use wgpu::{TextureView, Buffer, BindGroup};
use std::sync::Arc;
use rapier3d::dynamics::{RigidBody, RigidBodyHandle};
use rapier3d::geometry::ColliderHandle;
use rapier3d::geometry::Collider as r3dCollider;
use std::time::{Duration, Instant};
use cgmath::Deg;

// a component is any type that is 'static, sized, send and sync

#[derive(Clone, Copy, Debug, PartialEq)]
pub struct LoopState {
    pub delta_time: Duration,
    pub start_time: Instant,
    pub step_size: f32,
}

#[derive(Clone, Copy, Debug, PartialEq)]
pub struct Position {
    pub x: f32,
    pub y: f32,
    pub z: f32,
    pub rot: cgmath::Euler<Deg<f32>>,
}

#[derive(Clone, Copy, Debug, PartialEq)]
pub struct Color {
    pub r: f32,
    pub g: f32,
    pub b: f32,
    pub a: f32,
}

#[derive(Clone, Copy, Debug, PartialEq)]
pub struct Velocity {
    pub dx: f32,
    pub dy: f32,
    pub rs: f32,
}

#[derive(Clone, Default, PartialEq, Eq, Hash, Copy, Debug)]
pub struct RangeCopy<Idx> {
    pub start: Idx,
    pub end: Idx,
}



#[derive(Clone, Debug)]
pub struct Mesh {
    pub index_buffer: Arc<Buffer>,
    pub index_count: usize,
    pub index_format: wgpu::IndexFormat,
    pub vertex_buffer: Arc<Buffer>,
    pub uniform_buffer: Arc<Buffer>,
    pub bind_group: Arc<BindGroup>,
}

#[derive(Clone, Debug)]
pub struct Physics {
    pub rigid_body: RigidBody,
    pub rigid_body_handle: Option<RigidBodyHandle>,
}

#[derive(Clone)]
pub struct Collider {
    pub collider: r3dCollider,
    pub collider_handle: Option<ColliderHandle>,
}