public void AddKnowledge(Sentence sentence) // implied source is yourself, 100% confidence
{
if (sentence.Subject.Type() == NounType.Unique || sentence.DirectObject.Type() == NounType.Unique)
{
return; // dont store any AI beliefs about things like the potion. Dont allow sentences about it.
}
// Allow the player to use these words for sentences later
if (sentence.Subject != Noun.SuspectedName)
{
KnownWords.Add(sentence.Subject);
}
if (sentence.DirectObject != Noun.SuspectedName)
{
KnownWords.Add(sentence.DirectObject);
}
// is it ok to have multiple beliefs about the same sentence? maybe it gets resolved later
SentenceBelief belief = new SentenceBelief(sentence, mPersonId, mPersonConfidence[mPersonId]);
if (!mBeliefs.Contains(belief))
{
Debug.Log(mPersonId + " believes " + sentence);
mBeliefs.Add(belief);
List <SentenceBelief> newBeliefs = new List <SentenceBelief>();
newBeliefs.Add(belief);
UpdateBeliefs(newBeliefs);
}
//if (AddKnowledgeUnique(sentence))
//UpdateBeliefs();
}
private void RecursiveUpdateConfidence(SentenceBelief b, float amt)
{
b.mConfidence *= amt;
Debug.Log(mPersonId + " now only believes " + b.mSentence + " " + b.mConfidence);
foreach (SentenceBelief deduction in b.mDeductions)
{
RecursiveUpdateConfidence(deduction, amt);
}
}
public SentenceBelief(Sentence sentence, SentenceBelief source1, SentenceBelief source2, float confidence)
{
mDeduced = true;
mSentence = sentence;
mSourceBelief1 = source1;
mSourceBelief2 = source2;
mConfidence = confidence;
mSourceId = -1;
}
public SentenceBelief(Sentence sentence, int sourceId, float confidence)
{
mDeduced = false;
mSentence = sentence;
mSourceId = sourceId;
mConfidence = confidence;
mSourceBelief1 = null;
mSourceBelief2 = null;
}
private void RemoveBelief(SentenceBelief b)
{
// if this belief is false, then at least 1 belief we used to arrive at it must be false
List <SentenceBelief> rootBeliefs = new List <SentenceBelief>();
GetRootBeliefs(b, rootBeliefs, true);
mSuspiciousBeliefs.Add(rootBeliefs);
Debug.Log(mPersonId + " no longer believes " + b.mSentence);
mBeliefs.Remove(b); // TODO: this is probably too naive
}
private void GetRootBeliefs(SentenceBelief b, List <SentenceBelief> rootBeliefs, bool filterOutTrue)
{
if (!b.mDeduced)
{
if (!filterOutTrue || b.mConfidence < 1)
{
rootBeliefs.Add(b);
}
return;
}
GetRootBeliefs(b.mSourceBelief1, rootBeliefs, filterOutTrue);
if (b.mSourceBelief2 != null)
{
GetRootBeliefs(b.mSourceBelief2, rootBeliefs, filterOutTrue);
}
}
public override bool Equals(object obj)
{
//Check for null and compare run-time types.
if ((obj == null) || !this.GetType().Equals(obj.GetType()))
{
return(false);
}
SentenceBelief other = (SentenceBelief)obj;
return(
mSentence.Equals(other.mSentence)
// && mDeduced == other.mDeduced
// && (
// (mDeduced && mSourceSentence1 == other.mSourceSentence1 && mSourceSentence2 == other.mSourceSentence2)
// || (!mDeduced && mSourceId == other.mSourceId)
// )
);
}
private void ExplainBeliefRecursive(SentenceBelief b, List <string> explanation)
{
if (!b.mDeduced)
{
if (b.mSourceId == mPersonId)
{
explanation.Add((explanation.Count > 0 ? "And " : "") + b.mSentence);
}
else
{
explanation.Add((explanation.Count > 0 ? "And " : "") + GameState.Get().mPeople[b.mSourceId].AttributeMap[NounType.HairColor] + " said that " + b.mSentence);
}
return;
}
ExplainBeliefRecursive(b.mSourceBelief1, explanation);
if (b.mSourceBelief2 != null)
{
ExplainBeliefRecursive(b.mSourceBelief2, explanation);
}
}
public List <string> ExplainBelief(Sentence sentence)
{
List <string> explanation = new List <string>();
float maxConfidence = 0f;
SentenceBelief bestBelief = null;
foreach (SentenceBelief b in mBeliefs)
{
if (b.mSentence.Equals(sentence))
{
maxConfidence = Mathf.Max(maxConfidence, b.mConfidence);
bestBelief = b;
}
}
if (bestBelief == null)
{
return(explanation);
}
ExplainBeliefRecursive(bestBelief, explanation);
return(explanation);
}
private void UpdateBeliefs(List <SentenceBelief> newBeliefs)
{
// go through all knowledge, and see if we can synthesize anything new from the new beliefs
Debug.Log(mPersonId + " updating beliefs ");
// defer adding/removing knowledge until the end, so we aren't modifying knowledge while we read it
List <SentenceBelief> beliefDeductions = new List <SentenceBelief>();
List <SentenceBelief> refutedBeliefs = new List <SentenceBelief>();
foreach (SentenceBelief b1 in newBeliefs)
{
Sentence s1 = b1.mSentence;
// before making any inferences, check for contradictions
bool contradictory = false;
foreach (SentenceBelief b2 in mBeliefs)
{
Sentence s2 = b2.mSentence;
if (s1.SameIdea(s2) && s1.Adverb != s2.Adverb)
{
contradictory = true;
if (b2.mConfidence >= 1)
{
Debug.Log(mPersonId + " accepted info that contradicts something known: " + s1 + " vs. " + s2);
refutedBeliefs.Add(b1);
continue;
}
if (b1.mConfidence >= 1)
{
Debug.Log(mPersonId + " found information contradicting previous beliefs: " + s1 + " vs. " + s2);
refutedBeliefs.Add(b2);
beliefDeductions.Add(b1); // queue up this belief for re-thinking, after removing the belief it contradicts
}
else
{
// conflicting information, but not sure about which is true... oh well
// TODO: what to do here? set up some kind of contradictory info set that the AI active seeks to resolve?
}
}
}
if (contradictory)
{
Debug.Log(mPersonId + " thinks " + b1.mSentence + " is contradictory, and will not make inferences with it");
continue;
}
// rule 1: transitivity
// [A is B] and [B is C] => [A is C] (including valid permutations)
// also, the negative version (rule 1.5): [A is B] and [B is not C] => [A is not C]
if (s1.Verb == Verb.Is)
{
if (s1.Adverb == Adverb.True)
{
foreach (SentenceBelief b2 in mBeliefs)
{
if (b1.Equals(b2))
{
continue;
}
Sentence s2 = b2.mSentence;
if (s2.Verb != Verb.Is)
{
continue;
}
Sentence newSentence = null;
float confidence = b1.mConfidence * b2.mConfidence;
if (confidence <= 0.2)
{
continue;
}
if (s2.Adverb == Adverb.True || s2.Adverb == Adverb.False)
{
if (s1.DirectObject == s2.Subject)
{
newSentence = new Sentence(s1.Subject, Verb.Is, s2.DirectObject, s2.Adverb);
}
else if (s1.Subject == s2.Subject)
{
newSentence = new Sentence(s1.DirectObject, Verb.Is, s2.DirectObject, s2.Adverb);
}
else if (s1.DirectObject == s2.DirectObject)
{
newSentence = new Sentence(s1.Subject, Verb.Is, s2.Subject, s2.Adverb);
}
else if (s1.Subject == s2.DirectObject)
{
newSentence = new Sentence(s1.DirectObject, Verb.Is, s2.Subject, s2.Adverb);
}
}
if (newSentence != null)
{
SentenceBelief newBelief = new SentenceBelief(newSentence, b1, b2, confidence);
beliefDeductions.Add(newBelief);
Debug.Log("New belief: " + newBelief.mSentence + " (confidence: " + confidence + ") | Since " + s1 + " (confidence: " + b1.mConfidence + ") and " + s2 + " (confidence: " + b2.mConfidence + ")");
}
}
}
else if (s1.Adverb == Adverb.False)
{
foreach (SentenceBelief b2 in mBeliefs)
{
if (b1.Equals(b2))
{
continue;
}
Sentence s2 = b2.mSentence;
if (!(s2.Verb == Verb.Is && s2.Adverb == Adverb.True))
{
continue;
}
Sentence newSentence = null;
float confidence = b1.mConfidence * b2.mConfidence;
if (confidence <= 0.2)
{
continue;
}
if (s1.DirectObject == s2.Subject)
{
newSentence = new Sentence(s1.Subject, Verb.Is, s2.DirectObject, Adverb.False);
}
else if (s1.Subject == s2.Subject)
{
newSentence = new Sentence(s1.DirectObject, Verb.Is, s2.DirectObject, Adverb.False);
}
else if (s1.DirectObject == s2.DirectObject)
{
newSentence = new Sentence(s1.Subject, Verb.Is, s2.Subject, Adverb.False);
}
else if (s1.Subject == s2.DirectObject)
{
newSentence = new Sentence(s1.DirectObject, Verb.Is, s2.Subject, Adverb.False);
}
if (newSentence != null)
{
SentenceBelief newBelief = new SentenceBelief(newSentence, b1, b2, confidence);
beliefDeductions.Add(newBelief);
Debug.Log("New belief: " + newBelief.mSentence + " (confidence: " + confidence + ") | Since " + s1 + " (confidence: " + b1.mConfidence + ") and " + s2 + " (confidence: " + b2.mConfidence + ")");
}
}
}
} // END TRANSITIVITY
// rule 2: mutual exclusion
// if [A is X] and [X, Y] are mutually exclusive, then [A is not Y]
// but this only applies if A <-> X is an IS relationship (i.e. nothing else can be X)
if ((s1.Verb == Verb.Is && s1.Adverb == Adverb.True))
{
NounType t = s1.DirectObject.Type();
Noun[] nouns = t.GetMutuallyExclusiveNouns();
if (nouns != null)
{
foreach (Noun n in nouns)
{
if (s1.DirectObject != n)
{
Sentence newSentence = new Sentence(s1.Subject, Verb.Is, n, Adverb.False);
SentenceBelief belief = new SentenceBelief(newSentence, b1, null, b1.mConfidence);
beliefDeductions.Add(belief);
Debug.Log("New belief: " + belief.mSentence + " (confidence: " + b1.mConfidence + ") | Since " + s1 + " (confidence: " + b1.mConfidence + ")");
}
}
}
t = s1.Subject.Type();
nouns = t.GetMutuallyExclusiveNouns();
if (nouns != null)
{
foreach (Noun n in nouns)
{
if (s1.Subject != n)
{
Sentence newSentence = new Sentence(s1.DirectObject, Verb.Is, n, Adverb.False);
SentenceBelief belief = new SentenceBelief(newSentence, b1, null, b1.mConfidence);
beliefDeductions.Add(belief);
Debug.Log("New belief: " + belief.mSentence + " (confidence: " + b1.mConfidence + ") | Since " + s1 + " (confidence: " + b1.mConfidence + ")");
}
}
}
} // END MUTUAL EXCLUSIVITY
// special rule: determining motive
NounType subjectType = s1.Subject.Type();
NounType objectType = s1.DirectObject.Type();
if (subjectType == NounType.Motive)
{
Sentence newSentence = new Sentence(s1.DirectObject, Verb.Has, Noun.Motive, Adverb.True);
SentenceBelief belief = new SentenceBelief(newSentence, b1, null, b1.mConfidence);
beliefDeductions.Add(belief);
}
else if (objectType == NounType.Motive)
{
Sentence newSentence = new Sentence(s1.Subject, Verb.Has, Noun.Motive, Adverb.True);
SentenceBelief belief = new SentenceBelief(newSentence, b1, null, b1.mConfidence);
beliefDeductions.Add(belief);
}
}
RemoveBeliefs(refutedBeliefs);
AddBeliefs(beliefDeductions);
}
public void Listen(PersonState person, Sentence sentence, out string[] spokenResponse, out AudioClipIndex[] audioResponse)
{
// Allow the player to use these words for sentences later
// unique words are not worth talking about, and AI should also not store any beliefs.
if (sentence.Subject.Type() == NounType.Unique || sentence.DirectObject.Type() == NounType.Unique)
{
int randomReaction2 = Random.Range(0, 3);
string[] possibleSpokenReact2 = new string[] { "Interesting...", "Hmm...", "Oh." };
AudioClipIndex[] possibleAudio2 = new AudioClipIndex[] { AudioClipIndex.HMM, AudioClipIndex.HMM, AudioClipIndex.OH };
spokenResponse = new string[] { possibleSpokenReact2[randomReaction2] };
audioResponse = new AudioClipIndex[] { possibleAudio2[randomReaction2] };
return;
}
// special case hax: SuspectedName is not worth talking about
if (sentence.Subject != Noun.SuspectedName)
{
KnownWords.Add(sentence.Subject);
}
if (sentence.DirectObject != Noun.SuspectedName)
{
KnownWords.Add(sentence.DirectObject);
}
// preemptively reject sentences that contradict something we are sure of
Sentence opposite = new Sentence(sentence.Subject, sentence.Verb, sentence.DirectObject, sentence.Adverb == Adverb.True ? Adverb.False : Adverb.True);
float confidenceInOpposite = VerifyBelief(opposite);
if (confidenceInOpposite >= 1f)
{
Debug.Log(person.PersonId + " told a lie: " + sentence);
ConfidenceLost(person.PersonId);
spokenResponse = new string[] { "What? I know that's not true." };
audioResponse = new AudioClipIndex[] { AudioClipIndex.SURPRISE_EH };
return;
}
float confidence = VerifyBelief(sentence);
if (confidence > 0)
{
if (confidence >= 1)
{
spokenResponse = new string[] { "Sure, I already knew that." };
audioResponse = new AudioClipIndex[] { AudioClipIndex.AGREE };
return;
}
if (confidence >= 0.5)
{
spokenResponse = new string[] { "I suspected as much." }; // should this actually early return?
audioResponse = new AudioClipIndex[] { AudioClipIndex.AGREE };
return;
}
// increase confidence? maybe this is a way to "hack the system" to gain AI trust: tell them things they already believe
}
// Add this to beliefs with some confidence number
Debug.Log(mPersonId + " hears " + person.PersonId + " say " + sentence);
SentenceBelief belief = new SentenceBelief(sentence, person.PersonId, mPersonConfidence[person.PersonId]);
List <SentenceBelief> beliefs = new List <SentenceBelief>();
beliefs.Add(belief);
AddBeliefs(beliefs);
Noun myHairColor = mPerson.AttributeMap[NounType.HairColor];
if (sentence.Subject == myHairColor)
{
spokenResponse = new string[] {
"So " + sentence.DirectObject.AsPersonal() + "?",
sentence.DirectObject.PersonalReaction()
};
audioResponse = new AudioClipIndex[] { AudioClipIndex.SURPRISE_EH, AudioClipIndex.NONE };
return;
}
else if (sentence.DirectObject == myHairColor)
{
spokenResponse = new string[] {
"So I'm " + sentence.Subject.AsSubject() + "...?",
sentence.Subject.PersonalReaction()
};
audioResponse = new AudioClipIndex[] { AudioClipIndex.SURPRISE_EH, AudioClipIndex.NONE };
return;
}
int randomReaction = Random.Range(0, 3);
string[] possibleSpokenReact = new string[] { "Interesting...", "Hmm...", "Oh." };
AudioClipIndex[] possibleAudio = new AudioClipIndex[] { AudioClipIndex.HMM, AudioClipIndex.HMM, AudioClipIndex.OH };
spokenResponse = new string[] { possibleSpokenReact[randomReaction] };
audioResponse = new AudioClipIndex[] { possibleAudio[randomReaction] };
return;
}