Now randomizing the players' hands

README.md

@@ -9,6 +9,18 @@ I presented this work in progress at Codemotion Milano 2023; [here are the slide
 
 # The story of this repo so far
 
+
+## 2023-11-27
+
+Implemented the deck.  Now we randomize the players' hands.
+
+The MCTS AI has been set aside for the moment; AI is played by the Greedy player.
+
+BUG: it does not reshuffle the deck when the talon is empty!!!
+
+
+## 2023-11-25
+
 When I presented at Codemotion, the MCTS-based AI was weak due to two factors:
 
  - choosing one unit at a time, ie simple moves were not grouped in macromoves

src/ai/autoplay.js

@@ -44,8 +44,7 @@ export class Autoplay {
         const game = this.game.toGame();
         const sideNorth = game.scenario.sideNorth;
         const northPlayer = new GreedyPlayer();
-        const southPlayer = this.aiPlayer;
-        // const southPlayer = new MinimaxPlayer(8);
+        const southPlayer = new GreedyPlayer();
         while (!this.game.isTerminal() && !paused()) {
             const player = this.game.currentSide === sideNorth ? northPlayer : southPlayer;
             const commands = player.decideMove(game);

src/main.js

@@ -1,6 +1,7 @@
+import { GreedyPlayer } from "./ai/greedy_player.js";
 import { CARD_IMAGE_SIZE, MCTS_PLAYOUT_ITERATIONS, MCTS_SAMPLING_EXPLORATION_CHANCE } from "./config.js";
 import { MCTS_EXPANSION_FACTOR, MCTS_ITERATIONS } from "./config.js";
-import { Autoplay, displayEvents } from "./ai/autoplay.js";
+import { Autoplay, displayEvents, RandomPlayer } from "./ai/autoplay.js";
 import { MctsPlayer } from "./ai/mcts_player.js";
 import { InteractiveGame } from "./interactive_game.js";
 import { Point } from "./lib/hexlib.js";
@@ -23,12 +24,13 @@ const graphics = new GraphicalContext(canvas.getContext('2d'));
 
 // create game and AI
 const scenario = makeScenario(getQueryParameter("scenario"));
-const aiPlayer = new MctsPlayer({
-    iterations: MCTS_ITERATIONS,
-    expansionFactor: MCTS_EXPANSION_FACTOR,
-    playoutIterations: MCTS_PLAYOUT_ITERATIONS,
-    samplingExplorationChance: MCTS_SAMPLING_EXPLORATION_CHANCE,
-});
+const aiPlayer = new GreedyPlayer();
+// const aiPlayer = new MctsPlayer({
+//     iterations: MCTS_ITERATIONS,
+//     expansionFactor: MCTS_EXPANSION_FACTOR,
+//     playoutIterations: MCTS_PLAYOUT_ITERATIONS,
+//     samplingExplorationChance: MCTS_SAMPLING_EXPLORATION_CHANCE,
+// });
 
 let game;
 let autoplay;

src/model/deck.js

@@ -86,6 +86,7 @@ export class Deck {
         this.#discards.push(card);
     }
 
+    /** @returns {Deck} */
     clone() {
         return new Deck(this.#talon.slice(), this.#discards.slice());
     }

src/model/game.js

@@ -7,6 +7,7 @@ import {
     ORDER_LIGHT_TROOPS_CARD,
     ORDER_MEDIUM_TROOPS_CARD,
 } from "./cards.js";
+import { Deck, THE_DECK } from "./deck.js";
 import { Dice, DiceResult } from "./dice.js";
 import { SideSwitchedTo } from "./events.js";
 import GameStatus from "./game_status.js";
@@ -41,6 +42,7 @@ export class Game {
     handSouth = DEFAULT_HAND.slice();
     currentCard = null;
     turnCount = 0;
+    deck = THE_DECK.clone();
 
     /**
      * @param {Scenario} scenario
@@ -54,6 +56,9 @@ export class Game {
     initialize() {
         this.currentSideRaw = this.scenario.firstSide;
         this.scenario.placeUnitsOn(this);
+        this.deck.shuffle();
+        this.handSouth = this.deck.deal(this.scenario.commandSouth);
+        this.handNorth = this.deck.deal(this.scenario.commandNorth);
     }
 
     toString() {
@@ -202,6 +207,7 @@ export class Game {
         game.graveyard = this.graveyard.clone();
         game.orderedUnits = this.orderedUnits.slice();
         game.currentCard = this.currentCard;
+        game.deck = this.deck.clone();
         return game;
     }
 
@@ -474,17 +480,20 @@ export class Game {
         } else {
             this.handSouth = this.handSouth.filter(c => c !== card);
         }
+        this.deck.discard(card);
     }
 
     drawCard(side) {
         if (!side) {
             side = this.currentSide;
         }
         if (side === this.scenario.sideNorth) {
-            this.handNorth = DEFAULT_HAND.slice();
+            this.handNorth.push(this.deck.deal(1)[0]);
         } else {
-            this.handSouth = DEFAULT_HAND.slice();
+            this.handSouth.push(this.deck.deal(1)[0]);
         }
+        console.log(`Hand N: ${this.handNorth.map(c => c.name)}`);
+        console.log(`Hand S: ${this.handSouth.map(c => c.name)}`);
     }
 
     neighbors(hex) {