blob: 61636b9cec378762173000f47b5cdd60f986d8db (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
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();
/*
* Ground
*/
let ground_size = 100.0;
let ground_thickness = 1.0;
let rigid_body = RigidBodyBuilder::new_static().build();
let ground_handle = bodies.insert(rigid_body);
let collider = ColliderBuilder::cuboid(ground_size, ground_thickness).build();
colliders.insert_with_parent(collider, ground_handle, &mut bodies);
/*
* Create the cubes
*/
let num = 100;
let rad = 0.5;
let shift = rad * 2.0;
let centerx = shift * (num as f32) / 2.0;
let centery = shift / 2.0 + ground_thickness + rad * 1.5;
for i in 0usize..num {
for j in i..num {
let fj = j as f32;
let fi = i as f32;
let x = (fi * shift / 2.0) + (fj - fi) * shift - centerx;
let y = fi * shift + centery;
// Build the rigid body.
let rigid_body = RigidBodyBuilder::new_dynamic()
.translation(vector![x, y])
.build();
let handle = bodies.insert(rigid_body);
let collider = ColliderBuilder::cuboid(rad, rad).build();
colliders.insert_with_parent(collider, handle, &mut bodies);
}
}
/*
* Set up the testbed.
*/
testbed.set_world(bodies, colliders, impulse_joints, multibody_joints);
testbed.look_at(point![0.0, 2.5], 5.0);
}
|
