author | Oleksandr Gavenko <gavenkoa@gmail.com> |
Fri, 03 Jul 2015 10:01:02 +0300 | |
changeset 164 | cdde49008500 |
parent 163 | 87479ae56889 |
child 169 | 5a17638f0dca |
permissions | -rw-r--r-- |
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"use strict"; |
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/** @fileOverview AI modules. */ |
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/** @module */ |
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var ai = {}; |
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/** Directions. @constant */ |
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ai.dirs = ["up", "right", "down", "left"]; |
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/** Directions in random order. */ |
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ai.randDirs = function() { |
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var idxs = [0, 1, 2, 3]; |
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for (var i = idxs.length - 1; i > 0; i--) { |
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var j = Math.floor(Math.random()*(i+1)); |
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var swap = idxs[j]; idxs[j] = idxs[i]; idxs[i] = swap; |
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} |
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return [ai.dirs[idxs[0]], ai.dirs[idxs[1]], ai.dirs[idxs[2]], ai.dirs[idxs[3]]]; |
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} |
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/** Possible direction check function names ordered by ai.dirs. @constant */ |
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ai.canFn = ["canUp", "canRight", "canDown", "canLeft"]; |
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/** Possible merge function names ordered by ai.dirs. @constant */ |
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ai.mergeFn = ["upMerges", "rightMerges", "downMerges", "leftMerges"]; |
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/** Create empty 'to' if argument missing. */ |
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ai.copyObj = function(from, to) { |
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if (to == null || typeof to !== "object") |
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to = {}; |
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if (from == null || typeof from !== "object") |
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return to; |
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for (var attr in from) { |
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if (from.hasOwnProperty(attr)) |
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to[attr] = from[attr]; |
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} |
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return to; |
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} |
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ai.brdCache = function() { |
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this.cache = []; |
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} |
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ai.brdCache.prototype.get = function(brd) { |
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var compr = brd.compress(); |
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var subCache = this.cache[compr[0]]; |
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if (subCache) { |
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return subCache[compr[1]]; |
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} |
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return undefined; |
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} |
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ai.brdCache.prototype.put = function(brd, val) { |
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var compr = brd.compress(); |
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var subCache = this.cache[compr[0]]; |
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if (subCache) { |
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subCache[compr[1]] = val; |
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} else { |
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this.cache[compr[0]] = []; |
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this.cache[compr[0]][compr[1]] = val; |
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} |
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} |
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// Each strategy is a function that except current board position as 2d array and context from |
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// previous call to share state/precomputed values between calls. |
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//////////////////////////////////////////////////////////////// |
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// Blind random AI. |
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//////////////////////////////////////////////////////////////// |
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/** Blind random AI. |
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* @param {Board} brd board engine from board.js |
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* @constructor */ |
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ai.BlindRandom = function(brd) { |
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this.brd = brd; |
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} |
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/** Select best direction for next step. */ |
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ai.BlindRandom.prototype.analyse = function(brd2d) { |
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var origBrd = new this.brd(brd2d); |
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while (true) { |
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var rnd = Math.floor(Math.random()*4); |
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if (origBrd[ai.canFn[rnd]]()) |
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return ai.dirs[rnd]; |
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} |
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} |
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/* Mark that next board will be unrelated to previous, so any stored precompution can be cleared. */ |
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ai.BlindRandom.prototype.cleanup = function() { } |
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//////////////////////////////////////////////////////////////// |
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// Blind weight random AI. |
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//////////////////////////////////////////////////////////////// |
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/** |
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* @name ai.BlindWeightRandom.cfg |
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* @namespace |
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* @property {number} left weight |
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* @property {number} right weight |
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* @property {number} up weight |
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* @property {number} down weight |
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*/ |
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|
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/** Blind weight random AI. |
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* @param {Board} brd board engine from board.js |
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* @param {ai.BlindWeightRandom.cfg} cfg configuration settings |
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* @constructor */ |
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ai.BlindWeightRandom = function(brd, cfg) { |
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this.brd = brd; |
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this.cfg = ai.copyObj(ai.BlindWeightRandom.bestCfg); |
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ai.copyObj(cfg, this.cfg); |
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var total = this.cfg.left + this.cfg.right + this.cfg.up + this.cfg.down; |
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this.threshold1 = this.cfg.left/total; |
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this.threshold2 = (this.cfg.left + this.cfg.down)/total; |
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this.threshold3 = (this.cfg.left + this.cfg.down + this.cfg.right)/total; |
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} |
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ai.BlindWeightRandom.bestCfg = { left: 1, right: 16, up: 4, down: 8 }; |
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/** Select best direction for next step. */ |
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ai.BlindWeightRandom.prototype.analyse = function(brd2d) { |
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var origBrd = new this.brd(brd2d); |
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while (true) { |
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var rnd = Math.random(); |
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if (rnd < this.threshold1) |
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var dir = 0; |
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else if (rnd < this.threshold2) |
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var dir = 1; |
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else if (rnd < this.threshold3) |
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var dir = 2; |
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else |
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var dir = 3; |
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if (origBrd[ai.canFn[dir]]()) |
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return ai.dirs[dir]; |
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} |
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} |
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/* Mark that next board will be unrelated to previous, so any stored precompution can be cleared. */ |
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ai.BlindWeightRandom.prototype.cleanup = function() { } |
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//////////////////////////////////////////////////////////////// |
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// Blind cycle AI. |
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//////////////////////////////////////////////////////////////// |
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141 |
|
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/** |
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* @name ai.BlindCycle.cfg |
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* @namespace |
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* @property {boolean} whilePossible move in one direction while possible |
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* @property {boolean} down switch direction clockwise |
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*/ |
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/** Blind cycle AI. |
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* @param {Board} brd board engine from board.js |
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* @param {ai.BlindCycle.cfg} cfg configuration settings |
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* @constructor */ |
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ai.BlindCycle = function(brd, cfg) { |
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this.brd = brd; |
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this.cfg = cfg || {}; |
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this.cfg.whilePossible = this.cfg.whilePossible || false; |
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this.cfg.clockwise = this.cfg.clockwise || false; |
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} |
59 | 159 |
ai.BlindCycle.dirs = ["left", "down", "right", "up"]; |
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ai.BlindCycle.canFn = ["canLeft", "canDown", "canRight", "canUp"]; |
59 | 161 |
ai.BlindCycle.prototype.nextDir = function(dir) { |
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if (this.cfg.clockwise) |
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return (dir + (4-1)) % 4; |
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else |
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return (dir + 1) % 4; |
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} |
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/** Select best direction for next step. */ |
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ai.BlindCycle.prototype.analyse = function(brd2d) { |
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var origBrd = new this.brd(brd2d); |
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this.prevDir = this.prevDir || 0; |
29 | 171 |
if (!this.cfg.whilePossible) |
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this.prevDir = this.nextDir(this.prevDir); |
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while (true) { |
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if (origBrd[ai.BlindCycle.canFn[this.prevDir]]()) |
59 | 175 |
return ai.BlindCycle.dirs[this.prevDir]; |
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this.prevDir = this.nextDir(this.prevDir); |
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} |
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} |
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/* Mark that next board will be unrelated to previous, so any stored precompution can be cleared. */ |
59 | 180 |
ai.BlindCycle.prototype.cleanup = function() { |
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delete this.prevDir; |
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} |
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|
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//////////////////////////////////////////////////////////////// |
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// 1 step deep with linear weight function on score, max value, |
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// bonuses for max value stay at corner or edge and bonuses |
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// for each free field. |
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//////////////////////////////////////////////////////////////// |
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|
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/** |
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* Defines coefficient for linear resulted weight function. |
99 | 194 |
* @name ai.OneStepAhead.cfg |
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* @namespace |
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* @property {number} scoreCoef multiplicator for score |
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* @property {number} maxValCoef multiplicator for max value |
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* @property {number} cornerBonus bonus for max value at board corner |
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* @property {number} edgeBonus bonus for max value at board edge |
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* @property {number} freeBonus bonus for each free cell |
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*/ |
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|
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/** 1 step deep with * AI. |
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* @param {Board} brd board engine from board.js |
99 | 205 |
* @param {ai.OneStepAhead.cfg} cfg configuration settings |
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* @constructor */ |
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ai.OneStepAhead = function(brd, cfg) { |
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this.brd = brd; |
99 | 209 |
this.cfg = ai.copyObj(ai.OneStepAhead.bestCfg); |
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ai.copyObj(cfg, this.cfg); |
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} |
99 | 212 |
ai.OneStepAhead.bestCfg = {scoreCoef: 1, maxValCoef: 0, cornerBonus: 0, edgeBonus: 0, freeBonus: 0}; |
213 |
ai.OneStepAhead.prototype.weight = function(brd) { |
|
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var weight = 0; |
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if (this.cfg.scoreCoef > 0) |
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weight += this.cfg.scoreCoef * brd.score(); |
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var max = brd.maxVal(); |
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if (this.cfg.maxValCoef > 0) |
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weight += this.cfg.maxValCoef * max; |
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if (this.cfg.cornerBonus > 0 && brd.atCorner(max)) |
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weight += this.cfg.cornerBonus; |
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if (this.cfg.edgeBonus > 0 && brd.atEdge(max)) |
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weight += this.cfg.edgeBonus; |
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if (this.cfg.freeBonus > 0) |
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weight += this.cfg.freeBonus * brd.freeCnt(); |
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return weight; |
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} |
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/** Select best direction for next step. */ |
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ai.OneStepAhead.prototype.analyse = function(brd2d) { |
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var origBrd = new this.brd(brd2d); |
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var nextBrd = new this.brd(); |
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var maxWeight = -1; |
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var bestDir; |
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for (var i = 0; i < ai.dirs.length; i++) { |
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var dir = ai.dirs[i]; |
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if (origBrd[dir](nextBrd)) { |
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var weight = this.weight(nextBrd); |
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if (maxWeight < weight) { |
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bestDir = dir; |
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maxWeight = weight; |
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} |
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} |
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} |
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return bestDir; |
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} |
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/* Mark that next board will be unrelated to previous, so any stored precompution can be cleared. */ |
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ai.OneStepAhead.prototype.cleanup = function() { } |
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248 |
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//////////////////////////////////////////////////////////////// |
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// N level deep on score value without random simulation. |
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//////////////////////////////////////////////////////////////// |
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|
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/** |
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* Defines coefficient for linear resulted weight function. |
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* @name ai.StaticDeepMerges.cfg |
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* @namespace |
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* @property {number} scoreCoef multiplicator for score |
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* @property {number} maxValCoef multiplicator for max value |
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* @property {number} cornerBonus bonus for max value at board corner |
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* @property {number} edgeBonus bonus for max value at board edge |
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* @property {number} freeBonus bonus for each free cell |
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*/ |
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|
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/** Deep merges AI without random simulation. |
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* @param {Board} brd board engine from board.js |
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* @param {Object} cfg configuration settings |
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* @constructor */ |
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ai.StaticDeepMerges = function(brd, cfg) { |
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this.brd = brd; |
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this.cfg = ai.copyObj(ai.OneStepAhead.bestCfg); |
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ai.copyObj(cfg, this.cfg); |
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} |
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ai.StaticDeepMerges.bestCfg = {scoreCoef: 1, maxValCoef: 0, cornerBonus: 0, edgeBonus: 0, freeBonus: 0, weightThreshold: 10}; |
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ai.StaticDeepMerges.prototype.weight = function(brd) { |
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var weight = 0; |
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if (this.cfg.scoreCoef > 0) |
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weight += this.cfg.scoreCoef * brd.score(); |
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var max = brd.maxVal(); |
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if (this.cfg.maxValCoef > 0) |
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weight += this.cfg.maxValCoef * max; |
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if (this.cfg.cornerBonus > 0 && brd.atCorner(max)) |
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weight += this.cfg.cornerBonus; |
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if (this.cfg.edgeBonus > 0 && brd.atEdge(max)) |
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weight += this.cfg.edgeBonus; |
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if (this.cfg.freeBonus > 0) |
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weight += this.cfg.freeBonus * brd.freeCnt(); |
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return weight; |
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} |
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291 |
/** Select best direction for next step. */ |
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ai.StaticDeepMerges.prototype.analyse = function(brd2d) { |
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var origBrd = new this.brd(brd2d); |
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var nextBrd = new this.brd(); |
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var prevScore = -1, nextScore = -1; |
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var maxWeight = -1; |
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var bestDir; |
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298 |
for (var i = 0; i < ai.dirs.length; i++) { |
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299 |
var dir = ai.dirs[i]; |
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300 |
if (origBrd[dir](nextBrd)) { |
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301 |
var weight = this.evalFn(nextBrd); |
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var ok = (weight - maxWeight) > this.cfg.weightThreshold; |
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if ( ! ok && maxWeight <= weight) { |
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nextScore = this.weight(nextBrd); |
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ok = prevScore < nextScore; |
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} |
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if (ok) { |
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prevScore = nextScore; |
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maxWeight = weight; |
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bestDir = dir; |
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311 |
} |
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312 |
} |
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313 |
} |
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314 |
return bestDir; |
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315 |
} |
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ai.StaticDeepMerges.prototype.evalFn = function(brd) { |
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317 |
var currScore = brd.score(); |
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var maxWeight = currScore; |
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var nextBrd = new this.brd(); |
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320 |
for (var i = 0; i < ai.dirs.length; i++) { |
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321 |
if (brd[ai.dirs[i]](nextBrd)) { |
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var score = nextBrd.score(); |
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if (score > currScore) |
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maxWeight = Math.max(maxWeight, this.evalFn(nextBrd)); |
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325 |
} |
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326 |
} |
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327 |
return maxWeight; |
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} |
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329 |
/* Mark that next board will be unrelated to previous, so any stored precompution can be cleared. */ |
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330 |
ai.StaticDeepMerges.prototype.cleanup = function() { } |
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331 |
|
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332 |
|
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|
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334 |
//////////////////////////////////////////////////////////////// |
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335 |
// N level deep with random simulation. |
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|
336 |
//////////////////////////////////////////////////////////////// |
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|
337 |
|
57
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|
338 |
/** |
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|
339 |
* Defines coefficient for linear resulted weight function. |
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|
340 |
* @name ai.expectimax.cfg |
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|
341 |
* @namespace |
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|
342 |
* @property {number} scoreCoef multiplicator for score |
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|
343 |
* @property {number} maxValCoef multiplicator for max value |
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|
344 |
* @property {number} cornerBonus bonus for max value at board corner |
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|
345 |
* @property {number} edgeBonus bonus for max value at board edge |
110
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Join N level deep on score value without random simulation AIs and add
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diff
changeset
|
346 |
* @property {number} freeBonus bonus for each free cell |
57
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|
347 |
*/ |
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changeset
|
348 |
|
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changeset
|
349 |
/** N level deep with random simulation. |
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|
350 |
* @param {Board} brd board engine from board.js |
57
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|
351 |
* @param {ai.expectimax.cfg} cfg configuration settings |
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|
352 |
* @constructor */ |
160
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|
353 |
ai.expectimax = function(brd, cfg) { |
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|
354 |
this.brd = brd; |
74
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changeset
|
355 |
this.cfg = ai.copyObj(ai.expectimax.bestCfg); |
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changeset
|
356 |
ai.copyObj(cfg, this.cfg); |
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changeset
|
357 |
if (this.cfg.balance <= 0) |
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changeset
|
358 |
this.cfg.balance = ai.expectimax.bestCfg.balance; |
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changeset
|
359 |
if ( this.cfg.balance > 1) |
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diff
changeset
|
360 |
this.cfg.balance = 1; |
126
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changeset
|
361 |
if (!this.cfg.depth || this.cfg.depth < 0 || 9 <= this.cfg.depth) |
74
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changeset
|
362 |
this.cfg.depth = ai.expectimax.bestCfg.depth; |
21
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changeset
|
363 |
} |
126
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changeset
|
364 |
ai.expectimax.bestCfg = {balance: .9, depth: 5, scoreCoef: 1, maxValCoef: 0, cornerBonus: 0, edgeBonus: 0, freeBonus: 0}; |
74
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diff
changeset
|
365 |
ai.expectimax.prototype.weight = function(brd) { |
93cb48b73b39
Enable config for expectimax. Fix weight function for expectimax.
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diff
changeset
|
366 |
var score = 0; |
122
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changeset
|
367 |
var cfg = this.cfg; |
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|
368 |
if (cfg.scoreCoef > 0) |
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changeset
|
369 |
score += cfg.scoreCoef * brd.score(); |
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changeset
|
370 |
if (cfg.maxValCoef > 0 || cfg.cornerBonus > 0 || cfg.edgeBonus > 0) { |
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changeset
|
371 |
var max = brd.maxVal(); |
122
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changeset
|
372 |
if (cfg.maxValCoef > 0) |
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Don't calculate max value if it isn't used.
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changeset
|
373 |
score += cfg.maxValCoef * max; |
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changeset
|
374 |
if (cfg.cornerBonus > 0) |
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changeset
|
375 |
if (brd.atCorner(max)) |
4cc40a51742a
Don't calculate max value if it isn't used.
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changeset
|
376 |
score += cfg.cornerBonus; |
4cc40a51742a
Don't calculate max value if it isn't used.
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diff
changeset
|
377 |
if (cfg.edgeBonus > 0) |
4cc40a51742a
Don't calculate max value if it isn't used.
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changeset
|
378 |
if (brd.atEdge(max)) |
4cc40a51742a
Don't calculate max value if it isn't used.
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changeset
|
379 |
score += cfg.edgeBonus; |
4cc40a51742a
Don't calculate max value if it isn't used.
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diff
changeset
|
380 |
} |
135
935a500cea3b
Fix: code in wrong scope.
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126
diff
changeset
|
381 |
if (cfg.freeBonus > 0) |
148
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changeset
|
382 |
score += cfg.freeBonus * brd.freeCnt(); |
21
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Expectimax implementation.
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diff
changeset
|
383 |
return score; |
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Expectimax implementation.
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changeset
|
384 |
} |
147
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Use proper name for incoming argument.
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diff
changeset
|
385 |
/** Select best direction for next step. */ |
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diff
changeset
|
386 |
ai.expectimax.prototype.analyse = function(brd2d) { |
139
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Make fast board cache.
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diff
changeset
|
387 |
this.brdCache = new ai.brdCache(); |
160
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Rename brdEngine to brd.
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diff
changeset
|
388 |
var origBrd = new this.brd(brd2d); |
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Rename brdEngine to brd.
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diff
changeset
|
389 |
var nextBrd = new this.brd(); |
125
fa1f44d3888d
Remove comparing with next board weight if expected value differ less then threshold.
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diff
changeset
|
390 |
var maxW = -1; |
21
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Expectimax implementation.
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parents:
20
diff
changeset
|
391 |
var bestDir; |
ed0292f0c7c6
Expectimax implementation.
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parents:
20
diff
changeset
|
392 |
this.cleanup(); |
126
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Increase depth limit.
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diff
changeset
|
393 |
this.depthLimit = this.cfg.depth; |
148
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Refactoring: take proper name for function.
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diff
changeset
|
394 |
var freeCnt = origBrd.freeCnt(); |
93c122e0ea90
Refactoring: take proper name for function.
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parents:
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diff
changeset
|
395 |
if (freeCnt >= 6) |
93c122e0ea90
Refactoring: take proper name for function.
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147
diff
changeset
|
396 |
this.depthLimit = Math.min(this.depthLimit, 6 - freeCnt/3); |
21
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Expectimax implementation.
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parents:
20
diff
changeset
|
397 |
for (var i = 0; i < ai.dirs.length; i++) { |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
398 |
var dir = ai.dirs[i]; |
ed0292f0c7c6
Expectimax implementation.
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parents:
20
diff
changeset
|
399 |
if (origBrd[dir](nextBrd)) { |
125
fa1f44d3888d
Remove comparing with next board weight if expected value differ less then threshold.
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124
diff
changeset
|
400 |
var w = this.evalFn(nextBrd, 1); |
fa1f44d3888d
Remove comparing with next board weight if expected value differ less then threshold.
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parents:
124
diff
changeset
|
401 |
if (w > maxW) { |
fa1f44d3888d
Remove comparing with next board weight if expected value differ less then threshold.
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parents:
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diff
changeset
|
402 |
maxW = w; |
21
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Expectimax implementation.
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parents:
20
diff
changeset
|
403 |
bestDir = dir; |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
404 |
} |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
405 |
} |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
406 |
} |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
407 |
this.cleanup(); |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
408 |
return bestDir; |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
409 |
} |
109 | 410 |
ai.expectimax.prototype.evalFn = function(brd, depth) { |
126
e634761d0432
Increase depth limit.
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parents:
125
diff
changeset
|
411 |
if (depth >= this.depthLimit) |
74
93cb48b73b39
Enable config for expectimax. Fix weight function for expectimax.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
60
diff
changeset
|
412 |
return this.weight(brd); |
139
4dde63ac0bb4
Make fast board cache.
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parents:
136
diff
changeset
|
413 |
var wCached = this.brdCache.get(brd); |
4dde63ac0bb4
Make fast board cache.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
136
diff
changeset
|
414 |
if (wCached) |
4dde63ac0bb4
Make fast board cache.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
136
diff
changeset
|
415 |
return wCached; |
124
4a2551dd179d
Fix: expectimax select best move which lead to less danger among all worst.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
122
diff
changeset
|
416 |
var wMin = +Infinity; |
160
93c44d730198
Rename brdEngine to brd.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
156
diff
changeset
|
417 |
var randBoard = new this.brd(); |
93c44d730198
Rename brdEngine to brd.
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parents:
156
diff
changeset
|
418 |
var nextBrd = new this.brd(); |
21
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Expectimax implementation.
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parents:
20
diff
changeset
|
419 |
for (var i = 0; i < 3; i++) { |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
420 |
for (var j = 0; j < 3; j++) { |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
421 |
if (brd.get(i, j) === 0) { |
140
438fd8c3c3ca
Create object outside of loop.
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139
diff
changeset
|
422 |
brd.copy(randBoard); |
21
ed0292f0c7c6
Expectimax implementation.
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parents:
20
diff
changeset
|
423 |
randBoard.set(i, j, 1); |
124
4a2551dd179d
Fix: expectimax select best move which lead to less danger among all worst.
Oleksandr Gavenko <gavenkoa@gmail.com>
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122
diff
changeset
|
424 |
var wMax2 = 0; |
21
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
425 |
for (var diri = 0; diri < ai.dirs.length; diri++) { |
124
4a2551dd179d
Fix: expectimax select best move which lead to less danger among all worst.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
122
diff
changeset
|
426 |
if (randBoard[ai.dirs[diri]](nextBrd)) |
4a2551dd179d
Fix: expectimax select best move which lead to less danger among all worst.
Oleksandr Gavenko <gavenkoa@gmail.com>
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122
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changeset
|
427 |
wMax2 = Math.max(wMax2, this.evalFn(nextBrd, depth+1)); |
21
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
428 |
} |
124
4a2551dd179d
Fix: expectimax select best move which lead to less danger among all worst.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
122
diff
changeset
|
429 |
var wMax4 = 0; |
136
4a143572b9d2
Fix: wrong variable scope.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
135
diff
changeset
|
430 |
var balance = this.cfg.balance; |
4a143572b9d2
Fix: wrong variable scope.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
135
diff
changeset
|
431 |
if (balance < 1) { |
74
93cb48b73b39
Enable config for expectimax. Fix weight function for expectimax.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
60
diff
changeset
|
432 |
randBoard.set(i, j, 2); |
93cb48b73b39
Enable config for expectimax. Fix weight function for expectimax.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
60
diff
changeset
|
433 |
for (var diri = 0; diri < ai.dirs.length; diri++) { |
124
4a2551dd179d
Fix: expectimax select best move which lead to less danger among all worst.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
122
diff
changeset
|
434 |
if (randBoard[ai.dirs[diri]](nextBrd)) |
4a2551dd179d
Fix: expectimax select best move which lead to less danger among all worst.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
122
diff
changeset
|
435 |
wMax4 = Math.max(wMax4, this.evalFn(nextBrd, depth+1)); |
21
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
436 |
} |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
437 |
} |
124
4a2551dd179d
Fix: expectimax select best move which lead to less danger among all worst.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
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diff
changeset
|
438 |
wMin = Math.min(wMin, balance * wMax2 + (1 - balance) * wMax4); |
21
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
439 |
} |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
440 |
} |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
441 |
} |
139
4dde63ac0bb4
Make fast board cache.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
136
diff
changeset
|
442 |
this.brdCache.put(brd, wMin); |
124
4a2551dd179d
Fix: expectimax select best move which lead to less danger among all worst.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
122
diff
changeset
|
443 |
return wMin; |
21
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
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20
diff
changeset
|
444 |
} |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
445 |
/* Mark that next board will be unrelated to previous, so any stored precompution can be cleared. */ |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
446 |
ai.expectimax.prototype.cleanup = function() { |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
447 |
} |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
448 |
|
155
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changeset
|
449 |
|
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changeset
|
450 |
|
1f8df90bd338
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changeset
|
451 |
//////////////////////////////////////////////////////////////// |
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changeset
|
452 |
// Survive as long as possible. |
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changeset
|
453 |
//////////////////////////////////////////////////////////////// |
1f8df90bd338
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diff
changeset
|
454 |
|
1f8df90bd338
AI: Survive as long as possible.
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changeset
|
455 |
/** |
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|
456 |
* Defines coefficient for linear resulted weight function. |
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152
diff
changeset
|
457 |
* @name ai.survive.cfg |
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changeset
|
458 |
* @namespace |
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|
459 |
* @property {number} scoreCoef multiplicator for score |
1f8df90bd338
AI: Survive as long as possible.
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changeset
|
460 |
* @property {number} maxValCoef multiplicator for max value |
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changeset
|
461 |
* @property {number} cornerBonus bonus for max value at board corner |
1f8df90bd338
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changeset
|
462 |
* @property {number} edgeBonus bonus for max value at board edge |
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AI: Survive as long as possible.
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changeset
|
463 |
* @property {number} freeBonus bonus for each free cell |
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changeset
|
464 |
*/ |
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parents:
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diff
changeset
|
465 |
|
1f8df90bd338
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diff
changeset
|
466 |
/** N level deep with random simulation. |
160
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Rename brdEngine to brd.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
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diff
changeset
|
467 |
* @param {Board} brd board engine from board.js |
155
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changeset
|
468 |
* @param {ai.survive.cfg} cfg configuration settings |
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changeset
|
469 |
* @constructor */ |
160
93c44d730198
Rename brdEngine to brd.
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|
470 |
ai.survive = function(brd, cfg) { |
93c44d730198
Rename brdEngine to brd.
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changeset
|
471 |
this.brd = brd; |
155
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diff
changeset
|
472 |
this.cfg = ai.copyObj(ai.survive.bestCfg); |
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AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
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changeset
|
473 |
ai.copyObj(cfg, this.cfg); |
1f8df90bd338
AI: Survive as long as possible.
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parents:
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changeset
|
474 |
if (this.cfg.freeCells <= 0) |
1f8df90bd338
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diff
changeset
|
475 |
this.cfg.freeCells = ai.survive.bestCfg.freeCells; |
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AI: Survive as long as possible.
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parents:
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changeset
|
476 |
if (!this.cfg.maxDepth || this.cfg.maxDepth < 0 || 20 <= this.cfg.maxDepth) |
1f8df90bd338
AI: Survive as long as possible.
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diff
changeset
|
477 |
this.cfg.maxDepth = ai.survive.bestCfg.maxDepth; |
160
93c44d730198
Rename brdEngine to brd.
Oleksandr Gavenko <gavenkoa@gmail.com>
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diff
changeset
|
478 |
this.cfg.altAI = new ai.StaticDeepMerges(brd, ai.survive.altAICfg); |
155
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parents:
152
diff
changeset
|
479 |
} |
1f8df90bd338
AI: Survive as long as possible.
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changeset
|
480 |
ai.survive.bestCfg = {freeCells: 8, maxDepth: 5}; |
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AI: Survive as long as possible.
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changeset
|
481 |
ai.survive.altAICfg = {scoreCoef: 1, maxValCoef: 0, cornerBonus: 0, edgeBonus: 0, freeBonus: 0, weightThreshold: 0}; |
1f8df90bd338
AI: Survive as long as possible.
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parents:
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diff
changeset
|
482 |
/** Select best direction for next step. */ |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
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diff
changeset
|
483 |
ai.survive.prototype.analyse = function(brd2d) { |
160
93c44d730198
Rename brdEngine to brd.
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parents:
156
diff
changeset
|
484 |
var origBrd = new this.brd(brd2d); |
93c44d730198
Rename brdEngine to brd.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
156
diff
changeset
|
485 |
var nextBrd = new this.brd(); |
156
e6a4bc888b72
Allow IA choose any direction in case when all move lead to game over.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
155
diff
changeset
|
486 |
var bestW = -2; |
155
1f8df90bd338
AI: Survive as long as possible.
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parents:
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diff
changeset
|
487 |
var bestDir; |
1f8df90bd338
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parents:
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diff
changeset
|
488 |
var freeCnt = origBrd.freeCnt(); |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
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diff
changeset
|
489 |
if (freeCnt >= this.cfg.freeCells) |
1f8df90bd338
AI: Survive as long as possible.
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parents:
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diff
changeset
|
490 |
return this.cfg.altAI.analyse(brd2d); |
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AI: Survive as long as possible.
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parents:
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diff
changeset
|
491 |
for (var i = 0; i < ai.dirs.length; i++) { |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
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diff
changeset
|
492 |
var dir = ai.dirs[i]; |
1f8df90bd338
AI: Survive as long as possible.
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parents:
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diff
changeset
|
493 |
if (origBrd[dir](nextBrd)) { |
1f8df90bd338
AI: Survive as long as possible.
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parents:
152
diff
changeset
|
494 |
var w = this.evalFn(nextBrd, 1); |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
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diff
changeset
|
495 |
if (w > bestW) { |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
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diff
changeset
|
496 |
bestW = w; |
1f8df90bd338
AI: Survive as long as possible.
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parents:
152
diff
changeset
|
497 |
bestDir = dir; |
1f8df90bd338
AI: Survive as long as possible.
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parents:
152
diff
changeset
|
498 |
} |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
499 |
} |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
500 |
} |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
501 |
return bestDir; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
502 |
} |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
503 |
ai.survive.prototype.evalFn = function(brd, depth) { |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
504 |
if (brd.freeCnt() >= this.cfg.freeCells) |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
505 |
return 1; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
506 |
if (depth >= this.cfg.maxDepth) |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
507 |
return 0; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
508 |
var wMin = +Infinity; |
160
93c44d730198
Rename brdEngine to brd.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
156
diff
changeset
|
509 |
var randBoard = new this.brd(); |
93c44d730198
Rename brdEngine to brd.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
156
diff
changeset
|
510 |
var nextBrd = new this.brd(); |
155
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
511 |
exit: |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
512 |
for (var i = 0; i < 3; i++) { |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
513 |
for (var j = 0; j < 3; j++) { |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
514 |
if (brd.get(i, j) !== 0) |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
515 |
continue; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
516 |
brd.copy(randBoard); |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
517 |
randBoard.set(i, j, 1); |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
518 |
var wMax = -1; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
519 |
for (var diri = 0; diri < ai.dirs.length; diri++) { |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
520 |
if (randBoard[ai.dirs[diri]](nextBrd)) { |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
521 |
var w = this.evalFn(nextBrd, depth+1); |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
522 |
if (w === 1) { |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
523 |
wMax = 1; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
524 |
break; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
525 |
} |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
526 |
wMax = Math.max(wMax, w); |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
527 |
} |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
528 |
} |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
529 |
if (wMax === -1) { |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
530 |
wMin = -1; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
531 |
break exit; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
532 |
} |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
533 |
wMin = Math.min(wMin, wMax); |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
534 |
} |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
535 |
} |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
536 |
if (wMin === +Infinity) |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
537 |
return -1; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
538 |
return wMin; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
539 |
} |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
540 |
/* Mark that next board will be unrelated to previous, so any stored precompution can be cleared. */ |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
541 |
ai.survive.prototype.cleanup = function() { |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
542 |
} |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
543 |
|
163
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
544 |
|
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
545 |
|
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
546 |
//////////////////////////////////////////////////////////////// |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
547 |
// MonteCarlo simulations. |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
548 |
//////////////////////////////////////////////////////////////// |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
549 |
|
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
550 |
/** |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
551 |
* Defines coefficient for linear resulted weight function. |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
552 |
* @name ai.MonteCarlo.cfg |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
553 |
* @namespace |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
554 |
* @property {number} maxDepth depth limit |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
555 |
* @property {number} simulations simulation count limit |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
556 |
*/ |
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|
557 |
|
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Basic Monte Carlo AI.
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parents:
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|
558 |
/** MonteCarlo simulations. |
87479ae56889
Basic Monte Carlo AI.
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parents:
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|
559 |
* @param {Board} brd board engine from board.js |
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Basic Monte Carlo AI.
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parents:
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diff
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|
560 |
* @param {ai.MonteCarlo.cfg} cfg configuration settings |
87479ae56889
Basic Monte Carlo AI.
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parents:
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|
561 |
* @constructor */ |
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Basic Monte Carlo AI.
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parents:
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|
562 |
ai.MonteCarlo = function(brd, cfg) { |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
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|
563 |
this.brd = brd; |
87479ae56889
Basic Monte Carlo AI.
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parents:
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|
564 |
this.cfg = ai.copyObj(ai.MonteCarlo.bestCfg); |
87479ae56889
Basic Monte Carlo AI.
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parents:
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changeset
|
565 |
ai.copyObj(cfg, this.cfg); |
87479ae56889
Basic Monte Carlo AI.
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parents:
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changeset
|
566 |
if (this.cfg.simulations <= 0) |
87479ae56889
Basic Monte Carlo AI.
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parents:
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changeset
|
567 |
this.cfg.simulations = ai.MonteCarlo.bestCfg.simulations; |
87479ae56889
Basic Monte Carlo AI.
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parents:
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changeset
|
568 |
if (!this.cfg.maxDepth || this.cfg.maxDepth <= 0 || 20 <= this.cfg.maxDepth) |
87479ae56889
Basic Monte Carlo AI.
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parents:
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changeset
|
569 |
this.cfg.maxDepth = ai.MonteCarlo.bestCfg.maxDepth; |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
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diff
changeset
|
570 |
} |
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|
571 |
ai.MonteCarlo.bestCfg = {simulations: 1000, maxDepth: 20, cornerBonus: 0, edgeBonus: 0, freeBonus: 0}; |
163
87479ae56889
Basic Monte Carlo AI.
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parents:
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diff
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|
572 |
/** Select best direction for next step. */ |
87479ae56889
Basic Monte Carlo AI.
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parents:
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changeset
|
573 |
ai.MonteCarlo.prototype.analyse = function(brd2d) { |
87479ae56889
Basic Monte Carlo AI.
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parents:
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|
574 |
var origBrd = new this.brd(brd2d); |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
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changeset
|
575 |
var nextBrd = new this.brd(); |
87479ae56889
Basic Monte Carlo AI.
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parents:
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changeset
|
576 |
var bestW = - this.cfg.simulations; |
87479ae56889
Basic Monte Carlo AI.
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parents:
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diff
changeset
|
577 |
var bestDir; |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
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diff
changeset
|
578 |
var freeCnt = origBrd.freeCnt(); |
87479ae56889
Basic Monte Carlo AI.
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parents:
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diff
changeset
|
579 |
for (var i = 0; i < ai.dirs.length; i++) { |
87479ae56889
Basic Monte Carlo AI.
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parents:
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changeset
|
580 |
var dir = ai.dirs[i]; |
87479ae56889
Basic Monte Carlo AI.
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parents:
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diff
changeset
|
581 |
if (origBrd[dir](nextBrd)) { |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
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diff
changeset
|
582 |
var w = 0; |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
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diff
changeset
|
583 |
for (var gameCnt = this.cfg.simulations; gameCnt > 0; gameCnt--) { |
87479ae56889
Basic Monte Carlo AI.
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parents:
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changeset
|
584 |
var tmpBrd = nextBrd.copy(); |
87479ae56889
Basic Monte Carlo AI.
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parents:
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changeset
|
585 |
w += this.play(tmpBrd, this.cfg.maxDepth); |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
586 |
} |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
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diff
changeset
|
587 |
if (w > bestW) { |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
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diff
changeset
|
588 |
bestW = w; |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
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diff
changeset
|
589 |
bestDir = dir; |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
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diff
changeset
|
590 |
} |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
591 |
} |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
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diff
changeset
|
592 |
} |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
593 |
return bestDir; |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
594 |
} |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
595 |
ai.MonteCarlo.prototype.play = function(brd, depth) { |
87479ae56889
Basic Monte Carlo AI.
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parents:
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diff
changeset
|
596 |
if (depth <= 0) { |
164
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parents:
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diff
changeset
|
597 |
return this.evalFn(brd); |
163
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Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
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diff
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|
598 |
} |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
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diff
changeset
|
599 |
brd.rnd(1); |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
600 |
var dirs = ai.randDirs(); |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
601 |
for (var i = 0; i < 4; i++) { |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
602 |
var dir = dirs[i]; |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
603 |
var nextBrd = new brd.constructor(); |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
604 |
if (brd[dir](nextBrd)) { |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
605 |
return this.play(nextBrd, depth-1); |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
606 |
} |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
607 |
} |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
608 |
return -1; |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
609 |
} |
164
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|
610 |
ai.MonteCarlo.prototype.evalFn = function(brd) { |
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parents:
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diff
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|
611 |
var w = 0; |
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Add more options to Monte Carlo heuristics.
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diff
changeset
|
612 |
if (this.cfg.freeBonus > 0) |
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parents:
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diff
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|
613 |
w += this.cfg.freeBonus * brd.freeCnt(); |
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parents:
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|
614 |
var max = brd.maxVal(); |
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parents:
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diff
changeset
|
615 |
if (max > 7) { |
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parents:
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diff
changeset
|
616 |
if (this.cfg.cornerBonus > 0 && brd.atCorner(max)) |
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|
617 |
w += this.cfg.cornerBonus; |
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changeset
|
618 |
if (this.cfg.edgeBonus > 0 && brd.atEdge(max)) |
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|
619 |
w += this.cfg.edgeBonus; |
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|
620 |
} |
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|
621 |
return w; |
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parents:
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diff
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|
622 |
} |
163
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Basic Monte Carlo AI.
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parents:
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diff
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|
623 |
/* Mark that next board will be unrelated to previous, so any stored precompution can be cleared. */ |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
624 |
ai.MonteCarlo.prototype.cleanup = function() { |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
625 |
} |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
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diff
changeset
|
626 |