I would look that error up online or on the google play store and see what comes up.

Yeah, I tried that, but haven't been able to find anything yet. Will keep you posted.

I've tried to follow the steps in https://www.scirra.com/tutorials/861/how-to-sign-and-align-your-android-app-apk, but it fails at the end of the upload process in the developer console for Google Play. Has anyone experienced similar issues?

Upload failed

Your APK has been signed with multiple certificates. Please only sign it with one certificate and upload it again.

It seemed to me that all steps in the tutorial were successful.

I have an object which is destructible, meaning when the object is hit by the player I spawn a duplicate of this object which has been designed in Gimp to look destroyed. However, I'm struggling with rotating this towards the point of impact between these two objects. How can I detect where collision between objects occur?

I've tried with something like Set angle to Sprite.XXX.Angle, which works kind of ok, as long as the "front" of the player hits the other object. However, if it is hit from the side of the player, it doesn't look as good.

Has anyone managed to do this? I've been able to do it using variables for time and gainlevel, and then decrease the volume with the Set effect parameter action, but it doesn't seem to do anything when I run the game as an app or previewing over LAN on my Android device.

on start of layout

repeat x times ----> system|create *x_object* on layer *Y* at ( random(LayoutWidth), random(LayoutHeight) )

-EDIT-

Oh sorry, this isn't what you want. You want to create and distribute the objects randomly from within the editor, not at run time. There isn't a way that I know of...

Closest thing for variation purposes is to do what Hardty said.

on start of layout ----> x_object | set position to ( random(LayoutWidth), random(LayoutHeight) )

Actually, I think your first suggestion looks interesting. I haven't seen the Repeat event before. Thanks!

oceldot why not place the object on the layout manually?

Well, it's physically possible of course, but I want to have quite a lot them, and it would be nice if they didn't show up at the same place every time.

I want to generate x objects at layout start spread around the layout randomly. I know how to do the random bit, and I'm also able to create objects every x second, but I want this to happen before the game start, to get a sense of variation.

I would also love to know about this.

H*ly shit that game looks nice. Hope to see more of that soon.

Oh, yes, that's an other thing. You can only have one audio file (which is imported into the music folder) playing at once. I always import everything as sounds!

Yeah, there seems to be some limitations when it comes to mobile. I'm not really sure if doing it this way has any effect performance wise when aiming for publishing as an app, but I would say it seems logical that it shouldn't.

I don't understand, Is there a reason to discard the advanced audio functionality? Compatibility perhaps? If not, it's by far more versatile since you can dynamically sculpt your sound at will, adjusting the same source to get resoults for many different scenarios...

Not at all I'm doing that. I just noticed that music files doesn't seem to be compatible on Android (the effects applied, that is), so I was a bit worried that all my work was for naught, but it seems to be working fine if sound files are used (importing to Sounds folder, not Music folder).

> Thanks guys, I'll play around and see if I can get what I want. As for Reaper, never heard of it. Seems a bit expensive, I think I'll stick to Audacity, but it's always interesting to hear about tools fellow aspiring developers use

>

Reaper's free, unless you're planning on selling your game.

Yeah, I saw that. I'm planning on charging a few cents for the game on Google Play, so it's probably best I use freeware/open source for now.