# SceneScript Reference
SceneScript is follows the ECMAScript 2018 specification, so you can utilize all functionalities from ECMAScript that you would also find in similar languages such as JavaScript. This is very useful as you can make use of various helpful classes. For example, Date allows you to access the current date and time, Math allows you to access various mathematical utility functions.
This page only covers all additions that SceneScript adds to make working with wallpapers possible.
# Globals
SceneScript introduces a handful of globals which you can access at any point in your code.
| Global | Description |
|---|---|
| engine | Access to general features of the application. IEngine class. |
| input | Input related data, mainly the mouse cursor. IInput class. |
| thisScene | The currently loaded scene wallpaper. IScene class |
| thisLayer | The layer this script has been loaded on. ILayer class. |
| thisObject | The object this script belongs to. IThisPropertyObject class. |
| console | Access the console log for debugging purposes. IConsole class. |
| shared | Empty by default, allows you to share data between multiple scripts. Shared class. |
# Events
SceneScript uses an event system that allows you to run specific code whenever certain events take place. Most notably, the update event is most commonly used to execute SceneScript code at every frame that Wallpaper Engine calculates. The init event is good for running code once when the wallpaper is first loaded and the applyUserProperties event allows you to react to changes to user properties of your wallpaper. Additionally, there are a handful of cursor events which related to mouse movement and mouse input which you can incorporate into your wallpaper.
| Event | Description |
|---|---|
| init | This initialization function will be called once after the object it belongs to has been created. |
| update | This event function will be called every frame for all scripts that export it. |
| destroy | This event function will be called just before the object it belongs to gets destroyed. |
| resizeScreen | This function will be called every time the wallpaper resizes because of a change to the current resolution. |
| applyUserProperties | This event function will be called once initially when the wallpaper is loaded and whenever any user properties are being adjusted by the user. |
| cursorEnter | This event function will be called when the cursor enters the bounds of the object. |
| cursorLeave | This event function will be called when the cursor leaves the bounds of the object. |
| cursorMove | This event function will be called when the cursor has been moved. |
| cursorDown | This event function will be called when the cursor is being pressed down on an object. |
| cursorUp | This event function will be called when the cursor is being released over an object. |
| cursorClick | This event function will be called when the cursor has been pressed and released on the same object. |
| mediaStatusChanged | This event function will be called when the media integration is turned on or off by the user. |
| mediaPlaybackChanged | This event function will be called when the users starts, stops or pauses media. |
| mediaPropertiesChanged | This event function will be called when the properties of the currently playing media change. |
| mediaThumbnailChanged | This event function will be called when the thumbnail of the currently playing media changes. |
| mediaTimelineChanged | This event function will be called when the current time of the playing media changes and is only provided by certain applications. |
# Classes
All components of Wallpaper Engine are provided with a fitting class so that you can access everything programmatically. The following list contains all relevant classes introduced by SceneScript:
| Class | Description |
|---|---|
| AnimationEvent | This object describes an animation event that has been fired from a timeline or puppet warp animation. |
| AudioBuffers | Provides access to the left and right audio spectrum values and their combined average for audio visualization purposes. |
| CameraTransforms | Objects of this class describe the camera orientation and position. |
| CursorEvent | Provides information about the cursor position during cursor events. |
| IAnimation | This class represents a timeline property animation. |
| IAnimationLayer | This class represents a puppet warp or 3D model animation layer. |
| IConsole | You can access this interface anywhere in your SceneScript code through the global console object to interact with the console log. |
| IEffect | Provides access to image effects used on image layers. |
| IEffectLayer | Base class for image and text layers. |
| IEngine | Provides general information about the user device and the running wallpaper. |
| IImageLayer | This class provides access to functions specific to image layers. |
| IModelLayer | This class provides access to functions specific to 3D model layers. |
| IInput | Provides access to input related data, mainly the mouse cursor. |
| ILayer | Provides access to data related to a layer. |
| ILocalStorage | Provides access to the local storage functionality. |
| IMaterial | Provides access to dynamic properties of materials / shader properties. |
| IParticleSystem | Provides access to particle systems and lets you modify their playback state. |
| IParticleSystemInstance | Provides access to instance modifiers for particle systems. You can use this to adjust details of a particle system dynamically. |
| IScene | Provides access to properties of the currently loaded scene. |
| ISoundLayer | Provides access functions specific to sound layers. |
| ITextureAnimation | This class represents a texture animation. |
| IVideoTexture | This class represents a video texture animation. |
| Mat4 | Utility class used for creating a 4 dimensional identity matrix. |
| MediaPlaybackEvent | Media integration event, fired when the user starts, stops or pauses media. |
| MediaPropertiesEvent | Media integration event, fired when the properties of the current media session are changing. |
| MediaStatusEvent | Media integration event, fired when the user turns the media integration on or off. |
| MediaThumbnailEvent | Media integration event, fired when the thumbnail pertaining to the current media changes. |
| MediaTimelineEvent | Optional media integration event, fired irregularly when the current time of the media session changes. |
| Shared | Related to the global object shared which you may use to share data between multiple scripts. |
| Vec2 | Utility class which holds a 2 dimensional value pair: x and y. |
| Vec3 | Utility class which holds a 3 dimensional value pair: x, y and z. |
# Modules
Wallpaper Engine also provides some modules which can be used to access certain utility functions. These can be helpful to easily implement certain use-cases.
| Module | Description |
|---|---|
| WEColor | Module which provides utility functions related to color manipulation. |
| WEMath | Module which provides utility functions related to general mathematical functions. |
| WEVector | Module which provides utility functions related to working with vectors. |