SLTutorialController is a class that manages the user’s progression through a linear tutorial. We built it while adding a tutorial to a game we made for a client. In this post, you’ll learn what it can be used for, and how to use it!
Say you have three stages in a tutorial: build a building, select a unit, and defeat an enemy.
First, you’d list the stages in SLTutorialController.h:
Next, whenever your player builds a building (at any stage), you add this line:
Likewise, whenever your player selects a unit, you do this:
Likewise for SLTutorialDefeatAnEnemy.
Calls to -tutorialStagePerformed: will ONLY move to the next tutorial stage if the tutorial is actually at that stage. This means your game logic code doesn’t have to do a bunch of state checks on the tutorial, you just stick a -tutorialStagePerformed: at the right spots.
You can ask SLTutorialController for the tutorial’s current state via the tutorialStage property:
SLTutorialController posts the SLTutorialStageUpdated notification whenever the tutorial state changes. This means that you can easily be notified when the state changes.
SLTutorialController stores its data in NSUserDefaults, so it’s remembered for you.