From 9fd2b4d507539ad557804d4dfc76d0e8d9a73557 Mon Sep 17 00:00:00 2001 From: Gleb Koval Date: Tue, 9 Aug 2022 13:46:04 +0000 Subject: [PATCH] Initial connect-four wasm --- .woodpecker/frontend.yml | 1 + .woodpecker/wasm-connect-four-rust.yml | 47 ++ wasm/connect-four-rust/Cargo.lock | 198 ++++++++ wasm/connect-four-rust/Cargo.toml | 17 + wasm/connect-four-rust/LICENSE | 674 +++++++++++++++++++++++++ wasm/connect-four-rust/README.md | 3 + wasm/connect-four-rust/src/lib.rs | 192 +++++++ wasm/connect-four-rust/tests/web.rs | 5 + 8 files changed, 1137 insertions(+) create mode 100644 .woodpecker/wasm-connect-four-rust.yml create mode 100644 wasm/connect-four-rust/Cargo.lock create mode 100644 wasm/connect-four-rust/Cargo.toml create mode 100644 wasm/connect-four-rust/LICENSE create mode 100644 wasm/connect-four-rust/README.md create mode 100644 wasm/connect-four-rust/src/lib.rs create mode 100644 wasm/connect-four-rust/tests/web.rs diff --git a/.woodpecker/frontend.yml b/.woodpecker/frontend.yml index dee75af..5ab5caa 100644 --- a/.woodpecker/frontend.yml +++ b/.woodpecker/frontend.yml @@ -70,3 +70,4 @@ pipeline: ignore_message: "[ALL]" depends_on: - wasm-o-x-rust + - wasm-connect-four-rust diff --git a/.woodpecker/wasm-connect-four-rust.yml b/.woodpecker/wasm-connect-four-rust.yml new file mode 100644 index 0000000..e48d869 --- /dev/null +++ b/.woodpecker/wasm-connect-four-rust.yml @@ -0,0 +1,47 @@ +pipeline: + build: + image: git.koval.net/cyclane/game-algorithms/wasm-pack-plugin + pull: true + settings: + actions: build + folder: wasm/connect-four-rust + target: web + scope: game-algorithms + when: + path: + include: + - wasm/connect-four-rust/* + - .woodpecker/wasm-connect-four-rust.yml + ignore_message: "[ALL]" + test: + image: git.koval.net/cyclane/game-algorithms/wasm-pack-plugin + pull: true + settings: + actions: test + folder: wasm/connect-four-rust + when: + path: + include: + - wasm/connect-four-rust/* + - 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But first, please read +. diff --git a/wasm/connect-four-rust/README.md b/wasm/connect-four-rust/README.md new file mode 100644 index 0000000..b65e149 --- /dev/null +++ b/wasm/connect-four-rust/README.md @@ -0,0 +1,3 @@ +# Connect Four Rust + +This crate contains implementation(s) for connect four algorithm(s) for use on the frontend as WASM. diff --git a/wasm/connect-four-rust/src/lib.rs b/wasm/connect-four-rust/src/lib.rs new file mode 100644 index 0000000..55f9c1c --- /dev/null +++ b/wasm/connect-four-rust/src/lib.rs @@ -0,0 +1,192 @@ +use wasm_bindgen::prelude::wasm_bindgen; + +#[inline] +pub fn get_idx(w: usize, x: usize, y: usize) -> usize { + y * w + x +} + +#[inline] +pub fn get_x(w: usize, idx: usize) -> usize { + idx % w +} + +#[inline] +pub fn get_y(w: usize, idx: usize) -> usize { + idx / w +} + +#[inline] +pub fn get_diagonals(w: usize, board: &[u8], reverse: bool) -> Vec> { + let h = get_y(w, board.len()); + (0..w + h - 1).into_iter() + .map(|p| board.iter() + .enumerate() + .filter_map(|(idx, &v)| { + let x = get_x(w, idx); + let y = get_y(w, idx); + if (x + y == p && !reverse) || (w - x - 1 + y == p && reverse) { + Some(v) + } else { None } + }).collect() + ) + .collect() +} + +#[inline] +pub fn get_rows(w: usize, board: &[u8]) -> Vec> { + board.chunks(w) + .map(|c| c.to_vec()) + .collect() +} + +#[inline] +pub fn get_columns(w: usize, board: &[u8]) -> Vec> { + (0..w).into_iter() + .map(|target_x| board.iter() + .enumerate() + .filter_map(|(idx, &v)| { + let x = get_x(w, idx); + if x == target_x { + Some(v) + } else { None } + }).collect() + ) + .collect() +} + +#[inline] +pub fn test_chunks(chunks: &[Vec], min: usize) -> Option { + chunks.iter() + .find_map(|chunk| chunk.windows(min) + .find_map(|window| { + if window.iter() + .all(|&n| n == window[0] && n != 0) { + Some(window[0]) + } else { None } + }) + ) +} + +#[wasm_bindgen] +pub fn find_winner(w: usize, board: &[u8], min: usize) -> u8 { + let rows_test = test_chunks(&get_rows(w, board), min); + if let Some(winner) = rows_test { + return winner; + } + let cols_test = test_chunks(&get_columns(w, board), min); + if let Some(winner) = cols_test { + return winner; + } + let dia1_test = test_chunks(&get_diagonals(w, board, false), min); + if let Some(winner) = dia1_test { + return winner; + } + let dia2_test = test_chunks(&get_diagonals(w, board, true), min); + if let Some(winner) = dia2_test { + return winner; + } + 0 +} + +#[wasm_bindgen] +pub fn count_empty(board: &[u8]) -> usize { + board.iter().filter(|&n| *n == 0).count() +} + +#[wasm_bindgen] +pub fn get_turn(me: u8, other: u8, first: bool, empty: usize) -> u8 { + if empty % 2 == if first { 0 } else { 1 } { + me + } else { + other + } +} + +#[wasm_bindgen] +pub fn mm_get_score(me: u8, other: u8, first: bool, w: usize, board: &[u8], min: usize) -> f64 { + mm_sub_get_score(me, other, first, w, &board.to_vec(), min, board.len() as f64 + 1.0, 0.0, 0.0) +} + +#[wasm_bindgen] +pub fn mm_d_get_score(me: u8, other: u8, first: bool, w: usize, board: &[u8], min: usize) -> f64 { + mm_sub_get_score(me, other, first, w, &board.to_vec(), min, board.len() as f64 + 1.0, 0.0, 1.0) +} + +// m = score (without depth) multiplier +// dm = depth multiplier +pub fn mm_sub_get_score(me: u8, other: u8, first: bool, w: usize, board: &Vec, min: usize, m: f64, depth: f64, dm: f64) -> f64 { + let winner = find_winner(w, board, min); + if winner != 0 { + return if winner == me { m - depth*dm } else { -m + depth*dm }; + } + let empty = count_empty(board); + if empty == 0 { + return 0.0; + } + let turn = get_turn(me, other, first, empty); + let mut best = if turn == me { f64::MIN } else { f64::MAX }; + for (x, col) in get_columns(w, board).into_iter().enumerate() { + let r = col.into_iter() + .enumerate() + .filter_map(|(idx, v)| { + if v == 0 { + Some(idx) + } else { None } + }) + .rev() + .next(); + if let Some(y) = r { + let copy = &mut board.clone(); + copy[get_idx(w, x, y)] = get_turn(me, other, first, empty); + let value = mm_sub_get_score(me, other, first, w, copy, min, m, depth + 1.0, dm); + best = if turn == me { best.max(value) } else { best.min(value) }; + } + } + best +} + +// Algorithms: +// mm: minimax algorithm +// mm+d: minmax algorithm with depth +#[wasm_bindgen] +pub fn get_score(me: u8, other: u8, first: bool, w: usize, board: &[u8], min: usize, algorithm: &str) -> f64 { + match algorithm { + "mm" => mm_get_score(me, other, first, w, board, min), + "mm+d" => mm_d_get_score(me, other, first, w, board, min), + _ => 0.0 + } +} + +// Algorithms: +// mm: minimax algorithm +// mm+d: minmax algorithm with depth +#[wasm_bindgen] +pub fn predict(me: u8, other: u8, first: bool, w: usize, board: &[u8], min: usize, algorithm: &str) -> usize { + let (mut max_p, mut max_s) = (0, f64::MIN); + let empty = count_empty(board); + if empty == 0 { + return 0; + } + let vec_board = board.to_vec(); + for (x, col) in get_columns(w, board).into_iter().enumerate() { + let r = col.into_iter() + .enumerate() + .filter_map(|(idx, v)| { + if v == 0 { + Some(idx) + } else { None } + }) + .rev() + .next(); + if let Some(y) = r { + let copy = &mut vec_board.clone(); + copy[get_idx(w, x, y)] = get_turn(me, other, first, empty); + let score = get_score(me, other, first, w, copy, min, algorithm); + if score > max_s { + (max_p, max_s) = (x, score); + } + } + } + + max_p +} diff --git a/wasm/connect-four-rust/tests/web.rs b/wasm/connect-four-rust/tests/web.rs new file mode 100644 index 0000000..df2b50c --- /dev/null +++ b/wasm/connect-four-rust/tests/web.rs @@ -0,0 +1,5 @@ +extern crate wasm_bindgen_test; + +use wasm_bindgen_test::wasm_bindgen_test; +use connect_four_rust::*; +