···66use measure_time::debug_time;
77use std::sync::mpsc::SyncSender;
8899-pub type EngineController<C: Default> = dyn Fn(&Context<'_, C>) -> EngineControl;
99+pub type EngineController<C> = dyn Fn(&Context<'_, C>) -> EngineControl;
10101111/// What data is sent to the output by the rendering engine for each rendered frame
1212pub enum EngineOutput {