/* 
 * Rapier bindings are defined here
 */
#![allow(nonstandard_style)]

macro_rules! V_malloc {
    ($t:ty, $count:expr) => { 
        malloc(size_of::<$t>() * $count) as *mut $t
    };
}

use std::ptr::{self, null};
use std::mem::transmute;

use parry3d::shape::{Shape, ShapeType};
use rapier3d::geometry::Ball;
use libc::{malloc, free};

#[repr(C)]
pub struct BallShape_t
{
    m_fRadius: f32,
}


pub struct RapierShape_t
{
    m_eType: ShapeType,
    m_shape: *mut dyn Shape,
}

pub struct RapierPhysics
{

}


#[unsafe(no_mangle)]
pub unsafe extern "C" fn CRapierPhysics_CreateBall( ball: BallShape_t ) -> *mut RapierShape_t
{
    let rapierShape = Ball::new(ball.m_fRadius);
    let rapierShapeMemory: *mut Ball = V_malloc!(Ball, 1);
    *rapierShapeMemory = rapierShape;

    let shape: RapierShape_t = RapierShape_t { m_eType: ShapeType::Ball, m_shape: rapierShapeMemory };
    let shapeMemory: *mut RapierShape_t = V_malloc!(RapierShape_t, 1);
    *shapeMemory = shape;
    shapeMemory
}