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- Cleanup and Updates in ComputerUtil_Attack2 (AI will not waste attacks against creatures with wither or infect).

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jendave
2011-08-06 20:40:12 +00:00
parent 040ed301f7
commit ed4776c084
1 changed files with 25 additions and 35 deletions
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60
src/forge/ComputerUtil_Attack2.java
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@@ -20,7 +20,7 @@ public class ComputerUtil_Attack2 {
private CardList humanList; //holds human player creatures private CardList humanList; //holds human player creatures
private CardList computerList;//holds computer creatures private CardList computerList;//holds computer creatures
private int aiAggression = 0; // added by me, how aggressive the ai attack will be depending on circumstances private int aiAggression = 0; // added by Masher, how aggressive the ai attack will be depending on circumstances
public ComputerUtil_Attack2(Card[] possibleAttackers, Card[] possibleBlockers, int blockerLife) public ComputerUtil_Attack2(Card[] possibleAttackers, Card[] possibleBlockers, int blockerLife)
{ {
@@ -332,7 +332,7 @@ public class ComputerUtil_Attack2 {
boolean isUnblockableCreature = true; boolean isUnblockableCreature = true;
// check blockers individually, as the bulk canBeBlocked doesn't check all circumstances // check blockers individually, as the bulk canBeBlocked doesn't check all circumstances
for(Card blocker:blockers){ for(Card blocker:blockers){
if(!blocker.isTapped() && CombatUtil.canBlock(attacker, blocker)){ if(CombatUtil.canBlock(attacker, blocker)){
isUnblockableCreature = false; isUnblockableCreature = false;
} }
} }
@@ -352,18 +352,18 @@ public class ComputerUtil_Attack2 {
aiAggression = 5; // attack at all costs aiAggression = 5; // attack at all costs
}else if((playerLifeToDamageRatio < 2 && ratioDiff >= 0) || ratioDiff > 3 || (ratioDiff > 0 && outNumber > 0)){ }else if((playerLifeToDamageRatio < 2 && ratioDiff >= 0) || ratioDiff > 3 || (ratioDiff > 0 && outNumber > 0)){
aiAggression = 3; // attack expecting to kill creatures or damage player. aiAggression = 3; // attack expecting to kill creatures or damage player.
} else if(ratioDiff >= 0 || ratioDiff + outNumber >= -1){ // at 0 ratio expect to potentially gain an advantage by attacking first }else if(ratioDiff >= 0 || ratioDiff + outNumber >= -1){ // at 0 ratio expect to potentially gain an advantage by attacking first
// if the ai has a slight advantage // if the ai has a slight advantage
// or the ai has a significant advantage numerically but only a slight disadvantage damage/life // or the ai has a significant advantage numerically but only a slight disadvantage damage/life
aiAggression = 2; // attack expecting to destroy creatures/be unblockable aiAggression = 2; // attack expecting to destroy creatures/be unblockable
}else if(doUnblockableAttack || ((ratioDiff * -1) < turnsUntilDeathByUnblockable)){
aiAggression = 4; // look for unblockable creatures that might be able to attack for a bit of
// fatal damage even if the player is significantly better
}else if(ratioDiff < 0 && aiLifeToPlayerDamageRatio > 1){ }else if(ratioDiff < 0 && aiLifeToPlayerDamageRatio > 1){
// the player is overmatched but there are a few turns before death // the player is overmatched but there are a few turns before death
aiAggression = 2; // attack expecting to destroy creatures/be unblockable aiAggression = 2; // attack expecting to destroy creatures/be unblockable
}else if(doUnblockableAttack || ((ratioDiff * -1) < turnsUntilDeathByUnblockable)){
aiAggression = 1; // look for unblockable creatures that might be able to attack for a bit of
// fatal damage even if the player is significantly better
}else if(ratioDiff < 0){ }else if(ratioDiff < 0){
aiAggression = 1; aiAggression = 0;
} // stay at home to block } // stay at home to block
System.out.println(String.valueOf(aiAggression) + " = ai aggression"); System.out.println(String.valueOf(aiAggression) + " = ai aggression");
@@ -457,19 +457,11 @@ public class ComputerUtil_Attack2 {
public boolean shouldAttack(Card attacker, CardList defenders, Combat combat) public boolean shouldAttack(Card attacker, CardList defenders, Combat combat)
{ {
boolean canBeKilledByOne = false; boolean canBeKilledByOne = false; // indicates if the attacker can be killed by a single blockers
boolean canKillOne = false; boolean canKillAll = true; // indicates if the attacker can kill all single blockers
boolean canKillAllDangerous = true; // indicates if the attacker can kill all creatures that are currently capable of dealing damage to it or the player boolean canKillAllDangerous = true; // indicates if the attacker can kill all single blockers with wither or infect
boolean isWorthLessThanAllKillers = true; boolean isWorthLessThanAllKillers = true;
CardList blockers = new CardList(); //all creatures that can block the attacker
CardList killingBlockers = new CardList(); //all creatures that can kill the attacker alone
boolean canBeBlocked = false; boolean canBeBlocked = false;
boolean canCauseDamage = true;
// ensure that this attacker can actually cause some damage
if(attacker.getNetCombatDamage() <= 0){
canCauseDamage = false;
}
// look at the attacker in relation to the blockers to establish a number of factors about the attacking // look at the attacker in relation to the blockers to establish a number of factors about the attacking
// context that will be relevant to the attackers decision according to the selected strategy // context that will be relevant to the attackers decision according to the selected strategy
@@ -478,7 +470,6 @@ public class ComputerUtil_Attack2 {
canBeBlocked = true; canBeBlocked = true;
if(CombatUtil.canDestroyAttacker(attacker, defender)) { if(CombatUtil.canDestroyAttacker(attacker, defender)) {
canBeKilledByOne = true; // there is a single creature on the battlefield that can kill the creature canBeKilledByOne = true; // there is a single creature on the battlefield that can kill the creature
killingBlockers.add(defender);
// see if the defending creature is of higher or lower value. We don't want to attack only to lose value // see if the defending creature is of higher or lower value. We don't want to attack only to lose value
if(CardFactoryUtil.evaluateCreature(defender) <= CardFactoryUtil.evaluateCreature(attacker)){ if(CardFactoryUtil.evaluateCreature(defender) <= CardFactoryUtil.evaluateCreature(attacker)){
isWorthLessThanAllKillers = false; isWorthLessThanAllKillers = false;
@@ -486,20 +477,16 @@ public class ComputerUtil_Attack2 {
} }
// see if this attacking creature can destroy this defender, if not record that it can't kill everything // see if this attacking creature can destroy this defender, if not record that it can't kill everything
if(!CombatUtil.canDestroyBlocker(defender, attacker)){ if(!CombatUtil.canDestroyBlocker(defender, attacker)){
// make exception for walls, they are usually extra tough but not dangerous unless they have canKillAll = false;
// high power, so check for walls that can kill but ignore others if(defender.getKeyword().contains("Wither") || defender.getKeyword().contains("Infect")){
if(!(defender.isWall() && defender.getNetCombatDamage() <= 0)){
canKillAllDangerous = false; // there is a dangerous creature that can survive an attack from this creature canKillAllDangerous = false; // there is a dangerous creature that can survive an attack from this creature
} }
} else {
canKillOne = true; // there is at least one opposition creature on the battlefield the creature can kill
} }
blockers.add(defender);
} }
} }
// if the creature cannot block and can kill all opponents they might as well attack, they do nothing staying back // if the creature cannot block and can kill all opponents they might as well attack, they do nothing staying back
if(canKillAllDangerous && !CombatUtil.canBlock(attacker) && isWorthLessThanAllKillers){ if(canKillAll && !CombatUtil.canBlock(attacker) && isWorthLessThanAllKillers){
System.out.println(attacker.getName() + " = attacking because they can't block, expecting to kill or damage player"); System.out.println(attacker.getName() + " = attacking because they can't block, expecting to kill or damage player");
return true; return true;
} }
@@ -507,25 +494,28 @@ public class ComputerUtil_Attack2 {
// decide if the creature should attack based on the prevailing strategy choice in aiAggression // decide if the creature should attack based on the prevailing strategy choice in aiAggression
switch(aiAggression){ switch(aiAggression){
case 5: // all out attacking case 5: // all out attacking
if(canCauseDamage){
System.out.println(attacker.getName() + " = all out attacking"); System.out.println(attacker.getName() + " = all out attacking");
return true; return true;
} case 4: // expecting to at least trade with something
case 4: // unblockable creatures only if(canKillAll || (canKillAllDangerous && !canBeKilledByOne) || !canBeBlocked){
if(!canBeBlocked && canCauseDamage){ System.out.println(attacker.getName() + " = attacking expecting to at least trade with something");
System.out.println(attacker.getName() + " = attacking expecting not to be blocked");
return true; return true;
} }
case 3: // expecting to at least kill a creature of equal value, not be blocked or to attract a group block. A standard attacking strategy case 3: // expecting to at least kill a creature of equal value, not be blocked
if(((canKillAllDangerous && isWorthLessThanAllKillers) || !canBeBlocked || !canBeKilledByOne) && canCauseDamage){ if((canKillAll && isWorthLessThanAllKillers) || (canKillAllDangerous && !canBeKilledByOne) || !canBeBlocked){
System.out.println(attacker.getName() + " = attacking expecting to kill creature or cause damage, or is unblockable"); System.out.println(attacker.getName() + " = attacking expecting to kill creature or cause damage, or is unblockable");
return true; return true;
} }
case 2: // attack expecting to attract even a group block or destroying single blockers and surviving case 2: // attack expecting to attract a group block or destroying a single blocker and surviving
if(((canKillAllDangerous && !canBeKilledByOne) || !canBeBlocked) && canCauseDamage){ if((canKillAll && !canBeKilledByOne) || !canBeBlocked){
System.out.println(attacker.getName() + " = attacking expecting to survive or attract group block"); System.out.println(attacker.getName() + " = attacking expecting to survive or attract group block");
return true; return true;
} }
case 1: // unblockable creatures only
if(!canBeBlocked){
System.out.println(attacker.getName() + " = attacking expecting not to be blocked");
return true;
}
} }
return false; // don't attack return false; // don't attack
} }