Trait piston::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.

Object Safety

This trait is not object safe.

Implementors

impl UpdateEvent for Event