/**
* Returns change in battle strength if unit at region switches places with neighbor.
*
* @param region
* @param neighbor
* @param includeNeighborStrengthChange true if change in neighbor strength should be included
* @return
*/
private static float getBattleStrengthChange(
Region region, Neighbor neighbor, boolean includeNeighborStrengthChange) {
// get current strengths of region, neighbor
float regionStrength = RegionUtils.getRegionBattleStrength(region);
float neighborStrength = RegionUtils.getRegionBattleStrength(neighbor.region);
// swap units, see change in strengths
Unit tempUnit = region.unit;
region.unit = neighbor.region.unit;
neighbor.region.unit = tempUnit;
Player tempPlayer = region.player;
region.player = neighbor.region.player;
neighbor.region.player = tempPlayer;
float regionMoveStrength = RegionUtils.getRegionBattleStrength(region);
float neighborMoveStrength = RegionUtils.getRegionBattleStrength(neighbor.region);
// put units back
tempUnit = region.unit;
region.unit = neighbor.region.unit;
neighbor.region.unit = tempUnit;
tempPlayer = region.player;
region.player = neighbor.region.player;
neighbor.region.player = tempPlayer;
if (includeNeighborStrengthChange) {
return (regionMoveStrength + neighborMoveStrength - regionStrength - neighborStrength + 2)
/ 4;
} else {
return (regionMoveStrength - regionStrength + 1) / 2;
}
}
/**
* Returns change in island strength for given reinforcement
*
* @param region
* @param reinforcementType
* @param player
* @return
*/
private static float getIslandStrengthChange(
Region region, ReinforcementType reinforcementType, Player player) {
float regionUnitHealth = -1f;
float regionIslandStrength = RegionUtils.getIslandStrength(region.island, player);
// add reinforcement, see change in island strength
if (reinforcementType.unitType != null) {
region.unit = new Unit(reinforcementType.unitType, Unit.MAX_HEALTH);
} else {
regionUnitHealth = region.unit.health;
region.unit.health = Unit.MAX_HEALTH;
}
float regionIslandReinforcementStrength = RegionUtils.getIslandStrength(region.island, player);
// remove reinforcement
if (reinforcementType.unitType != null) {
region.unit = null;
} else {
region.unit.health = regionUnitHealth;
}
return (regionIslandReinforcementStrength - regionIslandStrength)
/ regionIslandReinforcementStrength;
}
/**
* Returns likelihood that region could defeat neighboring regions.
*
* @param region
* @return
*/
protected static Map<Region, Float> checkAttacks(Region region) {
Map<Region, Float> result = new HashMap<Region, Float>();
for (Neighbor neighbor : region.neighbors) {
// check if region can be attacked
if (RegionUtils.canAttack(region, neighbor)) {
float[] battleDamage = BattleUtils.calculateBattleDamage(region, neighbor.region, 0);
result.put(neighbor.region, battleDamage[0] - battleDamage[1]);
}
}
return result;
}
/**
* Returns changes in region strengths for each possible move.
*
* @param region
* @return
*/
protected static Map<Neighbor, Float> checkMoves(Region region) {
Map<Neighbor, Float> result = new HashMap<Neighbor, Float>();
for (Neighbor neighbor : region.neighbors) {
// check if neighbor can be moved to
if (RegionUtils.canMove(region, neighbor)) {
// get current strengths of region, neighbor
float regionStrength = RegionUtils.getRegionBattleStrength(region);
float neighborStrength = RegionUtils.getRegionBattleStrength(neighbor.region);
// swap units, see change in strengths
Unit tempUnit = region.unit;
region.unit = neighbor.region.unit;
neighbor.region.unit = tempUnit;
Player tempPlayer = region.player;
region.player = neighbor.region.player;
neighbor.region.player = tempPlayer;
float regionMoveStrength = RegionUtils.getRegionBattleStrength(region);
float neighborMoveStrength = RegionUtils.getRegionBattleStrength(neighbor.region);
// put units back
tempUnit = region.unit;
region.unit = neighbor.region.unit;
neighbor.region.unit = tempUnit;
tempPlayer = region.player;
region.player = neighbor.region.player;
neighbor.region.player = tempPlayer;
result.put(
neighbor,
regionMoveStrength + neighborMoveStrength - regionStrength - neighborStrength);
}
}
return result;
}
/**
* Returns best reinforcement for given region.
*
* @param region
* @return
*/
protected static ReinforcementType getBestReinforcement(Region region) {
ReinforcementType result = new ReinforcementType();
// existing unit
if (region.unit != null) {
float originalRegionHealth = region.unit.health;
float originalBattleStrength = RegionUtils.getRegionBattleStrength(region);
// simulate max health
region.unit.health = Unit.MAX_HEALTH;
result.strengthChange = RegionUtils.getRegionBattleStrength(region) - originalBattleStrength;
region.unit.health = originalRegionHealth;
}
// new unit
else {
// get optimal unit type
// check each possible unit type
for (Unit.Type unitType : Unit.Type.values()) {
region.unit = new Unit(unitType, Unit.MAX_HEALTH);
float regionBattleStrength = RegionUtils.getRegionBattleStrength(region);
if (result.unitType == null || regionBattleStrength > result.strengthChange) {
result.strengthChange = regionBattleStrength;
result.unitType = unitType;
}
}
// reset region to have no unit
region.unit = null;
}
return result;
}
/**
* Returns random move (attack or move).
*
* @param overworld overworld
* @param player player
* @param forceAttack true if we want to force an attack if possible
* @param forceMove true if we want to force a move if possible
* @param types types of moves allowed (attack or move)
* @return random move
*/
protected static Move getRandomMove(
Overworld overworld,
Player player,
boolean forceAttack,
boolean forceMove,
Move.Type... types) {
List<Region> regions = PlayerUtils.getPlayerRegions(overworld, player, false);
// check possible moves
boolean allowAttack = false;
boolean allowMove = false;
for (Move.Type type : types) {
switch (type) {
case ATTACK:
allowAttack = true;
break;
case MOVE:
allowMove = true;
break;
}
}
// choose random region to take action with
int regionIndex = Utils.random().nextInt(regions.size());
int regionStartIndex = regionIndex;
// check if region can take action
// get regions to attack
List<Region> attackRegions = RegionUtils.getAttacks(regions.get(regionIndex));
List<Region> moveRegions = RegionUtils.getMoves(regions.get(regionIndex));
// if region can't attack or move, check other regions if we force an attack or move
while ((allowAttack && forceAttack && attackRegions.size() == 0)
|| (allowMove && forceMove && moveRegions.size() == 0)) {
regionIndex++;
if (regionIndex >= regions.size()) {
regionIndex = 0;
}
// exit loop if we've checked all regions
if (regionIndex == regionStartIndex) {
break;
}
attackRegions = RegionUtils.getAttacks(regions.get(regionIndex));
moveRegions = RegionUtils.getMoves(regions.get(regionIndex));
}
// region to attack
if (allowAttack && attackRegions.size() > 0) {
// choose random region to attack
Region attackRegion = attackRegions.get(Utils.random().nextInt(attackRegions.size()));
return new Move(Move.Type.ATTACK, regions.get(regionIndex), attackRegion);
} else if (allowMove && moveRegions.size() > 0) {
// choose random region to move to
Region moveRegion = moveRegions.get(Utils.random().nextInt(moveRegions.size()));
return new Move(Move.Type.MOVE, regions.get(regionIndex), moveRegion);
}
return new Move(Move.Type.END_PHASE);
}
/**
* Returns collection of moves for given score factor, ordered by descending score.
*
* @param overworld
* @param player
* @param scoreThreshold
* @param scoreFactor
* @return
*/
protected static Collection<Move> getMoves(
Overworld overworld,
Player player,
ScoreFactor scoreThreshold,
ScoreFactor captureScoreThreshold,
ScoreFactor scoreFactor) {
Map<Float, Move> moves = new TreeMap<Float, Move>();
// go through each region
for (Region region : overworld.regions) {
if (region.player.equals(player) && region.unit != null && region.unit.hasMove) {
// go through each neighbor
for (Neighbor neighbor : region.neighbors) {
if (RegionUtils.canMove(region, neighbor)) {
ScoreFactor score = new ScoreFactor();
float scoreValue = 0;
boolean aboveThreshold = true;
// get each score type
for (ScoreFactor.Type type : ScoreFactor.Type.values()) {
if (scoreThreshold.usesType(type) || scoreFactor.usesType(type)) {
switch (type) {
case BATTLE_STRENGTH_CHANGE:
score.addFactor(type, getBattleStrengthChange(region, neighbor, true));
break;
case ISLAND_PERCENTAGE:
score.addFactor(type, RegionUtils.getIslandPercentage(region.island, player));
break;
case ISLAND_STRENGTH:
score.addFactor(type, RegionUtils.getIslandStrength(region.island, player));
break;
case RANDOM:
score.addFactor(type, Utils.random().nextFloat());
break;
case BATTLE_LIKELIHOOD:
case ISLAND_STRENGTH_CHANGE:
// ignore
break;
}
// check if score meets threshold
// capture threshold
if (!neighbor.region.player.equals(region.player) && neighbor.region.unit == null) {
if (captureScoreThreshold.usesType(type)) {
aboveThreshold &= score.getScore(type) >= captureScoreThreshold.getScore(type);
}
}
// regular move threshold
else {
if (scoreThreshold.usesType(type)) {
aboveThreshold &= score.getScore(type) >= scoreThreshold.getScore(type);
}
}
// update score value
if (scoreFactor.usesType(type)) {
scoreValue += score.getScore(type) * scoreFactor.getScore(type);
}
}
}
// score above threshold
if (aboveThreshold) {
moves.put(scoreValue, new Move(Move.Type.MOVE, region, neighbor.region));
System.out.println(
String.format("\tpossible move %f: %s", scoreValue, moves.get(scoreValue)));
System.out.println("\t\t" + score);
}
}
}
}
}
return moves.values();
}
/**
* Returns collection of reinforcements for given score factor, ordered by descending score.
*
* @param overworld
* @param player
* @param minScore
* @param scoreFactor
* @return
*/
protected static Collection<Move> getReinforcements(
Overworld overworld, Player player, ScoreFactor scoreThreshold, ScoreFactor scoreFactor) {
Map<Float, Move> reinforcements = new TreeMap<Float, Move>();
// go through each region
for (Region region : overworld.regions) {
if (region.player.equals(player)
&& (region.unit == null || region.unit.health < Unit.MAX_HEALTH)) {
// get optimal reinforcement type for region
ReinforcementType reinforcementType = getBestReinforcement(region);
ScoreFactor score = new ScoreFactor();
float scoreValue = 0;
boolean aboveThreshold = true;
// get each score type
for (ScoreFactor.Type type : ScoreFactor.Type.values()) {
if (scoreThreshold.usesType(type) || scoreFactor.usesType(type)) {
switch (type) {
case BATTLE_STRENGTH_CHANGE:
score.addFactor(type, reinforcementType.strengthChange);
break;
case ISLAND_PERCENTAGE:
score.addFactor(type, RegionUtils.getIslandPercentage(region.island, player));
break;
case ISLAND_STRENGTH:
score.addFactor(type, RegionUtils.getIslandStrength(region.island, player));
break;
case ISLAND_STRENGTH_CHANGE:
score.addFactor(type, getIslandStrengthChange(region, reinforcementType, player));
break;
case RANDOM:
score.addFactor(type, Utils.random().nextFloat());
break;
case BATTLE_LIKELIHOOD:
// ignore
break;
}
// check if score meets threshold
if (scoreThreshold.usesType(type)) {
aboveThreshold &= score.getScore(type) >= scoreThreshold.getScore(type);
}
// update score value
if (scoreFactor.usesType(type)) {
scoreValue += score.getScore(type) * scoreFactor.getScore(type);
}
}
}
// score above threshold
if (aboveThreshold) {
reinforcements.put(
scoreValue, new Move(Move.Type.REINFORCE, region, null, reinforcementType.unitType));
System.out.println(
String.format(
"\tpossible reinforcement %f: %s", scoreValue, reinforcements.get(scoreValue)));
System.out.println("\t\t" + score);
}
}
}
return reinforcements.values();
}
/**
* Returns collection of attacks for given score factor, ordered by descending score.
*
* @param overworld
* @param player
* @param scoreThreshold
* @param scoreFactor
* @return
*/
protected static Collection<Move> getAttacks(
Overworld overworld, Player player, ScoreFactor scoreThreshold, ScoreFactor scoreFactor) {
Map<Float, Move> attacks = new TreeMap<Float, Move>();
// go through each region
for (Region region : overworld.regions) {
if (region.player.equals(player) && region.unit != null && region.unit.hasAttack) {
// check each neighbor
for (Neighbor neighbor : region.neighbors) {
if (RegionUtils.canAttack(region, neighbor)) {
ScoreFactor score = new ScoreFactor();
float scoreValue = 0;
boolean aboveThreshold = true;
// get each score type
for (ScoreFactor.Type type : ScoreFactor.Type.values()) {
if (scoreThreshold.usesType(type) || scoreFactor.usesType(type)) {
switch (type) {
case BATTLE_STRENGTH_CHANGE:
if (neighbor.type != Neighbor.Type.RANGED) {
score.addFactor(type, getBattleStrengthChange(region, neighbor, false));
} else {
score.addFactor(type, 0.5f);
}
break;
case BATTLE_LIKELIHOOD:
score.addFactor(
type, BattleUtils.calculateBattleLikelihood(region, neighbor.region));
break;
case ISLAND_PERCENTAGE:
score.addFactor(type, RegionUtils.getIslandPercentage(region.island, player));
break;
case ISLAND_STRENGTH:
score.addFactor(type, RegionUtils.getIslandStrength(region.island, player));
break;
case RANDOM:
score.addFactor(type, Utils.random().nextFloat());
break;
case ISLAND_STRENGTH_CHANGE:
// ignore
break;
}
// check if score meets threshold
if (scoreThreshold.usesType(type)) {
aboveThreshold &= score.getScore(type) >= scoreThreshold.getScore(type);
}
// update score value
if (scoreFactor.usesType(type)) {
scoreValue += score.getScore(type) * scoreFactor.getScore(type);
}
}
}
// score above threshold
if (aboveThreshold) {
attacks.put(scoreValue, new Move(Move.Type.ATTACK, region, neighbor.region));
System.out.println(
String.format("\tpossible attack %f: %s", scoreValue, attacks.get(scoreValue)));
System.out.println("\t\t" + score);
}
}
}
}
}
return attacks.values();
}