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use rapier2d::prelude::*;
use rapier_testbed2d::Testbed;
pub fn init_world(testbed: &mut Testbed) {
/*
* World
*/
let mut bodies = RigidBodySet::new();
let mut colliders = ColliderSet::new();
let impulse_joints = ImpulseJointSet::new();
let multibody_joints = MultibodyJointSet::new();
let origin = vector![100_000.0, -80_000.0];
let friction = 0.6;
/*
* Ground
*/
let rigid_body = RigidBodyBuilder::fixed().translation(vector![0.0, -1.0] + origin);
let ground_handle = bodies.insert(rigid_body);
let collider = ColliderBuilder::cuboid(100.0, 1.0).friction(friction);
colliders.insert_with_parent(collider, ground_handle, &mut bodies);
/*
* Create the cubes
*/
let base_count = 10;
let h = 0.5;
let shift = 1.25 * h;
for i in 0..base_count {
let y = (2.0 * i as f32 + 1.0) * shift + 0.5;
for j in i..base_count {
let x = (i as f32 + 1.0) * shift + 2.0 * (j as f32 - i as f32) * shift
- h * base_count as f32;
let rigid_body = RigidBodyBuilder::dynamic().translation(vector![x, y] + origin);
let ground_handle = bodies.insert(rigid_body);
let collider = ColliderBuilder::cuboid(h, h).friction(friction);
colliders.insert_with_parent(collider, ground_handle, &mut bodies);
}
}
/*
* Set up the testbed.
*/
testbed.set_world(bodies, colliders, impulse_joints, multibody_joints);
testbed.look_at(point![0.0, 2.5] + origin, 20.0);
}
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