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use super::*; mod manager; pub use manager::*; pub enum Transition { Pop, Switch(Box<dyn State>), Push(Box<dyn State>), } pub trait State: 'static { #[allow(unused_variables)] fn update(&mut self, delta_time: f64) {} fn draw(&mut self, framebuffer: &mut ugli::Framebuffer); #[allow(unused_variables)] fn handle_event(&mut self, event: Event) {} fn transition(&mut self) -> Option<Transition> { None } } pub struct EmptyState; impl State for EmptyState { fn draw(&mut self, framebuffer: &mut ugli::Framebuffer) { #![allow(unused_variables)] } } impl<T: State + ?Sized> State for Box<T> { fn update(&mut self, delta_time: f64) { <T as State>::update(self, delta_time); } fn draw(&mut self, framebuffer: &mut ugli::Framebuffer) { <T as State>::draw(self, framebuffer); } fn handle_event(&mut self, event: Event) { <T as State>::handle_event(self, event); } fn transition(&mut self) -> Option<Transition> { <T as State>::transition(self) } }