Using a predefined Array vs Objects on the fly

[Anonymous]

How in the world working on a pre-defined array is 100 times slower than collecting it on the fly?

The following script will create a biped and re-apply on each bone its position transform from frame 1 to 100. On the first try I used a pre-defined array and on the second i am collecting on the fly.

The result:

Pre-Defined array took: 1520 miliseconds
Collecting on the fly: 3 miliseconds


here is the code:

(
 local newBip = biped.createnew 100 0 
 local boneList = for i in objects where (classof i) == biped_object collect i
 local timeStart = undefined
 
 timeStart = timestamp()
 for i = 1 to 100 do
 (
 for b in bonelist do at time i biped.settransform b #pos (biped.gettransform b #pos) true
 )
 format "Operation took: % miliseconds \n" ((timestamp()) - timeStart)
 
 
 timeStart = timestamp()
 for i = 1 to 100 do
 (
 for b in objects where (classof i) == biped_object do at time i biped.settransform b #pos (biped.gettransform b #pos) true
 )
 format "Operation took: % miliseconds \n" ((timestamp()) - timeStart)
 
)

[Anonymous]

for b in objects where (classof i) == biped_object

You have a small mistake there (checking the class of i instead of b, always false). Second version isn't collecting anything.
Once this is fixed, this can not be faster than first version.