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I have a sound effect that is supposed to only work when the i key is pressed and only once until the character hits the ground. For some reason it always plays when you hit the i key even in the air. Here are my codes.

on collision with the ground.

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in_air=0;

on collision finish of the ground.

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CreateTimer("Jump", 100);

(repeats only once.)

On "Jump" timer.

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in_air=1;

On keydown for jump key.

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if(in_air==1)
{
    PlaySound2("/data/Mario Jump.wav" 0, 0, 1);
}

If anyone can tell me what is wrong please do.

maybe u should have the last code bit like this:

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if(in_air==1)
{
    PlaySound2("/data/Mario Jump.wav" 0, 0, 1)
in_air = 0;
}