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DarkBASIC Discussion / Lag problem

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Guitarman
21
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Joined: 31st Jan 2004
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Posted: 13th May 2004 21:08
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Ok I was wondering.... I am willing to write large sized programs, but when they get large numbers of objects or long coding it takes a while and lags, even with the sync command. (I use sync 0, so if i can get faster let me know.)
This may be a common or stupid problem, but if someone could please help me.....
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GameKit
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Joined: 6th Mar 2003
Location: USA, Staring Blankly at a Computer
Posted: 15th May 2004 01:12 Edited at: 15th May 2004 01:14
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There are a few things that may be lagging your game...
*Sprites (Especialy in DBClassic)
*High Polygon Models
*2-D Commands
*Large Screen Resolution or High Color Depth

You may want to try this code to speed up your program...

This only works if you have a large amount of objects. If your objects are very large (like one big 3-D level) then I wouldn't recomend this code... Also, If the camera gets too close to an object it might suddenly dissapear...

[Edit]
You might also try adding fog and hiding objects outside of the fog distance...

Well... I hope I helped...

Previously known as "Game_Creator".
The question is, why am I talking to myself? ...... And more importantly, why am I waiting for a reply?
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DARKGuy
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Joined: 28th Nov 2003
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Posted: 15th May 2004 12:42
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or use a different update method and optimize the code a bit (for's, loops and functions), sometimes helps!, not that I've ever programmed an internet game but it's just a logic thing I think...

:: Pentium 300 Mhz, old 8Mb video card, 64Mb RAM, 5 gb & 1.6 gb HD's, W98 SE, Sound Blaster AWE 32 ::
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_Nemesis_
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Location: Liverpool, UK
Posted: 18th May 2004 01:33
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Make sure you're using sync where it is needed. Too many of them will obviously slow your program down.
There should be one at the end of loops.
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Emperor Baal
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Joined: 1st Dec 2003
Location: The Netherlands - Oudenbosch
Posted: 18th May 2004 02:24
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Optimizing works too.

Look at AI for example:


do
group_turn = group_turn + 1
if group_turn = 4 then group_turn = 1

for a=100*group_turn to 100*group_turn+99
`do something with the enemies
next a


sync
loop


instead of checking and moving objects 100-399 real-time, you can seperate them in groups (1,2 and 3). This will run ~3 times faster

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Arkheii
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Joined: 15th Jun 2003
Location: QC, Philippines
Posted: 18th May 2004 03:24 Edited at: 18th May 2004 03:30
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if you have a for loop that checks for 99 objects, do this instead:



I read that in some Intel optimization essay.

Oh, and try to stay away from processor intensive math functions like sqrt() if you are only going to use it to compare 2 values. More often than not you can get away without using it.

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