Performance optimization for mobile

Hi everybody.

I made a 2d runner game with simple mechanics. It works nicely on windows but really has poor performance on tablet Android Lenovo Tab4.

I don't know why.

Is someone can help me with advices?

How does it work with assets? Are they really killed when they are out the screen?

Do I have to create a camera?

We won't really know until you share your APK file for us to test. I can test on my Samsung Galaxy S9 phone if you want.

I would say reduce the size of your BG 3000x800.

Is your background a single image? You'll be tanking your GPU; most mobile devices cap their texture limits at a single 4k image. Definitely look at tilemaps.

I use only 16x16px assets for all the game. My background uses a color and tiles.

I use tilemap for all the background elements: ground, tomb, lava...

The scene is 3000x800px, because it's a runner game. Is there a best way to make it ?

See Performance tips.

Thanks a lot for your help. ^^

My project is a pretty little game. I thought it can run on low-end device without problems. I was wrong. ^^

Do you know if Contruct is calculating every tick for every element of the scene or only for those visible on the screen?

At my office, I work with Unity and it calculates only for elements visible by the camera. I don't know if Construct does the same.

Is there a camera system on Construct? Do I make one for my game?

C3 wont render things that aren't on the screen, but that doesn't stop other things like collision checks.

"Is on screen" would be the condition you might check out.

Great. I saw that on the « performance tips », but does it mean that I can use à verry large scene ex: 10000x800px, without impacting performance?

Sure, but if that means you have hundreds, or thousands of objects, that may bring performance down.

By contrast, a game can be infinite, and have little to no impact on performance.

It all depends on how you set it up.