work on physics begun

rapier/physics.rs

@@ -0,0 +1,50 @@
+
+/* 
+ * 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
+}