Enum ForceField 

pub enum ForceField {
    Directional {
        direction: Vec3Fix,
        strength: Fix128,
    },
    Point {
        center: Vec3Fix,
        strength: Fix128,
        repulsive: bool,
        max_force: Fix128,
    },
    Drag {
        coefficient: Fix128,
    },
    Buoyancy {
        surface_y: Fix128,
        density: Fix128,
        drag: Fix128,
    },
    Vortex {
        center: Vec3Fix,
        axis: Vec3Fix,
        strength: Fix128,
        falloff_radius: Fix128,
    },
    Explosion {
        center: Vec3Fix,
        strength: Fix128,
        radius: Fix128,
        falloff_power: Fix128,
    },
    Magnetic {
        position: Vec3Fix,
        moment: Vec3Fix,
        strength: Fix128,
    },
}

Force field type

Variants

Directional

Constant directional force (e.g., wind)

Fields

direction: Vec3Fix

Force direction (normalized)

strength: Fix128

Force magnitude

Point

Point attractor/repulsor (gravity well)

Fields

center: Vec3Fix

Attractor center position

strength: Fix128

Attraction strength

repulsive: bool

If true, force pushes away from center (explosion)

max_force: Fix128

Maximum force (prevents singularity near center)

Drag

Linear drag (velocity-proportional resistance)

Fields

coefficient: Fix128

Drag coefficient

Buoyancy

Buoyancy (upward force below a surface level)

Fields

surface_y: Fix128

Water surface Y coordinate

density: Fix128

Fluid density

drag: Fix128

Fluid drag coefficient

Vortex

Vortex (rotational force around an axis)

Fields

center: Vec3Fix

Vortex center position

axis: Vec3Fix

Vortex rotation axis

strength: Fix128

Rotational strength

falloff_radius: Fix128

Radius beyond which force falls off

Explosion

Explosion (radial impulse with distance falloff)

Force: strength * (1 - dist/radius)^falloff_power directed away from center. Zero force beyond radius.

Fields

center: Vec3Fix

Explosion center position

strength: Fix128

Peak force strength at center

radius: Fix128

Maximum blast radius (zero force beyond this distance)

falloff_power: Fix128

Falloff exponent (1 = linear, 2 = quadratic, etc.)

Magnetic

Magnetic dipole field approximation

Simplified dipole model: F = -strength / r^3 * (r_hat . m_hat) * m_hat, with r_hat pointing from position to the body. The force lies along the dipole axis (moment); for a positive strength a body on the axis is pulled toward the dipole from either side, and the force vanishes in the equatorial plane. Only the direction of moment is used.

Fields

position: Vec3Fix

Dipole position in world space

moment: Vec3Fix

Dipole moment direction (normalized direction of the magnetic field)

strength: Fix128

Overall field strength multiplier

Trait Implementations

impl Clone for ForceField

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for ForceField

impl Debug for ForceField

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for ForceField

impl PartialEq for ForceField

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ForceField