Constraints Actuator

See also

See the Python reference of this logic brick in SCA_ConstraintActuator.

The Constraints Actuator adds a constraint to the location or orientation of an object. This is useful for controlling the physics of the object in-game.

../../../../_images/logic-actuators-types-constraint-constraint.png

Constraint Actuator.

Properties

Constraint Mode

Constraint type to use. Each is described below.

Force Field Constraint

Create a force field buffer zone along one axis of the object.

../../../../_images/logic-actuators-types-constraint-forcefield.png

Force Field Constraint.

Damping

Damping factor of the Fh spring force.

Distance

Height of Fh area.

Rot Fh

Make game object axis parallel to the normal of trigger object.

Direction

Axis in which to create force field (can be + or -, or None).

Force

Force value to be used.

N

When on, use a horizontal spring force on slopes.

M/P

Trigger on another Object will be either Material (M) or Property (P).

Property

Property/Material that triggers the Force Field constraint (blank for all Properties/Materials).

Per

Persistence button: When on, force field constraint always looks at Property/Material; when off, turns itself off if it cannot find the Property/Material.

Time

Number of frames for which constraint remains active.

RotDamp

Damping factor for rotation.

Orientation Constraint

Constrain the specified axis in the Game to a specified direction in the World axis.

../../../../_images/logic-actuators-types-constraint-orientation.png

Orientation Constraint.

Direction

Game axis to be modified (X, Y, Z or none).

Damping

Delay (frames) of the constraint response.

Time

Time (frames) for the constraint to remain active.

Reference Direction

Reference direction (global coordinates) for the specified game axis.

Min Angle

Minimum angle for the axis modification.

Max Angle

Maximum angle for the axis modification.

Distance Constraint

Maintain the distance the Game Object has to be from a surface.

../../../../_images/logic-actuators-types-constraint-distance.png

Distance Constraint.

Direction

Axis Direction (X, Y, Z, -X, -Y, -Z, or None).

L

If on, use local axis (otherwise use World axis).

N

If on, orient the Game Object axis with the mesh normal.

Range

Maximum length of ray used to check for Material/Property on another game object.

Force Distance

Distance to be maintained between object and the Material/Property that triggers the Distance Constraint.

Damping

Delay (frames) of the constraint response.

M/P

Trigger on another Object will be either Material (M) or Property (P).

Property

Property/Material that triggers the Distance Constraint (blank for all Properties/Materials)

Per

Persistence button: When on, Distance Constraint always looks for Property/Material; when off, turns itself off if it cannot find the Property/Material.

Time

Number of frames for which constraint remains active.

Rotation Damping

Damping factor for rotation.

Location Constraint

Limit the position of the Game Object within one World Axis direction. To limit movement within an area or volume, use two or three constraints.

../../../../_images/logic-actuators-types-constraint-location.png

Location Constraint.

Limit

Axis in which to apply limits (LocX, LocY, LocZ or none).

Min

Minimum limit in specified axis (in Blender Units).

Max

Maximum limit in specified axis (in Blender Units).

Damping

Delay (frames) of the constraint.

Examples