Struct SceneManager 

pub struct SceneManager { /* private fields */ }

Manages scene registration, transitions, and lifecycle.

Implementations

impl SceneManager

Implements static scene creation for SceneManager.

pub fn create_scene<T>(scene: T) -> SceneRc

where T: Scene + 'static,

Creates a new SceneRc wrapping the given scene in a reference-counted cell.

Arguments

• T - The concrete scene type implementing Scene.

Returns

• SceneRc - The wrapped scene.

impl SceneManager

Implements scene registration and lifecycle management for SceneManager.

pub fn register(&mut self, name: String, scene: SceneRc)

Registers a scene under the given name.

Arguments

• String - The name to register the scene under.
• SceneRc - The scene to register.

pub fn unregister(&mut self, name: &str)

Unregisters and removes the scene with the given name.

Arguments

• &str - The name of the scene to remove.

pub fn switch_to(&mut self, name: &str) -> bool

Transitions to the scene with the given name.

Calls on_exit on the current scene and on_enter on the new scene. Returns false if no scene with the given name is registered.

Arguments

• &str - The name of the scene to switch to.

Returns

• bool - True if the transition was successful.

pub fn request_transition(&mut self, name: String)

Requests a deferred scene transition to be applied on the next update.

Arguments

• String - The name of the scene to switch to.

pub fn process_pending_transition(&mut self)

Processes a pending scene transition if one was requested.

pub fn update(&mut self, delta_time: f64)

Calls on_update on the current scene.

Arguments

• f64 - The delta time in seconds.

pub fn render(&self, context: &CanvasRenderingContext2d)

Calls on_render on the current scene.

Arguments

• &CanvasRenderingContext2d - The canvas rendering context.

pub fn has_scene(&self, name: &str) -> bool

Returns whether a scene with the given name is registered.

Arguments

• &str - The scene name to check.

Returns

• bool - True if the scene is registered.

pub fn current_name(&self) -> Option<&str>

Returns the name of the currently active scene.

Returns

• Option<&str> - The current scene name, or None.

impl SceneManager

pub fn new() -> Self

Trait Implementations

impl Clone for SceneManager

fn clone(&self) -> SceneManager

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for SceneManager

Implements Default for SceneManager as a new empty manager.

fn default() -> SceneManager

Returns the “default value” for a type.