public override ExecutionResult Execute(SuperMetroidModel model, InGameState inGameState, int times = 1, bool usePreviousRoom = false)
{
IEnumerable <int> visitedNodeIds = inGameState.GetVisitedNodeIds(usePreviousRoom);
// If the node at which we entered is not allowed, this is not fulfilled.
if (!NodeIds.Contains(visitedNodeIds.First()))
{
return(null);
}
// If we have visited a node to avoid, this is not fulfilled.
if (NodeIdsToAvoid.Intersect(visitedNodeIds).Any())
{
return(null);
}
// If we were supposed to stay put but have visited more than the starting node, this is not fulfilled
if (MustStayPut && visitedNodeIds.Count() > 1)
{
return(null);
}
// If we have destroyed an obstacle that needed to be preserved, this is not fulfilled
if (ObstaclesIdsToAvoid.Intersect(inGameState.GetDestroyedObstacleIds(usePreviousRoom)).Any())
{
return(null);
}
// We've avoided all pitfalls. This ResetRoom is fulfilled. Clone the InGameState to fulfill method contract
return(new ExecutionResult(inGameState.Clone()));
}
/// <summary>
/// Returns whether the provided InGameState fulfills this PreviousNode element.
/// </summary>
/// <param name="inGameState">The in-game state to evaluate</param>
/// <param name="usePreviousRoom">If true, uses the last known room state at the previous room instead of the current room to answer
/// <returns></returns>
public bool IsFulfilled(InGameState inGameState, bool usePreviousRoom)
{
// Look at second-to-last visited node (last node is the current node)
IEnumerable <int> visitedNodeIds = inGameState.GetVisitedNodeIds(usePreviousRoom);
return(visitedNodeIds.ElementAtOrDefault(visitedNodeIds.Count() - 2) == Value);
}
