net.sf.colossus.ai

Class ParallelEvaluatorAI

java.lang.Object

net.sf.colossus.ai.AbstractAI

net.sf.colossus.ai.SimpleAI

net.sf.colossus.ai.ExperimentalAI

net.sf.colossus.ai.ParallelEvaluatorAI

All Implemented Interfaces:

AI

public class ParallelEvaluatorAI
extends ExperimentalAI

DON'T USE THAT ONE YET. This one implements a parallel findBestLegionMove. Unfortunately, SimpleAI implementation of evaluateLegionBattleMove is anything but thread-safe, and it goes very deep: Evaluations functions mostly fall-back to asking the Client object property of the current situation. So they have first to move all BattleCritter (which are only a view of full BattleUnit) to the evaluated position, then evaluate. This version only tests the parallelism, so evaluateLegionBattleMove is random. We would need to (1) implements Strike as BattleClientSide, a proper, per-battle extension of Battle (the way it is done on with BattleServerSide) (2) make sure all evaluate functions only use property of BattleClientSide, even if that means changing the state of BattleClientSide. (3) have a proper deep copy constructor in BattleClientSide, so we can work on several variant at once.

Author:

Romain Dolbeau

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private class	ParallelEvaluatorAI.findBestLegionMoveThread

Nested classes/interfaces inherited from class net.sf.colossus.ai.SimpleAI

SimpleAI.PowerSkill, SimpleAI.TriggerTimeIsUp

Nested classes/interfaces inherited from class net.sf.colossus.ai.AbstractAI

AbstractAI.AbstractAIOracle, AbstractAI.CreatureValueConstants, AbstractAI.MoveInfo

Field Summary

Fields

Modifier and Type	Field and Description
private static java.util.logging.Logger	LOGGER
private static int	NTHREADS

Fields inherited from class net.sf.colossus.ai.SimpleAI

MIN_ITERATIONS, timeIsUp, timeLimit

Fields inherited from class net.sf.colossus.ai.AbstractAI

bec, client, cvc, hintSectionUsed, random, variant

Constructor Summary

Constructors

Constructor and Description
ParallelEvaluatorAI(Client client)

Method Summary

Methods

Modifier and Type	Method and Description
protected int	evaluateLegionBattleMove(LegionMove lm)
protected LegionMove	findBestLegionMove(java.util.Collection<LegionMove> legionMoves) Evaluate all legion moves in the list, and return the best one.

Methods inherited from class net.sf.colossus.ai.ExperimentalAI

battleMove, cleanupBattle, evaluateCritterMove_Defender, evaluateCritterMove_Rangestrike, evaluateCritterMove_Strike, evaluateCritterMove_Titan, evaluateLegionBattleMoveAsAWhole, findLegionMoves, initBattle

Methods inherited from class net.sf.colossus.ai.SimpleAI

acquireAngel, chooseRecruit, concede, doInitialGameSplit, findWeakestTwoCritters, flee, getCreatureMoveLimit, getNativeValue, handleCarries, handleMulligans, masterMove, muster, pickColor, pickEngagement, pickEntrySide, pickMarker, pickStrikePenalty, RATIO_DRAW, RATIO_LOSE_HEAVY_LOSS, RATIO_WIN_HEAVY_LOSS, RATIO_WIN_MINIMAL_LOSS, reinforce, retryFailedBattleMoves, setupTimer, split, splitCallback, strike, summonAngel

Methods inherited from class net.sf.colossus.ai.AbstractAI

buildEnemyAttackMap, couldRecruitUp, countCreatureAccrossAllLegionFromPlayer, findStrikeMap, generateDamageMap, generateLegionMoves, getAcqStepValue, getBattleStrike, getBattleUnit, getCaretaker, getHintedRecruitmentValue, getHintedRecruitmentValueNonTitan, getHintedRecruitmentValueNonTitan, getInitialSplitHint, getKillValue, getKillValue, getNumberOfWaysToTerrain, getVariantRecruitHint, hasOpponentNativeCreature, isHumanLegion, makeLegionMove, rangeToClosestOpponent, setVariant

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

LOGGER

private static final java.util.logging.Logger LOGGER

NTHREADS

private static final int NTHREADS

See Also:

Constant Field Values

Constructor Detail

ParallelEvaluatorAI

public ParallelEvaluatorAI(Client client)

Method Detail

evaluateLegionBattleMove

protected int evaluateLegionBattleMove(LegionMove lm)

Overrides:

evaluateLegionBattleMove in class SimpleAI

findBestLegionMove

protected LegionMove findBestLegionMove(java.util.Collection<LegionMove> legionMoves)

Description copied from class: SimpleAI

Evaluate all legion moves in the list, and return the best one. Break out early if the time limit is exceeded.

Overrides:

findBestLegionMove in class SimpleAI