CreateParticle problem - GameCreators Forum

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Trisect Development

21

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Joined: 8th Sep 2002

Location: Denmark

Posted: 3rd Oct 2011 16:45 Edited at: 3rd Oct 2011 16:47

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I have this just before my main loop.

+ Code Snippet

REM ** Create particle explosion
ExplosionOneOn = 0
ExplosionForBricksOne = 10
explImage = LoadImage ( "shrapnel3.png" )
CreateParticles(ExplosionForBricksOne, -100, -100 )

And on keypress I do this.

+ Code Snippet

REM ** Explosion
if ExplosionOneOn = 0
    createExplosionOne(100,100)
endif

This is my createExplosionOne function.

Function createExplosionOne(xpos, ypos)

SetParticlesPosition(ExplosionForBricksOne, xpos, ypos )
    ResetParticleCount ( ExplosionForBricksOne )
    SetParticlesFrequency ( ExplosionForBricksOne, 250 )
    SetParticlesLife ( ExplosionForBricksOne, 1.0 )
    SetParticlesSize ( ExplosionForBricksOne, 32 )
    SetParticlesStartZone ( ExplosionForBricksOne, xpos, ypos, xpos+50, ypos+50 )
    SetParticlesImage ( ExplosionForBricksOne, explImage )
    SetParticlesDirection ( ExplosionForBricksOne, xpos, ypos )
    SetParticlesAngle ( ExplosionForBricksOne, 360 )
    SetParticlesVelocityRange ( ExplosionForBricksOne, 0.8, 2.5 )
    SetParticlesMax ( ExplosionForBricksOne, 250 )
    AddParticlesColorKeyFrame ( ExplosionForBricksOne, 0.0, 0, 0, 0, 0 )
    AddParticlesColorKeyFrame ( ExplosionForBrickOne, 0.5, 255, 255, 0, 255 )
    AddParticlesColorKeyFrame ( ExplosionForBricksOne, 2.8, 255, 0, 0, 0 )
    AddParticlesForce ( ExplosionForBricksOne, 2.0, 2.8, 25, -25 )
    ExplosionOneOn = 1
Endfunction

+ Code Snippet

Function createExplosionOne(xpos, ypos)

    SetParticlesPosition(ExplosionForBricksOne, xpos, ypos )
    ResetParticleCount ( ExplosionForBricksOne )
    SetParticlesFrequency ( ExplosionForBricksOne, 250 )
    SetParticlesLife ( ExplosionForBricksOne, 1.0 )
    SetParticlesSize ( ExplosionForBricksOne, 32 )
    SetParticlesStartZone ( ExplosionForBricksOne, xpos, ypos, xpos+50, ypos+50 )
    SetParticlesImage ( ExplosionForBricksOne, explImage )
    SetParticlesDirection ( ExplosionForBricksOne, xpos, ypos )
    SetParticlesAngle ( ExplosionForBricksOne, 360 )
    SetParticlesVelocityRange ( ExplosionForBricksOne, 0.8, 2.5 )
    SetParticlesMax ( ExplosionForBricksOne, 250 )
    AddParticlesColorKeyFrame ( ExplosionForBricksOne, 0.0, 0, 0, 0, 0 )
    AddParticlesColorKeyFrame ( ExplosionForBrickOne, 0.5, 255, 255, 0, 255 )
    AddParticlesColorKeyFrame ( ExplosionForBricksOne, 2.8, 255, 0, 0, 0 )
    AddParticlesForce ( ExplosionForBricksOne, 2.0, 2.8, 25, -25 )
    ExplosionOneOn = 1
Endfunction

And inside my main loop I have this.

+ Code Snippet

if ( GetParticlesMaxReached ( ExplosionForBricksOne ) )
    ExplosionOneOn = 0
endif

I get this error:

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Trisect Development

21

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Joined: 8th Sep 2002

Location: Denmark

Posted: 3rd Oct 2011 16:52

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If I replace ExplosionForBricksOne with 1 in my function it works okay.

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Bursar

15

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Joined: 17th Sep 2008

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Posted: 3rd Oct 2011 18:18

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Try putting GLOBAL in front of your variable declarations. I suspect that your function is creating new local variables.

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Rich Dersheimer

AGK Developer

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Joined: 1st Jul 2009

Location: Inside the box

Posted: 3rd Oct 2011 18:21 Edited at: 3rd Oct 2011 18:21

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I think it's because you are calling a function and the variable needs to be global for the function to see it. Try declaring it as global, see if that works.

EDIT: Damn, Bursar, I turn around for 2 minutes and you ninja me!