Talk:PosJump

The Discovery

According to my investigation, it is possible to do "PosJump" if the result of X^2+Y^2 overflows the limit of float. To give an actual example, vector infinity = <1.304382E+19, 1.304382E+19, 0.0>; can "PosJump". -Fake Fitzgerald 4:48, 20 September 2008 (PDT)

The Future

Given, the standard client lets me sit on an object and then edit that object to move my avatar and the object wherever.

Given, Lsl should be able to do whatever the standard client can do.

Therefore, there should be a documented interface to move the object wherever, or the standard client should stop being able to do this, one or the other. It is then reasonable and good for the community to hope, even to ask by Jira, that the Linden lab folk document some interface.

Q1. All correct?

Q2. If yes, then what interface should we nominate for support?

I'm thinking we can't reasonably ask for support of the interface shown here, where we arbitrarily chose a value that barely overflowed X^2+Y^2 and we arbitrarily zeroed the Z component. Right?

Q3. Should the Infinity we nominate for support be at X = Y = Z = maxFloat?

<lsl> lwSetFarPos(vector there) // http://wiki.secondlife.com/wiki/PosJump http://wiki.secondlife.com/wiki/warpPos https://wiki.secondlife.com/wiki/LSL_llSetPrimitiveParams https://wiki.secondlife.com/wiki/LSL_llSetPos {

   float maxFloat = 3.402823466E+38;
   vector nowhere = <maxFloat, maxFloat, maxFloat>;
   llSetPrimitiveParams([PRIM_POSITION, nowhere, PRIM_POSITION, there, PRIM_POSITION, here, PRIM_POSITION, there]);

} </lsl>

Here we see that the actual interfaces that once did work as explained in this Lsl Wiki run out in advance of what Linden Lab has committed to support long term.

Q4. Should we therefore have some convention to point the reader of the script back into this Wiki for info on how the support or lack of support for those interfaces evolve?

How about lw rather than ll for functions? And something else for constants, such as one here corresponding to C MAX_FLT or Java Float.MAX_VALUE: <lsl> float LW_MAX_FLOAT = 3.402823466E+38; </lsl>

And we could ask the people who coded the LSL /LSL tags of this wiki to learn these lw LW like they know ll, to link LSL examples back into this wiki at those spots?

Q5. Or have we already formed some other convention like lwSetFarPos and LW_MAX_FLOAT?

Q6. I'm new new new. I arrived long ago, but I'm only barely scraping time out of my life for fun like this, so I haven't yet experienced much time in world . Am I making any sense?

Thanks in advance, --- Ppaatt Lynagh 19:27, 24 December 2008 (UTC)