public PlannerNode(PlannerNode copyOf)
{
Parent = copyOf.Parent;
RunningCost = copyOf.RunningCost;
RunningData = copyOf.RunningData;
Action = copyOf.Action;
}
public BaseSubject()
{
Data = new SubjectData()
{
States = new List <State>(),
Resources = new Dictionary <string, float>()
};
}
public override void Apply(ref SubjectData actorData, ref SubjectData subjectData)
{
if (StateChange == StateChange.Gain && actorData.States.FirstOrDefault(s => s.GetType() == State.GetType()) == null)
actorData.States.Add(State);
else if (StateChange == StateChange.Lose)
{
actorData.States.Remove(actorData.States.FirstOrDefault(s => s.GetType() == State.GetType()));
}
}
public virtual void Exit(Actor actor)
{
// TODO aherrera : DUMMY! HE'S GOT A KNIFE.
var dummySubject = new SubjectData();
foreach (var result in Results)
{
result.Apply(ref actor.Data, ref dummySubject);
}
}
public override void Apply(ref SubjectData actorData, ref SubjectData subjectData)
{
if (actorData.Resources.ContainsKey(Resource.Name))
{
actorData.Resources[Resource.Name] += Amount;
}
else
{
actorData.Resources.Add(Resource.Name, Amount);
}
}
/// <summary>
/// Test if given conditions are met based on given data.
/// </summary>
/// <param name="toTest"></param>
/// <param name="currentData"></param>
/// <returns></returns>
private static bool IsConditionsMet(List <BaseCondition> toTest, SubjectData currentData)
{
bool allMet = true;// toTest.Count > 0;
foreach (var condition in toTest)
{
allMet &= condition.IsMet(currentData);
}
return(allMet);
}
/// <summary>
/// Copy the results of the action to simulate plan flow
/// </summary>
/// <param name="runningData"></param>
/// <param name="actionResults"></param>
/// <returns></returns>
private static SubjectData CopyActionResults(SubjectData runningData, List <BaseResult> actionResults)
{
var newData = new SubjectData()
{
Resources = new Dictionary <string, float>(runningData.Resources),
States = new List <State>(runningData.States)
};
var subjectDummyData = new SubjectData();
foreach (var result in actionResults)
{
// TODO aherrera : we should be able to apply results onto a subject -- but not necessary
result.Apply(ref newData, ref subjectDummyData);
}
return(newData);
}
public override bool IsMet(SubjectData data)
{
var agentResource = data.Resources.FirstOrDefault(r => r.Key == Resource.Name).Value;
switch (Comparison)
{
case Comparison.Less:
return(agentResource < Value);
case Comparison.LessOrEqual:
return(agentResource < Value || agentResource.Equals(Value));
case Comparison.Equal:
return(agentResource.Equals(Value));
case Comparison.MoreOrEqual:
return(agentResource > Value || agentResource.Equals(Value));
case Comparison.More:
return(agentResource > Value);
}
return(false);
}
/// <summary>
/// Based on the given parent, we construct a graph branching from it.
/// Returns true if ANY plan was found.
/// </summary>
/// <param name="parent"></param>
/// <param name="graphRef"></param>
/// <param name="goal"></param>
/// <param name="performableActions"></param>
/// <returns></returns>
private static bool BuildGraph(PlannerNode parent, List <PlannerNode> graphRef, Goal goal, List <BaseAction> performableActions)
{
bool planFound = false;
foreach (var action in performableActions)
{
PlannerNode actualBatman = new PlannerNode(parent);
if (IsConditionsMet(action.Conditions, actualBatman.RunningData))
{
// Apply the results of the action as if completed successfully.
SubjectData resultantData = CopyActionResults(actualBatman.RunningData, action.Results);
PlannerNode node = new PlannerNode()
{
Parent = actualBatman,
RunningCost = actualBatman.RunningCost + (int)action.Difficulty,
RunningData = resultantData,
Action = action
};
if (IsConditionsMet(goal.DesiredConditions, resultantData))
{
// A solution has been constructed;
graphRef.Add(node);
planFound = true;
}
else
{
// Solution not yet found, test remaining actions
List <BaseAction> subsetActions = CreateActionSubset(performableActions, action);
planFound = BuildGraph(node, graphRef, goal, subsetActions);
}
}
}
return(planFound);
}
public virtual bool IsMet(SubjectData data)
{
return(true);
}
public abstract void Apply(ref SubjectData actorData, ref SubjectData subjectData);
public override bool IsMet(SubjectData data)
{
return(data.States.FirstOrDefault(s => s.GetType() == State.GetType()) != null);
}