Searching a fastest code

Game Engine Game Engine Support and Discussion
1

HI

I made a simple speed test .blend file to test & find a best way to design & optimize my code.

So far IPO is the fastest method, but unfortunately I can’t use it in this way in run-time/.exe

“”"
BGE CODE SPEED TEST

Calculating the CL values with 0.0001 degrees AOA step. 1800000 calculations

Move cursor to on 3D view.
Start the test by hiting the P-key.
wait until the ‘OBCube.tt’ shows the result.

Test PC
Operating System: Windows XP Home Edition SP3
Processor: Intel® Core™2 Quad CPU Q9300 @ 2.50GHz (4 CPUs)
Memory: 3328MB RAM
Page File: 586MB used, 4624MB available

Results
script time(sec float)

C1 ~6.5
C2 ~3.0 # IPO-bezier
C2 ~2.8 # IPO-linear

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Attachments

Speed_test011.blend (121 KB)

screene.jpg1023×779 105 KB

2

For computationally heavy operations you might consider developing a C library with a python interface, you can make it portable enough to run in all platforms blender runs on and include it with your packaged game. Just an idea…

3

How did you get the time each script took to run? Using the python time module? Is that an efficient way to benchmark code? I would like to test which parts of my code is heavier but I’m not sure what’s the best way to procede :S

4

What is the problem with IPO?

5

Because this code only works in .blend but not in runtime .exe.


from Blender import Ipo # this don't work

import GameLogic as g
obj = g.getCurrentController().owner

if hasattr (obj, 'int') == False:
    obj.int=1
    ipo = Ipo.Get('ObIpo')
    obj.icu = ipo[Ipo.OB_ROTX]

i_x = 10.0

i_y = obj.icu[i_x]
6

Ah, I see. Yes, the module Blender is not available in runtime.

For what do you need that 1800000 pre-calculated data elements?
Maybe it is better to explain what you want to achive. There are usually multiple solutions.

7

Those 1800000 calculations are only for the function timing tests.

I’m looking a fast python method for the linear interpolation with given afp-data function of aoa (-+90degree).

8

OK. I have to say, I do not know what afp and aoa is, so I can’t help with this.

Linear interpolation itself should be cheap. It might be ok to calculate the actual value when it is needed.