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use std::time::{SystemTime, Duration};
use sdl2::ttf;
use sdl2::render::{Texture, TextureCreator};
use sdl2::pixels::Color;
#[derive(PartialEq)]
pub enum State {
Idle,
Active,
Inactive,
}
pub struct Timer {
pub state: State,
time: SystemTime,
result: Duration,
}
impl Timer {
pub fn new() -> Timer {
Timer {
state: State::Inactive,
time: SystemTime::now(),
result: Duration::new(0, 0),
}
}
pub fn start(&mut self) {
self.time = SystemTime::now();
self.state = State::Active;
}
pub fn stop(&mut self) {
self.result = self.time.elapsed().unwrap();
self.state = State::Inactive;
}
pub fn idle(&mut self) {
self.state = State::Idle;
}
pub fn to_texture<'a, T>(&'a self, font: &ttf::Font, texture_creator: &'a TextureCreator<T>) -> Texture {
let rendered = if self.state == State::Active { self.time.elapsed().unwrap() } else { self.result };
let surface = font.render(&rendered.as_millis().to_string())
.solid(Color::RGB(255, 255, 255))
.unwrap();
texture_creator.create_texture_from_surface(&surface).unwrap()
}
}
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