From 87c4385febbdcd419779efccff4a5bc8b621c4e1 Mon Sep 17 00:00:00 2001
From: Rob Hand <146272+sinon@users.noreply.github.com>
Date: Thu, 24 Jul 2025 21:17:41 +0100
Subject: [PATCH] WIP: Yew frontend
---
Cargo.lock | 1076 ++++++++++++++++++++++++++-
Cargo.toml | 2 +-
crates/chip8-interpreter/src/lib.rs | 15 +
crates/frontend/.gitignore | 1 +
crates/frontend/Cargo.toml | 12 +
crates/frontend/NOTES.md | 16 +
crates/frontend/index.html | 22 +
crates/frontend/src/main.rs | 31 +
8 files changed, 1167 insertions(+), 8 deletions(-)
create mode 100644 crates/frontend/.gitignore
create mode 100644 crates/frontend/Cargo.toml
create mode 100644 crates/frontend/NOTES.md
create mode 100644 crates/frontend/index.html
create mode 100644 crates/frontend/src/main.rs
diff --git a/Cargo.lock b/Cargo.lock
index 26cee88..7e6273d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,21 @@
# It is not intended for manual editing.
version = 4
+[[package]]
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@@ -58,18 +73,66 @@ dependencies = [
"windows-sys 0.59.0",
]
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@@ -140,7 +203,7 @@ dependencies = [
"heck",
"proc-macro2",
"quote",
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+ "syn 2.0.98",
]
[[package]]
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"static_assertions",
]
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@@ -215,7 +288,7 @@ dependencies = [
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"quote",
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+ "boolinator",
+ "once_cell",
+ "prettyplease",
+ "proc-macro-error",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.98",
+]
diff --git a/Cargo.toml b/Cargo.toml
index 9895b57..fb6f019 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,5 +1,5 @@
[workspace]
-members = ["crates/chip8-interpreter", "crates/chip8-cli"]
+members = ["crates/chip8-interpreter", "crates/chip8-cli", "crates/frontend"]
resolver = "2"
[workspace.package]
diff --git a/crates/chip8-interpreter/src/lib.rs b/crates/chip8-interpreter/src/lib.rs
index 53dd412..085c2a1 100644
--- a/crates/chip8-interpreter/src/lib.rs
+++ b/crates/chip8-interpreter/src/lib.rs
@@ -4,6 +4,8 @@
#![no_std]
#![allow(clippy::cast_possible_truncation, clippy::cast_sign_loss)]
+use core::fmt;
+
const RAM_SIZE: usize = 4096;
// The original implementation of the Chip-8 language used a 64x32-pixel monochrome display with this format:
pub const SCREEN_HEIGHT: usize = 32;
@@ -94,6 +96,19 @@ impl rustler::Resource for Chip8Emulator {}
#[rustler::resource_impl]
impl Chip8Emulator {}
+impl fmt::Display for Chip8Emulator {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ for line in self.display.as_slice().chunks(SCREEN_WIDTH) {
+ for &segment in line {
+ let symbol = if segment == true { '◻' } else { '◼' };
+ write!(f, "{}", symbol)?;
+ }
+ write!(f, "\n")?;
+ }
+ Ok(())
+ }
+}
+
impl Chip8Emulator {
#[must_use]
pub fn new() -> Self {
diff --git a/crates/frontend/.gitignore b/crates/frontend/.gitignore
new file mode 100644
index 0000000..7773828
--- /dev/null
+++ b/crates/frontend/.gitignore
@@ -0,0 +1 @@
+dist/
\ No newline at end of file
diff --git a/crates/frontend/Cargo.toml b/crates/frontend/Cargo.toml
new file mode 100644
index 0000000..856ba75
--- /dev/null
+++ b/crates/frontend/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "frontend"
+authors.workspace = true
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+homepage.workspace = true
+repository.workspace = true
+
+[dependencies]
+yew = { version = "0.21.0", features = ["csr"] }
+chip8-interpreter = { path = "../chip8-interpreter" }
diff --git a/crates/frontend/NOTES.md b/crates/frontend/NOTES.md
new file mode 100644
index 0000000..56c32d9
--- /dev/null
+++ b/crates/frontend/NOTES.md
@@ -0,0 +1,16 @@
+Serve html from Yew with:
+`trunk serve --open`
+
+Next steps:
+- Investigate:
+ - `wasm_bindgen`
+ - Look at creating the js file using [requestAnimationFrame](https://developer.mozilla.org/en-US/docs/Web/API/Window/requestAnimationFrame) to create the needed render loop for calling `emu.tick()`
+
+
+Links:
+
+- https://rustwasm.github.io/docs/book/game-of-life/hello-world.html
+- https://github.com/rustwasm/create-wasm-app
+- https://github.com/rustwasm/wasm-pack-template
+- https://yew.rs/docs/getting-started/build-a-sample-app
+- https://alexcrichton.github.io/wasm-bindgen/examples/2d-canvas.html
\ No newline at end of file
diff --git a/crates/frontend/index.html b/crates/frontend/index.html
new file mode 100644
index 0000000..9fcbfb5
--- /dev/null
+++ b/crates/frontend/index.html
@@ -0,0 +1,22 @@
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/crates/frontend/src/main.rs b/crates/frontend/src/main.rs
new file mode 100644
index 0000000..3d2999f
--- /dev/null
+++ b/crates/frontend/src/main.rs
@@ -0,0 +1,31 @@
+use chip8_interpreter::Chip8Emulator;
+use yew::{prelude::*, virtual_dom::VNode};
+
+#[function_component(App)]
+fn app() -> Html {
+ let mut emu = Chip8Emulator::new();
+ let pong = include_bytes!("../../roms/PONG");
+ emu.load_data(pong);
+ let display: Vec = emu
+ .to_string()
+ .split("\n")
+ .into_iter()
+ .map(|row| {
+ html! {
+ {format!("{row}")}
+ }
+ })
+ .collect();
+ html! {
+ <>
+ { "Chip8 Emulator state" }
+
+ {display}
+
+
+ }
+}
+
+fn main() {
+ yew::Renderer::::new().render();
+}