author | Oleksandr Gavenko <gavenkoa@gmail.com> |
Sun, 07 Aug 2016 23:23:15 +0300 | |
changeset 188 | 754796e567ab |
parent 172 | 021cd45cb5ef |
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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// Always up AI. |
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//////////////////////////////////////////////////////////////// |
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/** Always up AI. |
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* @param {Board} brd board engine from board.js |
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* @constructor */ |
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ai.AlwaysUp = 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.AlwaysUp.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 tmpBrd = new this.brd(); |
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if (origBrd.canUp()) |
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return "up"; |
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var canRight = origBrd.right(nextBrd); |
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if (canRight) { |
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var canRightUp = nextBrd.up(tmpBrd); |
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var rightScore = tmpBrd.score(); |
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} |
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var canLeft = origBrd.left(nextBrd); |
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if (canLeft) { |
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var canLeftUp = nextBrd.up(tmpBrd); |
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var leftScore = tmpBrd.score(); |
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} |
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if (canRight && canLeft) { |
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if (canRightUp && canLeftUp) |
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return (rightScore > leftScore) ? "right": "left"; |
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else if (canRightUp) |
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return "right"; |
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else |
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return "left"; |
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} else if (canRight) |
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return "right"; |
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else if (canLeft) |
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return "left"; |
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return "down"; |
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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.AlwaysUp.prototype.cleanup = function() { } |
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|
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|
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//////////////////////////////////////////////////////////////// |
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// Blind weight random AI. |
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//////////////////////////////////////////////////////////////// |
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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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147 |
/** 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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172 |
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. */ |
59 | 179 |
ai.BlindWeightRandom.prototype.cleanup = function() { } |
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|
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|
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183 |
//////////////////////////////////////////////////////////////// |
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184 |
// Blind cycle AI. |
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185 |
//////////////////////////////////////////////////////////////// |
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186 |
|
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187 |
/** |
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188 |
* @name ai.BlindCycle.cfg |
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189 |
* @namespace |
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* @property {boolean} whilePossible move in one direction while possible |
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191 |
* @property {boolean} down switch direction clockwise |
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192 |
*/ |
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193 |
|
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194 |
/** Blind cycle AI. |
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195 |
* @param {Board} brd board engine from board.js |
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196 |
* @param {ai.BlindCycle.cfg} cfg configuration settings |
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197 |
* @constructor */ |
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ai.BlindCycle = function(brd, cfg) { |
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199 |
this.brd = brd; |
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this.cfg = cfg || {}; |
29 | 201 |
this.cfg.whilePossible = this.cfg.whilePossible || false; |
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202 |
this.cfg.clockwise = this.cfg.clockwise || false; |
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203 |
} |
59 | 204 |
ai.BlindCycle.dirs = ["left", "down", "right", "up"]; |
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ai.BlindCycle.canFn = ["canLeft", "canDown", "canRight", "canUp"]; |
59 | 206 |
ai.BlindCycle.prototype.nextDir = function(dir) { |
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207 |
if (this.cfg.clockwise) |
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208 |
return (dir + (4-1)) % 4; |
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209 |
else |
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210 |
return (dir + 1) % 4; |
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211 |
} |
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212 |
/** Select best direction for next step. */ |
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213 |
ai.BlindCycle.prototype.analyse = function(brd2d) { |
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214 |
var origBrd = new this.brd(brd2d); |
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215 |
this.prevDir = this.prevDir || 0; |
29 | 216 |
if (!this.cfg.whilePossible) |
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217 |
this.prevDir = this.nextDir(this.prevDir); |
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218 |
while (true) { |
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219 |
if (origBrd[ai.BlindCycle.canFn[this.prevDir]]()) |
59 | 220 |
return ai.BlindCycle.dirs[this.prevDir]; |
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221 |
this.prevDir = this.nextDir(this.prevDir); |
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222 |
} |
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223 |
} |
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224 |
/* Mark that next board will be unrelated to previous, so any stored precompution can be cleared. */ |
59 | 225 |
ai.BlindCycle.prototype.cleanup = function() { |
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226 |
delete this.prevDir; |
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227 |
} |
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|
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|
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|
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//////////////////////////////////////////////////////////////// |
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232 |
// 1 step deep with linear utility function on score, max value, |
53
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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 utility function. |
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* @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 |
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* @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; |
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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.OneStepAhead.bestCfg = {scoreCoef: 1, maxValCoef: 0, cornerBonus: 0, edgeBonus: 0, freeBonus: 0}; |
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ai.OneStepAhead.prototype.utility = function(brd) { |
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var utility = 0; |
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if (this.cfg.scoreCoef > 0) |
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utility += 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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utility += this.cfg.maxValCoef * max; |
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if (this.cfg.cornerBonus > 0 && brd.atCorner(max)) |
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utility += this.cfg.cornerBonus; |
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if (this.cfg.edgeBonus > 0 && brd.atEdge(max)) |
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utility += this.cfg.edgeBonus; |
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if (this.cfg.freeBonus > 0) |
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utility += this.cfg.freeBonus * brd.freeCnt(); |
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return utility; |
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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 maxUtility = -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 utility = this.utility(nextBrd); |
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if (maxUtility < utility) { |
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bestDir = dir; |
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maxUtility = utility; |
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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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|
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|
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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 utility 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, utilityThreshold: 10}; |
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ai.StaticDeepMerges.prototype.utility = function(brd) { |
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var utility = 0; |
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if (this.cfg.scoreCoef > 0) |
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utility += 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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utility += this.cfg.maxValCoef * max; |
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if (this.cfg.cornerBonus > 0 && brd.atCorner(max)) |
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utility += this.cfg.cornerBonus; |
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if (this.cfg.edgeBonus > 0 && brd.atEdge(max)) |
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utility += this.cfg.edgeBonus; |
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if (this.cfg.freeBonus > 0) |
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utility += this.cfg.freeBonus * brd.freeCnt(); |
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return utility; |
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} |
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/** 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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|
339 |
var nextBrd = new this.brd(); |
18
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|
340 |
var prevScore = -1, nextScore = -1; |
167
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changeset
|
341 |
var maxUtility = -1; |
18
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|
342 |
var bestDir; |
19
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changeset
|
343 |
for (var i = 0; i < ai.dirs.length; i++) { |
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changeset
|
344 |
var dir = ai.dirs[i]; |
18
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changeset
|
345 |
if (origBrd[dir](nextBrd)) { |
167
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|
346 |
var utility = this.evalFn(nextBrd); |
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|
347 |
var ok = (utility - maxUtility) > this.cfg.utilityThreshold; |
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changeset
|
348 |
if ( ! ok && maxUtility <= utility) { |
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|
349 |
nextScore = this.utility(nextBrd); |
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|
350 |
ok = prevScore < nextScore; |
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changeset
|
351 |
} |
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changeset
|
352 |
if (ok) { |
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changeset
|
353 |
prevScore = nextScore; |
167
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changeset
|
354 |
maxUtility = utility; |
18
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changeset
|
355 |
bestDir = dir; |
42d62e5123b2
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changeset
|
356 |
} |
14
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changeset
|
357 |
} |
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changeset
|
358 |
} |
18
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changeset
|
359 |
return bestDir; |
14
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changeset
|
360 |
} |
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changeset
|
361 |
ai.StaticDeepMerges.prototype.evalFn = function(brd) { |
18
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changeset
|
362 |
var currScore = brd.score(); |
167
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|
363 |
var maxUtility = currScore; |
168
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|
364 |
var nextBrd = new this.brd(); |
19
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changeset
|
365 |
for (var i = 0; i < ai.dirs.length; i++) { |
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changeset
|
366 |
if (brd[ai.dirs[i]](nextBrd)) { |
18
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changeset
|
367 |
var score = nextBrd.score(); |
42d62e5123b2
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changeset
|
368 |
if (score > currScore) |
167
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|
369 |
maxUtility = Math.max(maxUtility, this.evalFn(nextBrd)); |
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changeset
|
370 |
} |
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changeset
|
371 |
} |
167
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|
372 |
return maxUtility; |
14
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changeset
|
373 |
} |
19
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changeset
|
374 |
/* Mark that next board will be unrelated to previous, so any stored precompution can be cleared. */ |
110
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|
375 |
ai.StaticDeepMerges.prototype.cleanup = function() { } |
14
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changeset
|
376 |
|
24
079bcd734b68
Fix: TypeError: ui.ai.current.cleanup is not a function
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diff
changeset
|
377 |
|
20
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Add detecting value at edge or corner, free cell count. Added AI that count
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diff
changeset
|
378 |
|
ab294e8db00c
Add detecting value at edge or corner, free cell count. Added AI that count
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diff
changeset
|
379 |
//////////////////////////////////////////////////////////////// |
21
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Expectimax implementation.
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diff
changeset
|
380 |
// N level deep with random simulation. |
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changeset
|
381 |
//////////////////////////////////////////////////////////////// |
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diff
changeset
|
382 |
|
57
94e1b2d0bd31
Add JSDoc annotation.
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diff
changeset
|
383 |
/** |
167
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changeset
|
384 |
* Defines coefficient for linear resulted utility function. |
57
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diff
changeset
|
385 |
* @name ai.expectimax.cfg |
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diff
changeset
|
386 |
* @namespace |
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diff
changeset
|
387 |
* @property {number} scoreCoef multiplicator for score |
94e1b2d0bd31
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diff
changeset
|
388 |
* @property {number} maxValCoef multiplicator for max value |
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diff
changeset
|
389 |
* @property {number} cornerBonus bonus for max value at board corner |
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diff
changeset
|
390 |
* @property {number} edgeBonus bonus for max value at board edge |
110
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changeset
|
391 |
* @property {number} freeBonus bonus for each free cell |
57
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diff
changeset
|
392 |
*/ |
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56
diff
changeset
|
393 |
|
94e1b2d0bd31
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diff
changeset
|
394 |
/** N level deep with random simulation. |
168
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changeset
|
395 |
* @param {Board} brd board engine from board.js |
57
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diff
changeset
|
396 |
* @param {ai.expectimax.cfg} cfg configuration settings |
94e1b2d0bd31
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changeset
|
397 |
* @constructor */ |
168
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Refactoring: rename "brdEngine" to "brd".
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changeset
|
398 |
ai.expectimax = function(brd, cfg) { |
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Refactoring: rename "brdEngine" to "brd".
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diff
changeset
|
399 |
this.brd = brd; |
74
93cb48b73b39
Enable config for expectimax. Fix weight function for expectimax.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
60
diff
changeset
|
400 |
this.cfg = ai.copyObj(ai.expectimax.bestCfg); |
93cb48b73b39
Enable config for expectimax. Fix weight function for expectimax.
Oleksandr Gavenko <gavenkoa@gmail.com>
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diff
changeset
|
401 |
ai.copyObj(cfg, this.cfg); |
93cb48b73b39
Enable config for expectimax. Fix weight function for expectimax.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
60
diff
changeset
|
402 |
if (this.cfg.balance <= 0) |
93cb48b73b39
Enable config for expectimax. Fix weight function for expectimax.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
60
diff
changeset
|
403 |
this.cfg.balance = ai.expectimax.bestCfg.balance; |
93cb48b73b39
Enable config for expectimax. Fix weight function for expectimax.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
60
diff
changeset
|
404 |
if ( this.cfg.balance > 1) |
93cb48b73b39
Enable config for expectimax. Fix weight function for expectimax.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
60
diff
changeset
|
405 |
this.cfg.balance = 1; |
126
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Increase depth limit.
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diff
changeset
|
406 |
if (!this.cfg.depth || this.cfg.depth < 0 || 9 <= this.cfg.depth) |
74
93cb48b73b39
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diff
changeset
|
407 |
this.cfg.depth = ai.expectimax.bestCfg.depth; |
21
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Expectimax implementation.
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diff
changeset
|
408 |
} |
126
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Increase depth limit.
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changeset
|
409 |
ai.expectimax.bestCfg = {balance: .9, depth: 5, scoreCoef: 1, maxValCoef: 0, cornerBonus: 0, edgeBonus: 0, freeBonus: 0}; |
167
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Refactoring: rename "weight" to "utility".
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156
diff
changeset
|
410 |
ai.expectimax.prototype.utility = function(brd) { |
74
93cb48b73b39
Enable config for expectimax. Fix weight function for expectimax.
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diff
changeset
|
411 |
var score = 0; |
122
4cc40a51742a
Don't calculate max value if it isn't used.
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diff
changeset
|
412 |
var cfg = this.cfg; |
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Don't calculate max value if it isn't used.
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diff
changeset
|
413 |
if (cfg.scoreCoef > 0) |
4cc40a51742a
Don't calculate max value if it isn't used.
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diff
changeset
|
414 |
score += cfg.scoreCoef * brd.score(); |
4cc40a51742a
Don't calculate max value if it isn't used.
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diff
changeset
|
415 |
if (cfg.maxValCoef > 0 || cfg.cornerBonus > 0 || cfg.edgeBonus > 0) { |
149
2839f8227a38
Refactoring: take proper name to function.
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148
diff
changeset
|
416 |
var max = brd.maxVal(); |
122
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diff
changeset
|
417 |
if (cfg.maxValCoef > 0) |
4cc40a51742a
Don't calculate max value if it isn't used.
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diff
changeset
|
418 |
score += cfg.maxValCoef * max; |
4cc40a51742a
Don't calculate max value if it isn't used.
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diff
changeset
|
419 |
if (cfg.cornerBonus > 0) |
4cc40a51742a
Don't calculate max value if it isn't used.
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118
diff
changeset
|
420 |
if (brd.atCorner(max)) |
4cc40a51742a
Don't calculate max value if it isn't used.
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118
diff
changeset
|
421 |
score += cfg.cornerBonus; |
4cc40a51742a
Don't calculate max value if it isn't used.
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118
diff
changeset
|
422 |
if (cfg.edgeBonus > 0) |
4cc40a51742a
Don't calculate max value if it isn't used.
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118
diff
changeset
|
423 |
if (brd.atEdge(max)) |
4cc40a51742a
Don't calculate max value if it isn't used.
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118
diff
changeset
|
424 |
score += cfg.edgeBonus; |
4cc40a51742a
Don't calculate max value if it isn't used.
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118
diff
changeset
|
425 |
} |
135
935a500cea3b
Fix: code in wrong scope.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
126
diff
changeset
|
426 |
if (cfg.freeBonus > 0) |
148
93c122e0ea90
Refactoring: take proper name for function.
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147
diff
changeset
|
427 |
score += cfg.freeBonus * brd.freeCnt(); |
21
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
428 |
return score; |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
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20
diff
changeset
|
429 |
} |
147
d4f9433e30b9
Use proper name for incoming argument.
Oleksandr Gavenko <gavenkoa@gmail.com>
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140
diff
changeset
|
430 |
/** Select best direction for next step. */ |
d4f9433e30b9
Use proper name for incoming argument.
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140
diff
changeset
|
431 |
ai.expectimax.prototype.analyse = function(brd2d) { |
139
4dde63ac0bb4
Make fast board cache.
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136
diff
changeset
|
432 |
this.brdCache = new ai.brdCache(); |
168
df8e645c3f36
Refactoring: rename "brdEngine" to "brd".
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diff
changeset
|
433 |
var origBrd = new this.brd(brd2d); |
df8e645c3f36
Refactoring: rename "brdEngine" to "brd".
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diff
changeset
|
434 |
var nextBrd = new this.brd(); |
125
fa1f44d3888d
Remove comparing with next board weight if expected value differ less then threshold.
Oleksandr Gavenko <gavenkoa@gmail.com>
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diff
changeset
|
435 |
var maxW = -1; |
21
ed0292f0c7c6
Expectimax implementation.
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parents:
20
diff
changeset
|
436 |
var bestDir; |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
437 |
this.cleanup(); |
126
e634761d0432
Increase depth limit.
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125
diff
changeset
|
438 |
this.depthLimit = this.cfg.depth; |
148
93c122e0ea90
Refactoring: take proper name for function.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
147
diff
changeset
|
439 |
var freeCnt = origBrd.freeCnt(); |
93c122e0ea90
Refactoring: take proper name for function.
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147
diff
changeset
|
440 |
if (freeCnt >= 6) |
93c122e0ea90
Refactoring: take proper name for function.
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147
diff
changeset
|
441 |
this.depthLimit = Math.min(this.depthLimit, 6 - freeCnt/3); |
21
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
442 |
for (var i = 0; i < ai.dirs.length; i++) { |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
443 |
var dir = ai.dirs[i]; |
ed0292f0c7c6
Expectimax implementation.
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20
diff
changeset
|
444 |
if (origBrd[dir](nextBrd)) { |
125
fa1f44d3888d
Remove comparing with next board weight if expected value differ less then threshold.
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diff
changeset
|
445 |
var w = this.evalFn(nextBrd, 1); |
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Remove comparing with next board weight if expected value differ less then threshold.
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changeset
|
446 |
if (w > maxW) { |
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Remove comparing with next board weight if expected value differ less then threshold.
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changeset
|
447 |
maxW = w; |
21
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Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
448 |
bestDir = dir; |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
449 |
} |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
450 |
} |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
451 |
} |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
452 |
this.cleanup(); |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
453 |
return bestDir; |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
454 |
} |
109 | 455 |
ai.expectimax.prototype.evalFn = function(brd, depth) { |
126
e634761d0432
Increase depth limit.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
125
diff
changeset
|
456 |
if (depth >= this.depthLimit) |
167
ae123e309e31
Refactoring: rename "weight" to "utility".
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parents:
156
diff
changeset
|
457 |
return this.utility(brd); |
139
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Make fast board cache.
Oleksandr Gavenko <gavenkoa@gmail.com>
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136
diff
changeset
|
458 |
var wCached = this.brdCache.get(brd); |
4dde63ac0bb4
Make fast board cache.
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diff
changeset
|
459 |
if (wCached) |
4dde63ac0bb4
Make fast board cache.
Oleksandr Gavenko <gavenkoa@gmail.com>
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changeset
|
460 |
return wCached; |
124
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Fix: expectimax select best move which lead to less danger among all worst.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
122
diff
changeset
|
461 |
var wMin = +Infinity; |
168
df8e645c3f36
Refactoring: rename "brdEngine" to "brd".
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
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diff
changeset
|
462 |
var randBoard = new this.brd(); |
df8e645c3f36
Refactoring: rename "brdEngine" to "brd".
Oleksandr Gavenko <gavenkoa@gmail.com>
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diff
changeset
|
463 |
var nextBrd = new this.brd(); |
21
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Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
464 |
for (var i = 0; i < 3; i++) { |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
465 |
for (var j = 0; j < 3; j++) { |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
466 |
if (brd.get(i, j) === 0) { |
140
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Create object outside of loop.
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parents:
139
diff
changeset
|
467 |
brd.copy(randBoard); |
21
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
468 |
randBoard.set(i, j, 1); |
124
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Fix: expectimax select best move which lead to less danger among all worst.
Oleksandr Gavenko <gavenkoa@gmail.com>
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diff
changeset
|
469 |
var wMax2 = 0; |
21
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Expectimax implementation.
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parents:
20
diff
changeset
|
470 |
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>
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changeset
|
471 |
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
diff
changeset
|
472 |
wMax2 = Math.max(wMax2, this.evalFn(nextBrd, depth+1)); |
21
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Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
473 |
} |
124
4a2551dd179d
Fix: expectimax select best move which lead to less danger among all worst.
Oleksandr Gavenko <gavenkoa@gmail.com>
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diff
changeset
|
474 |
var wMax4 = 0; |
136
4a143572b9d2
Fix: wrong variable scope.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
135
diff
changeset
|
475 |
var balance = this.cfg.balance; |
4a143572b9d2
Fix: wrong variable scope.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
135
diff
changeset
|
476 |
if (balance < 1) { |
74
93cb48b73b39
Enable config for expectimax. Fix weight function for expectimax.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
60
diff
changeset
|
477 |
randBoard.set(i, j, 2); |
93cb48b73b39
Enable config for expectimax. Fix weight function for expectimax.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
60
diff
changeset
|
478 |
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
|
479 |
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
|
480 |
wMax4 = Math.max(wMax4, this.evalFn(nextBrd, depth+1)); |
21
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
481 |
} |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
482 |
} |
124
4a2551dd179d
Fix: expectimax select best move which lead to less danger among all worst.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
122
diff
changeset
|
483 |
wMin = Math.min(wMin, balance * wMax2 + (1 - balance) * wMax4); |
21
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
484 |
} |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
485 |
} |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
486 |
} |
139
4dde63ac0bb4
Make fast board cache.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
136
diff
changeset
|
487 |
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
|
488 |
return wMin; |
21
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
489 |
} |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
490 |
/* 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
|
491 |
ai.expectimax.prototype.cleanup = function() { |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
492 |
} |
ed0292f0c7c6
Expectimax implementation.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
20
diff
changeset
|
493 |
|
155
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
494 |
|
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
495 |
|
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
496 |
//////////////////////////////////////////////////////////////// |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
497 |
// Survive as long as possible. |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
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 |
/** |
167
ae123e309e31
Refactoring: rename "weight" to "utility".
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
156
diff
changeset
|
501 |
* Defines coefficient for linear resulted utility function. |
155
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
502 |
* @name ai.survive.cfg |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
503 |
* @namespace |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
504 |
* @property {number} scoreCoef multiplicator for score |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
505 |
* @property {number} maxValCoef multiplicator for max value |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
506 |
* @property {number} cornerBonus bonus for max value at board corner |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
507 |
* @property {number} edgeBonus bonus for max value at board edge |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
508 |
* @property {number} freeBonus bonus for each free cell |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
509 |
*/ |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
510 |
|
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
511 |
/** N level deep with random simulation. |
168
df8e645c3f36
Refactoring: rename "brdEngine" to "brd".
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
167
diff
changeset
|
512 |
* @param {Board} brd board engine from board.js |
155
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
513 |
* @param {ai.survive.cfg} cfg configuration settings |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
514 |
* @constructor */ |
168
df8e645c3f36
Refactoring: rename "brdEngine" to "brd".
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
167
diff
changeset
|
515 |
ai.survive = function(brd, cfg) { |
df8e645c3f36
Refactoring: rename "brdEngine" to "brd".
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
167
diff
changeset
|
516 |
this.brd = brd; |
155
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
517 |
this.cfg = ai.copyObj(ai.survive.bestCfg); |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
518 |
ai.copyObj(cfg, this.cfg); |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
519 |
if (this.cfg.freeCells <= 0) |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
520 |
this.cfg.freeCells = ai.survive.bestCfg.freeCells; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
521 |
if (!this.cfg.maxDepth || this.cfg.maxDepth < 0 || 20 <= this.cfg.maxDepth) |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
522 |
this.cfg.maxDepth = ai.survive.bestCfg.maxDepth; |
168
df8e645c3f36
Refactoring: rename "brdEngine" to "brd".
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
167
diff
changeset
|
523 |
this.cfg.altAI = new ai.StaticDeepMerges(brd, ai.survive.altAICfg); |
155
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
524 |
} |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
525 |
ai.survive.bestCfg = {freeCells: 8, maxDepth: 5}; |
167
ae123e309e31
Refactoring: rename "weight" to "utility".
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
156
diff
changeset
|
526 |
ai.survive.altAICfg = {scoreCoef: 1, maxValCoef: 0, cornerBonus: 0, edgeBonus: 0, freeBonus: 0, utilityThreshold: 0}; |
155
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
527 |
/** Select best direction for next step. */ |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
528 |
ai.survive.prototype.analyse = function(brd2d) { |
168
df8e645c3f36
Refactoring: rename "brdEngine" to "brd".
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
167
diff
changeset
|
529 |
var origBrd = new this.brd(brd2d); |
df8e645c3f36
Refactoring: rename "brdEngine" to "brd".
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
167
diff
changeset
|
530 |
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
|
531 |
var bestW = -2; |
155
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
532 |
var bestDir; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
533 |
var freeCnt = origBrd.freeCnt(); |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
534 |
if (freeCnt >= this.cfg.freeCells) |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
535 |
return this.cfg.altAI.analyse(brd2d); |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
536 |
for (var i = 0; i < ai.dirs.length; i++) { |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
537 |
var dir = ai.dirs[i]; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
538 |
if (origBrd[dir](nextBrd)) { |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
539 |
var w = this.evalFn(nextBrd, 1); |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
540 |
if (w > bestW) { |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
541 |
bestW = w; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
542 |
bestDir = dir; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
543 |
} |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
544 |
} |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
545 |
} |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
546 |
return bestDir; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
547 |
} |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
548 |
ai.survive.prototype.evalFn = function(brd, depth) { |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
549 |
if (brd.freeCnt() >= this.cfg.freeCells) |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
550 |
return 1; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
551 |
if (depth >= this.cfg.maxDepth) |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
552 |
return 0; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
553 |
var wMin = +Infinity; |
168
df8e645c3f36
Refactoring: rename "brdEngine" to "brd".
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
167
diff
changeset
|
554 |
var randBoard = new this.brd(); |
df8e645c3f36
Refactoring: rename "brdEngine" to "brd".
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
167
diff
changeset
|
555 |
var nextBrd = new this.brd(); |
155
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
556 |
exit: |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
557 |
for (var i = 0; i < 3; i++) { |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
558 |
for (var j = 0; j < 3; j++) { |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
559 |
if (brd.get(i, j) !== 0) |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
560 |
continue; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
561 |
brd.copy(randBoard); |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
562 |
randBoard.set(i, j, 1); |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
563 |
var wMax = -1; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
564 |
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
|
565 |
if (randBoard[ai.dirs[diri]](nextBrd)) { |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
566 |
var w = this.evalFn(nextBrd, depth+1); |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
567 |
if (w === 1) { |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
568 |
wMax = 1; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
569 |
break; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
570 |
} |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
571 |
wMax = Math.max(wMax, w); |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
572 |
} |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
573 |
} |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
574 |
if (wMax === -1) { |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
575 |
wMin = -1; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
576 |
break exit; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
577 |
} |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
578 |
wMin = Math.min(wMin, wMax); |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
579 |
} |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
580 |
} |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
581 |
if (wMin === +Infinity) |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
582 |
return -1; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
583 |
return wMin; |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
584 |
} |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
585 |
/* 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
|
586 |
ai.survive.prototype.cleanup = function() { |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
587 |
} |
1f8df90bd338
AI: Survive as long as possible.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
152
diff
changeset
|
588 |
|
163
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
589 |
|
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
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:
160
diff
changeset
|
592 |
// MonteCarlo simulations. |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
593 |
//////////////////////////////////////////////////////////////// |
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 |
/** |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
596 |
* Defines coefficient for linear resulted weight function. |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
597 |
* @name ai.MonteCarlo.cfg |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
598 |
* @namespace |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
599 |
* @property {number} maxDepth depth limit |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
600 |
* @property {number} simulations simulation count limit |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
601 |
*/ |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
602 |
|
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
603 |
/** MonteCarlo simulations. |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
604 |
* @param {Board} brd board engine from board.js |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
605 |
* @param {ai.MonteCarlo.cfg} cfg configuration settings |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
606 |
* @constructor */ |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
607 |
ai.MonteCarlo = function(brd, cfg) { |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
608 |
this.brd = brd; |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
609 |
this.cfg = ai.copyObj(ai.MonteCarlo.bestCfg); |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
610 |
ai.copyObj(cfg, this.cfg); |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
611 |
if (this.cfg.simulations <= 0) |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
612 |
this.cfg.simulations = ai.MonteCarlo.bestCfg.simulations; |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
613 |
if (!this.cfg.maxDepth || this.cfg.maxDepth <= 0 || 20 <= this.cfg.maxDepth) |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
614 |
this.cfg.maxDepth = ai.MonteCarlo.bestCfg.maxDepth; |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
615 |
} |
164
cdde49008500
Add more options to Monte Carlo heuristics.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
163
diff
changeset
|
616 |
ai.MonteCarlo.bestCfg = {simulations: 1000, maxDepth: 20, cornerBonus: 0, edgeBonus: 0, freeBonus: 0}; |
163
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
617 |
/** Select best direction for next step. */ |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
618 |
ai.MonteCarlo.prototype.analyse = function(brd2d) { |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
619 |
var origBrd = new this.brd(brd2d); |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
620 |
var nextBrd = new this.brd(); |
169 | 621 |
var bestUtility = - this.cfg.simulations; |
163
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
622 |
var bestDir; |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
623 |
var freeCnt = origBrd.freeCnt(); |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
624 |
for (var i = 0; i < ai.dirs.length; i++) { |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
625 |
var dir = ai.dirs[i]; |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
626 |
if (origBrd[dir](nextBrd)) { |
169 | 627 |
var utility = 0; |
163
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
628 |
for (var gameCnt = this.cfg.simulations; gameCnt > 0; gameCnt--) { |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
629 |
var tmpBrd = nextBrd.copy(); |
169 | 630 |
utility += this.play(tmpBrd, this.cfg.maxDepth); |
163
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
631 |
} |
171
6fce1391c2c0
Take max value at corner into account in first move.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
169
diff
changeset
|
632 |
utility /= this.cfg.simulations; |
6fce1391c2c0
Take max value at corner into account in first move.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
169
diff
changeset
|
633 |
|
6fce1391c2c0
Take max value at corner into account in first move.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
169
diff
changeset
|
634 |
var max = nextBrd.maxVal(); |
6fce1391c2c0
Take max value at corner into account in first move.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
169
diff
changeset
|
635 |
if (this.cfg.cornerBonus > 0 && nextBrd.atCorner(max)) |
6fce1391c2c0
Take max value at corner into account in first move.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
169
diff
changeset
|
636 |
utility += this.cfg.cornerBonus; |
6fce1391c2c0
Take max value at corner into account in first move.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
169
diff
changeset
|
637 |
if (this.cfg.edgeBonus > 0 && nextBrd.atEdge(max)) |
6fce1391c2c0
Take max value at corner into account in first move.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
169
diff
changeset
|
638 |
utility += this.cfg.edgeBonus; |
6fce1391c2c0
Take max value at corner into account in first move.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
169
diff
changeset
|
639 |
|
169 | 640 |
if (utility > bestUtility) { |
641 |
bestUtility = utility; |
|
163
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
642 |
bestDir = dir; |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
643 |
} |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
644 |
} |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
645 |
} |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
646 |
return bestDir; |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
647 |
} |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
648 |
ai.MonteCarlo.prototype.play = function(brd, depth) { |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
649 |
if (depth <= 0) { |
164
cdde49008500
Add more options to Monte Carlo heuristics.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
163
diff
changeset
|
650 |
return this.evalFn(brd); |
163
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
651 |
} |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
652 |
brd.rnd(1); |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
653 |
var dirs = ai.randDirs(); |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
654 |
for (var i = 0; i < 4; i++) { |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
655 |
var dir = dirs[i]; |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
656 |
var nextBrd = new brd.constructor(); |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
657 |
if (brd[dir](nextBrd)) { |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
658 |
return this.play(nextBrd, depth-1); |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
659 |
} |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
660 |
} |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
661 |
return -1; |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
662 |
} |
164
cdde49008500
Add more options to Monte Carlo heuristics.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
163
diff
changeset
|
663 |
ai.MonteCarlo.prototype.evalFn = function(brd) { |
171
6fce1391c2c0
Take max value at corner into account in first move.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
169
diff
changeset
|
664 |
return this.cfg.freeBonus * brd.freeCnt(); |
164
cdde49008500
Add more options to Monte Carlo heuristics.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
163
diff
changeset
|
665 |
} |
163
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
666 |
/* 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
|
667 |
ai.MonteCarlo.prototype.cleanup = function() { |
87479ae56889
Basic Monte Carlo AI.
Oleksandr Gavenko <gavenkoa@gmail.com>
parents:
160
diff
changeset
|
668 |
} |
87479ae56889
Basic Monte Carlo AI.
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parents:
160
diff
changeset
|
669 |