Movement

Position, rotate, and move objects using scripted motion.

Feature: Movement

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integer llSetRegionPos(vector position)Tries to move the entire object so that its root prim is within 0.1m of the vector position (underground positions are set to ground level). Returns TRUE on success or FALSE on failure.llSetRot(rotation rot)Sets the rotation of the prim to rot. If in a child prim, rot is treated as root-relative; if in the root prim of a non-physical object, rotates the entire object.llSetKeyframedMotion(list keyframes, list options)Smoothly moves a non-physical object between the positions, orientations, and times specified in the keyframes list, configured via options. Collisions with keyframed objects are ignored. An empty keyframes list terminates the motion.

Reference

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35 topic entries

• llApplyImpulse(vector momentum, integer is_local)function

  Applies a linear impulse (momentum) to a physical object. If local is TRUE, the impulse is applied in local coordinates; otherwise, it is applied in global region coordinates.

• llApplyRotationalImpulse(vector force, integer is_local)function

  Applies a rotational impulse (force) to a physical object. If local is TRUE, the rotational impulse is applied in local coordinates; otherwise, it is applied in global region coordinates.

• vector llGetOmega()function

  Returns a vector representing the physical rotation (angular velocity) of the object in radians per second.

• vector llGetTorque()function

  Returns a vector representing the physical torque force currently acting on the object (if the object is physical).

• vector llGetVel()function

  Returns a vector representing the velocity of the object (in meters per second) relative to the global region coordinates. For physical objects, returns the velocity of its center of mass.

• llLookAt(vector target, float strength, float damping)function

  Causes the object to orient its positive Z-axis (up axis) toward the target vector, keeping its positive X-axis (forward axis) below the horizon. Tracks target until llStopLookAt is called or strength is set to 0.0.

• llMoveToTarget(vector target, float tau)function

  Critically damps the physical object's motion to position target in tau seconds. Setting tau to 0.0 stops the critical damping; recommended tau values are greater than 0.2.

• llPushObject(key target, vector impulse, vector ang_impulse, integer is_local)function

  Applies physical impulse (force) and ang_impulse (rotational force) to the specified target avatar or object.

• llRotLookAt(rotation target_direction, float strength, float damping)function

  Causes the object to smoothly rotate to target_direction with a force defined by strength and damping. A strength of 0.0 cancels the rotation target. Rotation is maintained until stopped with llStopLookAt.

• integer llRotTarget(rotation rot, float error)function

  Registers the rotation rot with a leeway tolerance error (in radians) as a target, triggering at_rot_target and not_at_rot_target events. Returns an integer handle to unregister the target via llRotTargetRemove.

• llRotTargetRemove(integer handle)function

  Removes the rotational target specified by the integer handle registered with llRotTarget.

• llSetAgentRot(rotation rot, integer flags)function

  Sets the rotation of the avatar to rot, controlled by flags.

• llSetAngularVelocity(vector initial_omega, integer is_local)function

  Sets the angular velocity of a physical object to initial_omega (mass-independent). If local is TRUE, applied in local coordinates; if FALSE, applied in global coordinates. Has no effect on non-physical objects.

• llSetForce(vector force, integer is_local)function

  Applies a constant linear force to a physical object. If local is TRUE, force is applied relative to local coordinates; if FALSE, applied relative to region coordinates.

• llSetForceAndTorque(vector force, vector torque, integer is_local)function

  Sets both the constant linear force and constant torque acting on a physical object. If local is TRUE, forces are applied in local coordinates; if FALSE, in global coordinates.

• llSetHoverHeight(float height, integer water, float tau)function

  Critically damps the physical object's vertical movement to hover at height (above ground, or above water if water is TRUE) in tau seconds. Do not use with vehicles; call llStopHover to cancel.

• llSetKeyframedMotion(list keyframes, list options)function

  Smoothly moves a non-physical object between the positions, orientations, and times specified in the keyframes list, configured via options. Collisions with keyframed objects are ignored. An empty keyframes list terminates the motion.

• llSetLocalRot(rotation rot)function

  Sets the rotation of a child prim relative to its root prim using rot.

• llSetPos(vector pos)function

  Moves the non-physical object or prim toward the vector pos (up to 10m). If called in a child prim, pos is treated as root-relative; if called from the root prim, the entire object is moved.

• integer llSetRegionPos(vector position)function

  Tries to move the entire object so that its root prim is within 0.1m of the vector position (underground positions are set to ground level). Returns TRUE on success or FALSE on failure.

• llSetRot(rotation rot)function

  Sets the rotation of the prim to rot. If in a child prim, rot is treated as root-relative; if in the root prim of a non-physical object, rotates the entire object.

• llSetTorque(vector torque, integer is_local)function

  Applies a constant torque rotational force to a physical object. If local is TRUE, torque is applied in local coordinates; if FALSE, applied in global coordinates.

• llSetVelocity(vector velocity, integer is_local)function

  Sets the linear velocity of a physical object to velocity. If local is TRUE, velocity is treated as a local directional vector; if FALSE, as a global region directional vector. Has no effect on non-physical objects.

• llStopHover()function

  Stops the hover behavior (such as that initiated by llSetHoverHeight).

• llStopLookAt()function

  Stops causing the object to look at or point toward a target (canceling llLookAt or llRotLookAt).

• llStopMoveToTarget()function

  Stops the critically damped movement of the object toward a target (canceling llMoveToTarget). Use llStopLookAt to stop rotational tracking.

• integer llTarget(vector position, float range)function

  Registers a positional target at position with a leeway radius range. This triggers at_target and not_at_target events. Returns an integer handle to unregister the target via llTargetRemove.

• llTargetOmega(vector axis, float spinrate, float gain)function

  Applies a smooth client-side rotation around the local axis at a rate equal to spinrate multiplied by the magnitude of axis (in radians per second) with a force defined by gain. Set spinrate to 0.0 to cancel.

• llTargetRemove(integer handle)function

  Removes the positional target specified by the integer handle registered with llTarget.

• at_target(integer tnum, vector targetpos, vector ourpos)event

  Triggered when the scripted object's position (ourpos) comes within the defined range of the target position (targetpos) set by llTarget (which returns the associated handle tnum).

• not_at_target()event

  Triggered continuously while the object's position has not yet reached the range of targets set via llTarget.

• at_rot_target(integer handle, rotation targetrot, rotation ourrot)event

  Triggered when the script's rotation (ourrot) comes within a defined angle (error) of the target rotation (targetrot) set by a call to llRotTarget (which returns the associated handle).

• not_at_rot_target()event

  Triggered continuously while the object's rotation is outside the leeway angle of targets set via llRotTarget.

• moving_start()event

  Triggered whenever the physical or moving object containing the script starts moving.

• moving_end()event

  Triggered whenever the physical or moving object containing the script stops moving.