From cda6101a3d41c628633398583cbdbbb8184e469f Mon Sep 17 00:00:00 2001 From: Braeden Sowinski Date: Thu, 8 Oct 2026 21:49:40 -0700 Subject: [PATCH] lab 03 --- labs/03/Cargo.lock | 519 +++++++++++++++++++++++++++++++++++++++++ labs/03/Cargo.toml | 35 +++ labs/03/LICENSE-APACHE | 201 ++++++++++++++++ labs/03/LICENSE-MIT | 25 ++ labs/03/README.md | 78 +++++++ labs/03/index.html | 29 +++ labs/03/index.js | 215 +++++++++++++++++ labs/03/src/lib.rs | 137 +++++++++++ labs/03/tests/web.rs | 13 ++ 9 files changed, 1252 insertions(+) create mode 100644 labs/03/Cargo.lock create mode 100644 labs/03/Cargo.toml create mode 100644 labs/03/LICENSE-APACHE create mode 100644 labs/03/LICENSE-MIT create mode 100644 labs/03/README.md create mode 100644 labs/03/index.html create mode 100644 labs/03/index.js create mode 100644 labs/03/src/lib.rs create mode 100644 labs/03/tests/web.rs diff --git a/labs/03/Cargo.lock b/labs/03/Cargo.lock new file mode 100644 index 0000000..63ff1f8 --- /dev/null +++ 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This is great for development, but requires +# all the `std::fmt` and `std::panicking` infrastructure, so isn't great for +# code size when deploying. +console_error_panic_hook = { version = "0.1.7", optional = true } +rand = "0.8" +getrandom = { version = "0.2", features = ["js"] } + +[dev-dependencies] +wasm-bindgen-test = "0.3.34" + +[profile.release] +# Tell `rustc` to optimize for small code size. +opt-level = "s" + +# The system `wasm-opt` (binaryen) here is too old to correctly handle the +# externref tables wasm-bindgen generates, and corrupts the table's growth +# limit, breaking initialization at runtime. Skip the wasm-opt pass. +[package.metadata.wasm-pack.profile.release] +wasm-opt = false diff --git a/labs/03/LICENSE-APACHE b/labs/03/LICENSE-APACHE new file mode 100644 index 0000000..11069ed --- /dev/null +++ b/labs/03/LICENSE-APACHE @@ -0,0 +1,201 @@ + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + +TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + +1. Definitions. + + "License" shall mean the terms and conditions for use, reproduction, + and distribution as defined by Sections 1 through 9 of this document. + + "Licensor" shall mean the copyright owner or entity authorized by + the copyright owner that is granting the License. + + "Legal Entity" shall mean the union of the acting entity and all + other entities that control, are controlled by, or are under common + control with that entity. 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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + +Copyright [yyyy] [name of copyright owner] + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. diff --git a/labs/03/LICENSE-MIT b/labs/03/LICENSE-MIT new file mode 100644 index 0000000..2a56e58 --- /dev/null +++ b/labs/03/LICENSE-MIT @@ -0,0 +1,25 @@ +Copyright (c) 2018 Braeden Sowinski + +Permission is hereby granted, free of charge, to any +person obtaining a copy of this software and associated +documentation files (the "Software"), to deal in the +Software without restriction, including without +limitation the rights to use, copy, modify, merge, +publish, distribute, sublicense, and/or sell copies of +the Software, and to permit persons to whom the Software +is furnished to do so, subject to the following +conditions: + +The above copyright notice and this permission notice +shall be included in all copies or substantial portions +of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF +ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED +TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A +PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT +SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY +CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR +IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER +DEALINGS IN THE SOFTWARE. diff --git a/labs/03/README.md b/labs/03/README.md new file mode 100644 index 0000000..315bda9 --- /dev/null +++ b/labs/03/README.md @@ -0,0 +1,78 @@ +
+ +

wasm-pack-template

+ + A template for kick starting a Rust and WebAssembly project using wasm-pack. + +

+ Tutorial + | + Chat +

+ + Built with Rust and WebAssembly by The Rust and WebAssembly Working Group +
+ +## About + +[Read this template tutorial][template-docs]. + +This template is designed for compiling Rust libraries into WebAssembly and +publishing the resulting package to NPM. + +Be sure to check out [other `wasm-pack` tutorials online][tutorials] for other +templates and usages of `wasm-pack`. + +[tutorials]: https://rustwasm.github.io/docs/wasm-pack/tutorials/index.html +[template-docs]: https://rustwasm.github.io/docs/wasm-pack/tutorials/npm-browser-packages/index.html + +## Usage + +### Use `wasm-pack new` to Clone this Template + +``` +wasm-pack new my-project +cd my-project +``` + +### Build with `wasm-pack build` + +``` +wasm-pack build +``` + +### Test in Headless Browsers with `wasm-pack test` + +``` +wasm-pack test --headless --firefox +``` + +### Publish to NPM with `wasm-pack publish` + +``` +wasm-pack publish +``` + +## Batteries Included + +* [`wasm-bindgen`](https://github.com/rustwasm/wasm-bindgen) for communicating + between WebAssembly and JavaScript. +* [`console_error_panic_hook`](https://github.com/rustwasm/console_error_panic_hook) + for logging panic messages to the developer console. +* `LICENSE-APACHE` and `LICENSE-MIT`: most Rust projects are licensed this way, so these are included for you. + +## License + +Licensed under either of + +* Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0) +* MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT) + +at your option. + +### Contribution + +Unless you explicitly state otherwise, any contribution intentionally +submitted for inclusion in the work by you, as defined in the Apache-2.0 +license, shall be dual licensed as above, without any additional terms or +conditions. diff --git a/labs/03/index.html b/labs/03/index.html new file mode 100644 index 0000000..8f2cc7a --- /dev/null +++ b/labs/03/index.html @@ -0,0 +1,29 @@ + + + + + Game of Life + + + +
+ + + +
+ + + + diff --git a/labs/03/index.js b/labs/03/index.js new file mode 100644 index 0000000..59ee581 --- /dev/null +++ b/labs/03/index.js @@ -0,0 +1,215 @@ +import init, { Cell, Universe } from "./pkg/lab3.js"; + +const CELL_SIZE = 10; // px +const GRID_COLOR = "#CCCCCC"; +const DEAD_COLOR = "#FFFFFF"; +const ALIVE_COLOR = "#000000"; +const DYING_COLOR = "#f23a3a" + +const { memory } = await init(); + +const universe = Universe.new(); +const width = universe.width(); +const height = universe.height(); + +const canvas = document.getElementById("game-of-life-canvas"); +canvas.height = (CELL_SIZE + 1) * height + 1; +canvas.width = (CELL_SIZE + 1) * width + 1; + +const ctx = canvas.getContext("2d"); + +const getIndex = (row, column) => row * width + column; + +const drawGrid = () => { + ctx.beginPath(); + ctx.strokeStyle = GRID_COLOR; + + for (let i = 0; i <= width; i++) { + ctx.moveTo(i * (CELL_SIZE + 1) + 1, 0); + ctx.lineTo(i * (CELL_SIZE + 1) + 1, (CELL_SIZE + 1) * height + 1); + } + + for (let j = 0; j <= height; j++) { + ctx.moveTo(0, j * (CELL_SIZE + 1) + 1); + ctx.lineTo((CELL_SIZE + 1) * width + 1, j * (CELL_SIZE + 1) + 1); + } + + ctx.stroke(); +}; + +const drawCells = () => { + const cellsPtr = universe.cells(); + const cells = new Uint8Array(memory.buffer, cellsPtr, width * height); + + ctx.beginPath(); + + for (let row = 0; row < height; row++) { + for (let col = 0; col < width; col++) { + const idx = getIndex(row, col); + + ctx.fillStyle = cells[idx] === Cell.Dead ? DEAD_COLOR : + cells[idx] === Cell.Dying ? DYING_COLOR : ALIVE_COLOR; + + ctx.fillRect( + col * (CELL_SIZE + 1) + 1, + row * (CELL_SIZE + 1) + 1, + CELL_SIZE, + CELL_SIZE, + ); + } + } + + ctx.stroke(); +}; + +let animationId = null; + +const isPaused = () => animationId === null; + +const renderLoop = () => { + universe.tick(); + + drawGrid(); + drawCells(); + + animationId = requestAnimationFrame(renderLoop); +}; + +const playPauseButton = document.getElementById("play-pause"); + +const play = () => { + playPauseButton.textContent = "⏸"; + renderLoop(); +}; + +const pause = () => { + playPauseButton.textContent = "▶"; + cancelAnimationFrame(animationId); + animationId = null; +}; + +playPauseButton.addEventListener("click", () => { + if (isPaused()) { + play(); + } else { + pause(); + } +}); + +const stepButton = document.getElementById("step"); + +stepButton.addEventListener("click", () => { + if (!isPaused()) { + pause(); + } + + universe.tick(); + + drawGrid(); + drawCells(); +}); + +const clearButton = document.getElementById("clear"); + +clearButton.addEventListener("click", () => { + universe.clear(); + + drawGrid(); + drawCells(); +}); + +const cellAtEvent = (event) => { + const boundingRect = canvas.getBoundingClientRect(); + + const scaleX = canvas.width / boundingRect.width; + const scaleY = canvas.height / boundingRect.height; + + const canvasLeft = (event.clientX - boundingRect.left) * scaleX; + const canvasTop = (event.clientY - boundingRect.top) * scaleY; + + const row = Math.min(Math.floor(canvasTop / (CELL_SIZE + 1)), height - 1); + const col = Math.min(Math.floor(canvasLeft / (CELL_SIZE + 1)), width - 1); + + return [row, col]; +}; + +// Bresenham's line algorithm, so fast drags don't leave gaps between cells. +const forEachCellOnLine = (row0, col0, row1, col1, callback) => { + let row = row0; + let col = col0; + + const dRow = Math.abs(row1 - row0); + const dCol = Math.abs(col1 - col0); + const stepRow = row1 > row0 ? 1 : -1; + const stepCol = col1 > col0 ? 1 : -1; + + let err = dRow - dCol; + + while (true) { + callback(row, col); + + if (row === row1 && col === col1) { + break; + } + + const err2 = err * 2; + + if (err2 > -dCol) { + err -= dCol; + row += stepRow; + } + + if (err2 < dRow) { + err += dRow; + col += stepCol; + } + } +}; + +let isDrawing = false; +let lastCell = null; + +canvas.addEventListener("mousedown", (event) => { + const [row, col] = cellAtEvent(event); + + isDrawing = true; + lastCell = [row, col]; + + universe.toggle_cell(row, col); + + drawGrid(); + drawCells(); +}); + +canvas.addEventListener("mousemove", (event) => { + if (!isDrawing) { + return; + } + + const [row, col] = cellAtEvent(event); + + if (row === lastCell[0] && col === lastCell[1]) { + return; + } + + forEachCellOnLine(lastCell[0], lastCell[1], row, col, (r, c) => { + universe.set_alive(r, c); + }); + + lastCell = [row, col]; + + drawGrid(); + drawCells(); +}); + +const stopDrawing = () => { + isDrawing = false; + lastCell = null; +}; + +window.addEventListener("mouseup", stopDrawing); +canvas.addEventListener("mouseleave", stopDrawing); + +drawGrid(); +drawCells(); +play(); diff --git a/labs/03/src/lib.rs b/labs/03/src/lib.rs new file mode 100644 index 0000000..a76603a --- /dev/null +++ b/labs/03/src/lib.rs @@ -0,0 +1,137 @@ +use rand::Rng; +use wasm_bindgen::prelude::*; + +#[wasm_bindgen] +#[derive(Clone, Copy, PartialEq, Eq)] +#[repr(u8)] +pub enum Cell { + Dead = 0, + Alive = 1, + Dying = 2, +} + +impl Cell { + pub fn toggle(&mut self) { + *self = if *self == Cell::Alive { + Cell::Dead + } else { + Cell::Alive + }; + } +} + +#[wasm_bindgen] +pub struct Universe { + width: u32, + height: u32, + cells: Vec, +} + +#[wasm_bindgen] +impl Universe { + pub fn new() -> Self { + let (width, height) = (64, 64); + let mut rng = rand::thread_rng(); + let cells = (0..width * height) + .map(|_| { + if rng.gen_range(0..2) == 0 { + Cell::Dead + } else { + Cell::Alive + } + }) + .collect(); + + Self { + width, + height, + cells, + } + } + + pub fn width(&self) -> u32 { + self.width + } + + pub fn height(&self) -> u32 { + self.height + } + + pub fn cells(&self) -> *const Cell { + self.cells.as_ptr() + } + + fn get_index(&self, row: u32, col: u32) -> usize { + (row * self.width + col) as usize + } + + fn count_live_neighbours(&self, row: u32, col: u32) -> u8 { + let mut count = 0; + for i in [self.height - 1, 0, 1] { + for j in [self.width - 1, 0, 1] { + if i == 0 && j == 0 { + continue; + } + let idx = self.get_index((row + i) % self.height, (col + j) % self.width); + count += self.cells[idx] as u8; + } + } + count + } + + pub fn tick(&mut self) { + let mut cells = self.cells.clone(); + for row in 0..self.height { + for col in 0..self.width { + let idx = self.get_index(row, col); + cells[idx] = match (self.cells[idx], self.count_live_neighbours(row, col)) { + (Cell::Alive, _) => Cell::Dying, + (Cell::Dying, _) => Cell::Dead, + (Cell::Dead, 2) => Cell::Alive, + _ => Cell::Dead, + } + } + } + self.cells = cells; + } + + pub fn render(&self) -> String { + self.to_string() + } + + pub fn toggle_cell(&mut self, row: u32, col: u32) { + let idx = self.get_index(row, col); + self.cells[idx].toggle(); + } + + pub fn set_alive(&mut self, row: u32, col: u32) { + let idx = self.get_index(row, col); + self.cells[idx] = Cell::Alive; + } + + pub fn clear(&mut self) { + for cell in self.cells.iter_mut() { + *cell = Cell::Dead; + } + } +} + +use std::fmt; + +impl fmt::Display for Universe { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + for row in 0..self.height { + for col in 0..self.width { + let idx = self.get_index(row, col); + let glyph = if self.cells[idx] == Cell::Alive { + '⬛' + } else { + '🔳' + }; + write!(f, "{glyph}"); + } + write!(f, "\n"); + } + Ok(()) + } +} diff --git a/labs/03/tests/web.rs b/labs/03/tests/web.rs new file mode 100644 index 0000000..de5c1da --- /dev/null +++ b/labs/03/tests/web.rs @@ -0,0 +1,13 @@ +//! Test suite for the Web and headless browsers. + +#![cfg(target_arch = "wasm32")] + +extern crate wasm_bindgen_test; +use wasm_bindgen_test::*; + +wasm_bindgen_test_configure!(run_in_browser); + +#[wasm_bindgen_test] +fn pass() { + assert_eq!(1 + 1, 2); +}