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use na::Point2;
use rapier2d::dynamics::{JointSet, RigidBodyBuilder, RigidBodySet};
use rapier2d::geometry::{ColliderBuilder, ColliderSet};
use rapier_testbed2d::Testbed;
pub fn init_world(testbed: &mut Testbed) {
let bodies = RigidBodySet::new();
let colliders = ColliderSet::new();
let joints = JointSet::new();
let rad = 0.5;
// Callback that will be executed on the main loop to handle proximities.
testbed.add_callback(move |mut window, mut graphics, physics, _, _| {
let rigid_body = RigidBodyBuilder::new_dynamic()
.translation(0.0, 10.0)
.build();
let handle = physics.bodies.insert(rigid_body);
let collider = ColliderBuilder::cuboid(rad, rad).build();
physics
.colliders
.insert(collider, handle, &mut physics.bodies);
if let (Some(graphics), Some(window)) = (&mut graphics, &mut window) {
graphics.add(*window, handle, &physics.bodies, &physics.colliders);
}
let to_remove: Vec<_> = physics
.bodies
.iter()
.filter(|(_, b)| b.position().translation.vector.y < -10.0)
.map(|e| e.0)
.collect();
for handle in to_remove {
physics
.bodies
.remove(handle, &mut physics.colliders, &mut physics.joints);
if let (Some(graphics), Some(window)) = (&mut graphics, &mut window) {
graphics.remove_body_nodes(*window, handle);
}
}
});
/*
* Set up the testbed.
*/
testbed.set_world(bodies, colliders, joints);
testbed.look_at(Point2::new(0.0, 0.0), 20.0);
}
fn main() {
let testbed = Testbed::from_builders(0, vec![("Add-remove", init_world)]);
testbed.run()
}
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