public IBattleAction ResolveAction(BattleEntityManagerComponent entityManager, EnemyBattleEntity enemyEntity)
{
// for each skill, lets evaulate if we will use it
float totalWeight = 0;
List<AISkillResultSet> possibleSkills = new List<AISkillResultSet>();
foreach(AISkillComposite composite in mSkillComposites) {
SelectableTargetManager selectManager = SelectableTargetManager.CreateAllowedTargets(enemyEntity, entityManager, composite.skill);
HashSet<BattleEntity> targetSet = new HashSet<BattleEntity>();
foreach(SelectableTarget target in selectManager.targetList) {
foreach(BattleEntity entity in target.entities) {
targetSet.Add(entity);
}
}
// filter targets
composite.targetFilter.FilterEntities(enemyEntity, targetSet);
// filter condition
composite.conditionFilter.FilterEntities(enemyEntity, targetSet);
// if we still have targets, save, otherwise move on
if(targetSet.Count == 0) {
continue;
}
// lets save this and move on
totalWeight += composite.weight;
AISkillResultSet result = new AISkillResultSet();
result.possibleTargets = targetSet;
result.composite = composite;
result.selectManager = selectManager;
possibleSkills.Add(result);
}
if(possibleSkills.Count == 0) {
throw new Exception("We should make sure we set this a default skill, like attack");
}
// first, if we have no items or 1 item, just use that instead of randoming to our skill
if(possibleSkills.Count == 1) {
AISkillResultSet result = possibleSkills[0];
return GenerateBattleAction(enemyEntity, result, entityManager);
}
// now lets random the weight and see where it lies
float calculatedValue = UnityEngine.Random.Range(0, totalWeight);
// lets use that skill, we will iterate there adding weights to see if we lie within our weight
foreach(AISkillResultSet result in possibleSkills) {
if(calculatedValue <= result.composite.weight) {
return GenerateBattleAction(enemyEntity, result, entityManager);
}
// decrement the value, its the same as using a cursor
calculatedValue -= result.composite.weight;
}
throw new Exception("Failed to find an appropriate skill, random failed");
}
private IBattleAction GenerateBattleAction(EnemyBattleEntity enemyEntity, AISkillResultSet result, BattleEntityManagerComponent entityManager)
{
List<BattleEntity> possibleList = new List<BattleEntity>(result.possibleTargets);
AISkillComposite composite = result.composite;
// choose random target
int index = 0; // default to first index we know exists
if(possibleList.Count > 1) {
index = Mathf.FloorToInt(UnityEngine.Random.Range(0, possibleList.Count));
}
// get the selected / random index
BattleEntity targetEntity = possibleList[index];
// create a list so we can create the proper TargetResolver
// TODO this can be optimized to remove this step, its a lot of work
SelectableTarget selectableTarget = result.selectManager.GetSelectableTarget(targetEntity);
if(selectableTarget == null) {
Debug.Log("F**k.. target was not found in AI ActivateSkill");
}
// get the target resolver
ITargetResolver targetResolver = TargetResolverFactory.CreateTargetResolver(selectableTarget, entityManager);
return BattleActionFactory.CreateBattleAction (composite.skill, enemyEntity, targetResolver);
}