protected int simulateBlockers(
Game game,
SimulationNode2 node,
UUID defenderId,
int depth,
int alpha,
int beta,
boolean counter) {
if (ALLOW_INTERRUPT && Thread.interrupted()) {
Thread.currentThread().interrupt();
logger.debug("interrupted");
return GameStateEvaluator2.evaluate(playerId, game);
}
Integer val = null;
SimulationNode2 bestNode = null;
// check if defender is being attacked
if (game.getCombat().isAttacked(defenderId, game)) {
SimulatedPlayer2 defender = (SimulatedPlayer2) game.getPlayer(defenderId);
if (logger.isDebugEnabled()) {
logger.debug(
defender.getName() + "'s possible blockers: " + defender.getAvailableBlockers(game));
}
List<Combat> combats = defender.addBlockers(game);
for (Combat engagement : combats) {
if (alpha >= beta) {
logger.debug("Sim blockers -- pruning blockers");
break;
}
Game sim = game.copy();
for (CombatGroup group : engagement.getGroups()) {
if (group.getAttackers().size() > 0) {
UUID attackerId = group.getAttackers().get(0);
for (UUID blockerId : group.getBlockers()) {
sim.getPlayer(defenderId).declareBlocker(defenderId, blockerId, attackerId, sim);
}
}
}
sim.fireEvent(
GameEvent.getEvent(GameEvent.EventType.DECLARED_BLOCKERS, defenderId, defenderId));
SimulationNode2 newNode = new SimulationNode2(node, sim, depth, defenderId);
if (logger.isDebugEnabled()) {
logger.debug("Sim block for player:" + game.getPlayer(defenderId).getName());
}
sim.checkStateAndTriggered();
while (!sim.getStack().isEmpty()) {
sim.getStack().resolve(sim);
logger.debug("Sim blockers: resolving triggered abilities");
sim.applyEffects();
}
sim.fireEvent(
GameEvent.getEvent(
GameEvent.EventType.DECLARE_BLOCKERS_STEP_POST,
sim.getActivePlayerId(),
sim.getActivePlayerId()));
Combat simCombat = sim.getCombat().copy();
finishCombat(sim);
if (sim.gameOver(null)) {
val = GameStateEvaluator2.evaluate(playerId, sim);
} else if (!counter) {
val = simulatePostCombatMain(sim, newNode, depth - 1, alpha, beta);
} else {
val = GameStateEvaluator2.evaluate(playerId, sim);
}
if (!defenderId.equals(playerId)) {
if (val < beta) {
beta = val;
bestNode = newNode;
bestNode.setScore(val);
bestNode.setCombat(simCombat);
}
} else {
if (val > alpha) {
alpha = val;
bestNode = newNode;
bestNode.setScore(val);
bestNode.setCombat(simCombat);
}
}
}
}
if (val == null) {
val = GameStateEvaluator2.evaluate(playerId, game);
}
if (bestNode != null) {
node.children.clear();
node.children.add(bestNode);
node.setScore(bestNode.getScore());
}
if (logger.isDebugEnabled()) {
logger.debug(
"Sim blockers: returning score: "
+ val
+ " depth:"
+ depth
+ " for player:"
+ game.getPlayer(node.getPlayerId()).getName());
}
return val;
}
protected int simulateCombat(
Game game, SimulationNode2 node, int depth, int alpha, int beta, boolean counter) {
Integer val = null;
if (ALLOW_INTERRUPT && Thread.interrupted()) {
Thread.currentThread().interrupt();
logger.debug("interrupted");
return GameStateEvaluator2.evaluate(playerId, game);
}
if (game.getTurn().getStepType() != PhaseStep.DECLARE_BLOCKERS) {
game.getTurn().setPhase(new CombatPhase());
if (game.getPhase().beginPhase(game, game.getActivePlayerId())) {
simulateStep(game, new BeginCombatStep());
game.getPhase().setStep(new DeclareAttackersStep());
if (!game.getStep().skipStep(game, game.getActivePlayerId())) {
game.fireEvent(
new GameEvent(
GameEvent.EventType.DECLARE_ATTACKERS_STEP_PRE,
null,
null,
game.getActivePlayerId()));
if (!game.replaceEvent(
GameEvent.getEvent(
GameEvent.EventType.DECLARING_ATTACKERS,
game.getActivePlayerId(),
game.getActivePlayerId()))) {
val =
simulateAttackers(
game, node, game.getActivePlayerId(), depth, alpha, beta, counter);
}
} else if (!counter) {
simulateToEnd(game);
val = simulatePostCombatMain(game, node, depth, alpha, beta);
}
}
} else {
if (!game.getStep().skipStep(game, game.getActivePlayerId())) {
game.fireEvent(
new GameEvent(
GameEvent.EventType.DECLARE_BLOCKERS_STEP_PRE,
null,
null,
game.getActivePlayerId()));
if (!game.replaceEvent(
GameEvent.getEvent(
GameEvent.EventType.DECLARING_BLOCKERS,
game.getActivePlayerId(),
game.getActivePlayerId()))) {
// only suitable for two player games - only simulates blocks for 1st defender
val =
simulateBlockers(
game,
node,
game.getCombat().getDefenders().iterator().next(),
depth,
alpha,
beta,
counter);
}
} else if (!counter) {
finishCombat(game);
/// val = simulateCounterAttack(game, node, depth, alpha, beta);
}
}
if (val == null) {
val = GameStateEvaluator2.evaluate(playerId, game);
}
if (logger.isDebugEnabled()) {
logger.debug(
"returning -- combat score: "
+ val
+ " depth:"
+ depth
+ " for player:"
+ game.getPlayer(node.getPlayerId()).getName());
}
return val;
}
protected int simulateAttackers(
Game game,
SimulationNode2 node,
UUID attackerId,
int depth,
int alpha,
int beta,
boolean counter) {
if (ALLOW_INTERRUPT && Thread.interrupted()) {
Thread.currentThread().interrupt();
logger.debug("interrupted");
return GameStateEvaluator2.evaluate(playerId, game);
}
Integer val = null;
SimulationNode2 bestNode = null;
SimulatedPlayer2 attacker = (SimulatedPlayer2) game.getPlayer(attackerId);
UUID defenderId = game.getOpponents(attackerId).iterator().next();
if (logger.isDebugEnabled()) {
logger.debug(
attacker.getName()
+ "'s possible attackers: "
+ attacker.getAvailableAttackers(defenderId, game));
}
for (Combat engagement : attacker.addAttackers(game)) {
if (logger.isDebugEnabled()) {
logger.debug(
"Sim Attackers: "
+ engagement.getAttackers()
+ ", blockers: "
+ engagement.getBlockers());
}
if (alpha >= beta) {
logger.debug("Sim Attackers -- pruning attackers");
break;
}
Game sim = game.copy();
for (CombatGroup group : engagement.getGroups()) {
for (UUID attackId : group.getAttackers()) {
sim.getPlayer(attackerId).declareAttacker(attackId, defenderId, sim, false);
}
}
sim.fireEvent(
GameEvent.getEvent(GameEvent.EventType.DECLARED_ATTACKERS, attackerId, attackerId));
SimulationNode2 newNode = new SimulationNode2(node, sim, depth, attackerId);
if (logger.isDebugEnabled()) {
logger.debug("Sim attack for player:" + game.getPlayer(attackerId).getName());
}
sim.checkStateAndTriggered();
while (!sim.getStack().isEmpty()) {
sim.getStack().resolve(sim);
logger.debug("Sim attack: resolving triggered abilities");
sim.applyEffects();
}
sim.fireEvent(
GameEvent.getEvent(
GameEvent.EventType.DECLARE_ATTACKERS_STEP_POST,
sim.getActivePlayerId(),
sim.getActivePlayerId()));
Combat simCombat = sim.getCombat().copy();
sim.getPhase().setStep(new DeclareBlockersStep());
val = simulateCombat(sim, newNode, depth - 1, alpha, beta, counter);
if (!attackerId.equals(playerId)) {
if (val < beta) {
beta = val;
bestNode = newNode;
bestNode.setScore(val);
if (newNode.getChildren().size() > 0) {
bestNode.setCombat(newNode.getChildren().get(0).getCombat());
}
}
} else {
if (val > alpha) {
alpha = val;
bestNode = newNode;
bestNode.setScore(val);
if (newNode.getChildren().size() > 0) {
bestNode.setCombat(newNode.getChildren().get(0).getCombat());
}
}
}
}
if (val == null) {
val = GameStateEvaluator2.evaluate(playerId, game);
}
if (bestNode != null) {
node.children.clear();
node.children.add(bestNode);
node.setScore(bestNode.getScore());
}
if (logger.isDebugEnabled()) {
logger.debug(
"Sim attackers: returning score: "
+ val
+ " depth:"
+ depth
+ " for player:"
+ game.getPlayer(node.getPlayerId()).getName());
}
return val;
}
@Override
protected int addActions(SimulationNode2 node, int depth, int alpha, int beta) {
boolean stepFinished = false;
int val;
if (logger.isTraceEnabled()
&& node != null
&& node.getAbilities() != null
&& !node.getAbilities().toString().equals("[Pass]")) {
logger.trace(
"Add Action ["
+ depth
+ "] "
+ node.getAbilities().toString()
+ " a: "
+ alpha
+ " b: "
+ beta);
}
Game game = node.getGame();
if (ALLOW_INTERRUPT && Thread.interrupted()) {
Thread.currentThread().interrupt();
logger.debug("interrupted");
return GameStateEvaluator2.evaluate(playerId, game);
}
// Condition to stop deeper simulation
if (depth <= 0 || SimulationNode2.nodeCount > maxNodes || game.gameOver(null)) {
val = GameStateEvaluator2.evaluate(playerId, game);
if (logger.isTraceEnabled()) {
StringBuilder sb =
new StringBuilder("Add Actions -- reached end state <").append(val).append(">");
SimulationNode2 logNode = node;
do {
sb.append(
new StringBuilder(
" <- ["
+ logNode.getDepth()
+ "]"
+ (logNode.getAbilities() != null
? logNode.getAbilities().toString()
: "[empty]")));
logNode = logNode.getParent();
} while ((logNode.getParent() != null));
logger.trace(sb);
}
} else if (node.getChildren().size() > 0) {
if (logger.isDebugEnabled()) {
StringBuilder sb =
new StringBuilder("Add Action [")
.append(depth)
.append("] -- something added children ")
.append(node.getAbilities() != null ? node.getAbilities().toString() : "null")
.append(" added children: ")
.append(node.getChildren().size())
.append(" (");
for (SimulationNode2 logNode : node.getChildren()) {
sb.append(logNode.getAbilities() != null ? logNode.getAbilities().toString() : "null")
.append(", ");
}
sb.append(")");
logger.debug(sb);
}
val = minimaxAB(node, depth - 1, alpha, beta);
} else {
logger.trace(
"Add Action -- alpha: "
+ alpha
+ " beta: "
+ beta
+ " depth:"
+ depth
+ " step:"
+ game.getTurn().getStepType()
+ " for player:"
+ game.getPlayer(game.getPlayerList().get()).getName());
if (allPassed(game)) {
if (!game.getStack().isEmpty()) {
resolve(node, depth, game);
} else {
stepFinished = true;
}
}
if (game.gameOver(null)) {
val = GameStateEvaluator2.evaluate(playerId, game);
} else if (stepFinished) {
logger.debug("Step finished");
int testScore = GameStateEvaluator2.evaluate(playerId, game);
if (game.getActivePlayerId().equals(playerId)) {
if (testScore < currentScore) {
// if score at end of step is worse than original score don't check further
// logger.debug("Add Action -- abandoning check, no immediate benefit");
val = testScore;
} else {
/*switch (game.getTurn().getStepType()) {
case PRECOMBAT_MAIN:
val = simulateCombat(game, node, depth-1, alpha, beta, false);
break;
case POSTCOMBAT_MAIN:
val = simulateCounterAttack(game, node, depth-1, alpha, beta);
break;
default:
val = GameStateEvaluator2.evaluate(playerId, game);
break;
}*/
val = GameStateEvaluator2.evaluate(playerId, game);
}
} else {
val = GameStateEvaluator2.evaluate(playerId, game);
/*if (game.getTurn().getStepType() == PhaseStep.DECLARE_ATTACKERS)
val = simulateBlockers(game, node, playerId, depth-1, alpha, beta, true);
else
val = GameStateEvaluator2.evaluate(playerId, game);
*/
}
} else if (node.getChildren().size() > 0) {
if (logger.isDebugEnabled()) {
StringBuilder sb =
new StringBuilder("Add Action [")
.append(depth)
.append("] -- trigger ")
.append(node.getAbilities() != null ? node.getAbilities().toString() : "null")
.append(" added children: ")
.append(node.getChildren().size())
.append(" (");
for (SimulationNode2 logNode : node.getChildren()) {
sb.append(logNode.getAbilities() != null ? logNode.getAbilities().toString() : "null")
.append(", ");
}
sb.append(")");
logger.debug(sb);
}
val = minimaxAB(node, depth, alpha, beta);
} else {
val = simulatePriority(node, game, depth, alpha, beta);
}
}
node.setScore(val); // test
logger.trace(
"returning -- score: "
+ val
+ " depth:"
+ depth
+ " step:"
+ game.getTurn().getStepType()
+ " for player:"
+ game.getPlayer(node.getPlayerId()).getName());
return val;
}