diff options
Diffstat (limited to 'src/dynamics')
| -rw-r--r-- | src/dynamics/rigid_body.rs | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/src/dynamics/rigid_body.rs b/src/dynamics/rigid_body.rs index a2fcacc..d32ea46 100644 --- a/src/dynamics/rigid_body.rs +++ b/src/dynamics/rigid_body.rs @@ -137,6 +137,15 @@ impl RigidBody { crate::utils::inv(self.mass_properties.inv_mass) } + /// The predicted position of this rigid-body. + /// + /// If this rigid-body is kinematic this value is set by the `set_next_kinematic_position` + /// method and is used for estimating the kinematic body velocity at the next timestep. + /// For non-kinematic bodies, this value is currently unspecified. + pub fn predicted_position(&self) -> &Isometry<f32> { + &self.predicted_position + } + /// Adds a collider to this rigid-body. pub(crate) fn add_collider_internal(&mut self, handle: ColliderHandle, coll: &Collider) { let mass_properties = coll @@ -201,12 +210,17 @@ impl RigidBody { self.position = self.integrate_velocity(dt) * self.position; } - /// Sets the position of this rigid body. + /// Sets the position and `next_kinematic_position` of this rigid body. + /// + /// This will teleport the rigid-body to the specified position/orientation, + /// completely ignoring any physics rule. If this body is kinematic, this will + /// also set the next kinematic position to the same value, effectively + /// resetting to zero the next interpolated velocity of the kinematic body. pub fn set_position(&mut self, pos: Isometry<f32>) { self.position = pos; // TODO: update the predicted position for dynamic bodies too? - if self.is_static() { + if self.is_static() || self.is_kinematic() { self.predicted_position = pos; } } |
