/// <summary>Checks against the guards for the command.</summary>
/// <param name="actionInput">The full input specified for executing the command.</param>
/// <returns>A string with the error message for the user upon guard failure, else null.</returns>
public override string Guards(ActionInput actionInput)
{
IController sender = actionInput.Controller;
string commonFailure = this.VerifyCommonGuards(actionInput, ActionGuards);
if (commonFailure != null)
{
return(commonFailure);
}
// Rule: Do we have an item matching in our inventory?
// TODO: Support drinking from, for instance, a fountain sitting in the room.
string itemIdentifier = actionInput.Tail.Trim();
this.thingToDrink = sender.Thing.FindChild(itemIdentifier.ToLower());
if (this.thingToDrink == null)
{
return("You do not hold " + actionInput.Tail.Trim() + ".");
}
// Rule: Is the item drinkable?
this.drinkableBehavior = this.thingToDrink.Behaviors.FindFirst <DrinkableBehavior>();
if (this.drinkableBehavior == null)
{
return(itemIdentifier + " is not drinkable");
}
return(null);
}
/// <summary>Checks against the guards for the command.</summary>
/// <param name="actionInput">The full input specified for executing the command.</param>
/// <returns>A string with the error message for the user upon guard failure, else null.</returns>
public override string Guards(ActionInput actionInput)
{
var actor = actionInput.Actor;
var commonFailure = VerifyCommonGuards(actionInput, ActionGuards);
if (commonFailure != null)
{
return(commonFailure);
}
// Rule: Do we have an item matching in our inventory?
// TODO: Support drinking from, for instance, a fountain sitting in the room.
var itemIdentifier = actionInput.Tail.Trim();
var thingToDrink = actor.FindChild(itemIdentifier.ToLower());
if (thingToDrink == null)
{
return($"You do not hold {actionInput.Tail.Trim()}.");
}
// Rule: Is the item drinkable?
drinkableBehavior = thingToDrink.FindBehavior <DrinkableBehavior>();
return(drinkableBehavior == null ? $"{itemIdentifier} is not drinkable" : null);
}
