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use rapier3d::prelude::*;
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 = 20.;
let ground_height = 1.0;
let rigid_body = RigidBodyBuilder::new_static()
.translation(vector![0.0, -ground_height, 0.0])
.build();
let handle = bodies.insert(rigid_body);
let collider = ColliderBuilder::cuboid(ground_size, ground_height, 2.0)
.restitution(1.0)
.build();
colliders.insert_with_parent(collider, handle, &mut bodies);
let num = 10;
let rad = 0.5;
for j in 0..2 {
for i in 0..=num {
let x = (i as f32) - num as f32 / 2.0;
let rigid_body = RigidBodyBuilder::new_dynamic()
.translation(vector![x * 2.0, 10.0 * (j as f32 + 1.0), 0.0])
.build();
let handle = bodies.insert(rigid_body);
let collider = ColliderBuilder::ball(rad)
.restitution((i as f32) / (num as f32))
.build();
colliders.insert_with_parent(collider, handle, &mut bodies);
}
}
/*
* Set up the testbed.
*/
testbed.set_world(bodies, colliders, joints);
testbed.look_at(point![0.0, 3.0, 30.0], point![0.0, 3.0, 0.0]);
}
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