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use std::collections::HashMap;
use minifb::{Key, Window};
use slog::Logger;
use crate::error::TracerError;
pub enum KeyEvent {
Release,
Down,
}
type Callback<'func> = Box<dyn Fn(f64) -> Result<(), TracerError> + Send + Sync + 'func>;
pub type KeyCallback<'func> = (KeyEvent, Key, Callback<'func>);
pub struct KeyInputs<'func> {
is_down_callbacks: HashMap<Key, Vec<Callback<'func>>>,
is_released_callbacks: HashMap<Key, Vec<Callback<'func>>>,
log: Logger,
}
impl<'func, 'window> KeyInputs<'func> {
pub fn new(log: Logger) -> Self {
KeyInputs {
is_down_callbacks: HashMap::new(),
is_released_callbacks: HashMap::new(),
log,
}
}
pub fn input(
event: KeyEvent,
key: Key,
callback: impl Fn(f64) -> Result<(), TracerError> + Send + Sync + 'func,
) -> KeyCallback<'func> {
(event, key, Box::new(callback))
}
pub fn register_inputs(&mut self, inputs: Vec<KeyCallback<'func>>) {
inputs.into_iter().for_each(|(ev, key, closure)| match ev {
KeyEvent::Release => {
let callbacks = self
.is_released_callbacks
.entry(key)
.or_insert_with(Vec::new);
callbacks.push(closure);
}
KeyEvent::Down => {
let callbacks = self.is_down_callbacks.entry(key).or_insert_with(Vec::new);
callbacks.push(closure);
}
})
}
#[allow(dead_code)]
pub fn release(
&mut self,
key: Key,
closure: impl Fn(f64) -> Result<(), TracerError> + Send + Sync + 'func,
) {
let callbacks = self
.is_released_callbacks
.entry(key)
.or_insert_with(Vec::new);
callbacks.push(Box::new(closure));
}
#[allow(dead_code)]
pub fn down(
&mut self,
key: Key,
closure: impl Fn(f64) -> Result<(), TracerError> + Send + Sync + 'func,
) {
let callbacks = self.is_down_callbacks.entry(key).or_insert_with(Vec::new);
callbacks.push(Box::new(closure));
}
pub fn update(&self, window: &'window Window, dt: f64) {
self.is_down_callbacks
.iter()
.filter(|(key, _callbacks)| window.is_key_down(**key))
.for_each(|(_key, callbacks)| {
callbacks.iter().for_each(|callback| {
if let Err(e) = callback(dt) {
error!(self.log, "Key callback error: {}", e);
}
})
});
self.is_released_callbacks
.iter()
.filter(|(key, _callbacks)| window.is_key_released(**key))
.for_each(|(_key, callbacks)| {
callbacks.iter().for_each(|callback| {
if let Err(e) = callback(dt) {
error!(self.log, "Key callback error: {}", e);
}
})
});
}
}
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