LSL rotate script: smooth spinning object

A spinning sign or turning product stand catches the eye. This rotate script uses smooth client-side rotation: each viewer draws the spin itself, so it looks fluid and puts almost no load on the region.

lsl-rotate-script.lsl · 31 lines Check this script

// Smooth Rotation (spin) - free LSL script from WhatSL (https://whatsl.com/scripts/lsl-rotate-script)
// Free to use, change and put in your own creations, also ones you sell.
//
// Makes the object spin smoothly, for example a sign, a fan or a display stand.
// The spin is drawn by each viewer, so it costs the region almost nothing.

vector  SPIN_AXIS    = <0.0, 0.0, 1.0>;  // <0,0,1> = turn around the up axis like a turntable
float   SPIN_SPEED   = 0.5;              // radians per second; a negative number turns the other way
integer TOUCH_TOGGLE = TRUE;             // TRUE = touch to start and stop

integer gOn = TRUE;

spin(integer on)
{
    if (on) llTargetOmega(SPIN_AXIS, SPIN_SPEED, 1.0);
    else llTargetOmega(SPIN_AXIS, 0.0, 0.0);
    gOn = on;
}

default
{
    state_entry()
    {
        spin(TRUE);
    }

    touch_start(integer total)
    {
        if (TOUCH_TOGGLE) spin(!gOn);
    }
}

Free to use, change and put in your own creations, also ones you sell.

How to set it up

Put the script in the object you want to spin and save. It starts turning right away.
Change SPIN_AXIS if it turns the wrong way round, and SPIN_SPEED to make it faster or slower.
With TOUCH_TOGGLE on, touch the object to stop or start it.

Settings

SPIN_AXIS: the axis to turn around. <0,0,1> turns like a turntable, <1,0,0> rolls like a wheel, <0,1,0> flips forwards.
SPIN_SPEED: radians per second. 0.5 is a calm turn, 3.0 is fast. Negative numbers turn the other way.
TOUCH_TOGGLE: TRUE lets visitors stop and start the spin by touching it.

Tips

In a linked object, put the script in a child prim to spin only that part, such as fan blades or a wheel.
Because each viewer draws the spin, different people can see the object at a slightly different angle. That is normal.

Frequently asked questions

Why does the object jump back when I edit it?

Smooth rotation is only drawn by viewers; the object's real rotation does not change. When you edit it, you see its real rotation.

How do I stop the spin for good?

Set SPIN_SPEED to 0.0 and save, or touch it with TOUCH_TOGGLE on, then delete the script.

Does it work on physical objects?

This script is meant for normal, non-physical objects such as signs and decorations.

float OPEN_ANGLE = 90.0; // degrees to swing; use -90.0 to open the other way float AUTO_CLOSE = 10.0; // seconds before it closes by itself; 0.0 = stay open integer HINGE_SIDE = 1; // 1 = hinge on the +X edge, -1 = hinge on the -X edge string OPEN_SOUND = ""; // optional: a sound name in the door's Contents, or a sound UUID string CLOSE_SOUND = ""; integer gOpen = FALSE; vector gClosedPos; rotation gClosedRot; openDoor()

vector SIT_POS = <0.0, 0.0, 0.5>; // metres from the centre of the object (never use <0,0,0>) vector SIT_ROT = <0.0, 0.0, 0.0>; // degrees, for example <0.0, 0.0, 90.0> to turn the avatar string SIT_TEXT = "Sit"; // the word on the right-click menu integer HIDE_WHEN_USED = FALSE; // TRUE = the object turns invisible while someone sits (pose ball) key gSitter = NULL_KEY; string poseAnim() { return llGetInventoryName(INVENTORY_ANIMATION, 0); }

string THANK_YOU = "Thank you for the tip, %name%!"; // %name% becomes the tipper's name integer PUBLIC_THANKS = TRUE; // TRUE = say thanks in local chat, FALSE = only the tipper sees it integer DEFAULT_AMOUNT = 100; // the amount in the Pay window's box list QUICK_AMOUNTS = [50, 100, 250, 500]; // exactly four quick buttons, in L$ integer CLICK_TO_PAY = TRUE; // TRUE = a left click opens the Pay window vector TEXT_COLOR = <1.0, 0.85, 0.3>; integer gTotal = 0; string gLast = ""; string gOwnerName = "";