Trait UpdateEvent 

pub trait UpdateEvent: Sized {
    // Required methods
    fn from_update_args(args: &UpdateArgs, old_event: &Self) -> Option<Self>;
    fn update<U, F>(&self, f: F) -> Option<U>
       where F: FnMut(&UpdateArgs) -> U;

    // Provided methods
    fn from_dt(dt: f64, old_event: &Self) -> Option<Self> { ... }
    fn update_args(&self) -> Option<UpdateArgs> { ... }
}

When the application state should be updated.

Required Methods

fn from_update_args(args: &UpdateArgs, old_event: &Self) -> Option<Self>

Creates an update event.

fn update<U, F>(&self, f: F) -> Option<U>

where F: FnMut(&UpdateArgs) -> U,

Calls closure if this is an update event.

Provided Methods

fn from_dt(dt: f64, old_event: &Self) -> Option<Self>

Creates an update event with delta time.

fn update_args(&self) -> Option<UpdateArgs>

Returns update arguments.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl UpdateEvent for Event