5 replies to this topic

[thisiswaysilly]

Hello GameMaker community, I'm having an interesting problem. I've used GameMaker on and off for years, and recently(last year or so) I've been learning GML. So anyway here is the problem. I'm using this code to increase my character's image_speed as she accelerates

if keyboard_check(left) or keyboard_check(right) && !place_free(x,y+1){
    image_speed=hspeed/20;}

and her running sprite is just her alternating her feet using two images. I have a small step sound and what I'd like to do is have the sound play whenever her image_index chages.
please help.

[stainedofmind]

Try this:

if (image_index = floor(image_index))
{
      sound_play(sndFootStep);
}

[thisiswaysilly]

Try this:

if (image_index = floor(image_index))
{
      sound_play(sndFootStep);
}

thanks, but it didn't quite work. it would rapidly play my sound when i was standing. so i added the variable "run" to detect whether or not she was running but it caused the sound to no longer play at all.

[stainedofmind]

Ah yes. I hadn't taken into consideration that it would continuously play while standing still. It should have worked when you implemented the "run" check, however. Can you post your new code so I can have a look at it?

[IceMetalPunk]

You need to check for when the image_index changes, which means you need to keep track of its previous value. Try this:

/* CREATE */
lastIndex = floor(image_index);

/* STEP */
if (floor(image_index) != lastIndex) {
  sound_play(footstep_snd);
  lastIndex = floor(image_index);
}

-IMP

[thisiswaysilly]

You need to check for when the image_index changes, which means you need to keep track of its previous value. Try this:

/* CREATE */
lastIndex = floor(image_index);

/* STEP */
if (floor(image_index) != lastIndex) {
  sound_play(footstep_snd);
  lastIndex = floor(image_index);
}

-IMP

Thank you so much! I knew I needed to keep track of the previous value, but I wasn't sure how to approach the problem. This is a wonderful solution. Many thanks to both of you.