From 233160e17ff451e52621b10d5d00d99e7800c2db Mon Sep 17 00:00:00 2001 From: Tom Smeding Date: Sun, 1 Jul 2018 21:12:11 +0200 Subject: Interactor --- interactor/.gitignore | 1 + interactor/board.js | 160 +++++++++++ interactor/game.css | 28 ++ interactor/game.html | 25 ++ interactor/game.js | 345 +++++++++++++++++++++++ interactor/package-lock.json | 652 +++++++++++++++++++++++++++++++++++++++++++ interactor/package.json | 16 ++ interactor/server.js | 85 ++++++ 8 files changed, 1312 insertions(+) create mode 100644 interactor/.gitignore create mode 100644 interactor/board.js create mode 100644 interactor/game.css create mode 100644 interactor/game.html create mode 100644 interactor/game.js create mode 100644 interactor/package-lock.json create mode 100644 interactor/package.json create mode 100755 interactor/server.js (limited to 'interactor') diff --git a/interactor/.gitignore b/interactor/.gitignore new file mode 100644 index 0000000..c2658d7 --- /dev/null +++ b/interactor/.gitignore @@ -0,0 +1 @@ +node_modules/ diff --git a/interactor/board.js b/interactor/board.js new file mode 100644 index 0000000..35ba93a --- /dev/null +++ b/interactor/board.js @@ -0,0 +1,160 @@ +function colourValue(value) { + return value < 4; +} + +function parsePosition(str) { + if (str.length != 2) return null; + var a = str.toUpperCase().charCodeAt(0), b = str.charCodeAt(1); + if (a < 65 || a > 65+25) return null; + if (b < 48 || b > 48+9) return null; + return N * (N - (b - 48)) + a - 65; +} + +function parseMove(str) { + if (str.length != 5) return null; + if (str[2] != "-" && str[2] != " ") return null; + + var from, to; + from = parsePosition(str.substr(0, 2)); + if (from != null) { + to = parsePosition(str.substr(3, 2)); + if (to != null) { + return {from: from, to: to}; + } + } + + return null; +} + +function stringifyPosition(pos) { + return String.fromCharCode(65 + pos % N) + String.fromCharCode(48 + N - ~~(pos / N)); +} + +function stringifyMove(mv) { + return stringifyPosition(mv.from) + '-' + stringifyPosition(mv.to); +} + +function stringifyMoveExt(mv, captures) { + var s = stringifyMove(mv); + if (captures.length > 0) { + for (var i = 0; i < captures.length; i++) { + s += (i == 0 ? "x" : "/") + stringifyPosition(captures[i]); + } + } + return s; +} + + +function stoneFlankedH(pos, by) { + if (by & (WHITE|KING)) by = WHITE|KING; + return ((board[pos-1] & by) || (pos-1 == BOARDMID && board[BOARDMID] == EMPTY)) && + ((board[pos+1] & by) || (pos+1 == BOARDMID && board[BOARDMID] == EMPTY)); +} + +function stoneFlankedV(pos, by) { + if (by & (WHITE|KING)) by = WHITE|KING; + return ((board[pos-N] & by) || (pos-N == BOARDMID && board[BOARDMID] == EMPTY)) && + ((board[pos+N] & by) || (pos+N == BOARDMID && board[BOARDMID] == EMPTY)); +} + +function kingEncircled(pos) { + if (pos == BOARDMID) { + return board[pos-1] == BLACK && board[pos+1] == BLACK && + board[pos-N] == BLACK && board[pos+N] == BLACK; + } else if (pos == BOARDMID-1) { + return board[pos-1] == BLACK && board[pos-N] == BLACK && board[pos+N] == BLACK; + } else if (pos == BOARDMID+1) { + return board[pos+1] == BLACK && board[pos-N] == BLACK && board[pos+N] == BLACK; + } else if (pos == BOARDMID-N) { + return board[pos-1] == BLACK && board[pos+1] == BLACK && board[pos-N] == BLACK; + } else if (pos == BOARDMID+N) { + return board[pos-1] == BLACK && board[pos+1] == BLACK && board[pos+N] == BLACK; + } else { + var x = pos % N, y = ~~(pos / N); + return (x > 0 && x < N-1 && board[pos-1] == BLACK && board[pos+1] == BLACK) || + (y > 0 && y < N-1 && board[pos-N] == BLACK && board[pos+N] == BLACK); + } +} + +function applyMove(mv) { + board[mv.to] = board[mv.from]; + board[mv.from] = EMPTY; + var i = mv.to; + var x = i % N, y = ~~(i / N); + + var captures = []; + + if (x > 1 && board[i-1] != EMPTY && colourValue(board[i-1]) != colourValue(board[i])) { + if (board[i-1] == KING ? kingEncircled(i-1) : stoneFlankedH(i-1, board[i])) { + board[i-1] = EMPTY; + captures.push(i-1); + } + } + + if (y > 1 && board[i-N] != EMPTY && colourValue(board[i-N]) != colourValue(board[i])) { + if (board[i-N] == KING ? kingEncircled(i-N) : stoneFlankedV(i-N, board[i])) { + board[i-N] = EMPTY; + captures.push(i-N); + } + } + + if (x < N-2 && board[i+1] != EMPTY && colourValue(board[i+1]) != colourValue(board[i])) { + if (board[i+1] == KING ? kingEncircled(i+1) : stoneFlankedH(i+1, board[i])) { + board[i+1] = EMPTY; + captures.push(i+1); + } + } + + if (y < N-2 && board[i+N] != EMPTY && colourValue(board[i+N]) != colourValue(board[i])) { + if (board[i+N] == KING ? kingEncircled(i+N) : stoneFlankedV(i+N, board[i])) { + board[i+N] = EMPTY; + captures.push(i+N); + } + } + + return captures; +} + +function checkWin() { + for (var x = 0; x < N; x++) if (board[x] == KING) return 1; + for (var y = 0; y < N; y++) if (board[N * y] == KING) return 1; + for (var x = 0; x < N; x++) if (board[N * (N-1) + x] == KING) return 1; + for (var y = 0; y < N; y++) if (board[N * y + N-1] == KING) return 1; + + for (var i = 0; i < N * N; i++) { + if (board[i] == KING) return 0; + } + + return -1; +} + +function isValid(mv) { + if (mv.from < 0 || mv.from >= N * N || mv.to < 0 || mv.to >= N * N) return false; + if (mv.from == mv.to) return false; + if (board[mv.from] == EMPTY || board[mv.to] != EMPTY) return false; + + if (mv.to == BOARDMID) return false; + + var x1 = mv.from % N, y1 = ~~(mv.from / N); + var x2 = mv.to % N, y2 = ~~(mv.to / N); + if (x1 != x2 && y1 != y2) return false; + + if (x1 == x2) { + var delta = y2 < y1 ? -1 : 1; + for (var y = y1 + delta; y != y2; y += delta) { + if (board[N * y + x1] != EMPTY) return false; + } + } else { + var delta = x2 < x1 ? -1 : 1; + for (var x = x1 + delta; x != x2; x += delta) { + if (board[N * y1 + x] != EMPTY) return false; + } + } + + return true; +} + +function isValidForPlayer(mv, player) { + var mask = player == 1 ? WHITE|KING : BLACK; + return isValid(mv) && (board[mv.from] & mask) != 0; +} diff --git a/interactor/game.css b/interactor/game.css new file mode 100644 index 0000000..bce55f8 --- /dev/null +++ b/interactor/game.css @@ -0,0 +1,28 @@ +#cvs { + border: 1px #473d32 solid; +} + +.invisible { + display: none; +} + +#serverlog > div { + font-family: monospace; +} + +#movelog_container { + width: 500px; + height: 200px; + overflow-y: scroll; +} + +#movelog { + border-collapse: collapse; + width: 100%; + table-layout: fixed; +} + +#movelog td { + border: 1px #000000 solid; + width: 50%; +} diff --git a/interactor/game.html b/interactor/game.html new file mode 100644 index 0000000..20def4f --- /dev/null +++ b/interactor/game.html @@ -0,0 +1,25 @@ + + + +Hnefatafl interactor + + + + + + + +
+ +
+ + + +
+
+ +
+
+
+ + diff --git a/interactor/game.js b/interactor/game.js new file mode 100644 index 0000000..85674b1 --- /dev/null +++ b/interactor/game.js @@ -0,0 +1,345 @@ +"use strict"; + +var N = 9; +var EMPTY = 0, WHITE = 1, KING = 2, BLACK = 4; +var BOARDMID = N * ~~(N/2) + ~~(N/2); + +var cvs, ctx; +var cellSize = 40, cvsSize = N * cellSize + N+1; +var socket; +var playing = false, onturn = null, aiplayer = null; +var lastMove = null; + +var board; + +function rotateIndex(index, nturns) { + for (var i = 0; i < nturns % 4; i++) { + var x = index % N, y = ~~(index / N); + index = N * x + N-1 - y; + } + return index; +} + +function makeBoard() { + var bd = new Array(N * N); + for (var i = 0; i < N * N; i++) bd[i] = EMPTY; + + for (var i = 0; i < 4; i++) { + bd[rotateIndex(~~(N/2) - 1, i)] = BLACK; + bd[rotateIndex(~~(N/2) + 0, i)] = BLACK; + bd[rotateIndex(~~(N/2) + 1, i)] = BLACK; + bd[rotateIndex(N + ~~(N/2), i)] = BLACK; + + bd[rotateIndex(BOARDMID - 2 * N, i)] = WHITE; + bd[rotateIndex(BOARDMID - 1 * N, i)] = WHITE; + } + + bd[BOARDMID] = KING; + return bd; +} + +function setupBoard() { + board = makeBoard(); +} + +function cellX(i) {return (cellSize + 1) * (i % N);} +function cellY(i) {return (cellSize + 1) * ~~(i / N);} +function cellMidX(i) {return (cellSize + 1) * (i % N + 0.5);} +function cellMidY(i) {return (cellSize + 1) * (~~(i / N) + 0.5);} + +function redraw() { + ctx.fillStyle = "#e0c29f"; + ctx.fillRect(0, 0, cvsSize, cvsSize); + + ctx.fillStyle = "#c6ac8d"; + ctx.fillRect(cellX(BOARDMID), cellY(BOARDMID), cellSize, cellSize); + + ctx.strokeStyle = "#7a6a58"; + ctx.beginPath(); + for (var i = 1; i < N; i++) { + ctx.moveTo(0, cellY(N * i) - 0.5); + ctx.lineTo(cvsSize, cellY(N * i) - 0.5); + + ctx.moveTo(cellX(i) - 0.5, 0); + ctx.lineTo(cellX(i) - 0.5, cvsSize); + } + ctx.stroke(); + + var drawers = [ + function() {}, + function(px, py) { drawCircle(px, py, "#ffffff"); }, + function(px, py) { drawKing(px, py); }, + function() {}, + function(px, py) { drawCircle(px, py, "#000000"); }, + ]; + + for (var i = 0; i < N * N; i++) { + drawers[board[i]](cellMidX(i), cellMidY(i)); + } + + if (lastMove != null) { + var thickness = 3; + for (var i = 0; i < thickness; i++) { + var alpha = (thickness - i) / thickness; + alpha *= alpha; + ctx.strokeStyle = "rgba(165, 165, 247, " + alpha + ")"; + ctx.beginPath(); + var sz = cellSize - 2*i - 1; + ctx.rect(cellX(lastMove.from) + i + 0.5, cellY(lastMove.from) + i + 0.5, sz, sz); + ctx.rect(cellX(lastMove.to) + i + 0.5, cellY(lastMove.to) + i + 0.5, sz, sz); + ctx.stroke(); + } + } +} + +function drawCircle(x, y, clr) { + ctx.fillStyle = clr; + ctx.beginPath(); + ctx.arc(x, y, cellSize * 0.3, 0, 2 * Math.PI); + ctx.fill(); +} + +function drawKing(x, y) { + ctx.fillStyle = "#ffffff"; + ctx.strokeStyle = "#7a6a58"; + ctx.beginPath(); + + ctx.moveTo(x - cellSize * 0.25, y + cellSize * 0.25); + ctx.lineTo(x - cellSize * 0.3, y - cellSize * 0.25); + ctx.lineTo(x - cellSize * 0.15, y - cellSize * 0.05); + ctx.lineTo(x, y - cellSize * 0.25); + ctx.lineTo(x + cellSize * 0.15, y - cellSize * 0.05); + ctx.lineTo(x + cellSize * 0.3, y - cellSize * 0.25); + ctx.lineTo(x + cellSize * 0.25, y + cellSize * 0.25); + ctx.closePath(); + + ctx.stroke(); + ctx.fill(); +} + +function displayStatus(msg) { + document.getElementById("status").innerHTML = msg; +} + +function addMoveLog(player, mv, captures) { + if (captures == undefined) captures = []; + + var log = document.getElementById("movelog_tbody"); + var tr = document.createElement("tr"); + + var who = player == 1 ? "White" : "Black"; + if (player == aiplayer) who += " (AI)"; + + var td = document.createElement("td"); + td.appendChild(document.createTextNode(who)); + tr.appendChild(td); + + var desc = stringifyMoveExt(mv, captures); + if (checkWin() != 0) desc += "++"; + + td = document.createElement("td"); + td.appendChild(document.createTextNode(desc)); + tr.appendChild(td); + + log.appendChild(tr); + + tr.scrollIntoView(false); +} + +function addServerLog(msg) { + var div = document.createElement("div"); + div.appendChild(document.createTextNode(msg)); + document.getElementById("serverlog").appendChild(div); +} + +function openGame() { + socket = io(); + socket.on("message", function(msg) { + addServerLog(msg); + }); + + socket.on("open", function() { + playing = true; + onturn = -1; + aiplayer = null; + lastMove = null; + + document.getElementById("aifirst").classList.remove("invisible"); + + setupBoard(); + redraw(); + + addServerLog("Game opened."); + displayStatus("Make first move, or let the AI take the first move."); + }); + + socket.on("close", function() { + playing = false; + addServerLog("Game closed."); + displayStatus("Game closed."); + }); + + socket.on("line", function(line) { + var mv = parseMove(line); + if (mv != null) { + processMove(mv); + displayStatus("Your turn."); + } else { + var msg = "Invalid move received from server:\n" + line; + addServerLog(msg); + alert(msg); + } + }); + + socket.emit("open"); +} + +function humanMove(mv) { + if (aiplayer != null && onturn != -aiplayer) return; + if (!isValidForPlayer(mv, onturn)) { + displayStatus("That's an invalid move."); + return; + } + + if (aiplayer == null) { + aiplayer = -onturn; + } + + processMove(mv); + + socket.emit("line", stringifyMove(mv)); + displayStatus("Waiting for AI..."); +} + +function processMove(mv) { + var captures = applyMove(mv); + addMoveLog(onturn, mv, captures); + onturn = -onturn; + lastMove = mv; + redraw(); + + var win = checkWin(); + var msg = win == 1 ? "White won." : win == -1 ? "Black won." : null; + if (msg != null) { + var suffix = win != aiplayer ? "Congratulations!" : "Too bad."; + displayStatus(msg + " " + suffix); + addServerLog(msg); + } +} + +function hookListeners() { + var startx = null, starty = null, endx = null, endy = null; + var starti = null, endi = null; + + function calcI(x, y) { + x = Math.round(x / (cellSize + 1) - 0.5); + y = Math.round(y / (cellSize + 1) - 0.5); + if (x >= N) x = N - 1; + if (y >= N) y = N - 1; + return N * y + x; + } + + function updateStart(ev) { + var bbox = cvs.getBoundingClientRect(); + startx = ev.clientX - bbox.left; + starty = ev.clientY - bbox.top; + starti = calcI(startx, starty); + } + + function updateEnd(ev) { + var bbox = cvs.getBoundingClientRect(); + endx = ev.clientX - bbox.left; + endy = ev.clientY - bbox.top; + endi = calcI(endx, endy); + if (endi % N != starti % N && ~~(endi / N) != ~~(starti / N)) { + var dx = Math.abs(endi % N - starti % N); + var dy = Math.abs(~~(endi / N) - ~~(starti / N)); + if (dx >= dy) endi = N * ~~(starti / N) + endi % N; + else endi = N * ~~(endi / N) + starti % N; + } + } + + function reset() { + startx = starty = endx = endy = null; + starti = endi = null; + } + + function drawArrow() { + ctx.beginPath(); + ctx.moveTo(-cellSize * 0.2, -cellSize * 0.15); + ctx.lineTo(0, 0); + ctx.lineTo(-cellSize * 0.2, cellSize * 0.15); + ctx.stroke(); + } + + cvs.addEventListener("mousedown", function(ev) { + if (!playing || (aiplayer != null && onturn == aiplayer)) return; + updateStart(ev); + if (board[starti] == EMPTY || (onturn == 1 ? board[starti] & BLACK : board[starti] & (WHITE|KING))) { + reset(); + } + }); + + cvs.addEventListener("mouseleave", function() { + if (startx == null) return; + reset(); + redraw(); + }); + + cvs.addEventListener("mousemove", function(ev) { + if (startx == null) return; + updateEnd(ev); + redraw(); + + ctx.strokeStyle = "#ff0000"; + ctx.lineWidth = 2; + + ctx.beginPath(); + var x1 = (starti % N + 0.5) * (cellSize + 1), y1 = (~~(starti / N) + 0.5) * (cellSize + 1); + var x2 = (endi % N + 0.5) * (cellSize + 1), y2 = (~~(endi / N) + 0.5) * (cellSize + 1); + x1 = ~~x1 + 1; y1 = ~~y1 + 1; x2 = ~~x2 + 1; y2 = ~~y2 + 1; + ctx.moveTo(x1, y1); + ctx.lineTo(x2, y2); + ctx.stroke(); + + ctx.save(); + ctx.translate(x2, y2); + if (endi % N > starti % N) ctx.rotate(0); + else if (~~(endi / N) > ~~(starti / N)) ctx.rotate(Math.PI / 2); + else if (endi % N < starti % N) ctx.rotate(Math.PI); + else if (~~(endi / N) < ~~(starti / N)) ctx.rotate(Math.PI * 3 / 2); + drawArrow(); + ctx.restore(); + + ctx.lineWidth = 1; + }); + + cvs.addEventListener("mouseup", function(ev) { + if (startx == null) return; + updateEnd(ev); + console.log(starti, endi); + humanMove({from: starti, to: endi}); + reset(); + redraw(); + }); + + + document.getElementById("aifirst").addEventListener("click", function() { + if (aiplayer == null) { // paranoia + aiplayer = -1; + socket.emit("line", "Start"); + displayStatus("Requested first move from AI..."); + } + document.getElementById("aifirst").classList.add("invisible"); + }); +} + +window.addEventListener("load", function() { + cvs = document.getElementById("cvs"); + ctx = cvs.getContext("2d"); + + setupBoard(); + redraw(); + hookListeners(); + openGame(); +}); diff --git a/interactor/package-lock.json b/interactor/package-lock.json new file mode 100644 index 0000000..1718395 --- /dev/null +++ b/interactor/package-lock.json @@ -0,0 +1,652 @@ +{ + "name": "interactor", + "version": "0.1.0", + "lockfileVersion": 1, + "requires": true, + "dependencies": { + "accepts": { + "version": "1.3.5", + "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.5.tgz", + "integrity": "sha1-63d99gEXI6OxTopywIBcjoZ0a9I=", + "requires": { + "mime-types": "~2.1.18", + "negotiator": "0.6.1" + } + }, + "after": { + "version": "0.8.2", + "resolved": "https://registry.npmjs.org/after/-/after-0.8.2.tgz", + "integrity": "sha1-/ts5T58OAqqXaOcCvaI7UF+ufh8=" + }, + "array-flatten": { + "version": "1.1.1", + "resolved": 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a/interactor/package.json b/interactor/package.json new file mode 100644 index 0000000..b0508c6 --- /dev/null +++ b/interactor/package.json @@ -0,0 +1,16 @@ +{ + "name": "interactor", + "version": "0.1.0", + "description": "", + "main": "server.js", + "scripts": { + "test": "echo \"Error: no test specified\" && exit 1", + "start": "node server.js" + }, + "author": "Tom Smeding (https://tomsmeding.com)", + "license": "MIT", + "dependencies": { + "express": "^4.16.3", + "socket.io": "^2.1.1" + } +} diff --git a/interactor/server.js b/interactor/server.js new file mode 100755 index 0000000..88e9f10 --- /dev/null +++ b/interactor/server.js @@ -0,0 +1,85 @@ +#!/usr/bin/env node +const http = require("http"); +const express = require("express"); +const socketio = require("socket.io"); +const child_process = require("child_process"); + +const PORT = 8080; + +const app = express(); +const server = http.Server(app); +const io = socketio(server); + +// gameid -> {pl: [socket]*{1,2}, started: Bool, nextServe: Int, score: [Int, Int]} +const games = new Map(); + +app.get("/", (req, res) => { + res.sendFile(__dirname + "/game.html"); +}); + +const staticFiles = [ + "/game.css", + "/game.js", + "/board.js", +]; + +app.get(staticFiles, (req, res) => { + res.sendFile(__dirname + req.path); +}); + +io.on("connection", (conn) => { + let proc = null; + + conn.on("open", () => { + console.log("open"); + + proc = child_process.spawn("../main", { + stdio: ["pipe", "pipe", process.stderr] + }); + + conn.emit("open"); + + let lineBuffer = ""; + + proc.stdout.on("data", (data) => { + lineBuffer += data; + let idx; + while ((idx = lineBuffer.indexOf("\n")) != -1) { + conn.emit("line", lineBuffer.slice(0, idx)); + lineBuffer = lineBuffer.slice(idx + 1); + } + }); + + proc.on("close", () => { + if (proc != null) { + console.log("close"); + conn.emit("close"); + proc.kill(); + proc = null; + } + }); + + proc.on("error", (err) => { + if (proc != null) { + console.log("close"); + conn.emit("close"); + conn.emit("message", "The AI process encountered an error."); + proc = null; + } + }); + }); + + conn.on("disconnect", () => { + if (proc != null) { + console.log("close"); + proc.kill(); + proc = null; + } + }); + + conn.on("line", (line) => { + proc.stdin.write(line + "\n"); + }); +}); + +server.listen(PORT, () => console.log("Listening on port " + PORT)); -- cgit v1.2.3-70-g09d2