use std::cell::RefCell;
use std::ops::Mul;
use std::rc::Rc;
use std::time::Duration;
use skunk2d::{Image, Vec2};
use crate::interpolator::Interpolator;
use crate::unit::Unit;

pub struct UnitKind {
    pub sprite: Rc<Image>,
    pub name: String,
    pub speed: i32,
    pub movement_duration: Duration
}

impl UnitKind {
    pub fn new(name: &str, speed: i32, tick_duration: Duration) -> Rc<Self> {
        UnitKind {
            sprite: Image::load(format!("assets/units/{}.gif", name).as_str()),
            name: name.into(),
            speed,
            movement_duration: tick_duration.mul(speed as u32)
        }.into()
    }

    pub fn spawn(self: Rc<Self>, pos: Vec2<i32>) -> Rc<RefCell<Unit>> {
        RefCell::new(Unit {
            kind: self,
            pos,
            interpolator: Interpolator::fake(),
            old_pos: pos,
            cooldown: 0
        }).into()
    }
}