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authorSébastien Crozet <developer@crozet.re>2020-08-25 22:10:25 +0200
committerSébastien Crozet <developer@crozet.re>2020-08-25 22:10:25 +0200
commit754a48b7ff6d8c58b1ee08651e60112900b60455 (patch)
tree7d777a6c003f1f5d8f8d24f533f35a95a88957fe /examples2d/balls2.rs
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First public release of Rapier.v0.1.0
Diffstat (limited to 'examples2d/balls2.rs')
-rw-r--r--examples2d/balls2.rs68
1 files changed, 68 insertions, 0 deletions
diff --git a/examples2d/balls2.rs b/examples2d/balls2.rs
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+use na::Point2;
+use rapier2d::dynamics::{BodyStatus, JointSet, RigidBodyBuilder, RigidBodySet};
+use rapier2d::geometry::{ColliderBuilder, ColliderSet};
+use rapier_testbed2d::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 = 25.0;
+
+ /*
+ let ground_shape = ShapeHandle::new(Cuboid::new(Vector2::new(ground_size, 1.0)));
+
+ let ground_handle = bodies.insert(Ground::new());
+ let co = ColliderDesc::new(ground_shape)
+ .translation(-Vector2::y())
+ .build(BodyPartHandle(ground_handle, 0));
+ colliders.insert(co);
+ */
+
+ /*
+ * Create the balls
+ */
+ let num = 50;
+ let rad = 1.0;
+
+ let shiftx = rad * 2.5;
+ let shifty = rad * 2.0;
+ let centerx = shiftx * (num as f32) / 2.0;
+ let centery = shifty / 2.0;
+
+ for i in 0..num {
+ for j in 0usize..num * 5 {
+ let x = i as f32 * shiftx - centerx;
+ let y = j as f32 * shifty + centery;
+
+ let status = if j == 0 {
+ BodyStatus::Static
+ } else {
+ BodyStatus::Dynamic
+ };
+
+ // Build the rigid body.
+ let rigid_body = RigidBodyBuilder::new(status).translation(x, y).build();
+ let handle = bodies.insert(rigid_body);
+ let collider = ColliderBuilder::ball(rad).density(1.0).build();
+ colliders.insert(collider, handle, &mut bodies);
+ }
+ }
+
+ /*
+ * Set up the testbed.
+ */
+ testbed.set_world(bodies, colliders, joints);
+ testbed.look_at(Point2::new(0.0, 2.5), 5.0);
+}
+
+fn main() {
+ let testbed = Testbed::from_builders(0, vec![("Balls", init_world)]);
+ testbed.run()
+}