Angry Bots Optimization

Hey Guys! I think Unity should make a video or documentation about the optimisations performed in Angry Bots. I would love to know how it looks so good and works smoothly even on the low end devices.

It would really help users like me and many others in adapting to some of the methods and optimise their game to work smoothly on low end mobile devices. And they can concentrate on making beautiful games using unity rather than focussing entirely on optimisation before releasing on mobile devices.

Does anyone agrees with me? Please Comment I would love to from you guys.

Thank You.

 

Well .. maybe. I mean sure that would be okay.

But also you have access to the entire project you could .. you know mess around with it and view all the scripts and see for yourself what they did too?

 

9 out of 10 times its fast shaders. Get fast shaders, don't do much culling, batch everything into cells. Minimise fill rate/overdraw.

 

Which shader is the fastest to use for transparency purpose?

 

That means say no no to transparency when developing for mobile devices. And what about scripting and physics performance. I mean some basic tips for optimising physics and scripts.

 

http://unity3d.com/learn/tutorials/modules/intermediate/physics/physics-best-practices

 

Does using transparency in sprites/GUI elements give the same performance problems?
I haven't noticed any performance hits when using images with alphas so far and my test phone is an ancient Galaxy S2.

 

I think it would be interesting to see if we could improve it's performance with further optimisations.

And/or convert it to a horde shooter to stress test Unity.

 

Don't use lights. Lights are expensive.

 

Or polygons. Polygons are expensive.

 

Or mesh colliders. You know what I mean.

 

Best to stay away from GameObjects in general.

 

buy Pro to unlocked all their auto optimisation features

 

I've ran the profiler over Angry Bots and the biggest performance hit (in Profiler Deep Mode) was the Noise Image Effect taking up over 12ms. This generates quads with individual noise texture UV's every frame.

Also a lot of the scripts use transform / renderer / rigidbody without caching the reference, which is bad practice.

Then there are sub-routines that do the same calculations multiple times.

Changing these elements I was able to get the game in Deep Profile mode from around 30fps to over 40fps running in the Editor.

Here's a link to my attempt at an optimised version of Angry Bots based on the 4.0 new version http://dl.dropboxusercontent.com/u/19148487/4-0_AngryBotsNew.zip

Note I have not changed the Vector3 operations to inline maths e.g.

Code (CSharp):

1. Vector3 A = A * B;
2. // vs
3. A.x *= B.x;
4. A.y *= B.y;
5. A.z *= B.z;

The quick Vector3 op multiplier creates a new Vector3, the inline version just updates the values.