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// Copyright 2019 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
import {Annotation, Position} from './position'
import {Socket} from './gtp_socket'
import {Color, Move, N, Nullable, gtpColor, movesEqual, setBoardSize, stonesEqual, toGtp} from './base'
import {Graph} from './graph'
import * as lyr from './layer'
import {Log} from './log'
import {Board} from './board'
import * as util from './util'
class Player {
gtp = new Socket();
board: Board;
log: Log;
activePosition: Nullable<Position>;
latestPosition: Nullable<Position>;
numWins = 0;
nameElem: HTMLElement;
scoreElem: HTMLElement;
capturesElem: HTMLElement;
timeElapsedElem: HTMLElement;
timeTotalElem: HTMLElement;
private genmoveTimerId = 0;
private genmoveStartTimeSecs = 0;
private genmoveTotalTimeSecs = 0;
private searchLayer: lyr.Layer;
private pvLayer: lyr.Layer;
private dummyPosition: Position;
private bookmarks: Element[] = [];
constructor(public color: Color, public name: string) {
this.dummyPosition = new Position({
id: `${name}-dummy-position`,
moveNum: 0,
toPlay: 'b',
});
let gtpCol = gtpColor(color);
this.log = new Log(`${gtpCol}-log`, `${gtpCol}-console`);
let elem = util.getElement(`${gtpCol}-board`);
this.searchLayer = new lyr.Search();
this.pvLayer = new lyr.Variation('pv');
this.board = new Board(elem, this.dummyPosition, [
new lyr.Label(),
new lyr.BoardStones(),
this.searchLayer,
this.pvLayer,
new lyr.Annotations()]);
this.pvLayer.show = false;
this.log.onConsoleCmd((cmd: string) => {
this.gtp.send(cmd).then(() => { this.log.scroll(); });
});
this.gtp.onText((line: string) => {
this.log.log(line);
if (this.activePosition == this.latestPosition) {
this.log.scroll();
}
});
this.newGame()
}
newGame() {
this.log.clear();
this.bookmarks = [];
this.activePosition = null;
this.latestPosition = null;
this.board.position = this.dummyPosition;
this.genmoveTotalTimeSecs = 0;
// Look up all HTML elements each game because the players swap sides.
let gtpCol = gtpColor(this.color);
this.nameElem = util.getElement(`${gtpCol}-name`);
this.scoreElem = util.getElement(`${gtpCol}-score`);
this.capturesElem = util.getElement(`${gtpCol}-captures`);
this.timeElapsedElem = util.getElement(`${gtpCol}-time-elapsed`);
this.timeTotalElem = util.getElement(`${gtpCol}-time-total`);
}
addPosition(position: Position) {
if (this.latestPosition == null) {
this.activePosition = position;
} else {
this.latestPosition.children.push(position);
position.parent = this.latestPosition;
}
this.latestPosition = position;
}
updatePosition(update: Position.Update) {
if (this.latestPosition == null) {
return;
}
if (update.id != this.latestPosition.id) {
console.log(`update ${update.id} doesn't match latest position ${this.latestPosition.id}`);
return;
}
this.latestPosition.update(update);
if (this.activePosition == this.latestPosition) {
this.board.update(update);
}
}
selectMove(moveNum: number) {
if (this.activePosition == null) {
return;
}
let position = this.activePosition;
while (position.moveNum < moveNum && position.children.length > 0) {
position = position.children[0];
}
while (position.moveNum > moveNum && position.parent != null) {
position = position.parent;
}
this.activePosition = position;
this.board.setPosition(position);
this.pvLayer.show = this.color != position.toPlay;
this.searchLayer.show = !this.pvLayer.show;
}
startGenmoveTimer() {
this.genmoveStartTimeSecs = Date.now() / 1000;
this.genmoveTimerId = window.setInterval(() => {
this.updateTimerDisplay(
Date.now() / 1000 - this.genmoveStartTimeSecs,
this.genmoveTotalTimeSecs);
}, 1000);
}
stopGenmoveTimer() {
this.genmoveTotalTimeSecs += Date.now() / 1000 - this.genmoveStartTimeSecs;
window.clearInterval(this.genmoveTimerId);
this.genmoveTimerId = 0;
this.updateTimerDisplay(0, this.genmoveTotalTimeSecs);
}
setBookmark(moveNum: number) {
if (this.log.logElem.lastElementChild != null) {
this.bookmarks[moveNum] = this.log.logElem.lastElementChild;
}
}
scrollToBookmark(moveNum: number) {
if (this.bookmarks[moveNum] != null) {
this.bookmarks[moveNum].scrollIntoView();
}
}
private updateTimerDisplay(elapsed: number, total: number) {
this.timeElapsedElem.innerText = this.formatDuration(elapsed);
this.timeTotalElem.innerText = this.formatDuration(total);
}
private formatDuration(durationSecs: number) {
durationSecs = Math.floor(durationSecs);
let s = durationSecs % 60;
let m = Math.floor((durationSecs / 60)) % 60;
let h = Math.floor(durationSecs / 3600);
let ss = s < 10 ? '0' + s : s.toString();
let mm = m < 10 ? '0' + m : m.toString();
let hh = h < 10 ? '0' + h : m.toString();
return `${hh}:${mm}:${ss}`;
}
}
class ReadsGraph extends Graph {
private plots: number[][] = [[], []];
constructor(elem: string) {
super(elem, {
xStart: 0,
xEnd: 10,
yStart: 10,
yEnd: 0,
xTicks: true,
yTicks: true,
marginTop: 0.05,
marginBottom: 0.05,
marginLeft: 0.08,
marginRight: 0.05,
});
this.draw();
}
newGame() {
for (let plot of this.plots) {
plot.length = 0;
}
this.xEnd = 10;
this.yStart = 10;
this.draw();
}
drawImpl() {
this.xEnd = Math.max(this.xEnd, this.moveNum);
super.drawImpl();
// Draw a dotted line for the current move number.
this.drawPlot(
[[this.moveNum, this.yStart], [this.moveNum, this.yEnd]], {
dash: [0, 3],
width: 1,
style: '#96928f',
snap: true,
});
for (let i = 0; i < this.plots.length; ++i) {
let plot = this.plots[i];
let points: number[][] = [];
for (let x = 0; x < plot.length; ++x) {
if (plot[x] != null) {
points.push([x, plot[x]]);
}
}
this.drawPlot(points, {
width: 3,
style: i == 0 ? '#fff' : '#000'
});
}
let pr = util.pixelRatio();
let ctx = this.ctx;
let textHeight = 0.06 * ctx.canvas.height;
ctx.font = `${textHeight}px sans-serif`;
ctx.fillStyle = '#96928f';
ctx.textAlign = 'right';
ctx.textBaseline = 'middle';
let y = this.yTickPoints[this.yTickPoints.length - 1];
ctx.fillText(y.toString(), -6 * pr, this.yScale * (y - this.yStart));
}
update(position: Position) {
if (position.treeStats.maxDepth > 0) {
let plot = position.toPlay == Color.Black ? this.plots[1] : this.plots[0];
plot[position.moveNum] = position.treeStats.maxDepth;
this.yStart = Math.max(this.yStart, position.treeStats.maxDepth);
}
this.xEnd = Math.max(this.xEnd, position.moveNum);
this.draw();
}
}
class WinrateGraph extends Graph {
private plots: number[][] = [[], []];
constructor(elem: string) {
super(elem, {xStart: -1, xEnd: 1, yStart: 0, yEnd: 10, yTicks: true});
}
newGame() {
for (let plot of this.plots) {
plot.length = 0;
}
this.yEnd = 10;
this.moveNum = 0;
this.draw();
}
drawImpl() {
this.yEnd = Math.max(this.yEnd, this.moveNum);
super.drawImpl();
let pr = util.pixelRatio();
let ctx = this.ctx;
// Draw a dotted line for the current move number.
this.drawPlot(
[[this.xStart, this.moveNum], [this.xEnd, this.moveNum]], {
dash: [0, 3],
width: 1,
style: '#96928f',
snap: true,
});
// Draw the plots.
for (let i = 0; i < this.plots.length; ++i) {
let plot = this.plots[i];
let points: number[][] = [];
for (let y = 0; y < plot.length; ++y) {
if (plot[y] != null) {
points.push([-plot[y], y]);
}
}
this.drawPlot(points, {
width: 3,
style: i == 0 ? '#fff' : '#000',
});
}
}
update(position: Position) {
if (position.n > 0) {
// Q is only valid if we've performed at least one read.
let plot = position.toPlay == Color.Black ? this.plots[1] : this.plots[0];
if (position.q != null) {
plot[position.moveNum] = position.q;
}
}
this.yEnd = Math.max(this.yEnd, position.moveNum);
this.draw();
}
}
// App base class used by the different Minigui UI implementations.
class VsApp {
private players: Player[] = [];
private black: Player; // = players[0]
private white: Player; // = players[1]
private currPlayer: Player;
private nextPlayer: Player;
private winrateGraph = new WinrateGraph('winrate-graph');
private readsGraph = new ReadsGraph('reads-graph');
private activeMoveNum = 0;
private maxMoveNum = 0;
private paused = false;
private engineThinking = false;
private gameOver = false;
private startNextGameTimerId: Nullable<number> = null;
constructor() {
this.connect().then(() => {
this.initEventListeners();
this.newGame();
});
}
private initEventListeners() {
for (let player of this.players) {
player.gtp.onData('mg-update', (j: Position.Update) => {
player.updatePosition(j);
if (player.latestPosition != null) {
this.winrateGraph.update(player.latestPosition);
this.readsGraph.update(player.latestPosition);
}
});
player.gtp.onData('mg-position', (j: Position.Definition | Position.Update) => {
let position = new Position(j as Position.Definition);
position.update(j);
this.maxMoveNum = Math.max(this.maxMoveNum, position.moveNum);
if (player.latestPosition != null && position.lastMove != null) {
// Copy the principal variation from the parent node.
let gtpMove = toGtp(position.lastMove);
let variation = player.latestPosition.variations.get(gtpMove);
if (variation != null && !position.variations.has(gtpMove)) {
variation = {
n: variation.n,
q: variation.q,
moves: variation.moves.slice(1),
};
position.variations.set(gtpMove, variation);
position.variations.set('pv', variation);
}
}
player.addPosition(position);
this.winrateGraph.update(position);
this.readsGraph.update(position);
if (player.board.position.moveNum + 1 == position.moveNum) {
this.selectMove(position.moveNum);
}
});
}
window.addEventListener('keydown', (e: KeyboardEvent) => {
if (this.isInLog(document.activeElement)) {
return;
}
let handled = true;
switch (e.key) {
case 'ArrowUp':
case 'ArrowLeft':
this.goBack(1);
break;
case 'ArrowRight':
case 'ArrowDown':
this.goForward(1);
break;
case 'PageUp':
this.goBack(10);
break;
case 'PageDown':
this.goForward(10);
break;
case 'Home':
this.goBack(Infinity);
break;
case 'End':
this.goForward(Infinity);
break;
default:
handled = false;
break;
}
if (handled) {
e.preventDefault();
return false;
}
});
window.addEventListener('wheel', (e: WheelEvent) => {
if (this.isInLog(e.target as Element)) {
return;
}
let delta: number;
if (Math.abs(e.deltaX) > Math.abs(e.deltaY)) {
delta = e.deltaX;
} else {
delta = e.deltaY;
}
if (delta < 0) {
this.goBack(1);
} else if (delta > 0) {
this.goForward(1);
}
});
let pauseElem = util.getElement('pause');
pauseElem.addEventListener('click', () => {
this.paused = !this.paused;
pauseElem.innerText = this.paused ? 'Resume' : 'Pause';
if (!this.paused && !this.engineThinking) {
if (this.gameOver) {
if (this.startNextGameTimerId != null) {
window.clearTimeout(this.startNextGameTimerId);
this.startNextGameTimerId = null;
}
this.startNextGame();
} else {
this.genmove();
}
}
});
}
private isInLog(elem: Nullable<Element>) {
while (elem != null) {
if (elem.classList.contains('log-container')) {
return true;
}
elem = elem.parentElement;
}
return false;
}
private goBack(n: number) {
this.selectMove(this.activeMoveNum - n);
}
private goForward(n: number) {
this.selectMove(this.activeMoveNum + n);
}
private selectMove(moveNum: number) {
this.activeMoveNum = Math.max(0, Math.min(moveNum, this.maxMoveNum));
for (let player of this.players) {
player.selectMove(this.activeMoveNum);
if (player.color == player.board.position.toPlay) {
player.nameElem.classList.add('underline');
} else {
player.nameElem.classList.remove('underline');
}
player.scrollToBookmark(moveNum);
}
this.winrateGraph.setMoveNum(this.activeMoveNum);
this.readsGraph.setMoveNum(this.activeMoveNum);
this.updatePositionInfo();
}
private onGameOver() {
this.gameOver = true;
this.currPlayer.gtp.send('final_score').then((score: string) => {
if (score[0] == 'B') {
this.black.numWins += 1;
} else {
this.white.numWins += 1;
}
this.updatePlayerDisplay();
}).finally(() => {
// Wait a few seconds, then start the next game.
this.startNextGameTimerId = window.setTimeout(() => {
if (!this.paused) {
this.startNextGame();
}
}, 5000);
});
}
private startNextGame() {
// Swap which engine is black and which is white, making sure the black
// board is always on the left.
for (let prop of ['color', 'board', 'log']) {
let b = this.black as any;
let w = this.white as any;
[b[prop], w[prop]] = [w[prop], b[prop]];
}
[this.black, this.white] = [this.white, this.black];
[this.currPlayer, this.nextPlayer] = [this.black, this.white];
this.newGame();
this.updatePlayerDisplay();
}
private updatePlayerDisplay() {
for (let player of this.players) {
player.nameElem.innerText = player.name;
player.scoreElem.innerText = player.numWins.toString();
}
}
private updatePositionInfo() {
let position = this.currPlayer.activePosition;
if (position != null) {
this.black.capturesElem.innerText = position.captures[0].toString();
this.white.capturesElem.innerText = position.captures[1].toString();
util.getElement('move-num').innerText = `move: ${this.activeMoveNum}`;
}
}
private genmove() {
let gtpCol = gtpColor(this.currPlayer.color);
this.engineThinking = true;
let currPosition = this.currPlayer.latestPosition;
if (currPosition != null) {
this.currPlayer.setBookmark(currPosition.moveNum);
}
this.currPlayer.startGenmoveTimer();
this.currPlayer.gtp.send(`genmove ${gtpCol}`).then((gtpMove: string) => {
if (gtpMove == 'resign') {
this.onGameOver();
}
if (this.currPlayer.latestPosition != null &&
this.currPlayer.latestPosition.gameOver) {
this.onGameOver();
} else {
if (currPosition != null) {
this.nextPlayer.setBookmark(currPosition.moveNum);
}
this.nextPlayer.gtp.send(`play ${gtpCol} ${gtpMove}`).then(() => {
[this.currPlayer, this.nextPlayer] = [this.nextPlayer, this.currPlayer];
if (!this.paused && !this.gameOver) {
this.genmove();
}
});
}
}).finally(() => {
this.engineThinking = false;
this.currPlayer.stopGenmoveTimer();
});
}
protected connect() {
let uri = `http://${document.domain}:${location.port}/minigui`;
let params = new URLSearchParams(window.location.search);
let p = params.get('gtp_debug');
let debug = (p != null) && (p == '' || p == '1' || p.toLowerCase() == 'true');
return fetch('config').then((response) => {
return response.json();
}).then((cfg: any) => {
// TODO(tommadams): Give cfg a real type.
// setBoardSize sets the global variable N to the board size for the game
// (as provided by the backend engine). The code uses N from hereon in.
setBoardSize(cfg.boardSize);
if (cfg.players.length != 2) {
throw new Error(`expected 2 players, got ${cfg.players}`);
}
let promises = [];
for (let i = 0; i < cfg.players.length; ++i) {
let color = [Color.Black, Color.White][i];
let name = cfg.players[i];
let player = new Player(color, name);
this.players.push(player);
promises.push(player.gtp.connect(uri, name, debug));
}
[this.black, this.white] = this.players;
[this.currPlayer, this.nextPlayer] = this.players;
return Promise.all(promises);
});
}
protected newGame() {
this.gameOver = false;
this.activeMoveNum = 0;
this.maxMoveNum = 0;
this.winrateGraph.newGame();
this.readsGraph.newGame();
this.updatePlayerDisplay();
let promises: Promise<any>[] = [];
for (let player of this.players) {
player.newGame();
promises.push(player.gtp.send('clear_board'));
}
Promise.all(promises).then(() => {
this.selectMove(0);
this.genmove();
});
}
}
(window as any)['app'] = new VsApp();