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DarkBASIC Professional Discussion / IRQ or similar

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JSN
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Posted: 28th Nov 2003 01:40
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On a few PC's, you can have an IRQ (Interrupt Request) which can be a small program running in the background, totally independent of the main code.

Does anyone have any pointers on something similar in DBP?

For example, suppose you have Goodguy (player controled) being chased by Badguy (cpu), is the only way to control what BadGuy does through calling a function within a DO... ...LOOP, or can BadGuy have an IRQ assigned to him?

TIA

~ J ~
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IanM
Retired Moderator
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Posted: 28th Nov 2003 08:52
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Nope, no IRQs or multithreading within DBPro. You have to move it yourself a step at a time in your main loop
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OSX Using Happy Dude
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Posted: 28th Nov 2003 10:04
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You could use IanM's C module system to run your C program as an interrupt which calls DBPro commands...


Mirrors are more fun than television. Well, that was fun, in a not-so-fun sort of way...
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JSN
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Posted: 28th Nov 2003 10:53
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6ugger!

O well, not too bad I guess, right, off to code Mr. Badguy!!!!

~ J ~
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IanM
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Posted: 28th Nov 2003 19:16
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@TCA, not if you don't want your program to crash you wouldn't. The DBP libraries are not coded to allow multithreading
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OSX Using Happy Dude
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Posted: 28th Nov 2003 19:32
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surely a flag in the interrupt routine to prevent multiple calls should be sufficient - something alone the lines of :

if (flag)
{
return;
}

flag=true
DBPro->cls(0);
flag=false;


Mirrors are more fun than television. Well, that was fun, in a not-so-fun sort of way...
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IanM
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Posted: 28th Nov 2003 19:49
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... and if the main DBPro program is rendering, and you decide to change the mesh of an object in your thread?
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OSX Using Happy Dude
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Posted: 28th Nov 2003 20:43 Edited at: 28th Nov 2003 20:45
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...which you wouldn't do anyway, as its not safe. However, things like object movement and such should be okay - probably anything that doesn't modify data.


Mirrors are more fun than television. Well, that was fun, in a not-so-fun sort of way...
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