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use super::input_query::*;
use std::collections::VecDeque;
/// A fake input used for tests, to simulate user inputs.
#[derive(Debug, Default)]
pub struct FakeInput {
jumps: isize,
steers: VecDeque<f64>,
}
impl FakeInput {
/// New fake input.
///
/// # Examples
///
/// ```
/// use babalcore::*;
///
/// let _fake_input = FakeInput::new();
/// ```
pub fn new() -> FakeInput {
FakeInput::default()
}
/// Push a new jump request.
///
/// # Examples
///
/// ```
/// use babalcore::*;
///
/// let mut fake_input = FakeInput::new();
/// fake_input.push_jump();
/// ```
pub fn push_jump(&mut self) {
self.jumps += 1;
}
/// Push a new steer command.
///
/// # Examples
///
/// ```
/// use babalcore::*;
///
/// let mut fake_input = FakeInput::new();
/// fake_input.push_steer(0.1);
/// fake_input.push_steer(-100.0);
/// ```
pub fn push_steer(&mut self, steer: f64) {
self.steers.push_back(steer);
}
}
impl InputQuery for FakeInput {
/// Test whether a push request has been pushed.
///
/// # Examples
///
/// ```
/// use babalcore::*;
///
/// let mut fake_input = FakeInput::new();
/// assert!(!fake_input.pop_jump());
/// fake_input.push_jump();
/// assert!(fake_input.pop_jump());
/// assert!(!fake_input.pop_jump());
/// ```
fn pop_jump(&mut self) -> bool {
if self.jumps > 0 {
self.jumps -= 1;
return true;
}
false
}
/// Pop steer commands.
///
/// # Examples
///
/// ```
/// use babalcore::*;
///
/// let mut fake_input = FakeInput::new();
/// assert_eq!(0.0, fake_input.pop_steer());
/// fake_input.push_steer(1.0);
/// fake_input.push_steer(-3.0);
/// assert_eq!(1.0, fake_input.pop_steer());
/// assert_eq!(-3.0, fake_input.pop_steer());
/// assert_eq!(0.0, fake_input.pop_steer());
/// ```
fn pop_steer(&mut self) -> f64 {
match self.steers.pop_front() {
Some(f) => f,
None => 0.0,
}
}
}