/*
* Copyright 2010 BetaSteward_at_googlemail.com. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY BetaSteward_at_googlemail.com ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BetaSteward_at_googlemail.com OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of BetaSteward_at_googlemail.com.
*/
package mage.player.ai;
import mage.constants.PhaseStep;
import mage.constants.RangeOfInfluence;
import mage.game.Game;
import mage.game.combat.Combat;
import mage.game.combat.CombatGroup;
import mage.game.events.GameEvent;
import mage.game.turn.*;
import mage.players.Player;
import org.apache.log4j.Logger;
import java.util.LinkedList;
import java.util.List;
import java.util.UUID;
/**
*
* @author BetaSteward_at_googlemail.com
*/
public class ComputerPlayer3 extends ComputerPlayer2 implements Player {
private static final Logger logger = Logger.getLogger(ComputerPlayer3.class);
public ComputerPlayer3(String name, RangeOfInfluence range, int skill) {
super(name, range, skill);
}
public ComputerPlayer3(final ComputerPlayer3 player) {
super(player);
}
@Override
public ComputerPlayer3 copy() {
return new ComputerPlayer3(this);
}
@Override
public boolean priority(Game game) {
logState(game);
if (logger.isDebugEnabled())
logger.debug("Game State: Turn-" + game.getTurnNum() + " Step-" + game.getTurn().getStepType() + " ActivePlayer-" + game.getPlayer(game.getActivePlayerId()).getName() + " PriorityPlayer-" + name);
game.getState().setPriorityPlayerId(playerId);
game.firePriorityEvent(playerId);
switch (game.getTurn().getStepType()) {
case UPKEEP:
case DRAW:
pass(game);
return false;
case PRECOMBAT_MAIN:
if (game.getActivePlayerId().equals(playerId)) {
if (actions.isEmpty()) {
calculatePreCombatActions(game);
}
act(game);
return true;
}
else
pass(game);
return false;
case BEGIN_COMBAT:
pass(game);
return false;
case DECLARE_ATTACKERS:
if (!game.getActivePlayerId().equals(playerId)) {
if (actions.isEmpty()) {
calculatePreCombatActions(game);
}
act(game);
return true;
}
else
pass(game);
return false;
case DECLARE_BLOCKERS:
case FIRST_COMBAT_DAMAGE:
case COMBAT_DAMAGE:
case END_COMBAT:
pass(game);
return false;
case POSTCOMBAT_MAIN:
if (game.getActivePlayerId().equals(playerId)) {
if (actions.isEmpty()) {
calculatePostCombatActions(game);
}
act(game);
return true;
}
else
pass(game);
return false;
case END_TURN:
case CLEANUP:
pass(game);
return false;
}
return false;
}
protected void calculatePreCombatActions(Game game) {
if (!getNextAction(game)) {
currentScore = GameStateEvaluator.evaluate(playerId, game);
Game sim = createSimulation(game);
SimulationNode.resetCount();
root = new SimulationNode(null, sim, playerId);
logger.debug("simulating pre combat actions -----------------------------------------------------------------------------------------");
if (!isTestMode)
addActionsTimed();
else
addActions(root, Integer.MIN_VALUE, Integer.MAX_VALUE);
logger.info(name + " simulated " + nodeCount + " nodes in " + thinkTime/1000000000.0 + "s - average " + nodeCount/(thinkTime/1000000000.0) + " nodes/s");
if (!root.children.isEmpty()) {
root = root.children.get(0);
actions = new LinkedList<>(root.abilities);
combat = root.combat;
if (logger.isDebugEnabled())
logger.debug("adding pre-combat actions:" + actions);
}
else
logger.debug("no pre-combat actions added");
}
}
protected void calculatePostCombatActions(Game game) {
if (!getNextAction(game)) {
currentScore = GameStateEvaluator.evaluate(playerId, game);
Game sim = createSimulation(game);
SimulationNode.resetCount();
root = new SimulationNode(null, sim, playerId);
logger.debug("simulating post combat actions ----------------------------------------------------------------------------------------");
if (!isTestMode)
addActionsTimed();
else
addActions(root, Integer.MIN_VALUE, Integer.MAX_VALUE);
logger.info(name + " simulated " + nodeCount + " nodes in " + thinkTime/1000000000.0 + "s - average " + nodeCount/(thinkTime/1000000000.0) + " nodes/s");
if (!root.children.isEmpty()) {
root = root.children.get(0);
actions = new LinkedList<>(root.abilities);
combat = root.combat;
if (logger.isDebugEnabled())
logger.debug("adding post-combat actions:" + actions);
}
else
logger.debug("no post-combat actions added");
}
}
@Override
protected int addActions(SimulationNode node, int alpha, int beta) {
boolean stepFinished = false;
int val;
Game game = node.getGame();
if (Thread.interrupted()) {
Thread.currentThread().interrupt();
logger.debug(indent(node.depth) + "interrupted");
return GameStateEvaluator.evaluate(playerId, game);
}
if (node.depth > maxDepth || game.gameOver(null)) {
logger.debug(indent(node.depth) + "simulating -- reached end state");
val = GameStateEvaluator.evaluate(playerId, game);
}
else if (!node.getChildren().isEmpty()) {
logger.debug(indent(node.depth) + "simulating -- somthing added children:" + node.getChildren().size());
val = minimaxAB(node, alpha, beta);
}
else {
if (logger.isDebugEnabled())
logger.debug(indent(node.depth) + "simulating -- alpha: " + alpha + " beta: " + beta + " depth:" + node.depth + " step:" + game.getTurn().getStepType() + " for player:" + game.getPlayer(game.getPlayerList().get()).getName());
if (allPassed(game)) {
if (!game.getStack().isEmpty()) {
resolve(node, game);
}
else {
stepFinished = true;
}
}
if (game.gameOver(null)) {
val = GameStateEvaluator.evaluate(playerId, game);
}
else if (stepFinished) {
logger.debug(indent(node.depth) + "step finished");
int testScore = GameStateEvaluator.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(indent(node.depth) + "simulating -- abandoning check, no immediate benefit");
val = testScore;
}
else {
switch (game.getTurn().getStepType()) {
case PRECOMBAT_MAIN:
val = simulateCombat(game, node, alpha, beta, false);
break;
case POSTCOMBAT_MAIN:
val = simulateCounterAttack(game, node, alpha, beta);
break;
default:
val = GameStateEvaluator.evaluate(playerId, game);
break;
}
}
}
else {
if (game.getTurn().getStepType() == PhaseStep.DECLARE_ATTACKERS)
val = simulateBlockers(game, node, playerId, alpha, beta, true);
else
val = GameStateEvaluator.evaluate(playerId, game);
}
}
else if (!node.getChildren().isEmpty()) {
logger.debug(indent(node.depth) + "simulating -- trigger added children:" + node.getChildren().size());
val = minimaxAB(node, alpha, beta);
}
else {
val = simulatePriority(node, game, alpha, beta);
}
}
if (logger.isDebugEnabled())
logger.debug(indent(node.depth) + "returning -- score: " + val + " depth:" + node.depth + " step:" + game.getTurn().getStepType() + " for player:" + game.getPlayer(node.getPlayerId()).getName());
return val;
}
protected int simulateCombat(Game game, SimulationNode node, int alpha, int beta, boolean counter) {
Integer val = null;
if (Thread.interrupted()) {
Thread.currentThread().interrupt();
logger.debug(indent(node.depth) + "interrupted");
return GameStateEvaluator.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(), alpha, beta, counter);
}
}
else if (!counter) {
val = simulatePostCombatMain(game, node, 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(), alpha, beta, counter);
}
}
else if (!counter) {
finishCombat(game);
val = simulateCounterAttack(game, node, alpha, beta);
}
}
if (val == null)
val = GameStateEvaluator.evaluate(playerId, game);
if (logger.isDebugEnabled())
logger.debug(indent(node.depth) + "returning -- combat score: " + val + " depth:" + node.depth + " for player:" + game.getPlayer(node.getPlayerId()).getName());
return val;
}
protected int simulateAttackers(Game game, SimulationNode node, UUID attackerId, int alpha, int beta, boolean counter) {
if (Thread.interrupted()) {
Thread.currentThread().interrupt();
logger.debug(indent(node.depth) + "interrupted");
return GameStateEvaluator.evaluate(playerId, game);
}
Integer val = null;
SimulationNode bestNode = null;
SimulatedPlayer attacker = (SimulatedPlayer) game.getPlayer(attackerId);
UUID defenderId = game.getOpponents(attackerId).iterator().next();
if (logger.isDebugEnabled()) {
logger.debug(indent(node.depth) + attacker.getName() + "'s possible attackers: " + attacker.getAvailableAttackers(defenderId, game));
}
List<Combat> engagements = attacker.addAttackers(game);
for (Combat engagement: engagements) {
if (alpha >= beta) {
logger.debug(indent(node.depth) + "simulating -- 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));
SimulationNode newNode = new SimulationNode(node, sim, attackerId);
if (logger.isDebugEnabled()) {
logger.debug(indent(node.depth) + "simulating attack for player:" + game.getPlayer(attackerId).getName());
}
sim.checkStateAndTriggered();
while (!sim.getStack().isEmpty()) {
sim.getStack().resolve(sim);
logger.debug(indent(node.depth) + "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, alpha, beta, counter);
if (!attackerId.equals(playerId)) {
if (val < beta) {
beta = val;
bestNode = newNode;
node.setCombat(simCombat);
}
}
else {
if (val > alpha) {
alpha = val;
bestNode = newNode;
node.setCombat(simCombat);
}
}
}
if (val == null) {
val = GameStateEvaluator.evaluate(playerId, game);
}
if (bestNode != null) {
node.children.clear();
node.children.add(bestNode);
}
if (logger.isDebugEnabled()) {
logger.debug(indent(node.depth) + "returning -- combat attacker score: " + val + " depth:" + node.depth + " for player:" + game.getPlayer(node.getPlayerId()).getName());
}
return val;
}
protected int simulateBlockers(Game game, SimulationNode node, UUID defenderId, int alpha, int beta, boolean counter) {
if (Thread.interrupted()) {
Thread.currentThread().interrupt();
logger.debug(indent(node.depth) + "interrupted");
return GameStateEvaluator.evaluate(playerId, game);
}
Integer val = null;
SimulationNode bestNode = null;
//check if defender is being attacked
if (game.getCombat().isAttacked(defenderId, game)) {
SimulatedPlayer defender = (SimulatedPlayer) game.getPlayer(defenderId);
if (logger.isDebugEnabled()) {
logger.debug(indent(node.depth) + defender.getName() + "'s possible blockers: " + defender.getAvailableBlockers(game));
}
for (Combat engagement: defender.addBlockers(game)) {
if (alpha >= beta) {
logger.debug(indent(node.depth) + "simulating -- pruning blockers");
break;
}
Game sim = game.copy();
for (CombatGroup group: engagement.getGroups()) {
if (!group.getAttackers().isEmpty()) {
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));
SimulationNode newNode = new SimulationNode(node, sim, defenderId);
if (logger.isDebugEnabled()) {
logger.debug(indent(node.depth) + "simulating block for player:" + game.getPlayer(defenderId).getName());
}
sim.checkStateAndTriggered();
while (!sim.getStack().isEmpty()) {
sim.getStack().resolve(sim);
logger.debug(indent(node.depth) + "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 = GameStateEvaluator.evaluate(playerId, sim);
}
else if (!counter) {
val = simulatePostCombatMain(sim, newNode, alpha, beta);
}
else
val = GameStateEvaluator.evaluate(playerId, sim);
if (!defenderId.equals(playerId)) {
if (val < beta) {
beta = val;
bestNode = newNode;
node.setCombat(simCombat);
}
}
else {
if (val > alpha) {
alpha = val;
bestNode = newNode;
node.setCombat(simCombat);
}
}
}
}
if (val == null)
val = GameStateEvaluator.evaluate(playerId, game);
if (bestNode != null) {
node.children.clear();
node.children.add(bestNode);
}
if (logger.isDebugEnabled())
logger.debug(indent(node.depth) + "returning -- combat blocker score: " + val + " depth:" + node.depth + " for player:" + game.getPlayer(node.getPlayerId()).getName());
return val;
}
protected int simulateCounterAttack(Game game, SimulationNode node, int alpha, int beta) {
if (Thread.interrupted()) {
Thread.currentThread().interrupt();
logger.debug(indent(node.depth) + "interrupted");
return GameStateEvaluator.evaluate(playerId, game);
}
Integer val = null;
if (!game.gameOver(null)) {
logger.debug(indent(node.depth) + "simulating -- ending turn");
simulateToEnd(game);
game.getState().setActivePlayerId(game.getState().getPlayerList(game.getActivePlayerId()).getNext());
logger.debug(indent(node.depth) + "simulating -- counter attack for player " + game.getPlayer(game.getActivePlayerId()).getName());
game.getTurn().setPhase(new BeginningPhase());
if (game.getPhase().beginPhase(game, game.getActivePlayerId())) {
simulateStep(game, new UntapStep());
simulateStep(game, new UpkeepStep());
simulateStep(game, new DrawStep());
game.getPhase().endPhase(game, game.getActivePlayerId());
}
//TODO: calculate opponent actions before combat
val = simulateCombat(game, node, alpha, beta, true);
if (logger.isDebugEnabled())
logger.debug(indent(node.depth) + "returning -- counter attack score: " + val + " depth:" + node.depth + " for player:" + game.getPlayer(node.getPlayerId()).getName());
}
if (val == null)
val = GameStateEvaluator.evaluate(playerId, game);
return val;
}
protected void simulateStep(Game game, Step step) {
if (Thread.interrupted()) {
Thread.currentThread().interrupt();
logger.debug("interrupted");
return;
}
if (!game.gameOver(null)) {
game.getPhase().setStep(step);
if (!step.skipStep(game, game.getActivePlayerId())) {
step.beginStep(game, game.getActivePlayerId());
game.checkStateAndTriggered();
while (!game.getStack().isEmpty()) {
game.getStack().resolve(game);
game.applyEffects();
}
step.endStep(game, game.getActivePlayerId());
}
}
}
protected void finishCombat(Game game) {
if (Thread.interrupted()) {
Thread.currentThread().interrupt();
logger.debug("interrupted");
return;
}
simulateStep(game, new FirstCombatDamageStep());
simulateStep(game, new CombatDamageStep());
simulateStep(game, new EndOfCombatStep());
}
protected int simulatePostCombatMain(Game game, SimulationNode node, int alpha, int beta) {
if (Thread.interrupted()) {
Thread.currentThread().interrupt();
logger.debug(indent(node.depth) + "interrupted");
return GameStateEvaluator.evaluate(playerId, game);
}
logger.debug(indent(node.depth) + "simulating -- post combat main");
game.getTurn().setPhase(new PostCombatMainPhase());
if (game.getPhase().beginPhase(game, game.getActivePlayerId())) {
game.getPhase().setStep(new PostCombatMainStep());
game.getStep().beginStep(game, playerId);
game.getPlayers().resetPassed();
return addActions(node, alpha, beta);
}
return simulateCounterAttack(game, node, alpha, beta);
}
protected void simulateToEnd(Game game) {
if (Thread.interrupted()) {
Thread.currentThread().interrupt();
logger.debug("interrupted");
return;
}
if (!game.gameOver(null)) {
game.getTurn().getPhase().endPhase(game, game.getActivePlayerId());
game.getTurn().setPhase(new EndPhase());
if (game.getTurn().getPhase().beginPhase(game, game.getActivePlayerId())) {
simulateStep(game, new EndStep());
simulateStep(game, new CleanupStep());
}
}
}
}