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use na::Point3;
use rapier3d::dynamics::{JointSet, RigidBodyBuilder, RigidBodySet};
use rapier3d::geometry::{ColliderBuilder, ColliderSet};
use rapier_testbed3d::Testbed;
pub fn init_world(testbed: &mut Testbed) {
/*
* World
*/
let mut bodies = RigidBodySet::new();
let mut colliders = ColliderSet::new();
let joints = JointSet::new();
/*
* Ground
*/
let ground_size = 200.1;
let ground_height = 0.1;
let rigid_body = RigidBodyBuilder::new_static()
.translation(0.0, -ground_height, 0.0)
.build();
let handle = bodies.insert(rigid_body);
let collider = ColliderBuilder::cuboid(ground_size, ground_height, ground_size).build();
colliders.insert(collider, handle, &mut bodies);
/*
* Create the cubes
*/
let num = 8;
let rad = 1.0;
let shift = rad * 2.0 + rad;
let shifty = rad * 4.0;
let centerx = shift * (num / 2) as f32;
let centery = shift / 2.0;
let centerz = shift * (num / 2) as f32;
let mut offset = -(num as f32) * (rad * 2.0 + rad) * 0.5;
for j in 0usize..47 {
for i in 0..num {
for k in 0usize..num {
let x = i as f32 * shift - centerx + offset;
let y = j as f32 * shifty + centery + 3.0;
let z = k as f32 * shift - centerz + offset;
// Build the rigid body.
let rigid_body = RigidBodyBuilder::new_dynamic().translation(x, y, z).build();
let handle = bodies.insert(rigid_body);
let collider = ColliderBuilder::capsule_y(rad, rad).density(1.0).build();
colliders.insert(collider, handle, &mut bodies);
}
}
offset -= 0.05 * rad * (num as f32 - 1.0);
}
/*
* Set up the testbed.
*/
testbed.set_world(bodies, colliders, joints);
testbed.look_at(Point3::new(100.0, 100.0, 100.0), Point3::origin());
}
fn main() {
let testbed = Testbed::from_builders(0, vec![("Boxes", init_world)]);
testbed.run()
}
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