blast-stress-solver 0.4.0

Blast stress solver for destructible structures, with optional Rapier3D integration
Documentation 
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use rapier3d::prelude::*;

#[derive(Clone, Copy, Debug)]
pub struct ResimulationOptions {
    pub enabled: bool,
    pub max_passes: usize,
}

impl Default for ResimulationOptions {
    fn default() -> Self {
        Self {
            enabled: false,
            max_passes: 0,
        }
    }
}

#[derive(Clone, Copy, Debug)]
struct BodySnapshot {
    handle: RigidBodyHandle,
    position: Isometry<Real>,
    linvel: Vector<Real>,
    angvel: AngVector<Real>,
    linear_damping: Real,
    angular_damping: Real,
    user_force: Vector<Real>,
    user_torque: AngVector<Real>,
    sleeping: bool,
    enabled: bool,
}

#[derive(Clone, Debug, Default)]
pub struct BodySnapshots {
    bodies: Vec<BodySnapshot>,
}

impl BodySnapshots {
    pub fn capture(set: &RigidBodySet) -> Self {
        let bodies = set
            .iter()
            .filter_map(|(handle, body)| {
                if body.is_fixed() {
                    None
                } else {
                    Some(BodySnapshot {
                        handle,
                        position: *body.position(),
                        linvel: *body.linvel(),
                        angvel: *body.angvel(),
                        linear_damping: body.linear_damping(),
                        angular_damping: body.angular_damping(),
                        user_force: body.user_force(),
                        user_torque: body.user_torque(),
                        sleeping: body.is_sleeping(),
                        enabled: body.is_enabled(),
                    })
                }
            })
            .collect();
        Self { bodies }
    }

    pub fn restore(&self, set: &mut RigidBodySet) {
        for snapshot in &self.bodies {
            let Some(body) = set.get_mut(snapshot.handle) else {
                continue;
            };
            body.set_enabled(snapshot.enabled);
            body.set_position(snapshot.position, true);
            body.set_linvel(snapshot.linvel, true);
            body.set_angvel(snapshot.angvel, true);
            body.set_linear_damping(snapshot.linear_damping);
            body.set_angular_damping(snapshot.angular_damping);
            body.reset_forces(true);
            body.reset_torques(true);
            if snapshot.user_force.norm_squared() > 0.0 {
                body.add_force(snapshot.user_force, true);
            }
            if snapshot.user_torque.norm_squared() > 0.0 {
                body.add_torque(snapshot.user_torque, true);
            }
            if snapshot.sleeping {
                body.sleep();
            } else {
                body.wake_up(true);
            }
        }
    }
}