I need help finding a script!!

[Tailsy Loxely]

Hello people! I was making an object today and thought of this cool idea! I wanted this certain object to float up and down like it was levitating! I'm having a hard time finding a script that would fit the bill! I hope someone can help me out! Thank you!

[Thinkerer Melville]

Here are sources of free scripts:

FOXSAN'S 3D TOOLS AND LSL SCRIPT REPOSITORY

http://www.foxsan.com/scripts

THE LSL SCRIPT DATABASE & LIBRARY

http://www.free-lsl-scripts.com/

TKR

[conrad Evanier]

Hi Tailsy try this one out i have been messing about with it and got it to bob up and down in the air if thats what you're after

float h=0.8;   //the hight it bobs up you can change thisfloat m = 0.7;  //0.1 slow bob 0.9 faster bob lolvector pos; float x=0; vector bob; default { state_entry() { llSetBuoyancy(1.0);llSetTimerEvent(0.5);pos=llGetPos() + <0,0,1.5>;llSetStatus(STATUS_PHANTOM , TRUE);llSetStatus(STATUS_PHYSICS , TRUE);} on_rez(integer start){    llResetScript();}timer(){ x+=m;bob = <0,0,llCos(x)*h>;llMoveToTarget(pos+bob,0.8);} }

 

[Ela Talaj]

Why does an object need to be physical to simply move up and down?

Seems server load would be somewhat lighter if just using a regular non-physical object. llMoveToTarget() used to be more visually gracefull than llSetPos() because of 200 msec delay in the latter but since it is now possible to set position via llSetLinkPrimitiveParamFast() with no delay, it is no longer the case.

[conrad Evanier]

Good point Ela i tried llSetLinkPrimitiveParamFast() setpos, but doesn't look as smooth and floating as the physical version but if you played around you could get something similar.  Now where did those boxs shoot off to that i got wrong lol

[Anton Catesby]

You might try playing with the new llSetKeyframedMotion.   That's smoother than llSetPos and other non-physics motion (and a lot kinder on the sim).

[Miranda Umino]

It should be proved that llSetLinkPrimitiveParamsFast will be lighter in THIS paticular case

 

Firstly , the prim doesn t need the collisions . So it s possible to filter out all collisions out with llColisionFilter.

Secondly, there are several ways to move vertically :

• llSetBuoyancy with llMoveToTarget
• llSetHoverHeight and llStopHover
• llGroundRepel
• and the last  llSetPhysicsMaterial( integer material_bits, float gravity_multiplier, float restitution, float friction, float density ) with a very low gravity , sometimes = 0 sometimes negative . You may change the density to change the mass of the object too ( sorry, the wiki page doesn t exist ) 

Each physical function has not the same weight to loead in the server . Probably i would avoid llMoveToTarget.

llSetPhysicsMaterial is great : it consumes very few Energy even with a 64*64*64 prim

 

 

If we just want the effect of levitation but we don t care with exactitude the final height , physics are great . It doesn t a linear movement with constant velocity and so it can be nicer to watch . To add , to have a smooth movement will llSetLinkPrimitiveParams you need to spam and to grow up the number of events per seconds . 

[Rolig Loon]

See the thread right next to this one in the LSL Scripting forum.  In particular, look at Cerise's very simple example of a user defined function that makes use of llSetKeyframedMotion.  The only thing you have to remember if you take this approach is that your object has to be defined in terms of the new Prim Equivalency system.  That means adding

llSetLinkPrimitiveParamsFast(LINK_SET, [PRIM_PHYSICS_SHAPE_TYPE, PRIM_PHYSICS_SHAPE_CONVEX]); 

 to your script before you call Cerise's function.