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mirror of https://github.com/vcmi/vcmi.git synced 2024-12-22 22:13:35 +02:00

Battle AI: add some comments + refactoring

This commit is contained in:
Andrii Danylchenko 2022-10-17 19:47:16 +03:00
parent 601ced3749
commit ebf4854801
8 changed files with 174 additions and 144 deletions

View File

@ -13,6 +13,11 @@
// Eventually only IBattleInfoCallback and battle::Unit should be used,
// CUnitState should be private and CStack should be removed completely
uint64_t averageDmg(const TDmgRange & range)
{
return (range.first + range.second) / 2;
}
AttackPossibility::AttackPossibility(BattleHex from, BattleHex dest, const BattleAttackInfo & attack)
: from(from), dest(dest), attack(attack)
{
@ -20,7 +25,7 @@ AttackPossibility::AttackPossibility(BattleHex from, BattleHex dest, const Battl
int64_t AttackPossibility::damageDiff() const
{
return damageDealt - damageReceived - collateralDamage + shootersBlockedDmg;
return defenderDamageReduce - attackerDamageReduce - collateralDamageReduce + shootersBlockedDmg;
}
int64_t AttackPossibility::attackValue() const
@ -28,23 +33,31 @@ int64_t AttackPossibility::attackValue() const
return damageDiff();
}
int64_t AttackPossibility::calculateDpsReduce(
/// <summary>
/// How enemy damage will be reduced by this attack
/// Half bounty for kill, half for making damage equal to enemy health
/// Bounty - the killed creature average damage calculated against attacker
/// </summary>
int64_t AttackPossibility::calculateDamageReduce(
const battle::Unit * attacker,
const battle::Unit * defender,
uint64_t damageDealt,
std::shared_ptr<CBattleInfoCallback> cb)
const CBattleInfoCallback & cb)
{
const float HEALTH_BOUNTY = 0.5;
const float KILL_BOUNTY = 1.0 - HEALTH_BOUNTY;
vstd::amin(damageDealt, defender->getAvailableHealth());
auto enemyDamageBeforeAttack = cb->battleEstimateDamage(BattleAttackInfo(defender, attacker, defender->canShoot()));
auto enemyDamageBeforeAttack = cb.battleEstimateDamage(BattleAttackInfo(defender, attacker, defender->canShoot()));
auto enemiesKilled = damageDealt / defender->MaxHealth() + (damageDealt % defender->MaxHealth() >= defender->getFirstHPleft() ? 1 : 0);
auto enemyDps = (enemyDamageBeforeAttack.first + enemyDamageBeforeAttack.second) / 2;
auto dpsPerEnemy = enemyDps / (double)defender->getCount();
auto enemyDamage = averageDmg(enemyDamageBeforeAttack);
auto damagePerEnemy = enemyDamage / (double)defender->getCount();
return (int64_t)(dpsPerEnemy * (enemiesKilled + damageDealt / (double)defender->MaxHealth()) / 2);
return (int64_t)(damagePerEnemy * (enemiesKilled * KILL_BOUNTY + damageDealt * HEALTH_BOUNTY / (double)defender->MaxHealth()));
}
int64_t AttackPossibility::evaluateBlockedShootersDmg(const BattleAttackInfo & attackInfo, BattleHex hex, const HypotheticBattle * state)
int64_t AttackPossibility::evaluateBlockedShootersDmg(const BattleAttackInfo & attackInfo, BattleHex hex, const HypotheticBattle & state)
{
int64_t res = 0;
@ -55,10 +68,10 @@ int64_t AttackPossibility::evaluateBlockedShootersDmg(const BattleAttackInfo & a
auto hexes = attacker->getSurroundingHexes(hex);
for(BattleHex tile : hexes)
{
auto st = state->battleGetUnitByPos(tile, true);
if(!st || !state->battleMatchOwner(st, attacker))
auto st = state.battleGetUnitByPos(tile, true);
if(!st || !state.battleMatchOwner(st, attacker))
continue;
if(!state->battleCanShoot(st))
if(!state.battleCanShoot(st))
continue;
BattleAttackInfo rangeAttackInfo(st, attacker, true);
@ -67,23 +80,23 @@ int64_t AttackPossibility::evaluateBlockedShootersDmg(const BattleAttackInfo & a
BattleAttackInfo meleeAttackInfo(st, attacker, false);
meleeAttackInfo.defenderPos = hex;
auto rangeDmg = getCbc()->battleEstimateDamage(rangeAttackInfo);
auto meleeDmg = getCbc()->battleEstimateDamage(meleeAttackInfo);
auto rangeDmg = state.battleEstimateDamage(rangeAttackInfo);
auto meleeDmg = state.battleEstimateDamage(meleeAttackInfo);
int64_t gain = (rangeDmg.first + rangeDmg.second - meleeDmg.first - meleeDmg.second) / 2 + 1;
int64_t gain = averageDmg(rangeDmg) - averageDmg(meleeDmg) + 1;
res += gain;
}
return res;
}
AttackPossibility AttackPossibility::evaluate(const BattleAttackInfo & attackInfo, BattleHex hex, const HypotheticBattle * state)
AttackPossibility AttackPossibility::evaluate(const BattleAttackInfo & attackInfo, BattleHex hex, const HypotheticBattle & state)
{
auto attacker = attackInfo.attacker;
auto defender = attackInfo.defender;
const std::string cachingStringBlocksRetaliation = "type_BLOCKS_RETALIATION";
static const auto selectorBlocksRetaliation = Selector::type()(Bonus::BLOCKS_RETALIATION);
const auto attackerSide = getCbc()->playerToSide(getCbc()->battleGetOwner(attacker));
const auto attackerSide = state.playerToSide(state.battleGetOwner(attacker));
const bool counterAttacksBlocked = attacker->hasBonus(selectorBlocksRetaliation, cachingStringBlocksRetaliation);
AttackPossibility bestAp(hex, BattleHex::INVALID, attackInfo);
@ -111,9 +124,9 @@ AttackPossibility AttackPossibility::evaluate(const BattleAttackInfo & attackInf
std::vector<const battle::Unit*> units;
if (attackInfo.shooting)
units = state->getAttackedBattleUnits(attacker, defHex, true, BattleHex::INVALID);
units = state.getAttackedBattleUnits(attacker, defHex, true, BattleHex::INVALID);
else
units = state->getAttackedBattleUnits(attacker, defHex, false, hex);
units = state.getAttackedBattleUnits(attacker, defHex, false, hex);
// ensure the defender is also affected
bool addDefender = true;
@ -139,11 +152,11 @@ AttackPossibility AttackPossibility::evaluate(const BattleAttackInfo & attackInf
for(int i = 0; i < totalAttacks; i++)
{
int64_t damageDealt, damageReceived, enemyDpsReduce, ourDpsReduce;
int64_t damageDealt, damageReceived, defenderDamageReduce, attackerDamageReduce;
TDmgRange retaliation(0, 0);
auto attackDmg = getCbc()->battleEstimateDamage(ap.attack, &retaliation);
TDmgRange enemyDamageBeforeAttack = getCbc()->battleEstimateDamage(BattleAttackInfo(u, attacker, u->canShoot()));
auto attackDmg = state.battleEstimateDamage(ap.attack, &retaliation);
TDmgRange defenderDamageBeforeAttack = state.battleEstimateDamage(BattleAttackInfo(u, attacker, u->canShoot()));
vstd::amin(attackDmg.first, defenderState->getAvailableHealth());
vstd::amin(attackDmg.second, defenderState->getAvailableHealth());
@ -151,36 +164,36 @@ AttackPossibility AttackPossibility::evaluate(const BattleAttackInfo & attackInf
vstd::amin(retaliation.first, ap.attackerState->getAvailableHealth());
vstd::amin(retaliation.second, ap.attackerState->getAvailableHealth());
damageDealt = (attackDmg.first + attackDmg.second) / 2;
enemyDpsReduce = calculateDpsReduce(attacker, defender, damageDealt, getCbc());
damageDealt = averageDmg(attackDmg);
defenderDamageReduce = calculateDamageReduce(attacker, defender, damageDealt, state);
ap.attackerState->afterAttack(attackInfo.shooting, false);
//FIXME: use ranged retaliation
damageReceived = 0;
ourDpsReduce = 0;
attackerDamageReduce = 0;
if (!attackInfo.shooting && defenderState->ableToRetaliate() && !counterAttacksBlocked)
{
damageReceived = (retaliation.first + retaliation.second) / 2;
ourDpsReduce = calculateDpsReduce(defender, attacker, damageReceived, getCbc());
damageReceived = averageDmg(retaliation);
attackerDamageReduce = calculateDamageReduce(defender, attacker, damageReceived, state);
defenderState->afterAttack(attackInfo.shooting, true);
}
bool isEnemy = state->battleMatchOwner(attacker, u);
bool isEnemy = state.battleMatchOwner(attacker, u);
// this includes enemy units as well as attacker units under enemy's mind control
if(isEnemy)
ap.damageDealt += enemyDpsReduce;
ap.defenderDamageReduce += defenderDamageReduce;
// damaging attacker's units (even those under enemy's mind control) is considered friendly fire
if(attackerSide == u->unitSide())
ap.collateralDamage += enemyDpsReduce;
ap.collateralDamageReduce += defenderDamageReduce;
if(u->unitId() == defender->unitId() ||
(!attackInfo.shooting && CStack::isMeleeAttackPossible(u, attacker, hex)))
{
//FIXME: handle RANGED_RETALIATION ?
ap.damageReceived += ourDpsReduce;
ap.attackerDamageReduce += attackerDamageReduce;
}
ap.attackerState->damage(damageReceived);
@ -198,11 +211,11 @@ AttackPossibility AttackPossibility::evaluate(const BattleAttackInfo & attackInf
// check how much damage we gain from blocking enemy shooters on this hex
bestAp.shootersBlockedDmg = evaluateBlockedShootersDmg(attackInfo, hex, state);
logAi->debug("BattleAI best AP: %s -> %s at %d from %d, affects %d units: %lld %lld %lld %lld",
logAi->debug("BattleAI best AP: %s -> %s at %d from %d, affects %d units: d:%lld a:%lld c:%lld s:%lld",
attackInfo.attacker->unitType()->identifier,
attackInfo.defender->unitType()->identifier,
(int)bestAp.dest, (int)bestAp.from, (int)bestAp.affectedUnits.size(),
bestAp.damageDealt, bestAp.damageReceived, bestAp.collateralDamage, bestAp.shootersBlockedDmg);
bestAp.defenderDamageReduce, bestAp.attackerDamageReduce, bestAp.collateralDamageReduce, bestAp.shootersBlockedDmg);
//TODO other damage related to attack (eg. fire shield and other abilities)
return bestAp;

View File

@ -15,6 +15,10 @@
#define BATTLE_TRACE_LEVEL 0
/// <summary>
/// Evaluate attack value of one particular attack taking into account various effects like
/// retaliation, 2-hex breath, collateral damage, shooters blocked damage
/// </summary>
class AttackPossibility
{
public:
@ -26,9 +30,9 @@ public:
std::vector<std::shared_ptr<battle::CUnitState>> affectedUnits;
int64_t damageDealt = 0;
int64_t damageReceived = 0; //usually by counter-attack
int64_t collateralDamage = 0; // friendly fire (usually by two-hex attacks)
int64_t defenderDamageReduce = 0;
int64_t attackerDamageReduce = 0; //usually by counter-attack
int64_t collateralDamageReduce = 0; // friendly fire (usually by two-hex attacks)
int64_t shootersBlockedDmg = 0;
AttackPossibility(BattleHex from, BattleHex dest, const BattleAttackInfo & attack_);
@ -36,14 +40,14 @@ public:
int64_t damageDiff() const;
int64_t attackValue() const;
static AttackPossibility evaluate(const BattleAttackInfo & attackInfo, BattleHex hex, const HypotheticBattle * state);
static AttackPossibility evaluate(const BattleAttackInfo & attackInfo, BattleHex hex, const HypotheticBattle & state);
static int64_t calculateDpsReduce(
static int64_t calculateDamageReduce(
const battle::Unit * attacker,
const battle::Unit * defender,
uint64_t damageDealt,
std::shared_ptr<CBattleInfoCallback> cb);
const CBattleInfoCallback & cb);
private:
static int64_t evaluateBlockedShootersDmg(const BattleAttackInfo & attackInfo, BattleHex hex, const HypotheticBattle * state);
static int64_t evaluateBlockedShootersDmg(const BattleAttackInfo & attackInfo, BattleHex hex, const HypotheticBattle & state);
};

View File

@ -161,9 +161,8 @@ BattleAction CBattleAI::activeStack( const CStack * stack )
}
HypotheticBattle hb(env.get(), cb);
int turn = 0;
PotentialTargets targets(stack, &hb);
PotentialTargets targets(stack, hb);
BattleExchangeEvaluator scoreEvaluator(cb, env);
auto moveTarget = scoreEvaluator.findMoveTowardsUnreachable(stack, targets, hb);
@ -171,7 +170,7 @@ BattleAction CBattleAI::activeStack( const CStack * stack )
if(!targets.possibleAttacks.empty())
{
#if BATTLE_TRACE_LEVEL==1
#if BATTLE_TRACE_LEVEL>=1
logAi->trace("Evaluating attack for %s", stack->getDescription());
#endif
@ -205,15 +204,15 @@ BattleAction CBattleAI::activeStack( const CStack * stack )
else
{
result = BattleAction::makeMeleeAttack(stack, bestAttack.attack.defender->getPosition(), bestAttack.from);
action = "mellee";
action = "melee";
}
logAi->debug("BattleAI: %s -> %s x %d, %s, from %d curpos %d dist %d speed %d: %lld %lld %lld",
logAi->debug("BattleAI: %s -> %s x %d, %s, from %d curpos %d dist %d speed %d: +%lld -%lld = %lld",
bestAttack.attackerState->unitType()->identifier,
bestAttack.affectedUnits[0]->unitType()->identifier,
(int)bestAttack.affectedUnits[0]->getCount(), action, (int)bestAttack.from, (int)bestAttack.attack.attacker->getPosition().hex,
bestAttack.attack.chargedFields, bestAttack.attack.attacker->Speed(0, true),
bestAttack.damageDealt, bestAttack.damageReceived, bestAttack.attackValue()
bestAttack.defenderDamageReduce, bestAttack.attackerDamageReduce, bestAttack.attackValue()
);
}
}
@ -323,12 +322,15 @@ BattleAction CBattleAI::goTowardsNearest(const CStack * stack, std::vector<Battl
// We just check all available hexes and pick the one closest to the target.
auto nearestAvailableHex = vstd::minElementByFun(avHexes, [&](BattleHex hex) -> int
{
const int MOAT_PENALTY = 100; // avoid landing on moat
const int BLOCKED_STACK_PENALTY = 100; // avoid landing on moat
auto distance = BattleHex::getDistance(bestNeighbor, hex);
if(vstd::contains(moatHexes, hex))
distance += 100;
distance += MOAT_PENALTY;
return scoreEvaluator.checkPositionBlocksOurStacks(hb, stack, hex) ? 100 + distance : distance;
return scoreEvaluator.checkPositionBlocksOurStacks(hb, stack, hex) ? BLOCKED_STACK_PENALTY + distance : distance;
});
return BattleAction::makeMove(stack, *nearestAvailableHex);
@ -444,7 +446,7 @@ void CBattleAI::attemptCastingSpell()
using ValueMap = PossibleSpellcast::ValueMap;
auto evaluateQueue = [&](ValueMap & values, const std::vector<battle::Units> & queue, HypotheticBattle * state, size_t minTurnSpan, bool * enemyHadTurnOut) -> bool
auto evaluateQueue = [&](ValueMap & values, const std::vector<battle::Units> & queue, HypotheticBattle & state, size_t minTurnSpan, bool * enemyHadTurnOut) -> bool
{
bool firstRound = true;
bool enemyHadTurn = false;
@ -455,7 +457,7 @@ void CBattleAI::attemptCastingSpell()
for(auto & round : queue)
{
if(!firstRound)
state->nextRound(0);//todo: set actual value?
state.nextRound(0);//todo: set actual value?
for(auto unit : round)
{
if(!vstd::contains(values, unit->unitId()))
@ -464,11 +466,11 @@ void CBattleAI::attemptCastingSpell()
if(!unit->alive())
continue;
if(state->battleGetOwner(unit) != playerID)
if(state.battleGetOwner(unit) != playerID)
{
enemyHadTurn = true;
if(!firstRound || state->battleCastSpells(unit->unitSide()) == 0)
if(!firstRound || state.battleCastSpells(unit->unitSide()) == 0)
{
//enemy could counter our spell at this point
//anyway, we do not know what enemy will do
@ -482,7 +484,7 @@ void CBattleAI::attemptCastingSpell()
ourTurnSpan++;
}
state->nextTurn(unit->unitId());
state.nextTurn(unit->unitId());
PotentialTargets pt(unit, state);
@ -490,22 +492,22 @@ void CBattleAI::attemptCastingSpell()
{
AttackPossibility ap = pt.bestAction();
auto swb = state->getForUpdate(unit->unitId());
auto swb = state.getForUpdate(unit->unitId());
*swb = *ap.attackerState;
if(ap.damageDealt > 0)
if(ap.defenderDamageReduce > 0)
swb->removeUnitBonus(Bonus::UntilAttack);
if(ap.damageReceived > 0)
if(ap.attackerDamageReduce > 0)
swb->removeUnitBonus(Bonus::UntilBeingAttacked);
for(auto affected : ap.affectedUnits)
{
swb = state->getForUpdate(affected->unitId());
swb = state.getForUpdate(affected->unitId());
*swb = *affected;
if(ap.damageDealt > 0)
if(ap.defenderDamageReduce > 0)
swb->removeUnitBonus(Bonus::UntilBeingAttacked);
if(ap.damageReceived > 0 && ap.attack.defender->unitId() == affected->unitId())
if(ap.attackerDamageReduce > 0 && ap.attack.defender->unitId() == affected->unitId())
swb->removeUnitBonus(Bonus::UntilAttack);
}
}
@ -513,7 +515,7 @@ void CBattleAI::attemptCastingSpell()
auto bav = pt.bestActionValue();
//best action is from effective owner`s point if view, we need to convert to our point if view
if(state->battleGetOwner(unit) != playerID)
if(state.battleGetOwner(unit) != playerID)
bav = -bav;
values[unit->unitId()] += bav;
}
@ -566,7 +568,7 @@ void CBattleAI::attemptCastingSpell()
HypotheticBattle state(env.get(), cb);
evaluateQueue(valueOfStack, turnOrder, &state, 0, &enemyHadTurn);
evaluateQueue(valueOfStack, turnOrder, state, 0, &enemyHadTurn);
if(!enemyHadTurn)
{
@ -614,7 +616,7 @@ void CBattleAI::attemptCastingSpell()
state.battleGetTurnOrder(newTurnOrder, amount, 2);
const bool turnSpanOK = evaluateQueue(newValueOfStack, newTurnOrder, &state, minTurnSpan, nullptr);
const bool turnSpanOK = evaluateQueue(newValueOfStack, newTurnOrder, state, minTurnSpan, nullptr);
if(turnSpanOK || castNow)
{

View File

@ -18,12 +18,12 @@ AttackerValue::AttackerValue()
}
MoveTarget::MoveTarget()
:positions()
: positions()
{
score = EvaluationResult::INEFFECTIVE_SCORE;
}
int64_t BattleExchangeVariant::trackAttack(const AttackPossibility & ap, HypotheticBattle * state)
int64_t BattleExchangeVariant::trackAttack(const AttackPossibility & ap, HypotheticBattle & state)
{
auto affectedUnits = ap.affectedUnits;
@ -31,7 +31,7 @@ int64_t BattleExchangeVariant::trackAttack(const AttackPossibility & ap, Hypothe
for(auto affectedUnit : affectedUnits)
{
auto unitToUpdate = state->getForUpdate(affectedUnit->unitId());
auto unitToUpdate = state.getForUpdate(affectedUnit->unitId());
unitToUpdate->health = affectedUnit->health;
unitToUpdate->shots = affectedUnit->shots;
@ -43,9 +43,9 @@ int64_t BattleExchangeVariant::trackAttack(const AttackPossibility & ap, Hypothe
dpsScore += attackValue;
#if BATTLE_TRACE_LEVEL==1
#if BATTLE_TRACE_LEVEL>=1
logAi->trace(
"%s -> %s, ap attack, %s, dps: %d, score: %d",
"%s -> %s, ap attack, %s, dps: %lld, score: %lld",
ap.attack.attacker->getDescription(),
ap.attack.defender->getDescription(),
ap.attack.shooting ? "shot" : "mellee",
@ -61,14 +61,14 @@ int64_t BattleExchangeVariant::trackAttack(
std::shared_ptr<StackWithBonuses> defender,
bool shooting,
bool isOurAttack,
std::shared_ptr<CBattleInfoCallback> cb,
const CBattleInfoCallback & cb,
bool evaluateOnly)
{
const std::string cachingStringBlocksRetaliation = "type_BLOCKS_RETALIATION";
static const auto selectorBlocksRetaliation = Selector::type()(Bonus::BLOCKS_RETALIATION);
const bool counterAttacksBlocked = attacker->hasBonus(selectorBlocksRetaliation, cachingStringBlocksRetaliation);
TDmgRange retalitation;
TDmgRange retaliation;
BattleAttackInfo bai(attacker.get(), defender.get(), shooting);
if(shooting)
@ -76,30 +76,30 @@ int64_t BattleExchangeVariant::trackAttack(
bai.attackerPos.setXY(8, 5);
}
auto attack = cb->battleEstimateDamage(bai, &retalitation);
auto attack = cb.battleEstimateDamage(bai, &retaliation);
int64_t attackDamage = (attack.first + attack.second) / 2;
int64_t defenderDpsReduce = AttackPossibility::calculateDpsReduce(attacker.get(), defender.get(), attackDamage, cb);
int64_t attackerDpsReduce = 0;
int64_t defenderDamageReduce = AttackPossibility::calculateDamageReduce(attacker.get(), defender.get(), attackDamage, cb);
int64_t attackerDamageReduce = 0;
if(!evaluateOnly)
{
#if BATTLE_TRACE_LEVEL==1
#if BATTLE_TRACE_LEVEL>=1
logAi->trace(
"%s -> %s, normal attack, %s, dps: %d, %d",
"%s -> %s, normal attack, %s, dps: %lld, %lld",
attacker->getDescription(),
defender->getDescription(),
shooting ? "shot" : "mellee",
attackDamage,
defenderDpsReduce);
defenderDamageReduce);
#endif
if(isOurAttack)
{
dpsScore += defenderDpsReduce;
attackerValue[attacker->unitId()].value += defenderDpsReduce;
dpsScore += defenderDamageReduce;
attackerValue[attacker->unitId()].value += defenderDamageReduce;
}
else
dpsScore -= defenderDpsReduce;
dpsScore -= defenderDamageReduce;
defender->damage(attackDamage);
attacker->afterAttack(shooting, false);
@ -107,45 +107,45 @@ int64_t BattleExchangeVariant::trackAttack(
if(defender->alive() && defender->ableToRetaliate() && !counterAttacksBlocked && !shooting)
{
if(retalitation.second != 0)
if(retaliation.second != 0)
{
auto retalitationDamage = (retalitation.first + retalitation.second) / 2;
attackerDpsReduce = AttackPossibility::calculateDpsReduce(defender.get(), attacker.get(), retalitationDamage, cb);
auto retaliationDamage = (retaliation.first + retaliation.second) / 2;
attackerDamageReduce = AttackPossibility::calculateDamageReduce(defender.get(), attacker.get(), retaliationDamage, cb);
if(!evaluateOnly)
{
#if BATTLE_TRACE_LEVEL==1
#if BATTLE_TRACE_LEVEL>=1
logAi->trace(
"%s -> %s, retalitation, dps: %d, %d",
"%s -> %s, retaliation, dps: %lld, %lld",
defender->getDescription(),
attacker->getDescription(),
retalitationDamage,
attackerDpsReduce);
retaliationDamage,
attackerDamageReduce);
#endif
if(isOurAttack)
{
dpsScore -= attackerDpsReduce;
dpsScore -= attackerDamageReduce;
attackerValue[attacker->unitId()].isRetalitated = true;
}
else
{
dpsScore += attackerDpsReduce;
attackerValue[defender->unitId()].value += attackerDpsReduce;
dpsScore += attackerDamageReduce;
attackerValue[defender->unitId()].value += attackerDamageReduce;
}
attacker->damage(retalitationDamage);
attacker->damage(retaliationDamage);
defender->afterAttack(false, true);
}
}
}
auto score = defenderDpsReduce - attackerDpsReduce;
auto score = defenderDamageReduce - attackerDamageReduce;
#if BATTLE_TRACE_LEVEL==1
#if BATTLE_TRACE_LEVEL>=1
if(!score)
{
logAi->trace("Zero %d %d", defenderDpsReduce, attackerDpsReduce);
logAi->trace("Attack has zero score d:%lld a:%lld", defenderDamageReduce, attackerDamageReduce);
}
#endif
@ -171,7 +171,7 @@ EvaluationResult BattleExchangeEvaluator::findBestTarget(const battle::Unit * ac
if(!activeStack->waited())
{
#if BATTLE_TRACE_LEVEL==1
#if BATTLE_TRACE_LEVEL>=1
logAi->trace("Evaluating waited attack for %s", activeStack->getDescription());
#endif
@ -233,7 +233,7 @@ MoveTarget BattleExchangeEvaluator::findMoveTowardsUnreachable(const battle::Uni
for(auto hex : hexes)
{
auto bai = BattleAttackInfo(activeStack, closestStack, cb->battleCanShoot(activeStack));
auto attack = AttackPossibility::evaluate(bai, hex, &hb);
auto attack = AttackPossibility::evaluate(bai, hex, hb);
attack.shootersBlockedDmg = 0; // we do not want to count on it, it is not for sure
@ -323,7 +323,7 @@ std::vector<const battle::Unit *> BattleExchangeEvaluator::getExchangeUnits(
if(allReachableUnits.size() < 2)
{
#if BATTLE_TRACE_LEVEL==1
#if BATTLE_TRACE_LEVEL>=1
logAi->trace("Reachability map contains only %d stacks", allReachableUnits.size());
#endif
@ -347,8 +347,8 @@ int64_t BattleExchangeEvaluator::calculateExchange(
PotentialTargets & targets,
HypotheticBattle & hb)
{
#if BATTLE_TRACE_LEVEL==1
logAi->trace("Battle exchange at %d", ap.attack.shooting ? ap.dest : ap.from);
#if BATTLE_TRACE_LEVEL>=1
logAi->trace("Battle exchange at %lld", ap.attack.shooting ? ap.dest : ap.from);
#endif
std::vector<const battle::Unit *> ourStacks;
@ -396,7 +396,7 @@ int64_t BattleExchangeEvaluator::calculateExchange(
if(!attacker->alive())
{
#if BATTLE_TRACE_LEVEL==1
#if BATTLE_TRACE_LEVEL>=1
logAi->trace( "Attacker is dead");
#endif
@ -415,11 +415,11 @@ int64_t BattleExchangeEvaluator::calculateExchange(
stackWithBonuses,
exchangeBattle.battleCanShoot(stackWithBonuses.get()),
isOur,
cb,
*cb,
true);
#if BATTLE_TRACE_LEVEL==1
logAi->trace("Best target selector %s->%s score = %d", attacker->getDescription(), u->getDescription(), score);
#if BATTLE_TRACE_LEVEL>=1
logAi->trace("Best target selector %s->%s score = %lld", attacker->getDescription(), u->getDescription(), score);
#endif
return score;
@ -448,7 +448,7 @@ int64_t BattleExchangeEvaluator::calculateExchange(
}
else
{
#if BATTLE_TRACE_LEVEL==1
#if BATTLE_TRACE_LEVEL>=1
logAi->trace("Battle queue is empty and no reachable enemy.");
#endif
@ -463,13 +463,13 @@ int64_t BattleExchangeEvaluator::calculateExchange(
if(canUseAp && activeUnit == ap.attack.attacker && targetUnit == ap.attack.defender)
{
v.trackAttack(ap, &exchangeBattle);
v.trackAttack(ap, exchangeBattle);
}
else
{
for(int i = 0; i < totalAttacks; i++)
{
v.trackAttack(attacker, defender, shooting, isOur, cb);
v.trackAttack(attacker, defender, shooting, isOur, exchangeBattle);
if(!attacker->alive() || !defender->alive())
break;
@ -489,10 +489,12 @@ int64_t BattleExchangeEvaluator::calculateExchange(
});
}
// avoid blocking path for stronger stack by weaker stack
// the method checks if all stacks can be placed around enemy
v.adjustPositions(melleeAttackers, ap, reachabilityMap);
#if BATTLE_TRACE_LEVEL==1
logAi->trace("Exchange score: %ld", v.getScore());
#if BATTLE_TRACE_LEVEL>=1
logAi->trace("Exchange score: %lld", v.getScore());
#endif
return v.getScore();
@ -522,7 +524,7 @@ void BattleExchangeVariant::adjustPositions(
vstd::erase_if_present(hexes, ap.attack.attacker->occupiedHex(ap.attack.attackerPos));
}
int64_t notRealizedDps = 0;
int64_t notRealizedDamage = 0;
for(auto unit : attackers)
{
@ -534,7 +536,7 @@ void BattleExchangeVariant::adjustPositions(
return vstd::contains(reachabilityMap[h], unit);
}))
{
notRealizedDps += attackerValue[unit->unitId()].value;
notRealizedDamage += attackerValue[unit->unitId()].value;
continue;
}
@ -542,7 +544,7 @@ void BattleExchangeVariant::adjustPositions(
{
auto score = vstd::contains(reachabilityMap[h], unit)
? reachabilityMap[h].size()
: 1000;
: 0;
if(unit->doubleWide())
{
@ -558,7 +560,7 @@ void BattleExchangeVariant::adjustPositions(
hexes.erase(desiredPosition);
}
if(notRealizedDps > ap.attackValue() && notRealizedDps > attackerValue[ap.attack.attacker->unitId()].value)
if(notRealizedDamage > ap.attackValue() && notRealizedDamage > attackerValue[ap.attack.attacker->unitId()].value)
{
dpsScore = EvaluationResult::INEFFECTIVE_SCORE;
}
@ -566,9 +568,11 @@ void BattleExchangeVariant::adjustPositions(
void BattleExchangeEvaluator::updateReachabilityMap(HypotheticBattle & hb)
{
turnOrder.clear();
const int TURN_DEPTH = 2;
hb.battleGetTurnOrder(turnOrder, 1000, 2);
turnOrder.clear();
hb.battleGetTurnOrder(turnOrder, std::numeric_limits<int>::max(), TURN_DEPTH);
reachabilityMap.clear();
for(int turn = 0; turn < turnOrder.size(); turn++)
@ -618,9 +622,14 @@ void BattleExchangeEvaluator::updateReachabilityMap(HypotheticBattle & hb)
}
}
// avoid blocking path for stronger stack by weaker stack
bool BattleExchangeEvaluator::checkPositionBlocksOurStacks(HypotheticBattle & hb, const battle::Unit * activeUnit, BattleHex position)
{
int blockingScore = 0;
const int BLOCKING_THRESHOLD = 70;
const int BLOCKING_OWN_ATTACK_PENALTY = 100;
const int BLOCKING_OWN_MOVE_PENALTY = 1;
float blockingScore = 0;
auto activeUnitDamage = activeUnit->getMinDamage(hb.battleCanShoot(activeUnit)) * activeUnit->getCount();
@ -638,9 +647,7 @@ bool BattleExchangeEvaluator::checkPositionBlocksOurStacks(HypotheticBattle & hb
continue;
auto blockedUnitDamage = unit->getMinDamage(hb.battleCanShoot(unit)) * unit->getCount();
if(blockedUnitDamage < activeUnitDamage)
continue;
auto ratio = blockedUnitDamage / (blockedUnitDamage + activeUnitDamage);
auto unitReachability = turnBattle.getReachability(unit);
@ -668,15 +675,15 @@ bool BattleExchangeEvaluator::checkPositionBlocksOurStacks(HypotheticBattle & hb
if(!reachable && vstd::contains(reachabilityMap[hex], unit))
{
blockingScore += enemyUnit ? 100 : 1;
blockingScore += ratio * (enemyUnit ? BLOCKING_OWN_ATTACK_PENALTY : BLOCKING_OWN_MOVE_PENALTY);
}
}
}
}
#if BATTLE_TRACE_LEVEL==1
logAi->trace("Position %d, blocking score %d", position.hex, blockingScore);
#if BATTLE_TRACE_LEVEL>=1
logAi->trace("Position %d, blocking score %f", position.hex, blockingScore);
#endif
return blockingScore > 50;
return blockingScore > BLOCKING_THRESHOLD;
}

View File

@ -47,6 +47,12 @@ struct EvaluationResult
}
};
/// <summary>
/// The class represents evaluation of attack value
/// of exchanges between all stacks which can access particular hex
/// starting from initial attack represented by AttackPossibility and further according turn order.
/// Negative score value means we get more demage than deal
/// </summary>
class BattleExchangeVariant
{
public:
@ -55,14 +61,14 @@ public:
{
}
int64_t trackAttack(const AttackPossibility & ap, HypotheticBattle * state);
int64_t trackAttack(const AttackPossibility & ap, HypotheticBattle & state);
int64_t trackAttack(
std::shared_ptr<StackWithBonuses> attacker,
std::shared_ptr<StackWithBonuses> defender,
bool shooting,
bool isOurAttack,
std::shared_ptr<CBattleInfoCallback> cb,
const CBattleInfoCallback & cb,
bool evaluateOnly = false);
int64_t getScore() const { return dpsScore; }

View File

@ -11,11 +11,11 @@
#include "PotentialTargets.h"
#include "../../lib/CStack.h"//todo: remove
PotentialTargets::PotentialTargets(const battle::Unit * attacker, const HypotheticBattle * state)
PotentialTargets::PotentialTargets(const battle::Unit * attacker, const HypotheticBattle & state)
{
auto attackerInfo = state->battleGetUnitByID(attacker->unitId());
auto reachability = state->getReachability(attackerInfo);
auto avHexes = state->battleGetAvailableHexes(reachability, attackerInfo);
auto attackerInfo = state.battleGetUnitByID(attacker->unitId());
auto reachability = state.getReachability(attackerInfo);
auto avHexes = state.battleGetAvailableHexes(reachability, attackerInfo);
//FIXME: this should part of battleGetAvailableHexes
bool forceTarget = false;
@ -25,7 +25,7 @@ PotentialTargets::PotentialTargets(const battle::Unit * attacker, const Hypothet
if(attackerInfo->hasBonusOfType(Bonus::ATTACKS_NEAREST_CREATURE))
{
forceTarget = true;
auto nearest = state->getNearestStack(attackerInfo);
auto nearest = state.getNearestStack(attackerInfo);
if(nearest.first != nullptr)
{
@ -34,14 +34,14 @@ PotentialTargets::PotentialTargets(const battle::Unit * attacker, const Hypothet
}
}
auto aliveUnits = state->battleGetUnitsIf([=](const battle::Unit * unit)
auto aliveUnits = state.battleGetUnitsIf([=](const battle::Unit * unit)
{
return unit->isValidTarget() && unit->unitId() != attackerInfo->unitId();
});
for(auto defender : aliveUnits)
{
if(!forceTarget && !state->battleMatchOwner(attackerInfo, defender))
if(!forceTarget && !state.battleMatchOwner(attackerInfo, defender))
continue;
auto GenerateAttackInfo = [&](bool shooting, BattleHex hex) -> AttackPossibility
@ -61,7 +61,7 @@ PotentialTargets::PotentialTargets(const battle::Unit * attacker, const Hypothet
else
unreachableEnemies.push_back(defender);
}
else if(state->battleCanShoot(attackerInfo, defender->getPosition()))
else if(state.battleCanShoot(attackerInfo, defender->getPosition()))
{
possibleAttacks.push_back(GenerateAttackInfo(true, BattleHex::INVALID));
}
@ -84,22 +84,18 @@ PotentialTargets::PotentialTargets(const battle::Unit * attacker, const Hypothet
boost::sort(possibleAttacks, [](const AttackPossibility & lhs, const AttackPossibility & rhs) -> bool
{
if(lhs.collateralDamage > rhs.collateralDamage)
return false;
if(lhs.collateralDamage < rhs.collateralDamage)
return true;
return (lhs.damageDealt + lhs.shootersBlockedDmg - lhs.damageReceived > rhs.damageDealt + rhs.shootersBlockedDmg - rhs.damageReceived);
return lhs.damageDiff() > rhs.damageDiff();
});
if (!possibleAttacks.empty())
{
auto & bestAp = possibleAttacks[0];
logGlobal->info("Battle AI best: %s -> %s at %d from %d, affects %d units: %lld %lld %lld %lld",
logGlobal->info("Battle AI best: %s -> %s at %d from %d, affects %d units: d:%lld a:%lld c:%lld s:%lld",
bestAp.attack.attacker->unitType()->identifier,
state->battleGetUnitByPos(bestAp.dest)->unitType()->identifier,
state.battleGetUnitByPos(bestAp.dest)->unitType()->identifier,
(int)bestAp.dest, (int)bestAp.from, (int)bestAp.affectedUnits.size(),
bestAp.damageDealt, bestAp.damageReceived, bestAp.collateralDamage, bestAp.shootersBlockedDmg);
bestAp.defenderDamageReduce, bestAp.attackerDamageReduce, bestAp.collateralDamageReduce, bestAp.shootersBlockedDmg);
}
}
@ -107,6 +103,7 @@ int64_t PotentialTargets::bestActionValue() const
{
if(possibleAttacks.empty())
return 0;
return bestAction().attackValue();
}
@ -114,6 +111,6 @@ const AttackPossibility & PotentialTargets::bestAction() const
{
if(possibleAttacks.empty())
throw std::runtime_error("No best action, since we don't have any actions");
return possibleAttacks.at(0);
//return *vstd::maxElementByFun(possibleAttacks, [](const AttackPossibility &ap) { return ap.attackValue(); } );
return possibleAttacks.front();
}

View File

@ -17,7 +17,7 @@ public:
std::vector<const battle::Unit *> unreachableEnemies;
PotentialTargets(){};
PotentialTargets(const battle::Unit * attacker, const HypotheticBattle * state);
PotentialTargets(const battle::Unit * attacker, const HypotheticBattle & state);
const AttackPossibility & bestAction() const;
int64_t bestActionValue() const;

View File

@ -180,13 +180,14 @@ std::vector<CGPathNode *> AINodeStorage::getInitialNodes()
for(auto actorPtr : actors)
{
ChainActor * actor = actorPtr.get();
AIPathNode * initialNode =
getOrCreateNode(actor->initialPosition, actor->layer, actor)
.get();
if(!initialNode)
auto allocated = getOrCreateNode(actor->initialPosition, actor->layer, actor);
if(!allocated)
continue;
AIPathNode * initialNode = allocated.get();
initialNode->inPQ = false;
initialNode->pq = nullptr;
initialNode->turns = actor->initialTurn;