(x, y);
+    let duck = include_bytes!(concat!(env!("OUT_DIR"), "/duck.bin"));
 
-                out.set(idx, meow[idx] || out[idx]);
-            }
-        }
-    }
+    out.copy_from_slice(duck);
 
     0
 }
-
-fn index(x: i32, y: i32) -> usize {
-    if x < 0 || y < 0 || x >= WIDTH || y >= HEIGHT {
-        return 0;
-    }
-
-    x as usize + y as usize * WIDTH as usize
-}