mod physics;

//! This module handles the physics of things and how they interact
//! (and also collisions)
use std::collections::HashMap;
use ulid::Ulid;
/// An entity that has been marked to be interactable by the physics system
//
// None - the corresponding internal structures have not been made to identify this object
// Some(id) - the internal structures that identify this object are stored under/with `id`
#[derive(Debug)]
pub struct PhysicalObject(Option<Ulid>);
pub struct PhysicsSystem {}
/// A description of the state of physical objects
#[derive(Debug, Clone)]
pub struct PhysicsState {
    objects: HashMap<Ulid, PhysicsObject>,
}
impl PhysicsState {
    /// linearly interpolate between two physics states
    pub fn lerp(&self, to: &PhysicsState, alpha: f32) -> PhysicsState {
        let both_exist = self
            .objects
            .iter()
            .filter_map(|(id, oobj)| to.objects.get(id).map(|obj| (id, oobj, obj)));
        let only_self = self
            .objects
            .iter()
            .filter(|(id, _)| !to.objects.contains_key(*id));
        let mut new_objects = HashMap::new();
        // Lerp objects that exist in both states
        for (id, oobj, obj) in both_exist {
            new_objects.insert(*id, oobj.lerp(obj, alpha));
        }
        // Copy objects that exist only in this state
        for (id, obj) in only_self {
            new_objects.insert(*id, obj.clone());
        }
        Self {
            objects: new_objects,
        }
    }
}
/// Physical description of a physics object
#[derive(Debug, Clone)]
pub struct PhysicsObject {}
impl PhysicsObject {
    fn lerp(&self, to: &PhysicsObject, alpha: f32) -> PhysicsObject {
        Self {}
    }
}

[toolchain]
channel = "stable"

ulid = { version = "1.1.2", features = ["serde"] }

 "ulid",

 "web-time",

 "web-time 0.2.4",

 "web-time",

 "web-time 0.2.4",

 "js-sys",

 "wasm-bindgen",

name = "ulid"
version = "1.1.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "34778c17965aa2a08913b57e1f34db9b4a63f5de31768b55bf20d2795f921259"
dependencies = [
 "getrandom",
 "rand",
 "serde",
 "web-time 1.0.0",
]
[[package]]

name = "web-time"
version = "1.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2ee269d72cc29bf77a2c4bc689cc750fb39f5cbd493d2205bbb3f5c7779cf7b0"
dependencies = [
 "js-sys",
 "wasm-bindgen",
]
[[package]]

 "web-time",

 "web-time 0.2.4",