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AI: reworked blockers selections:

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* now computer will use simplified 1 vs 1 combat damage simulations to choose better blockers (due better game score after combat);
* it's not a full combat simulation, but support many things like non-stack abilities, damage replacement effects and SBA -- much better than older PT compare (related to #13290);
* now AI correctly use a blockers with deathtouth, indestructible, first/double strike and other abilities;
* chump blocks also supported (chump logic implemented before in 92b7ed8efc, related to #4485);
This commit is contained in:
Oleg Agafonov 2025-02-06 06:28:17 +04:00
parent 7d229e511c
commit b4fa6ace66
3 changed files with 108 additions and 11 deletions
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42
Mage.Server.Plugins/Mage.Player.AI.MA/src/mage/player/ai/util/CombatUtil.java
View file

@ -1,10 +1,13 @@
package mage.player.ai.util;
import mage.abilities.Ability;
import mage.abilities.common.SimpleStaticAbility;
import mage.abilities.keyword.DoubleStrikeAbility;
import mage.abilities.keyword.InfectAbility;
import mage.counters.CounterType;
import mage.game.Game;
import mage.game.combat.Combat;
import mage.game.combat.CombatGroup;
import mage.game.events.GameEvent;
import mage.game.permanent.Permanent;
import mage.game.turn.CombatDamageStep;
@ -203,7 +206,7 @@ public final class CombatUtil {
blockedCount++;
}
// find good sacrifices
// find good sacrifices (chump blocks also supported due bad game score on loose)
// TODO: add chump blocking support here?
// TODO: there are many triggers on damage, attack, etc - it can't be processed without real game simulations
if (blocker == null) {
@ -339,13 +342,38 @@ public final class CombatUtil {
// so blocker will block same creature with same score without penalty
int startScore = GameStateEvaluator2.evaluate(defendingPlayerId, sim, false).getTotalScore();
// fake game simulation (manual PT calculation)
// fake combat simulation (simple damage simulation)
Permanent simAttacker = sim.getPermanent(attacker.getId());
Permanent simBlocker = sim.getPermanent(blocker.getId());
if (simAttacker == null || simBlocker == null) {
throw new IllegalArgumentException("Broken sim game, can't find attacker or blocker");
}
// don't ask about that hacks - just replace to real combat simulation someday (another hack but with full stack resolve)
// first damage step
simulateCombatDamage(sim, simBlocker, simAttacker, true);
simulateCombatDamage(sim, simAttacker, simBlocker, true);
simAttacker.applyDamage(sim);
simBlocker.applyDamage(sim);
sim.checkStateAndTriggered();
sim.processAction();
// second damage step
if (sim.getPermanent(simBlocker.getId()) != null && sim.getPermanent(simAttacker.getId()) != null) {
simulateCombatDamage(sim, simBlocker, simAttacker, false);
simulateCombatDamage(sim, simAttacker, simBlocker, false);
simAttacker.applyDamage(sim);
simBlocker.applyDamage(sim);
sim.checkStateAndTriggered();
sim.processAction();
}
/* old manual PT compare
if (attacker.getPower().getValue() >= blocker.getToughness().getValue()) {
sim.getBattlefield().removePermanent(blocker.getId());
}
if (attacker.getToughness().getValue() <= blocker.getPower().getValue()) {
sim.getBattlefield().removePermanent(attacker.getId());
}
*/
// fake non-block simulation
simNonBlocking.getPlayer(defendingPlayerId).damage(
@ -356,6 +384,7 @@ public final class CombatUtil {
true,
true
);
simNonBlocking.checkStateAndTriggered();
simNonBlocking.processAction();
int endBlockingScore = GameStateEvaluator2.evaluate(defendingPlayerId, sim, false).getTotalScore();
@ -368,6 +397,15 @@ public final class CombatUtil {
);
}
private static void simulateCombatDamage(Game sim, Permanent fromCreature, Permanent toCreature, boolean isFirstDamageStep) {
Ability fakeAbility = new SimpleStaticAbility(null);
if (CombatGroup.dealsDamageThisStep(fromCreature, isFirstDamageStep, sim)) {
fakeAbility.setSourceId(fromCreature.getId());
fakeAbility.setControllerId(fromCreature.getControllerId());
toCreature.damage(fromCreature.getPower().getValue(), fromCreature.getId(), fakeAbility, sim, true, true);
}
}
private static void simulateStep(Game sim, Step step) {
sim.getPhase().setStep(step);
if (!step.skipStep(sim, sim.getActivePlayerId())) {