Unity-MenuStack

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Unity-MenuStack

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A way to track unity menu navigation that doesn't suck too much

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# unity-menustack

A way to track unity menu navigation that doesn't suck too much.

## What

Managing the navigation of menu systems in unity is sucky. __It shouldn't be__.
`unity-menustack` provides simple menu state tracking behaviours.

## How

> See the generated docs ([raw](./docs) or [hosted](https://bengreenier.github.io/Unity-MenuStack)) for more info!

### Prefixing

> By default, prefixing is enabled, but it costs us perf. To disable it, set `MenuRoot.DisableRuntimeTagging` to `true`

Prefixing allows the building of menus given just `GameObject` names. At runtime, `Menu` or `OverlayMenu` components are added
to facilitate the actual behaviours we expect.

You can tune which prefixes the system uses with `MenuRoot.MenuPrefix` and `MenuRoot.OverlayPrefix`.

Since this is enabled by default, you don't need to worry about manually adding `Menu` or `MenuOverlay` components yourself.

### Basic

+ Include [Assets/Scripts](./Assets/Scripts) in your project
+ Add a `MenuRoot` to some root level menu object
+ Prefix the name of all child menus with `menu`
+ Call `this.GetComponentInParent<MenuRoot>().OpenAsync(Menu)` or ``this.GetComponentInParent<MenuRoot>().CloseAsync()` from any submenu to navigate
+ [Optional] Listen for `MenuRoot.Opened` and `MenuRoot.Closed` events to know when things change

### Overlays

> Overlays are regular menus, except they don't hide the previous menu, they are displayed atop it

To use an overlay, simply prefix the name of a child menu with `overlay`.

### Navigation

> Navigation provides wrappers around the `MenuRoot.OpenAsync(Menu)` and `MenuRoot.CloseAsync()` methods so you don't have to!

See [Assets/Examples/ComplexLayoutRigged.unity](./Assets/Examples/ComplexLayoutRigged.unity) for an example.

That said, the general idea is as follows:

+ Add some `INavigator` to a component that should trigger navigation
+ Wire the trigger such that it calls `INavigator.Navigate()` (note: if the trigger is a button, it will be auto wired)
+ Configure additional properties of the specific `INavigator` you chose

Here's a button that's configured as a [BackMenuNavigator](https://bengreenier.github.io/Unity-MenuStack/class_menu_stack_1_1_navigation_1_1_back_menu_navigator.html):

![screenshot backmenunav](https://raw.githubusercontent.com/bengreenier/Unity-MenuStack/master/docs/img/backmenunav.png)

### Animation

> Animation provides support for custom __pretty__ :dancer: transitions between menus!

See [Assets/Examples/AnimatedLayoutRigged.unity](./Assets/Examples/AnimatedLayoutRigged.unity) for an example.

That said, the general idea is as follows:

+ Add a `MenuAnimator` to some `Menu` that you want to animate
+ This will add an `Animator` that you'll need to setup
+ The Animator will need an AnimatorController, that you should define
+ The AnimatorController should define two states, one for open, and one for close - by default these are expected to be named `Open` and `Close` (though you can change that)
+ The AnimatorController should define two triggers, to enter each of these states - these must be named the same as the states
+ The AnimatorController should define transitions between the two states, and each trigger should be a condition
+ [Optional] you probably don't want your animation clips to loop, so select them, and turn off looping in the inspector

This will make your menus transition from `Close` to `Open` when they open, and `Open` to `Close` when they close.

### Hierarchy viewer

> Hierarchy viewer is currently a beta feature, and should be treated as such!

The included `Window/MenuStack/Hierarchy` panel can be used to visualize the menustack and control visibility of different menus to make them easier to work with.
When using this view, all history is tracked, and can be Reverted with the `Reset` button. Further, changes can be saved with the `Save` Button.

![screenshot editorwindow](https://raw.githubusercontent.com/bengreenier/Unity-MenuStack/master/docs/img/editorwindow.png)

## Examples

There's a few examples under [Assets/Examples](./Assets/Examples). These should cover the major use cases
and are fairly self explanatory. I'll do some deep dive explanations in the near future.

## License

MIT

Unity-MenuStack

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