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-rw-r--r--examples2d/s2d_bridge.rs56
1 files changed, 56 insertions, 0 deletions
diff --git a/examples2d/s2d_bridge.rs b/examples2d/s2d_bridge.rs
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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 mut impulse_joints = ImpulseJointSet::new();
+ let multibody_joints = MultibodyJointSet::new();
+
+ /*
+ * Ground
+ */
+ let ground = bodies.insert(RigidBodyBuilder::fixed());
+
+ /*
+ * Create the bridge.
+ */
+ let density = 20.0;
+ let x_base = -80.0;
+ let count = 160;
+ let mut prev = ground;
+
+ for i in 0..count {
+ let rigid_body = RigidBodyBuilder::dynamic()
+ .linear_damping(0.1)
+ .angular_damping(0.1)
+ .translation(vector![x_base + 0.5 + 1.0 * i as f32, 20.0]);
+ let handle = bodies.insert(rigid_body);
+ let collider = ColliderBuilder::cuboid(0.5, 0.125).density(20.0);
+ colliders.insert_with_parent(collider, handle, &mut bodies);
+
+ let pivot = point![x_base + 1.0 * i as f32, 20.0];
+ let joint = RevoluteJointBuilder::new()
+ .local_anchor1(bodies[prev].position().inverse_transform_point(&pivot))
+ .local_anchor2(bodies[handle].position().inverse_transform_point(&pivot))
+ .contacts_enabled(false);
+ impulse_joints.insert(prev, handle, joint, true);
+ prev = handle;
+ }
+
+ let pivot = point![x_base + 1.0 * count as f32, 20.0];
+ let joint = RevoluteJointBuilder::new()
+ .local_anchor1(bodies[prev].position().inverse_transform_point(&pivot))
+ .local_anchor2(bodies[ground].position().inverse_transform_point(&pivot))
+ .contacts_enabled(false);
+ impulse_joints.insert(prev, ground, joint, true);
+
+ /*
+ * Set up the testbed.
+ */
+ testbed.set_world(bodies, colliders, impulse_joints, multibody_joints);
+ testbed.look_at(point![0.0, 2.5], 20.0);
+}