public override void GetContent(IDocumentationBuilder _)
{
base.GetContent(_);
_.CodeSnippet("var player = this.CreatePlayer()");
_.Title2("Creating a ViewModel with the Extension Method");
_.Paragraph("In uframe 1.6 there is an extension method for creating any viewmodel that will use the correct controller to create it.");
_.CodeSnippet("this.CreateViewModel<PlayerViewModel>()");
_.Paragraph("This method will resolve the controller and invoke the associated controller's 'Create' method.");
_.Paragraph("It is important that you use this method because the controller will initialize the commands on the viewmodel to point to the correct handlers on itself.");
_.Break();
_.Title2("Initialization Inside Controllers");
_.Paragraph("Typically you will use the relevant Controller's Initialize{ElementName} function to initialize " +
"a newly created ViewModel with default values and references. It's a great place to subscribe to " +
"state changes and \"scene property\" changes, or possibly track a list of ViewModel instances when " +
"acting similarly to a manager.");
_.Break();
_.Title2("Initialization Inside Views");
_.Paragraph("For convenience, you also have the option of Initializing a ViewModel from a particular View, by checking Initialize ViewModel on the View. This is particularly useful when setting up a scene before runtime or creating prefabs.");
_.Break();
_.AlsoSeePages(typeof(ViewModelManagers));
}
public override void GetContent(IDocumentationBuilder _)
{
base.GetContent(_);
_.Paragraph("By default uFrame keeps up with viewmodels for us. It maintains a manager for each type of viewmodel you create.");
_.Paragraph("To access these managers, you can inject them into controllers and services using the following code.");
_.Break();
_.CodeSnippet("[Inject] public IViewModelManager<MyViewModel> MyViewModelsManager { get; set; }");
_.Break();
_.Note("Important Note: By default every element controller already generates manager properties just like the above example for the associated element's viewmodel.");
}
public override void GetContent(IDocumentationBuilder _)
{
base.GetContent(_);
_.Paragraph("So if you've made games in Unity before, you may have noticed how easy " +
"it is to end up with a mess of components with heavy dependencies. Unit " +
"testing is impossible. Adding/removing properties or changing the game " +
"logic of one component may break components on one, two, or half a dozen " +
"other Gameobjects and/or UI elements. It can easily become a nightmare.");
_.Break();
_.Paragraph("In uFrame, an emphasis is placed on separating out the pieces of your game " +
"into certain categories (often referred to as \"layers\"), based on this hybrid" +
" MVCVM pattern. The reasoning behind this is to help enforce separation of concerns, " +
"and allow you to quickly split things into these categories and think about them " +
"up-front. These parts are defined as:");
_.ImageByUrl("http://i.imgur.com/oVunJef.png");
_.Paragraph(" - ViewModels: The objects, including properties and available commands");
_.Paragraph(" - Controllers: The rules, where you implement logic of commands");
_.Paragraph(" - Views: The visual/auditory representation of your objects in a game engine environment");
_.Break();
_.Paragraph("It gets a little more complicated with the actual implementation, but the chart above " +
"is the core concept. Ideas are always theoretical. The idea of your game and everything" +
" that defines it should technically be able to exist in any environment, whether it's a " +
"game engine, a console app, or a physical board game. A player takes damage and health " +
"is decremented; this concept can be represented any number of ways, as a UI health gauge, " +
"a damage printout message in a console, or loss of health tokens from a board game player.");
_.Break();
_.Break();
_.Paragraph(
"In the previous example the Player would be a ViewModel, an object in your game, with a " +
"Health property. There would most likely be a TakeDamage command defined in the " +
"PlayerController, which would handle the rule of decrementing the playerViewModel's Health." +
" When the value changes on the Health property, you may have it trigger a view binding on " +
"the PlayerHUDView which updates a health gauge according to this new value. The fun part is " +
"that all it takes to trigger this chain of events is something like:");
_.CodeSnippet("ExecuteCommand(playerVM.TakeDamage, 10); // player takes 10 damage");
_.Paragraph("This command can be executed from any controller, or any view that has access to that " +
"particular PlayerViewModel instance, usually through some kind of interaction, such as a " +
"collision with spikes or an enemy's weapon. Furthermore, it is important to make a " +
"distinction of game logic (which goes on the Controller layer of the design) and " +
"visual/auditory/engine-specific logic (which belongs on the View layer).");
_.Break();
_.Paragraph("Instead of an EnemyView detecting that it has hit the PlayerView, taking its PlayerViewModel " +
"instance, and executing the TakeDamage command on it directly from that EnemyView, it's " +
"important to make the distinction that this is game logic and belongs in the Controller " +
"layer. The correct approach that most follows the MVCVM pattern would be to implement " +
"some kind of AttackPlayer command on the Enemy element, and pass the playerViewModel of " +
"the PlayerView that the EnemyView has hit.");
_.ShowGist("2db6ead6cc89deb81a5e", "EnemyView, Hit was detected");
_.Paragraph("Now that you're handling the game logic properly on the Controller layer, the actual logic " +
"is no longer dependent on that specific view, and is available to anything that tells the" +
" EnemyViewModel to AttackPlayer.");
_.ShowGist("f79b3de4126c75d5bb03", "Enemy and Player Controllers Command Logic");
_.Break();
_.Paragraph("As you can see, there's a method to the madness. Separating the core logic and state " +
"from the \"Monobehaviour\" side of things allows any number of Views to use this data. " +
" Under the hood, uFrame manages the state and helps centralize logic. Everything else " +
"is just an expression of that state, a Player getting attacked or taking damage and " +
"losing health.");
}
