Add link to playable version

Fix blank letter at end-of-game bug
Add some mitigations against blank letter bug
2024-02-11 12:11:50 -08:00 · 2023-10-13 21:56:02 -07:00 · 2023-10-13 21:30:06 -07:00 · 2023-10-13 21:16:16 -07:00 · 2023-10-03 20:32:47 -07:00 · 2023-09-27 20:03:52 -07:00
21 changed files with 4659 additions and 1072 deletions
--- a/Cargo.toml
+++ b/Cargo.toml
@ -2,6 +2,10 @@
 name = "word_grid"
 version = "0.1.0"
 edition = "2021"
 authors = ["Joel Therrien"]
 repository = "https://git.joeltherrien.ca/joel/WordGrid"
 license = "AGPL-3"
 description = "A (WIP) package for playing 'WordGrid'."
 [lib]
 crate-type = ["cdylib"]
@ -12,7 +16,7 @@ rand = {version = "0.8.5", features = ["small_rng"]}
 getrandom = {version = "0.2", features = ["js"]}
 wasm-bindgen = { version = "0.2.87", features = ["serde-serialize"] }
 serde_json = "1.0"
-serde = { version = "1.0.181", features = ["derive"] }
+serde = { version = "=1.0.171", features = ["derive"] }
-serde-wasm-bindgen = "0.4"
+serde-wasm-bindgen = "0.4.5"
 tsify = { version = "0.4.5", features = ["js"] }
--- a/661
+++ b/661
@ -0,0 +1,661 @@
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    (at your option) any later version.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.
    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 Also add information on how to contact you by electronic and paper mail.
  If your software can interact with users remotely through a computer
 network, you should also make sure that it provides a way for users to
 get its source.  For example, if your program is a web application, its
 interface could display a "Source" link that leads users to an archive
 of the code.  There are many ways you could offer source, and different
 solutions will be better for different programs; see section 13 for the
 specific requirements.
  You should also get your employer (if you work as a programmer) or school,
 if any, to sign a "copyright disclaimer" for the program, if necessary.
 For more information on this, and how to apply and follow the GNU AGPL, see
 <https://www.gnu.org/licenses/>.
--- a/10
+++ b/10
@ -1,2 +1,10 @@
-build:
+build-all: build-rust build-ui
 build-rust:
 	wasm-pack build --target=web
 build-ui:
 	rm -rf ui/dist ui/.parcel-cache
 	cd ui; npm run build
 build-all: build-rust build-ui
--- a/README.md
+++ b/README.md
@ -0,0 +1,24 @@
 # README
 This repository contains the code for 'WordGrid', a (currently) single-player browser game where you use letter tiles to form words.
 Game logic resides in `src/` as Rust code, which gets compiled into WebAssembly. 
 UI logic resides in `ui/src/`, which gets bundled by Parcel into the web application.
 If you want to try it now, I host a version at https://joeltherrien.ca/wordgrid
 ## Setup
 * Make sure you have [Node.js](https://nodejs.org/en) installed and [rustup and Cargo](https://www.rust-lang.org/learn/get-started).
 1. Clone this repository.
 2. If not already installed, install the Rust `wasm32-unknown-unknown` target with `rustup target add wasm32-unknown-unknown`.
 3. In the base project directory, run `make build-all` to build both the Rust wasm project (gets stored in `pkg/`) and the final bundled web files (gets stored in `ui/dist/`). 
 4. Place the files in `ui/dist/` onto a web server and access them.
 During development, you'll often want to serve the UI component in serve mode that auto-updates when you make a change. In the `ui/` directory you can run `npm run start`. Note that Parcel doesn't always detect changes to the compiled Rust code, so if you recompile the Rust code with changes you should delete `ui/.parcel-cache/` and `ui/dist/` or else the UI may continue to use older WASM. 
 ## Future Plans
 I intend on building a multiplayer component to this game, where the Rust code will form a webserver for connecting players and the UI will make server calls instead of calling web assembly. 
--- a/src/board.rs
+++ b/src/board.rs
@ -1,18 +1,20 @@
 use std::collections::HashSet;
 use std::fmt;
 use std::fmt::{Formatter, Write};
 use std::borrow::BorrowMut;
 use serde::{Deserialize, Serialize};
 use tsify::Tsify;
 use crate::constants::{ALL_LETTERS_BONUS, GRID_LENGTH, TRAY_LENGTH};
 use crate::dictionary::DictionaryImpl;
 #[derive(Clone, Copy)]
-enum Direction {
+pub enum Direction {
    Row, Column
 }
 impl Direction {
-    fn invert(&self) -> Self {
+    pub fn invert(&self) -> Self {
        match &self {
            Direction::Row => {Direction::Column}
            Direction::Column => {Direction::Row}
@ -20,7 +22,7 @@ impl Direction {
    }
 }
-#[derive(Clone, Copy, Debug)]
+#[derive(Clone, Copy, Debug, Eq, PartialEq, Hash)]
 pub struct Coordinates (pub u8, pub u8);
 impl Coordinates {
@ -45,20 +47,20 @@ impl Coordinates {
        }
    }
-    fn increment(&self, direction: Direction) -> Option<Self>{
+    pub fn increment(&self, direction: Direction) -> Option<Self>{
        self.add(direction, 1)
    }
-    fn decrement(&self, direction: Direction) -> Option<Self>{
+    pub fn decrement(&self, direction: Direction) -> Option<Self>{
        self.add(direction, -1)
    }
-    fn map_to_index(&self) -> usize {
+    pub fn map_to_index(&self) -> usize {
        (self.0 + GRID_LENGTH*self.1) as usize
    }
 }
-#[derive(Debug, Copy, Clone, Serialize, Deserialize, Tsify)]
+#[derive(Debug, Copy, Clone, Serialize, Deserialize, Tsify, PartialEq, Eq, Hash)]
 #[tsify(from_wasm_abi)]
 pub struct Letter {
    pub text: char,
@ -98,6 +100,10 @@ impl Letter {
        }
    }
    pub fn partial_match(&self, other: &Letter) -> bool {
        self == other || (self.is_blank && other.is_blank && self.points == other.points)
    }
 }
 #[derive(Debug, Copy, Clone, Serialize)]
@ -141,7 +147,7 @@ impl<'a> ToString for Word<'a> {
 impl <'a> Word<'a> {
-    fn calculate_score(&self) -> u32{
+    pub fn calculate_score(&self) -> u32{
        let mut multiplier = 1;
        let mut unmultiplied_score = 0;
@ -328,11 +334,9 @@ impl Board {
        let starting_row = *rows_played.iter().min().unwrap();
        let starting_column = *columns_played.iter().min().unwrap();
-        let mut starting_coords = Coordinates(starting_row, starting_column);
+        let starting_coords = Coordinates(starting_row, starting_column);
        let main_word = self.find_word_at_position(starting_coords, direction).unwrap();
        starting_coords = main_word.coords;
        let mut words = Vec::new();
        let mut observed_tiles_played = 0;
@ -387,7 +391,7 @@ impl Board {
        }
    }
-    fn find_word_at_position(&self, mut start_coords: Coordinates, direction: Direction) -> Option<Word> {
+    pub fn find_word_at_position(&self, mut start_coords: Coordinates, direction: Direction) -> Option<Word> {
        // let's see how far we can backtrack to the start of the word
        let mut times_moved = 0;
        loop {
@ -441,7 +445,7 @@ impl Board {
    pub fn receive_play(&mut self, play: Vec<(Letter, Coordinates)>) -> Result<(), String> {
        for (mut letter, coords) in play {
            {
-                let mut cell = match self.get_cell_mut(coords) {
+                let cell = match self.get_cell_mut(coords) {
                    Ok(cell) => {cell}
                    Err(e) => {return Err(e.to_string())}
                };
@ -458,6 +462,16 @@ impl Board {
        Ok(())
    }
    pub fn fix_tiles(&mut self) {
        for cell in self.cells.iter_mut() {
            match cell.value.borrow_mut() {
                None => {}
                Some(x) => {
                    x.ephemeral = false;
                }
            }
        }
    }
 }
 impl fmt::Display for Board {
--- a/src/game.rs
+++ b/src/game.rs
@ -1,9 +1,14 @@
 use std::collections::HashMap;
 use rand::prelude::SliceRandom;
 use rand::rngs::SmallRng;
 use rand::SeedableRng;
-use crate::board::{Board, Letter};
+use serde::{Deserialize, Serialize};
 use tsify::Tsify;
 use crate::board::{Board, Coordinates, Letter};
 use crate::constants::{standard_tile_pool, TRAY_LENGTH};
 use crate::dictionary::{Dictionary, DictionaryImpl};
-use crate::player_interaction::ai::Difficulty;
+use crate::player_interaction::ai::{AI, CompleteMove, Difficulty};
 use crate::player_interaction::Tray;
 pub enum Player {
@ -11,73 +16,513 @@ pub enum Player {
    AI{
        name: String,
        difficulty: Difficulty,
        object: AI,
    }
 }
 impl Player {
    pub fn get_name(&self) -> &str {
        match &self {
            Player::Human(name) => {name}
            Player::AI { name, .. } => {name}
        }
    }
 }
 pub struct PlayerState {
-    player: Player,
+    pub player: Player,
    pub score: u32,
    pub tray: Tray
 }
 #[derive(Deserialize, Tsify, Copy, Clone, Debug)]
 #[tsify(from_wasm_abi)]
 pub struct PlayedTile {
    pub index: usize,
    pub character: Option<char>, // we only set this if PlayedTile is a blank
 }
 impl PlayedTile {
    pub fn convert_tray(tray_tile_locations: &Vec<Option<PlayedTile>>, tray: &Tray) -> Vec<(Letter, Coordinates)> {
        let mut played_letters: Vec<(Letter, Coordinates)> = Vec::new();
        for (i, played_tile) in tray_tile_locations.iter().enumerate() {
            if played_tile.is_some() {
                let played_tile = played_tile.unwrap();
                let mut letter: Letter = tray.letters.get(i).unwrap().unwrap();
                let coord = Coordinates::new_from_index(played_tile.index);
                if letter.is_blank {
                    match played_tile.character {
                        None => {
                            panic!("You can't play a blank character without providing a letter value")
                        }
                        Some(x) => {
                            // TODO - check that x is a valid alphabet letter
                            letter.text = x;
                        }
                    }
                }
                played_letters.push((letter, coord));
            }
        }
        played_letters
    }
 }
 #[derive(Debug, Serialize, Deserialize, Tsify)]
 #[tsify(from_wasm_abi)]
 pub struct WordResult {
    word: String,
    score: u32,
-    tray: Tray
+}
 #[derive(Debug, Serialize, Deserialize, Tsify)]
 #[tsify(from_wasm_abi)]
 pub struct ScoreResult {
    words: Vec<WordResult>,
    total: u32,
 }
 pub struct PlayerStates(pub Vec<PlayerState>);
 impl PlayerStates {
    fn get_player_name_by_turn_id(&self, id: usize) -> &str {
        let id_mod = id % self.0.len();
        let state = self.0.get(id_mod).unwrap();
        state.player.get_name()
    }
    pub fn get_player_state(&self, name: &str) -> Option<&PlayerState> {
        self.0.iter()
            .filter(|state| state.player.get_name().eq(name))
            .nth(0)
    }
    pub fn get_player_state_mut(&mut self, name: &str) -> Option<&mut PlayerState> {
        self.0.iter_mut()
            .filter(|state| state.player.get_name().eq(name))
            .nth(0)
    }
    pub fn get_tray(&self, name: &str) -> Option<&Tray> {
        let player = self.get_player_state(name)?;
        Some(&player.tray)
    }
    pub fn get_tray_mut(&mut self, name: &str) -> Option<&mut Tray> {
        let player = self.get_player_state_mut(name)?;
        Some(&mut player.tray)
    }
 }
 #[derive(Deserialize, Serialize, Tsify, Debug, Clone)]
 #[tsify(from_wasm_abi)]
 #[serde(tag = "type")]
 pub enum GameState {
    InProgress,
    Ended {
        finisher: Option<String>,
        remaining_tiles: HashMap<String, Vec<Letter>>,
    },
 }
 pub struct Game{
-    tile_pool: Vec<Letter>,
+    pub tile_pool: Vec<Letter>,
    rng: SmallRng,
    board: Board,
-    player: PlayerState,
+    pub player_states: PlayerStates,
    dictionary: DictionaryImpl,
    turn_order: usize,
    turns_not_played: usize,
    state: GameState,
 }
 // Problem - I want to provide a UI to the player
 // Ideally they would get some kind of 'tray' object with methods to use and run
 // However I want the main game state to live in Rust, not in JS.
 // Does this mean I provide Rc<RefCell<Tray>>?
 // Other option - what if I just have one Game object that exposes all methods.
 // At no point do they get a Tray reference that auto-updates, they need to handle that
 // I just provide read-only JSON of everything, and they call the methods for updates
 // This will later work out well when I build it out as an API for multiplayer.
 impl Game {
-    pub fn new(seed: u64, dictionary_text: &str) -> Self {
+    pub fn new(seed: u64, dictionary_text: &str, player_names: Vec<String>, ai_difficulties: Vec<Difficulty>) -> Self {
        let mut rng = SmallRng::seed_from_u64(seed);
        let mut letters = standard_tile_pool(Some(&mut rng));
        let dictionary = DictionaryImpl::create_from_str(dictionary_text);
        let mut player_states: Vec<PlayerState> = player_names.iter()
            .map(|name| {
                let mut tray = Tray::new(TRAY_LENGTH);
                tray.fill(&mut letters);
-
+                PlayerState {
-
+                    player: Player::Human(name.clone()),
        let player = PlayerState {
            player: Player::Human("Joel".to_string()),
                    score: 0,
                    tray,
                }
            })
            .collect();
        let ai_length = ai_difficulties.len();
        for (i, ai_difficulty) in ai_difficulties.into_iter().enumerate() {
            let ai = AI::new(ai_difficulty, &dictionary);
            let mut tray = Tray::new(TRAY_LENGTH);
            tray.fill(&mut letters);
            let ai_player_name = if ai_length > 1 {
                format!("AI {}", i+1)
            } else {
                "AI".to_string()
            };
            player_states.push(PlayerState {
                player: Player::AI {
                    name: ai_player_name,
                    difficulty: ai_difficulty,
                    object: ai,
                },
                score: 0,
                tray,
            });
        }
        // let's shuffle player_states so that humans don't always go first
        player_states.shuffle(&mut rng);
        Game {
            tile_pool: letters,
            rng,
            board: Board::new(),
-            player,
+            player_states: PlayerStates(player_states),
-            dictionary: DictionaryImpl::create_from_str(dictionary_text)
+            dictionary,
            turn_order: 0,
            turns_not_played: 0,
            state: GameState::InProgress,
        }
    }
    pub fn get_tray(&self) -> &Tray {
        &self.player.tray
    }
    pub fn get_tray_mut(&mut self) -> &mut Tray {
        &mut self.player.tray
    }
    pub fn get_board(&self) -> &Board {&self.board}
-    pub fn get_board_mut(&mut self) -> &mut Board {
+    pub fn set_board(&mut self, new_board: Board) {
-        &mut self.board
+        self.board = new_board;
    }
    fn fill_trays(&mut self){
        for state in self.player_states.0.iter_mut() {
            let tray = &mut state.tray;
            tray.fill(&mut self.tile_pool);
        }
    }
    pub fn get_dictionary(&self) -> &DictionaryImpl {
        &self.dictionary
    }
    fn verify_game_in_progress(&self) -> Result<(), String> {
        if !matches!(self.state, GameState::InProgress) {
            return Err("Moves cannot be made after a game has finished".to_string());
        }
        Ok(())
    }
    pub fn receive_play(&mut self, tray_tile_locations: Vec<Option<PlayedTile>>, commit_move: bool) -> Result<(TurnAction, GameState), String> {
        self.verify_game_in_progress()?;
        let player = self.current_player_name();
        let mut board_instance = self.get_board().clone();
        let mut tray = self.player_states.get_tray(&player).unwrap().clone();
        let played_letters: Vec<(Letter, Coordinates)> = PlayedTile::convert_tray(&tray_tile_locations, &tray);
        for (i, played_tile) in tray_tile_locations.iter().enumerate() {
            if played_tile.is_some() {
                *tray.letters.get_mut(i).unwrap() = None;
            }
        }
        board_instance.receive_play(played_letters)?;
        let x = board_instance.calculate_scores(self.get_dictionary())?;
        let total_score = x.1;
        let words: Vec<WordResult> = x.0.iter()
            .map(|(word, score)| {
                WordResult {
                    word: word.to_string(),
                    score: *score
                }
            })
            .collect();
        if commit_move {
            let player_state = self.player_states.get_player_state_mut(&player).unwrap();
            player_state.score += total_score;
            player_state.tray = tray;
            board_instance.fix_tiles();
            self.set_board(board_instance);
            self.fill_trays();
            self.increment_turn(true);
            if self.get_player_tile_count(&player).unwrap() == 0 {
                // game is over
                self.end_game(Some(player));
            }
        }
        Ok((TurnAction::PlayTiles {
            result: ScoreResult {
                words,
                total: total_score,
            },
        }, self.state.clone()))
    }
    pub fn exchange_tiles(&mut self, tray_tile_locations: Vec<bool>) -> Result<(Tray, TurnAction, GameState), String> {
        self.verify_game_in_progress()?;
        let player = self.current_player_name();
        let tray = match self.player_states.get_tray_mut(&player) {
            None => {return Err(format!("Player {} not found", player))}
            Some(x) => {x}
        };
        if tray.letters.len() != tray_tile_locations.len() {
            return Err("Incoming tray and existing tray have different lengths".to_string());
        }
        let tile_pool = &mut self.tile_pool;
        let mut tiles_exchanged = 0;
        for (i, played_tile) in tray_tile_locations.iter().enumerate() {
            if *played_tile {
                let letter = tray.letters.get_mut(i).unwrap();
                if letter.is_some() {
                    tile_pool.push(letter.unwrap().clone());
                    *letter = None;
                    tiles_exchanged += 1;
                }
            }
        }
        tile_pool.shuffle(&mut self.rng);
        tray.fill(&mut self.tile_pool);
        let tray = tray.clone();
        let state = self.increment_turn(false);
        Ok((tray, TurnAction::ExchangeTiles { tiles_exchanged }, state.clone()))
    }
    pub fn add_word(&mut self, word: String) {
        let word = word.to_uppercase();
        self.dictionary.insert(word, -1.0);
    }
    pub fn pass(&mut self) -> Result<GameState, String> {
        self.verify_game_in_progress()?;
        Ok(self.increment_turn(false).clone())
    }
    fn increment_turn(&mut self, played: bool) -> &GameState{
        self.turn_order += 1;
        if !played {
            self.turns_not_played += 1;
            // check if game has ended due to passing
            if self.turns_not_played >= 2*self.player_states.0.len() {
                self.end_game(None);
            }
        } else {
            self.turns_not_played = 0;
        }
        &self.state
    }
    fn end_game(&mut self, finisher: Option<String>) {
        let mut finished_letters_map = HashMap::new();
        let mut points_forfeit = 0;
        for player in self.player_states.0.iter_mut() {
            let tray = &mut player.tray;
            let mut letters_remaining = Vec::new();
            let mut player_points_lost = 0;
            for letter in tray.letters.iter_mut() {
                if let Some(letter) = letter {
                    player_points_lost += letter.points;
                    letters_remaining.push(letter.clone());
                }
                *letter = None;
            }
            points_forfeit += player_points_lost;
            player.score -= player_points_lost;
            finished_letters_map.insert(player.player.get_name().to_string(), letters_remaining);
        }
        if let Some(finisher) = &finisher {
            let mut state = self.player_states.get_player_state_mut(finisher).unwrap();
            state.score += points_forfeit;
        }
        self.state = GameState::Ended {
            finisher,
            remaining_tiles: finished_letters_map
        };
    }
    pub fn current_player_name(&self) -> String {
        self.player_states.get_player_name_by_turn_id(self.turn_order).to_string()
    }
    pub fn advance_turn(&mut self) -> Result<(TurnAdvanceResult, GameState), String> {
        let current_player = self.current_player_name();
        let state = self.player_states.get_player_state_mut(&current_player).ok_or("There should be a player available")?;
        if let Player::AI {object, .. } = &mut state.player {
            let tray = &mut state.tray;
            let best_move = object.find_best_move(tray, &self.board, &mut self.rng);
            //let best_move: Option<CompleteMove> = None;
            match best_move {
                None => {
                    // no available moves; exchange all tiles
                    let mut to_exchange = Vec::with_capacity(TRAY_LENGTH as usize);
                    for tile_spot in tray.letters.iter() {
                        match tile_spot {
                            None => {
                                to_exchange.push(false);
                            },
                            Some(_) => {
                                to_exchange.push(true);
                            }
                        }
                    }
                    if self.tile_pool.is_empty(){
                        let game_state = self.increment_turn(false);
                        Ok((TurnAdvanceResult::AIMove {
                            name: current_player,
                            action: TurnAction::Pass,
                        }, game_state.clone()))
                    } else {
                        let (_, action, game_state) = self.exchange_tiles(to_exchange)?;
                        Ok((TurnAdvanceResult::AIMove {
                            name: current_player,
                            action,
                        }, game_state))
                    }
                }
                Some(best_move) => {
                    let play = best_move.convert_to_play(tray);
                    let (action, game_state) = self.receive_play(play, true)?;
                    Ok((TurnAdvanceResult::AIMove {
                        name: current_player,
                        action,
                    }, game_state))
                }
            }
        } else {
            Ok((TurnAdvanceResult::HumanInputRequired{name: self.current_player_name()}, self.state.clone()))
        }
    }
    pub fn get_remaining_tiles(&self) -> usize {
        self.tile_pool.len()
    }
    pub fn get_player_tile_count(&self, player: &str) -> Result<usize, String> {
        let tray = match self.player_states.get_tray(&player) {
            None => {return Err(format!("Player {} not found", player))}
            Some(x) => {x}
        };
        Ok(
            tray.count()
        )
    }
 }
 #[derive(Serialize, Deserialize, Tsify, Debug)]
 #[tsify(from_wasm_abi)]
 #[serde(tag = "type")]
 pub enum TurnAction {
    Pass,
    ExchangeTiles{
        tiles_exchanged: usize
    },
    PlayTiles{
        result: ScoreResult
    },
 }
 #[derive(Serialize, Deserialize, Tsify, Debug)]
 #[tsify(from_wasm_abi)]
 #[serde(tag = "type")]
 pub enum TurnAdvanceResult {
    HumanInputRequired{
        name: String
    },
    AIMove{
        name: String,
        action: TurnAction,
    }
 }
 #[cfg(test)]
 mod tests {
    use std::fs;
    use crate::game::Game;
    use crate::player_interaction::ai::Difficulty;
    #[test]
    fn test_game() {
        let seed = 124;
        let dictionary_path = "resources/dictionary.csv";
        let dictionary_string = fs::read_to_string(dictionary_path).unwrap();
        let mut game = Game::new(seed, &dictionary_string, vec!["Player".to_string()], vec![Difficulty{proportion: 0.5, randomness: 0.0}]);
        let current_player = game.current_player_name();
        println!("Current player is {current_player}");
        assert_eq!(current_player, "Player");
        assert_eq!(0, game.turns_not_played);
        game.increment_turn(false);
        assert_eq!(1, game.turns_not_played);
        assert_eq!(game.current_player_name(), "AI");
        let result = game.advance_turn();
        println!("AI move is {result:?}");
        assert_eq!(game.current_player_name(), "Player");
        assert_eq!(0, game.turns_not_played);
    }
 }
--- a/src/player_interaction.rs
+++ b/src/player_interaction.rs
@ -5,7 +5,7 @@ use crate::board::Letter;
 pub mod ai;
-#[derive(Debug, Serialize, Deserialize, Tsify)]
+#[derive(Debug, Serialize, Deserialize, Tsify, Clone)]
 #[tsify(from_wasm_abi)]
 pub struct Tray {
    pub letters: Vec<Option<Letter>>
@ -36,6 +36,12 @@ impl Tray {
        }
    }
    pub fn count(&self) -> usize {
        self.letters.iter()
            .filter(|l| l.is_some())
            .count()
    }
 }
--- a/src/player_interaction/ai.rs
+++ b/src/player_interaction/ai.rs
--- a/src/wasm.rs
+++ b/src/wasm.rs
@ -3,8 +3,9 @@ use serde_wasm_bindgen::Error;
 use tsify::Tsify;
 use wasm_bindgen::JsValue;
 use wasm_bindgen::prelude::wasm_bindgen;
-use crate::board::{Board, CellType, Coordinates, Letter};
+use crate::board::{CellType, Letter};
-use crate::game::Game;
+use crate::game::{Game, GameState, PlayedTile};
 use crate::player_interaction::ai::Difficulty;
 #[wasm_bindgen]
 pub struct GameWasm(Game);
@ -18,30 +19,30 @@ pub enum ResponseType {
 #[derive(Serialize, Deserialize, Tsify)]
 #[tsify(from_wasm_abi)]
-pub struct MyResult<E> {
+pub struct MyResult<E: Serialize> {
    response_type: ResponseType,
    value: E,
    game_state: Option<GameState>,
 }
-#[derive(Deserialize, Tsify, Copy, Clone)]
+
-#[tsify(from_wasm_abi)]
+
 pub struct PlayedTile {
    index: usize,
    character: Option<char>,
 }
 #[wasm_bindgen]
 impl GameWasm {
    #[wasm_bindgen(constructor)]
-    pub fn new(seed: u64, dictionary_text: &str) -> GameWasm {
+    pub fn new(seed: u64, dictionary_text: &str, ai_difficulty: JsValue) -> GameWasm {
-        GameWasm(Game::new(seed, dictionary_text))
+
        let difficulty: Difficulty = serde_wasm_bindgen::from_value(ai_difficulty).unwrap();
        GameWasm(Game::new(seed, dictionary_text, vec!["Player".to_string()], vec![difficulty]))
    }
-    pub fn get_tray(&self) -> Result<JsValue, Error> {
+    pub fn get_tray(&self, name: &str) -> Result<JsValue, Error> {
-        let tray = self.0.get_tray();
+        let tray = self.0.player_states.get_tray(name);
-        serde_wasm_bindgen::to_value(tray)
+        serde_wasm_bindgen::to_value(&tray)
    }
    pub fn get_board_cell_types(&self) -> Result<JsValue, Error> {
@ -54,84 +55,159 @@ impl GameWasm {
        serde_wasm_bindgen::to_value(&cell_types)
    }
-    pub fn receive_play(&mut self, tray_tile_locations: JsValue, commit_move: bool) -> Result<JsValue, JsValue> {
+    pub fn get_board_letters(&self) -> Result<JsValue, Error> {
        let board = self.0.get_board();
        let letters: Vec<Option<Letter>> = board.cells.iter().map(|cell| -> Option<Letter> {
            cell.value.clone()
        }).collect();
        serde_wasm_bindgen::to_value(&letters)
    }
    pub fn receive_play(&mut self, tray_tile_locations: JsValue, commit_move: bool) -> Result<JsValue, Error> {
        let tray_tile_locations: Vec<Option<PlayedTile>> = serde_wasm_bindgen::from_value(tray_tile_locations)?;
-        let mut board_instance = self.0.get_board().clone();
+        let result = self.0.receive_play(tray_tile_locations, commit_move);
        let tray = self.0.get_tray().clone();
-        let mut played_letters: Vec<(Letter, Coordinates)> = Vec::new();
+        match result {
-        for (i, played_tile) in tray_tile_locations.iter().enumerate() {
+            Ok((x, game_state)) => {
-            if played_tile.is_some() {
+                serde_wasm_bindgen::to_value(&MyResult {
-                let played_tile = played_tile.unwrap();
+                    response_type: ResponseType::OK,
-                let mut letter: Letter = tray.letters.get(i).unwrap().unwrap();
+                    value: x,
-
+                    game_state: Some(game_state)
-                let coord = Coordinates::new_from_index(played_tile.index);
+                })
                if letter.is_blank {
                    match played_tile.character {
                        None => {
                            panic!("You can't play a blank character without providing a letter value")
                        }
                        Some(x) => {
                            // TODO - I should check that the character is a valid letter
                            letter.text = x;
                        }
                    }
                }
                played_letters.push((letter, coord));
            }
        }
        match board_instance.receive_play(played_letters) {
            Err(e) => {
                return Ok(serde_wasm_bindgen::to_value(
                &MyResult {
                    response_type: ResponseType::ERR,
                    value: e
                }).unwrap());
            },
-            Ok(_) => {}
+            Err(e) => {
                serde_wasm_bindgen::to_value(&MyResult {
                    response_type: ResponseType::ERR,
                    value: e,
                    game_state: None,
                })
            }
        }
-        #[derive(Debug, Serialize, Deserialize, Tsify)]
+
    }
    pub fn get_scores(&self) -> Result<JsValue, JsValue> {
        #[derive(Serialize, Deserialize, Tsify)]
        #[tsify(from_wasm_abi)]
-        struct WordResult {
+        pub struct PlayerAndScore {
-            word: String,
+            name: String,
            score: u32,
        }
-        let result = board_instance.calculate_scores(self.0.get_dictionary());
+        let scores: Vec<PlayerAndScore> = self.0.player_states.0.iter()
-        let result = match result {
+            .map(|player_state| {
-            Ok(x) => {
+                PlayerAndScore {
-                let words: Vec<WordResult> = x.0.iter()
+                    name: player_state.player.get_name().to_string(),
-                    .map(|(word, score)| {
+                    score: player_state.score,
                        WordResult {
                            word: word.to_string(),
                            score: *score
                }
            })
            .collect();
                //let total_score = x.1;
-                serde_wasm_bindgen::to_value(
+        Ok(serde_wasm_bindgen::to_value(&scores)?)
-                &MyResult {
+
    }
    pub fn exchange_tiles(&mut self, tray_tile_locations: JsValue) -> Result<JsValue, Error>{
        let tray_tile_locations: Vec<bool> = serde_wasm_bindgen::from_value(tray_tile_locations)?;
        match self.0.exchange_tiles(tray_tile_locations) {
            Ok((_, turn_action, state)) => {
                serde_wasm_bindgen::to_value(&MyResult {
                    response_type: ResponseType::OK,
-                    value: words
+                    value: turn_action,
-                }).unwrap()
+                    game_state: Some(state),
-
+                })
            },
            Err(e) => {
-                serde_wasm_bindgen::to_value(
+                serde_wasm_bindgen::to_value(&MyResult {
                &MyResult {
                    response_type: ResponseType::ERR,
-                    value: e
+                    value: e,
-                }).unwrap()
+                    game_state: None,
                })
            }
        }
        };
        Ok(result)
    }
    pub fn add_word(&mut self, word: String) {
        self.0.add_word(word);
    }
    pub fn skip_turn(&mut self) -> Result<JsValue, Error>{
        let result = self.0.pass();
        match result {
            Ok(game_state) => {
                Ok(serde_wasm_bindgen::to_value(&MyResult {
                    response_type: ResponseType::OK,
                    value: "Turn passed",
                    game_state: Some(game_state),
                })?)
            },
            Err(e) => {
                Ok(serde_wasm_bindgen::to_value(&MyResult {
                    response_type: ResponseType::ERR,
                    value: e,
                    game_state: None,
                })?)
            }
        }
    }
    pub fn advance_turn(&mut self) -> Result<JsValue, Error> {
        let result = self.0.advance_turn();
        match result {
            Ok((turn_advance_result, game_state)) => {
                Ok(serde_wasm_bindgen::to_value(&MyResult {
                    response_type: ResponseType::OK,
                    value: turn_advance_result,
                    game_state: Some(game_state),
                })?)
            },
            Err(e) => {
                Ok(serde_wasm_bindgen::to_value(&MyResult {
                    response_type: ResponseType::ERR,
                    value: e,
                    game_state: None,
                })?)
            }
        }
    }
    pub fn get_current_player(&self) -> String {
        self.0.current_player_name()
    }
    pub fn get_remaining_tiles(&self) -> usize {
        self.0.get_remaining_tiles()
    }
    pub fn get_player_tile_count(&self, player: &str) -> Result<JsValue, Error> {
        match self.0.get_player_tile_count(player) {
            Ok(count) => {
                Ok(serde_wasm_bindgen::to_value(&MyResult{
                    response_type: ResponseType::OK,
                    value: count,
                    game_state: None,
                })?)
            },
            Err(msg) => {
                Ok(serde_wasm_bindgen::to_value(&MyResult{
                    response_type: ResponseType::OK,
                    value: msg,
                    game_state: None,
                })?)
            }
        }
    }
 }
--- a/ui/package-lock.json
+++ b/ui/package-lock.json
--- a/ui/package.json
+++ b/ui/package.json
@ -10,5 +10,9 @@
    "@types/react-dom": "^18.2.7",
    "parcel": "^2.9.3",
    "process": "^0.11.10"
  },
  "scripts": {
    "start": "parcel src/index.html",
    "build": "parcel build --public-url ./ src/index.html"
  }
 }
--- a/ui/src/Game.tsx
+++ b/ui/src/Game.tsx
@ -0,0 +1,557 @@
 import * as React from "react";
 import {useEffect, useMemo, useReducer, useRef, useState} from "react";
 import {
    GameState,
    GameWasm,
    MyResult,
    PlayedTile,
    PlayerAndScore,
    ScoreResult,
    Tray,
    TurnAction,
    TurnAdvanceResult
 } from "../../pkg/word_grid";
 import {
    Direction,
    GRID_LENGTH,
    GridArrowData,
    GridArrowDispatchAction,
    GridArrowDispatchActionType,
    HighlightableLetterData,
    LocationType,
    matchCoordinate,
    mergeTrays,
    PlayableLetterData,
    Settings,
    TileDispatchAction,
    TileDispatchActionType
 } from "./utils";
 import {TileExchangeModal} from "./TileExchange";
 import {Grid, Scores, TileTray} from "./UI";
 function addLogInfo(existingLog: React.JSX.Element[], newItem: React.JSX.Element) {
    newItem = React.cloneElement(newItem, { key:  existingLog.length })
    existingLog.push(newItem);
    return existingLog.slice();
 }
 export function Game(props: {
    wasm: GameWasm,
    settings: Settings,
    end_game_fn: () => void,
 }) {
    const cellTypes = useMemo(() => {
        return props.wasm.get_board_cell_types();
    }, []);
    const [isGameOver, setGameOver] = useState<boolean>(false);
    const [confirmedScorePoints, setConfirmedScorePoints] = useState<number>(-1);
    const [boardLetters, setBoardLetters] = useState<HighlightableLetterData[]>(() => {
        const newLetterData = [] as HighlightableLetterData[];
        for(let i=0; i<GRID_LENGTH * GRID_LENGTH; i++) {
            newLetterData.push(undefined);
        }
        return newLetterData;
    });
    function adjustGridArrow(existing: GridArrowData, update: GridArrowDispatchAction): GridArrowData {
        console.log({update});
        if(update.action == GridArrowDispatchActionType.CLEAR) {
            return null;
        } else if (update.action == GridArrowDispatchActionType.CYCLE) {
            // if there's nothing where the user clicked, we create a right arrow.
            if(existing == null || existing.position != update.position) {
                return {
                    direction: Direction.RIGHT, position: update.position
                }
            // if there's a right arrow, we shift to downwards
            } else if(existing.direction == Direction.RIGHT) {
                return {
                    direction: Direction.DOWN, position: existing.position
                }
            // if there's a down arrow, we clear it
            } else if (existing.direction == Direction.DOWN){
                return null;
            }
        } else if (update.action == GridArrowDispatchActionType.SHIFT) {
            if(existing == null) {
                // no arrow to shift
                return null;
            } else {
                let current_x = existing.position % GRID_LENGTH;
                let current_y = Math.floor(existing.position / GRID_LENGTH);
                // we loop because we want to skip over letters that are already set
                while (current_x < GRID_LENGTH && current_y < GRID_LENGTH) {
                    if(existing.direction == Direction.RIGHT) {
                        current_x += 1;
                    } else {
                        current_y += 1;
                    }
                    const new_position = current_x + current_y * GRID_LENGTH;
                    let tray_letter_at_position = false; // need to also check if the player put a letter in the spot
                    for (const letter of update.playerLetters) {
                        if (letter != null && letter.location == LocationType.GRID && letter.index == new_position) {
                            tray_letter_at_position = true;
                            break
                        }
                    }
                    if(current_x < GRID_LENGTH && current_y < GRID_LENGTH && boardLetters[new_position] == null && !tray_letter_at_position) {
                        return {
                            direction: existing.direction,
                            position: new_position,
                        }
                    }
                }
                // if we reached this point without returning then we went off the board, remove arrow
                return null;
            }
        }
    }
    function exchangeFunction(selectedArray: Array<boolean>) {
        const result: MyResult<TurnAction | string> = props.wasm.exchange_tiles(selectedArray);
        if(result.response_type === "ERR") {
            logDispatch(<div><em>{(result.value as string)}</em></div>);
        } else {
            handlePlayerAction(result.value as TurnAction, props.settings.playerName);
            setTurnCount(turnCount + 1);
            if(result.game_state.type === "Ended") {
                endGame(result.game_state);
            }
        }
    }
    function addWordFn(word: string) {
        props.wasm.add_word(word);
    }
    const [gridArrow, gridArrowDispatch] = useReducer(adjustGridArrow, null);
    const [logInfo, logDispatch] = useReducer(addLogInfo, []);
    function movePlayableLetters(playerLetters: PlayableLetterData[], update: TileDispatchAction) {
        if(update.action === TileDispatchActionType.RETRIEVE) {
            let tray: Tray = props.wasm.get_tray("Player");
            if(update.override) {
                playerLetters = [];
            }
            return mergeTrays(playerLetters, tray.letters);
        } else if (update.action === TileDispatchActionType.MOVE) {
            let startIndex = matchCoordinate(playerLetters, update.start);
            let endIndex = matchCoordinate(playerLetters, update.end);
            if(startIndex != null) {
                let startLetter = playerLetters[startIndex];
                startLetter.location = update.end.location;
                startLetter.index = update.end.index;
            }
            if(endIndex != null) {
                let endLetter = playerLetters[endIndex];
                endLetter.location = update.start.location;
                endLetter.index = update.start.index;
            }
            setConfirmedScorePoints(-1);
            return playerLetters.slice();
        } else if (update.action === TileDispatchActionType.SET_BLANK) {
            const blankLetter = playerLetters[update.blankIndex];
            if(blankLetter.text !== update.newBlankValue) {
                blankLetter.text = update.newBlankValue;
                if (blankLetter.location == LocationType.GRID) {
                    setConfirmedScorePoints(-1);
                }
            }
            return playerLetters.slice();
        } else if (update.action === TileDispatchActionType.RETURN) {
            gridArrowDispatch({action: GridArrowDispatchActionType.CLEAR});
            return mergeTrays(playerLetters, playerLetters);
        } else if (update.action === TileDispatchActionType.MOVE_TO_ARROW) {
            // let's verify that the arrow is defined, otherwise do nothing
            if(gridArrow != null) {
                const end_position = {
                    location: LocationType.GRID,
                    index: gridArrow.position,
                };
                gridArrowDispatch({
                    action: GridArrowDispatchActionType.SHIFT,
                    playerLetters: playerLetters
                });
                return movePlayableLetters(playerLetters, {
                    action: TileDispatchActionType.MOVE,
                    start: update.start,
                    end: end_position,
                });
            } else {
                return playerLetters;
            }
        } else {
            console.error("Unknown tray update");
            console.error({update});
        }
    }
    const [playerLetters, trayDispatch] = useReducer(movePlayableLetters, []);
    const [turnCount, setTurnCount] = useState<number>(1);
    const playerAndScores: PlayerAndScore[] = useMemo(() => {
        return props.wasm.get_scores();
    }, [turnCount, isGameOver]);
    useEffect(() => {
        const newLetterData = props.wasm.get_board_letters() as HighlightableLetterData[];
        // we need to go through and set 'highlight' field to either true or false
        // it will always be false if the player that just went was the AI
        // TODO - build in support for multiple other players
        for(let i=0; i<newLetterData.length; i++) {
            const newLetter = newLetterData[i];
            if(boardLetters[i] === undefined && newLetter !== undefined && playerTurnName == props.settings.playerName) {
                newLetter.highlight = true;
            } else if(newLetter !== undefined) {
                newLetter.highlight = false;
            }
        }
        setBoardLetters(newLetterData);
    }, [turnCount]);
    const playerTurnName = useMemo(() => {
        return props.wasm.get_current_player();
    }, [turnCount]);
    const logDivRef = useRef(null);
    const [isTileExchangeOpen, setIsTileExchangeOpen] = useState<boolean>(false);
    useEffect(() => {
        // Effect is to keep the log window scrolled down
        if (logDivRef.current != null) {
            logDivRef.current.scrollTo(0, logDivRef.current.scrollHeight); // scroll down
        }
    }, [logInfo]);
    const remainingTiles = useMemo(() => {
        return props.wasm.get_remaining_tiles();
    }, [turnCount, isGameOver]);
    const remainingAITiles = useMemo(() => {
        let result = props.wasm.get_player_tile_count(props.settings.aiName) as MyResult<number | String>;
        if(result.response_type == "OK") {
            return result.value as number;
        } else {
            console.error(result.value);
            return -1;
        }
    }, [turnCount, isGameOver]);
    function handlePlayerAction(action: TurnAction, playerName: string) {
        if (action.type == "PlayTiles"){
            const result = action.result;
            result.words.sort((a, b) => b.score - a.score);
            for(let word of result.words) {
                logDispatch(<div>{playerName} received {word.score} points for playing '{word.word}.'</div>);
            }
            logDispatch(<div>{playerName} received a total of <strong>{result.total} points</strong> for their turn.</div>);
        } else if(action.type == "ExchangeTiles") {
            logDispatch(<div>{playerName} exchanged {action.tiles_exchanged} tile{action.tiles_exchanged > 1 ? 's' : ''} for their turn.</div>);
        }
        else if(action.type == "Pass"){
            logDispatch(<div>{playerName} passed.</div>);
        }
        // Clear any on-screen arrows
        gridArrowDispatch({action: GridArrowDispatchActionType.CLEAR});
    }
    function endGame(state: GameState) {
        if(state.type != "InProgress") {
            setGameOver(true);
            logDispatch(<h4>Scoring</h4>);
            const scores = props.wasm.get_scores() as PlayerAndScore[];
            let pointsBonus = 0;
            for(const playerAndScore of scores) {
                const name = playerAndScore.name;
                if(name == state.finisher) {
                    // we'll do the finisher last
                    continue
                }
                const letters = state.remaining_tiles.get(name);
                if(letters.length == 0) {
                    logDispatch(<div>{name} has no remaining tiles.</div>);
                } else {
                    let pointsLost = 0;
                    let letterListStr = '';
                    for(let i=0; i<letters.length; i++) {
                        const letter = letters[i];
                        const letterText = letter.is_blank ? 'a blank' : letter.text;
                        pointsLost += letter.points;
                        letterListStr += letterText;
                        // we're doing a list of 3 or more so add commas
                        if(letters.length > 2) {
                            if(i == letters.length - 2) {
                                letterListStr += ', and ';
                            } else if (i < letters.length - 2) {
                                letterListStr += ', ';
                            }
                        } else if (i == 0 && letters.length == 2){
                            // list of 2
                            letterListStr += ' and ';
                        }
                    }
                    logDispatch(<div>{name} penalized {pointsLost} points for not using {letterListStr}.</div>);
                    pointsBonus += pointsLost;
                }
            }
            if(state.finisher != null) {
                logDispatch(<div>{state.finisher} receives {pointsBonus} bonus for completing first.</div>);
            }
            const highestScore = scores
                .map((score) => score.score)
                .sort((a, b) => b - a)
                .at(0);
            const playersAtHighest = scores.filter((score) => score.score == highestScore);
            let endGameMsg: string = '';
            if(playersAtHighest.length > 1 && state.finisher == null) {
                endGameMsg = "Tie game!";
            } else if (playersAtHighest.length > 1 && state.finisher != null) {
                // if there's a tie then the finisher gets the win
                endGameMsg = `${playersAtHighest[0].name} won by finishing first!`;
            }
            else {
                endGameMsg = `${playersAtHighest[0].name} won!`;
            }
            logDispatch(<h4>Game over - {endGameMsg}</h4>);
        } else {
            // what are we doing in this function?!
            console.error("endGame was called despite the state being InProgress!");
        }
    }
    function runAI() {
        const result: MyResult<TurnAdvanceResult> = props.wasm.advance_turn();
        if(result.response_type === "OK" && result.value.type == "AIMove") {
            handlePlayerAction(result.value.action, props.settings.aiName);
            if(result.game_state.type === "Ended") {
                endGame(result.game_state);
            }
        } else {
            // this would be quite surprising
            console.error({result});
        }
        setTurnCount(turnCount + 1);
    }
    useEffect(() => {
        trayDispatch({action: TileDispatchActionType.RETRIEVE});
        setConfirmedScorePoints(-1);
        if(!isGameOver){
            logDispatch(<h4>Turn {turnCount}</h4>);
            logDispatch(<div>{playerTurnName}'s turn</div>);
            if(playerTurnName != props.settings.playerName && !isGameOver) {
                runAI();
            }
        }
    }, [turnCount]);
    return <>
        <TileExchangeModal
            playerLetters={playerLetters}
            isOpen={isTileExchangeOpen}
            setOpen={setIsTileExchangeOpen}
            exchangeFunction={exchangeFunction}
        />
        <div className="board-log">
            <Grid
                cellTypes={cellTypes}
                playerLetters={playerLetters}
                boardLetters={boardLetters}
                tileDispatch={trayDispatch}
                arrow={gridArrow}
                arrowDispatch={gridArrowDispatch}
            />
            <div className="message-log">
                <button className="end-game"
                    onClick={() => {
                        props.end_game_fn();
                    }}
                >
                    End Game
                </button>
                <Scores playerScores={playerAndScores}/>
                <div className="log" ref={logDivRef}>
                    {logInfo}
                </div>
            </div>
        </div>
        <div className="tray-row">
            <div>
                <div>
                    {remainingTiles} letters remaining
                </div>
                <div>
                    {props.settings.aiName} has {remainingAITiles} tiles
                </div>
                <button
                    disabled={remainingTiles == 0 || isGameOver}
                    onClick={() => {
                    trayDispatch({action: TileDispatchActionType.RETURN}); // want all tiles back on tray for tile exchange
                    setIsTileExchangeOpen(true);
                    }}>Open Tile Exchange</button>
            </div>
            <TileTray letters={playerLetters} trayLength={props.settings.trayLength} trayDispatch={trayDispatch}/>
            <div className="player-controls">
                <button
                    className="check"
                    disabled={isGameOver}
                    onClick={() => {
                    const playedTiles = playerLetters.map((i) => {
                        if (i === undefined) {
                            return null;
                        }
                        if (i.location === LocationType.GRID) {
                            let result: PlayedTile = {
                                index: i.index,
                                character: undefined
                            };
                            if (i.is_blank) {
                                result.character = i.text;
                            }
                            return result;
                        }
                        return null;
                    });
                    const result: MyResult<{ type: "PlayTiles"; result: ScoreResult } | string> = props.wasm.receive_play(playedTiles, confirmedScorePoints > -1);
                    console.log({result});
                    if(result.response_type === "ERR") {
                        const message = result.value as string;
                        if (message.endsWith("is not a valid word")) {
                            // extract out word
                            const word = message.split(" ")[0];
                            logDispatch(<AddWordButton word={word} addWordFn={addWordFn} />);
                        } else {
                            logDispatch(<div><em>{message}</em></div>);
                        }
                    } else {
                        const score_result = (result.value as { type: "PlayTiles"; result: ScoreResult }).result;
                        const total_points = score_result.total;
                        if (confirmedScorePoints > -1) {
                            handlePlayerAction({type: "PlayTiles", result: score_result}, props.settings.playerName);
                            setTurnCount(turnCount + 1);
                        }
                        if (result.game_state.type === "Ended") {
                            endGame(result.game_state);
                        }
                        setConfirmedScorePoints(total_points);
                    }
                }}>{confirmedScorePoints > -1 ? `Score ${confirmedScorePoints} points` : "Check"}</button>
                <button
                    className="return"
                    disabled={isGameOver}
                    onClick={() => {
                    trayDispatch({action: TileDispatchActionType.RETURN});
                }}>Return Tiles</button>
                <button
                    className="pass"
                    disabled={isGameOver}
                    onClick={() => {
                    if (window.confirm("Are you sure you want to pass?")) {
                        const result = props.wasm.skip_turn() as MyResult<string>;
                        handlePlayerAction({type: "Pass"}, props.settings.playerName);
                        setTurnCount(turnCount + 1);
                        if (result.game_state.type === "Ended") {
                            endGame(result.game_state);
                        }
                    }
                }}>Pass</button>
            </div>
        </div>
    </>;
 }
 function AddWordButton(props: {word: string, addWordFn: (x: string) => void}) {
    const [isClicked, setIsClicked] = useState<boolean>(false);
    if (!isClicked) {
        return <div>
            <em>{props.word} is not a valid word.</em>
            <button
                className="add-to-dictionary"
                disabled={isClicked}
                onClick={() => {
                    setIsClicked(true);
                    props.addWordFn(props.word);
                }}>
                Add to dictionary
            </button>
        </div>;
    } else {
        return <div>
            <em>{props.word} was added to dictionary.</em>
        </div>;
    }
 }
--- a/ui/src/Menu.tsx
+++ b/ui/src/Menu.tsx
@ -0,0 +1,87 @@
 import * as React from "react";
 import {useState} from "react";
 import {Difficulty, GameWasm} from '../../pkg/word_grid';
 import {Settings} from "./utils";
 import {Game} from "./Game";
 export function Menu(props: {settings: Settings, dictionary_text: string}) {
    const [aiRandomness, setAIRandomness] = useState<number>(6);
    const [proportionDictionary, setProportionDictionary] = useState<number>(7);
    const [game, setGame] = useState<React.JSX.Element>(null);
    // Can change log scale to control shape of curve using following equation:
    // aiRandomness = log(1 + x*(n-1))/log(n) when x, the user input, ranges between 0 and 1
    const logBase: number = 10000;
    const processedAIRandomness = Math.log(1 + (logBase - 1)*aiRandomness/100) / Math.log(logBase);
    const processedProportionDictionary = 1.0 - proportionDictionary / 100;
    if (game == null) {
        return <dialog open>
            <div className="new-game">
                <div className="grid">
                    <label htmlFor="proportion-dictionary">AI's proportion of dictionary:</label>
                    <input type="number"
                           name="proportion-dictionary"
                           value={proportionDictionary}
                           onInput={(e) => {
                               setProportionDictionary(parseInt(e.currentTarget.value));
                           }}
                           min={1}
                           max={100}/>
                    <label htmlFor="randomness">Level of randomness in AI:</label>
                    <input type="number"
                           name="randomness"
                           value={aiRandomness}
                           onInput={(e) => {
                               setAIRandomness(parseInt(e.currentTarget.value));
                           }}
                           min={0}
                           max={100}/>
                </div>
                <details>
                    <ul>
                        <li>
                            "AI's proportion of dictionary" controls what percent of the total AI dictionary
                            the AI can form words with. At 100%, it has access to its entire dictionary -
                            although this dictionary is still less than what the player has access to.</li>
                        <li>
                            <div>
                                "Level of randomness in AI" controls the degree to which the AI picks the optimal move
                                for each of its turns. At 0, it always picks the highest scoring move it can do using the
                                dictionary it has access to. At 1, it picks from its available moves at random.
                            </div>
                            <div>
                                Note that "Level of randomness in AI" is now mapped on a log scale.
                                Your current setting is equivalent to {(100*processedAIRandomness).toFixed(1)}% on the previous scale.
                            </div>
                        </li>
                    </ul>
                </details>
                <div className="selection-buttons">
                    <button onClick={() => {
                        const seed = new Date().getTime();
                        //const seed = 136; // seed for starting with a blank
                        const difficulty: Difficulty = {
                            proportion: processedProportionDictionary,
                            randomness: processedAIRandomness,
                        };
                        const game_wasm = new GameWasm(BigInt(seed), props.dictionary_text, difficulty);
                        const game = <Game settings={props.settings} wasm={game_wasm} key={seed} end_game_fn={() => setGame(null)}/>
                        setGame(game);
                    }}>New Game</button>
                </div>
            </div>
        </dialog>
    } else {
        return game;
    }
 }
--- a/ui/src/Modal.tsx
+++ b/ui/src/Modal.tsx
@ -0,0 +1,39 @@
 import {useEffect, useRef} from "react";
 export function Modal(props: {
    isOpen: boolean;
    setOpen: (isOpen: boolean) => void;
    children: any;
 }){
    const ref = useRef<HTMLDialogElement>();
    useEffect(() => {
        if(props.isOpen){
            // @ts-ignore
            ref.current.showModal();
        } else {
            // @ts-ignore
            ref.current.close();
        }
    }, [props.isOpen])
    return(
        // The style part is just to make sure the dialog is hidden the split second before useEffect runs,
        // in case the dialog content is derived from whatever determines isOpen
        <dialog ref={ref} style={!props.isOpen ? {display: 'none'} : null}>
            <div className="close-button-div" >
                <button onClick={(e) => {
                    // we manually trigger a close anyway because the children can get updated before the dialog gets closed otherwise
                    // @ts-ignore
                    ref.current.close();
                    props.setOpen(false);
                }}>✕</button>
            </div>
            <div>
                {props.children}
            </div>
        </dialog>
    );
 }
--- a/ui/src/TileExchange.tsx
+++ b/ui/src/TileExchange.tsx
@ -0,0 +1,128 @@
 import {addNTimes, PlayableLetterData} from "./utils";
 import {useEffect, useState} from "react";
 import {Modal} from "./Modal";
 import {Letter as LetterData} from "../../pkg/word_grid";
 import * as React from "react";
 export function TileExchangeModal(props: {
    playerLetters: PlayableLetterData[],
    isOpen: boolean,
    setOpen: (isOpen: boolean) => void,
    exchangeFunction: (selectedArray: Array<boolean>) => void
 }) {
    function clearExchangeTiles() {
        const array: boolean[] = [];
        addNTimes(array, false, props.playerLetters.length);
        return array;
    }
    const [tilesToExchange, setTilesToExchange] = useState<boolean[]>(clearExchangeTiles);
    useEffect(() => {
        setTilesToExchange(clearExchangeTiles());
    }, [props.playerLetters])
    let tilesExchangedSelected = 0;
    for (let i of tilesToExchange) {
        if(i) {
            tilesExchangedSelected++;
        }
    }
    return <Modal isOpen={props.isOpen} setOpen={(isOpen) => {
        setTilesToExchange(clearExchangeTiles());
        props.setOpen(isOpen);
    }}>
        <div className="tile-exchange-dialog">
            <div className="instructions">
                Click on each tile you'd like to exchange. You currently have {tilesExchangedSelected} tiles selected.
            </div>
            <div className="selection-buttons">
                <button onClick={() => {
                    const array: boolean[] = [];
                    addNTimes(array, true, props.playerLetters.length);
                    setTilesToExchange(array);
                }}>Select All</button>
                <button onClick={() => {
                    setTilesToExchange(clearExchangeTiles());
                }}>Select None</button>
            </div>
            <TilesExchangedTray
                tray={props.playerLetters}
                selectedArray={tilesToExchange}
                setSelectedArray={setTilesToExchange}
                trayLength={props.playerLetters.length}
            />
            <div className="finish-buttons">
                <button onClick={() => {
                    setTilesToExchange(clearExchangeTiles());
                    props.setOpen(false);
                }}>Cancel</button>
                <button disabled = {tilesExchangedSelected == 0} onClick={() => {
                    props.exchangeFunction(tilesToExchange);
                    props.setOpen(false);
                }}>Exchange</button>
            </div>
        </div>
    </Modal>;
 }
 function TilesExchangedTray(props: {
    tray: Array<PlayableLetterData>,
    trayLength: number,
    selectedArray: Array<boolean>,
    setSelectedArray: (x: Array<boolean>) => void,
 }){
    const divContent = [];
    for(let i=0; i<props.trayLength; i++) {
        divContent.push(<span key={i} />); // empty tile elements
    }
    for(let i = 0; i<props.trayLength; i++){
        const tileData = props.tray[i];
        const toggleFunction = () => {
            props.selectedArray[i] = !props.selectedArray[i];
            props.setSelectedArray(props.selectedArray.slice());
        }
        if(tileData != null){
            divContent[tileData.index] =
                <DummyExchangeTile key={tileData.index} letter={tileData} isSelected={props.selectedArray[i]} onClick={toggleFunction}/>;
        }
    }
    return <div className="tray-container">
        <div className="tray">
            {divContent}
        </div>
    </div>;
 }
 function DummyExchangeTile(props: {
    letter: LetterData,
    isSelected: boolean,
    onClick: () => void,
 }){
    let textClassName = "text";
    if(props.letter.is_blank) {
        textClassName += " prev-blank";
    }
    let letterClassName = "letter";
    if(props.isSelected){
        letterClassName += ' selected-tile';
    }
    return <div className={letterClassName} onClick={props.onClick}>
        <div className={textClassName}>{props.letter.text}</div>
        <div className="letter-points">{props.letter.points}</div>
    </div>;
 }
--- a/ui/src/UI.tsx
+++ b/ui/src/UI.tsx
@ -0,0 +1,248 @@
 import * as React from "react";
 import {ChangeEvent, JSX} from "react";
 import {PlayerAndScore} from "../../pkg/word_grid";
 import {
    CellType,
    cellTypeToDetails,
    CoordinateData,
    GridArrowData,
    GridArrowDispatch,
    GridArrowDispatchActionType,
    HighlightableLetterData,
    LocationType,
    PlayableLetterData,
    TileDispatch,
    TileDispatchActionType,
 } from "./utils";
 export function TileSlot(props: {
        tile?: React.JSX.Element | undefined,
        location: CoordinateData,
        tileDispatch: TileDispatch,
        arrowDispatch?: GridArrowDispatch,
 }): React.JSX.Element {
    let isDraggable = props.tile !== undefined;
    function onDragStart(e: React.DragEvent<HTMLDivElement>) {
        e.dataTransfer.effectAllowed = "move";
        e.dataTransfer.setData("wordGrid/coords", JSON.stringify(props.location));
    }
    function onDrop(e: React.DragEvent<HTMLDivElement>) {
        const startLocation: CoordinateData = JSON.parse(e.dataTransfer.getData("wordGrid/coords"));
        const thisLocation = props.location;
        props.tileDispatch({action: TileDispatchActionType.MOVE, start: startLocation, end: thisLocation});
    }
    let className = "tileSpot";
    if (props.location.location === LocationType.GRID) {
        className += " ephemeral";
    }
    let onClick: () => void;
    if(props.arrowDispatch != null && props.location.location == LocationType.GRID) {
        onClick = () => {
            props.arrowDispatch({action: GridArrowDispatchActionType.CYCLE, position: props.location.index});
        }
    } else if(props.location.location == LocationType.TRAY && props.tile != null && props.tile.props.data.text != ' ' && props.tile.props.data.text != '') {
        onClick = () => {
            props.tileDispatch({
                action: TileDispatchActionType.MOVE_TO_ARROW, end: undefined, start: props.location,
            });
        }
    }
    return <div className={className}
        draggable={isDraggable}
        onDragStart={onDragStart}
        onDrop={onDrop}
        onClick={onClick}
        onDragOver={(e) => {e.preventDefault()}}
    >
        {props.tile}
    </div>
 }
 export function Letter(props: { data: HighlightableLetterData, letterUpdater?: (value: string) => void }): React.JSX.Element {
    function modifyThisLetter(value:string){
        props.letterUpdater(value);
    }
    function onBlankInput(e: ChangeEvent<HTMLInputElement>){
        let value = e.target.value.toUpperCase();
        if(value.length > 1){
            value = value[value.length - 1];
        } else if(value.length == 0){
            modifyThisLetter(value);
            return;
        }
        // Now check that it's a letter
        let is_letter = value.match("[A-Z]") != null;
        if(is_letter){
            modifyThisLetter(value);
        } else {
            // Cancel and do nothing
            e.preventDefault();
        }
    }
    if(props.data.is_blank && props.data.ephemeral) {
        return <div className="letter">
            <input className="blank-input" type="text" onChange={onBlankInput} value={props.data.text} />
            <div className="letter-points">{props.data.points}</div>
        </div>
    } else {
        let className = "text";
        if (props.data.is_blank) { // not ephemeral
            className += " prev-blank";
        }
        let letterClassName = "letter";
        if (props.data.highlight) {
            letterClassName += " highlight";
        }
        return <div className={letterClassName}>
            <div className={className}>{props.data.text}</div>
            <div className="letter-points">{props.data.points}</div>
        </div>
    }
 }
 export function TileTray(props: { letters: Array<PlayableLetterData>, trayLength: number, trayDispatch: TileDispatch }): React.JSX.Element {
    let elements: JSX.Element[] = [];
    for (let i=0; i<props.trayLength; i++) {
        elements.push(
            <TileSlot
                key={"empty" + i}
                location={{location: LocationType.TRAY, index: i}}
                tileDispatch={props.trayDispatch} />
        );
    }
    props.letters
        .forEach((letter, i) => {
        if (letter != null && letter.location === LocationType.TRAY) {
            elements[letter.index] =
                <TileSlot
                    tile={<Letter
                        data={{...letter, highlight: false}}
                        letterUpdater={(value) => {
                            props.trayDispatch({action: TileDispatchActionType.SET_BLANK, blankIndex: i, newBlankValue: value})
                        }}
                    />}
                    key={"letter_tray" + letter.index}
                    location={{location: LocationType.TRAY, index: letter.index}}
                    tileDispatch={props.trayDispatch} />
        }
    });
    return (
        <div className="tray">
            {elements}
        </div>
    )
 }
 export function Arrow(props: {
    data: GridArrowData,
    dispatch: GridArrowDispatch,
 }) {
    return <div
        className={`arrow ${props.data.direction}`}
    >
        ➡
    </div>;
 }
 export function Grid(props: {
        cellTypes: CellType[],
        playerLetters: Array<PlayableLetterData>,
        boardLetters: HighlightableLetterData[],
        tileDispatch: TileDispatch,
        arrow: GridArrowData,
        arrowDispatch: GridArrowDispatch,
 }) {
    const elements = props.cellTypes.map((ct, i) => {
        const {className, text} = cellTypeToDetails(ct);
        let tileElement: JSX.Element;
        if (props.boardLetters[i] !== undefined) {
            tileElement = <Letter data={props.boardLetters[i]} />;
        } else {
            tileElement = <>
                <span>{text}</span>
                <TileSlot
                    location={{location: LocationType.GRID, index: i}}
                    tileDispatch={props.tileDispatch}
                    arrowDispatch={props.arrowDispatch}
                />
            </>;
        }
        let arrowElement: JSX.Element;
        if(props.arrow != null && props.arrow.position == i) {
            arrowElement = <Arrow data={props.arrow} dispatch={props.arrowDispatch} />;
        }
        return <div key={i} className={"grid-spot " + className}>
            {tileElement}
            {arrowElement}
        </div>;
    });
    props.playerLetters
        .forEach((letter, i) => {
        if (letter != null && letter.location === LocationType.GRID) {
            const ct = props.cellTypes[letter.index];
            const {className} = cellTypeToDetails(ct);
            elements[letter.index] =
                <div key={"letter" + letter.index} className={"grid-spot " + className}>
                    <TileSlot
                        tile={<Letter
                            data={{...letter, highlight: false}}
                            letterUpdater={(value) => {
                                props.tileDispatch({action: TileDispatchActionType.SET_BLANK, blankIndex: i, newBlankValue: value});
                            }}
                        />}
                        location={{location: LocationType.GRID, index: letter.index}}
                        tileDispatch={props.tileDispatch} />
                </div>;
        }
    });
    return <div className="board-grid">
        {elements}
    </div>
 }
 export function Scores(props: {playerScores: Array<PlayerAndScore>}){
    let elements = props.playerScores.map((ps) => {
        return <div key={ps.name}>
            <h3>{ps.name}</h3>
            <span>{ps.score}</span>
        </div>;
    });
    return <div className="scoring">
        {elements}
    </div>
 }
--- a/ui/src/elements.tsx
+++ b/ui/src/elements.tsx
@ -1,274 +0,0 @@
 import * as React from "react";
 import {GameWasm, Letter as LetterData, MyResult, PlayedTile, Tray, WordResult} from "word_grid";
 import {createRoot} from "react-dom/client";
 import {Children, useMemo, useReducer, useState} from "react";
 export enum LocationType {
    GRID,
    TRAY
 }
 enum CellType {
    Normal = "Normal",
    DoubleWord = "DoubleWord",
    DoubleLetter = "DoubleLetter",
    TripleLetter = "TripleLetter",
    TripleWord = "TripleWord",
    Start = "Start",
 }
 function cell_type_to_details(cell_type: CellType): {className: string, text: string} {
    let className: string;
    let text: string;
    switch (cell_type) {
        case CellType.Normal:
            className = "grid-spot-normal";
            text = "";
            break;
        case CellType.DoubleWord:
            className = "grid-spot-double-word";
            text = "Double Word Score";
            break;
        case CellType.DoubleLetter:
            className = "grid-spot-double-letter";
            text = "Double Letter Score";
            break;
        case CellType.TripleLetter:
            className = "grid-spot-triple-letter";
            text = "Triple Letter Score";
            break;
        case CellType.TripleWord:
            className = "grid-spot-triple-word";
            text = "Triple Word Score";
            break;
        case CellType.Start:
            className = "grid-spot-start";
            text = "★";
            break;
    }
    return {className: className, text: text};
 }
 export interface CoordinateData {
    location: LocationType;
    index: number;
 }
 export type PlayableLetterData = LetterData & CoordinateData;
 function matchCoordinate(playerLetters: PlayableLetterData[], coords: CoordinateData): number {
    for (let i=0; i<playerLetters.length; i++){
        let letter = playerLetters[i];
        if (letter.location === coords.location && letter.index === coords.index) {
            return i;
        }
    }
    return null; // no match
 }
 type TileDispatch = React.Dispatch<{start: CoordinateData, end: CoordinateData}>;
 function movePlayableLetters(playerLetters: PlayableLetterData[], update: {start: CoordinateData, end: CoordinateData}) {
    let startIndex = matchCoordinate(playerLetters, update.start);
    let endIndex = matchCoordinate(playerLetters, update.end);
    if(startIndex != null) {
        let startLetter = playerLetters[startIndex];
        startLetter.location = update.end.location;
        startLetter.index = update.end.index;
    }
    if(endIndex != null) {
        let endLetter = playerLetters[endIndex];
        endLetter.location = update.start.location;
        endLetter.index = update.start.index;
    }
    return playerLetters.slice();
 }
 export function Game(props: {wasm: GameWasm}) {
    const cellTypes = useMemo(() => {
        return props.wasm.get_board_cell_types();
    }, []);
    const [playerLetters, dispatch] = useReducer(movePlayableLetters, null, (_) => {
            let tray: Tray = props.wasm.get_tray();
            // initial state
            let letters: PlayableLetterData[] = tray.letters.map((ld, i) => {
                ld["location"] = LocationType.TRAY;
                ld["index"] = i;
                return ld as PlayableLetterData;
            })
            return letters;
    })
    return <>
        <Grid cellTypes={cellTypes} playerLetters={playerLetters} dispatch={dispatch}/>
        <TileTray letters={playerLetters} trayLength={7} dispatch={dispatch}/>
        <button onClick={(e) => {
            const playedTiles = playerLetters.map((i) => {
                if (i === undefined) {
                    return null;
                }
                if (i.location === LocationType.GRID) {
                    let result: PlayedTile = {
                        index: i.index,
                        character: undefined
                    };
                    if (i.is_blank) {
                        result.character = i.text;
                    }
                    return result;
                }
                return null;
            });
            const result: MyResult<Array<WordResult> | string> = props.wasm.receive_play(playedTiles, false);
            console.log({result});
            if(result.response_type === "ERR") {
                alert(result.value);
            } else {
                let total_points = 0;
                for (let word_result of (result.value as Array<WordResult>)) {
                    total_points += word_result.score;
                }
                alert(`You would score ${total_points} points.`);
            }
        }}>Check Submission</button>
    </>;
 }
 export function TileSlot(props: { tile: React.JSX.Element | undefined, location: CoordinateData, dispatch: TileDispatch }): React.JSX.Element {
    let isDraggable = props.tile !== undefined;
    function onDragStart(e: React.DragEvent<HTMLDivElement>) {
        e.dataTransfer.effectAllowed = "move";
        e.dataTransfer.setData("wordGrid/coords", JSON.stringify(props.location));
    }
    function onDrop(e: React.DragEvent<HTMLDivElement>) {
        const startLocation: CoordinateData = JSON.parse(e.dataTransfer.getData("wordGrid/coords"));
        const thisLocation = props.location;
        props.dispatch({start: startLocation, end: thisLocation});
    }
    let className = "tileSpot";
    if (props.location.location === LocationType.GRID) {
        className += " ephemeral";
    }
    return <div className={className}
        draggable={isDraggable}
        onDragStart={onDragStart}
        onDrop={onDrop}
        onDragOver={(e) => {e.preventDefault()}}
    >
        {props.tile}
    </div>
 }
 export function Letter(props: { data: LetterData }): React.JSX.Element {
    return <div className="letter">
        <div className="text">{props.data.text}</div>
        <div className="letter-points">{props.data.points}</div>
    </div>
 }
 export function TileTray(props: { letters: Array<PlayableLetterData>, trayLength: number, dispatch: TileDispatch }): React.JSX.Element {
    let elements: JSX.Element[] = [];
    for (let i=0; i<props.trayLength; i++) {
        elements.push(
            <TileSlot
                tile={undefined}
                key={"empty" + i}
                location={{location: LocationType.TRAY, index: i}}
                dispatch={props.dispatch} />
        );
    }
    for (let letter of props.letters) {
        if (letter.location === LocationType.TRAY) {
            elements[letter.index] =
                <TileSlot
                    tile={<Letter data={letter} />}
                    key={"letter" + letter.index}
                    location={{location: LocationType.TRAY, index: letter.index}}
                    dispatch={props.dispatch} />
        }
    }
    return (
        <div className="tray">
            {elements}
        </div>
    )
 }
 function Grid(props: {cellTypes: CellType[], playerLetters: Array<PlayableLetterData>, dispatch: TileDispatch}) {
    const elements = props.cellTypes.map((ct, i) => {
        const {className, text} = cell_type_to_details(ct);
        return <div key={i} className={"grid-spot " + className}>
            <span>{text}</span>
            <TileSlot
                tile={undefined}
                location={{location: LocationType.GRID, index: i}}
                dispatch={props.dispatch} />
        </div>;
    });
    for (let letter of props.playerLetters) {
        if (letter.location === LocationType.GRID) {
            const ct = props.cellTypes[letter.index];
            const {className, text} = cell_type_to_details(ct);
            elements[letter.index] =
                <div key={"letter" + letter.index} className={"grid-spot " + className}>
                    <TileSlot
                        tile={<Letter data={letter} />}
                        location={{location: LocationType.GRID, index: letter.index}}
                        dispatch={props.dispatch} />
                </div>;
        }
    }
    return <div className="board-grid">
        {elements}
    </div>
 }
--- a/ui/src/index.tsx
+++ b/ui/src/index.tsx
@ -1,7 +1,7 @@
-import init, {greet, GameWasm} from '../node_modules/word_grid/word_grid.js';
+import init from '../../pkg/word_grid.js';
 import {Game} from "./elements";
 import {createRoot} from "react-dom/client";
 import * as React from "react";
 import {Menu} from "./Menu";
 // @ts-ignore
 const dictionary_url = new URL("../../resources/dictionary.csv", import.meta.url);
@ -45,15 +45,14 @@ async function run() {
        })
    }
    let game = new GameWasm(BigInt(1234), dictionary_text);
    const cellTypes = game.get_board_cell_types();
    console.log({cellTypes});
    const root = createRoot(document.getElementById("root"));
-    root.render(<Game wasm={game} />);
+    root.render(<Menu dictionary_text={dictionary_text} settings={{
        trayLength: 7,
        playerName: 'Player',
        aiName: 'AI',
    }}/>);
 }
--- a/ui/src/style.less
+++ b/ui/src/style.less
@ -3,7 +3,7 @@
@board-length: 15;
@tile-star-size: 45px;
-.tray {
+.tray { // Don't put under tray-row as this also gets used in tile exchange
    display: grid;
    grid-template-columns: repeat(7, @tile-width);
    grid-gap: 5px;
@ -13,6 +13,34 @@
    margin: 10px;
 }
 .tray-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  width: @board-length*@tile-width;
  .player-controls {
    display: grid;
    grid-template-areas: "check return"
                        "check pass";
    grid-template-rows: 1fr 1fr;
    grid-template-columns: 1fr 1fr;
    .check {
      grid-area: check;
    }
    .return {
      grid-area: return;
    }
    .pass {
      grid-area: pass;
    }
  }
 }
 .board-grid {
  //grid-area: grid;
  display: grid;
@ -21,6 +49,7 @@
  justify-content: center;
  grid-gap: 1px;
  user-select: none;
  flex: initial;
 }
 .grid-spot {
@ -38,9 +67,23 @@
    position: absolute;
    top: 0;
    left: 0;
    z-index: 2;
  }
  .arrow {
    color: red;
    font-size: @tile-font-size+10;
    position: absolute;
    top: 0;
    left: 10px;
    z-index: 1;
  }
  .down {
    transform: rotate(90deg);
  }
  .ephemeral {
    opacity: 75%;
  }
@ -79,6 +122,8 @@
 .tileSpot {
  height: @tile-width;
  width: @tile-width;
 }
 .letter {
@ -104,4 +149,156 @@
    padding-right: 5px;
  }
  input {
    position: absolute;
    width: 100%;
    top: 5px;
    text-align: center;
    font-size: @tile-font-size;
    background: none;
    border: none;
    padding: 0;
    font-style: italic;
    left: 0; /* Fixes a weird display bug where the input is shifted to the right when the tile is on the grid */
  }
  .prev-blank {
    font-style: italic;
  }
 }
 .highlight {
  color: red;
 }
 .board-log {
  display: grid;
  grid-template-columns: @tile-width*@board-length+15px 1fr;
  max-height: @tile-width*@board-length + 15px;
  margin: 1em;
 }
 .message-log {
  border-color: black;
  border-style: solid;
  border-width: 2px;
  margin: 5px;
  max-height: inherit;
  display: grid;
  grid-template-rows: 1.5em 6em 1fr;
  .log {
    overflow-y: scroll;
    padding: 0.5em;
  }
  button.end-game {
    margin: 0.5em;
    width: fit-content;
    height: fit-content;
  }
  .scoring {
    text-align: center;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: none;
    span {
      font-size: 20px;
    }
    div {
      margin-left: 10px;
      margin-right: 10px;
    }
  }
 }
 dialog {
  border-radius: 10px;
  z-index: 1;
  .new-game {
    width: 50em;
    .grid {
      display: grid;
      grid-template-columns: 3fr 2fr;
      grid-column-gap: 1em;
      grid-row-gap: 0.5em;
    }
    .selection-buttons {
      display: grid;
      grid-template-columns: 1fr 1fr;
      justify-items: center;
      padding-top: 1em;
      button {
        width: 40%;
      }
    }
  }
  .close-button-div {
    display: flex;
    justify-content: end;
    button {
      border: 0;
      background-color: inherit;
      font-size: 1.5rem;
      color: #aaaaaa;
      font-weight: bold;
      &:hover {
        color: black;
        cursor: pointer;
      }
    }
  }
  .tile-exchange-dialog {
    .selection-buttons {
      display: flex;
      justify-content: space-around;
      button {
        width: 40%;
      }
    }
    .finish-buttons {
      .selection-buttons();
    }
    .tray-container {
      display: flex;
      justify-content: center;
      margin: 20px;
    }
    .selected-tile {
      bottom: 10px;
    }
  }
 }
 button.add-to-dictionary {
  padding: 0;
  margin: 0 0 0 1em;
 }
 div.log {
    line-height: 1.5em;
 }
--- a/ui/src/utils.ts
+++ b/ui/src/utils.ts
@ -0,0 +1,165 @@
 import {Letter as LetterData, Letter} from "../../pkg/word_grid";
 import * as React from "react";
 export enum CellType {
    Normal = "Normal",
    DoubleWord = "DoubleWord",
    DoubleLetter = "DoubleLetter",
    TripleLetter = "TripleLetter",
    TripleWord = "TripleWord",
    Start = "Start",
 }
 export interface Settings {
    trayLength: number;
    playerName: string;
    aiName: string;
 }
 export enum LocationType {
    GRID,
    TRAY
 }
 export interface CoordinateData {
    location: LocationType;
    index: number;
 }
 export type PlayableLetterData = LetterData & CoordinateData;
 export type HighlightableLetterData = LetterData & {highlight: boolean};
 export enum TileDispatchActionType {
    MOVE,
    RETRIEVE,
    SET_BLANK,
    RETURN,
    MOVE_TO_ARROW,
 }
 export type TileDispatchAction = {action: TileDispatchActionType, start?: CoordinateData, end?: CoordinateData, newBlankValue?: string, blankIndex?: number, override?: boolean};
 export type TileDispatch = React.Dispatch<TileDispatchAction>;
 export enum Direction {
    RIGHT = "right",
    DOWN = "down",
 }
 export interface GridArrowData {
    direction: Direction,
    position: number,
 }
 export enum GridArrowDispatchActionType {
    CLEAR,
    CYCLE,
    SHIFT,
 }
 // I need to include the playerLetters as an argument because I can't define gridArrow after defining the playerLetters in <Game>
 export type GridArrowDispatchAction = {
    action: GridArrowDispatchActionType,
    position?: number,
    playerLetters?: PlayableLetterData[] // only needs to be defined on action type SHIFT
 };
 export type GridArrowDispatch = React.Dispatch<GridArrowDispatchAction>;
 export function matchCoordinate(playerLetters: PlayableLetterData[], coords: CoordinateData): number {
    for (let i=0; i<playerLetters.length; i++){
        let letter = playerLetters[i];
        if (letter !== undefined && letter.location === coords.location && letter.index === coords.index) {
            return i;
        }
    }
    return null; // no match
 }
 export function cellTypeToDetails(cell_type: CellType): {className: string, text: string} {
    let className: string;
    let text: string;
    switch (cell_type) {
        case CellType.Normal:
            className = "grid-spot-normal";
            text = "";
            break;
        case CellType.DoubleWord:
            className = "grid-spot-double-word";
            text = "Double Word Score";
            break;
        case CellType.DoubleLetter:
            className = "grid-spot-double-letter";
            text = "Double Letter Score";
            break;
        case CellType.TripleLetter:
            className = "grid-spot-triple-letter";
            text = "Triple Letter Score";
            break;
        case CellType.TripleWord:
            className = "grid-spot-triple-word";
            text = "Triple Word Score";
            break;
        case CellType.Start:
            className = "grid-spot-start";
            text = "★";
            break;
    }
    return {className: className, text: text};
 }
 export function addNTimes<T>(array: T[], toAdd: T, times: number) {
    for (let i=0; i<times; i++) {
        array.push(toAdd);
    }
 }
 export function mergeTrays(existing: PlayableLetterData[], newer: (Letter | undefined)[]): PlayableLetterData[] {
    let trayLength = Math.max(existing.length, newer.length);
    // we may need to check against the existing tray to retain whatever user reorderings there are
    const freeSpots = new Array<number | null>();
    for (let i = 0; i<trayLength; i++) {
        freeSpots.push(i);
    }
    existing.filter((x) => {
        return x !== undefined && x !== null;
    }).forEach((x) => {
        if (x.location === LocationType.TRAY) {
            freeSpots[x.index] = null;
        }
    });
    const firstNotNull = (): number => {
        for (let i of freeSpots) {
            if (i !== null) {
                freeSpots[i] = null;
                return i;
            }
        }
        return null;
    }
    return newer.map((ld, i) => {
        if (ld !== undefined) {
            if (existing[i] !== undefined && existing[i] !== null && existing[i].location === LocationType.TRAY) {
                ld["index"] = existing[i].index;
            } else {
                ld["index"] = firstNotNull();
            }
            ld["location"] = LocationType.TRAY;
        }
        return ld as PlayableLetterData;
    });
 }
 export const GRID_LENGTH = 15;
--- a/ui/tsconfig.json
+++ b/ui/tsconfig.json
@ -1,7 +1,7 @@
 {
  "compilerOptions": {
    "module": "commonjs",
-    "target": "ES2023",
+    "target": "ES2022",
    "jsx": "react-jsx",
    "lib": [
      "es2023",
Author	SHA1	Message	Date
Joel Therrien	ae33218a30	Add link to playable version	2024-02-11 12:11:50 -08:00
Joel Therrien	edeac3b2fd	Fix blank letter at end-of-game bug	2023-10-13 21:56:02 -07:00
Joel Therrien	22d7ce969e	Add some mitigations against blank letter bug	2023-10-13 21:30:06 -07:00
Joel Therrien	7d6e7d0113	Adjust Makefile so 'make' builds all	2023-10-13 21:16:16 -07:00
Joel Therrien	ad540e4c4b	Fix bug whereby arrow ignored ephemeral tiles	2023-10-03 20:32:47 -07:00
Joel Therrien	ceb5d6c20d	Clean up Typescript imports	2023-09-27 20:03:52 -07:00
Joel Therrien	79610b958b	Fix end-of-game UI bugs	2023-09-25 20:50:58 -07:00
Joel Therrien	7bca436012	Improve documentation	2023-09-24 10:58:33 -07:00
Joel Therrien	55f968ae35	Add commands for building UI	2023-09-23 12:21:09 -07:00
Joel Therrien	880667b80e	Remove turn log message after game over	2023-09-23 12:20:52 -07:00
Joel Therrien	2fa28ce3d4	Add arrow for fast play	2023-09-23 10:53:07 -07:00
Joel Therrien	a34ad8cd12	Improve UI; add end game button	2023-09-21 19:01:56 -07:00
Joel Therrien	75d8db4098	Improve 'Add to dictionary' UI	2023-09-21 18:55:33 -07:00
Joel Therrien	6c7a90c421	Add confirmation choice for passing	2023-09-21 18:40:41 -07:00
Joel Therrien	e0fe22e9ce	Add end game conditions Also fix some UI bugs	2023-09-20 18:59:32 -07:00
Joel Therrien	0d30ac0b46	Add AI tile count and total tile counts, other UI tweaks	2023-09-16 21:08:10 -07:00
Joel Therrien	e7c46c8efd	Add standardized turn summary messages. Same logic for both player and AI	2023-09-15 21:01:49 -07:00
Joel Therrien	e5b2e4139e	Clean up UI code	2023-09-15 20:37:40 -07:00
Joel Therrien	c1d7a2f774	Add AI turn highlighting	2023-09-14 19:38:34 -07:00
Joel Therrien	a014805cbf	Automate AI plays	2023-09-14 19:14:19 -07:00
Joel Therrien	ef4506b55e	Refactor code to utilize TurnActions on player moves	2023-09-14 18:53:47 -07:00
Joel Therrien	8fd250170b	Add rudimentry but functional AI integration into UI Also fixed some bugs that could cause AI process to either produce invalid words or crash.	2023-09-12 22:13:36 -07:00
Joel Therrien	9b22f1301d	WIP integration of AI into game logic	2023-09-10 15:17:36 -07:00
Joel Therrien	60fabb0214	Add difficulty menu to UI (not yet functional)	2023-09-08 23:32:44 -07:00
Joel Therrien	ef655f99cd	Fix bug in Rust relating to PlayedTile The bug broke a contract that was relied on by WASM	2023-09-08 17:50:54 -07:00
Joel Therrien	e23c1d139b	Add capability to convert AI plays into PlayedTiles vector	2023-09-07 19:44:07 -07:00
Joel Therrien	0887cb29aa	Fix bug in AI handling of blank letters	2023-09-07 19:14:43 -07:00
Joel Therrien	4b86c031ed	Add basic AI support (Rust only)	2023-09-06 20:00:14 -07:00
Joel Therrien	cdfd8b5ee9	Fix bug where UI wasn't detecting 7-letter word bonus	2023-08-24 20:37:01 -07:00
Joel Therrien	733feecfe3	Add adding words to dictionary mid-game	2023-08-24 20:29:08 -07:00
Joel Therrien	4f8f14364c	Removed unused parameters in UI	2023-08-23 21:58:34 -07:00
Joel Therrien	974751bda0	Split UI code into separate files	2023-08-23 20:46:43 -07:00
Joel Therrien	de2605af67	Improve tile exchange to retain player order	2023-08-23 20:37:22 -07:00
Joel Therrien	e8cff060b0	Add 'Return Tiles' button	2023-08-23 20:23:58 -07:00
Joel Therrien	ca5ab097c5	Add basic tile exchange support Still need to support handling if the player reordered their tray	2023-08-22 20:52:03 -07:00
Joel Therrien	960e8c31fb	Fix Rust dependency issue	2023-08-22 19:02:08 -07:00
Joel Therrien	b790e48bc4	Add UI for tile exchange	2023-08-21 19:42:22 -07:00
Joel Therrien	4ba4c15e23	Transfer previous Modal code	2023-08-20 17:26:52 -07:00
Joel Therrien	800ec27c36	Slightly improve styling	2023-08-20 16:34:00 -07:00
Joel Therrien	f3d085ff99	Add LICENSE and fields to Cargo.toml	2023-08-20 16:28:42 -07:00
Joel Therrien	368dcd4a65	Add auto-scrolling for log Styling is still a WIP	2023-08-20 10:00:10 -07:00
Joel Therrien	4c8d27b659	Improve tray handling Fix bugs when the tray is not fully filled, and retain custom user tray ordering between turns.	2023-08-19 14:47:34 -07:00
Joel Therrien	b33007d3c4	Downgrade serde to remove included binary	2023-08-19 09:58:16 -07:00
Joel Therrien	cb10d97724	Refactored receive_play from wasm into Game	2023-08-18 18:14:27 -07:00
Joel Therrien	cd8a4b73a9	Add support for blank characters	2023-08-17 18:30:55 -07:00
Joel Therrien	c61b2e3f75	Add display of previous tiles	2023-08-17 18:05:20 -07:00
Joel Therrien	fd7cf2d6af	Add turn counting and score persistence	2023-08-16 19:37:32 -07:00
Joel Therrien	c7399b2b99	Integrate score keeping and individual trays	2023-08-15 19:35:23 -07:00