How to code to prevent mobile device get heated?

Some game running 5 minutes on mobile phone, device got heated and become hot to grab.

When making mobile game, how to code to prevent phone becoming heated?

So how to make code more thinner, light-weight?

Thanks.

 

It usually demanding graphics that cause over heating, try putting in quality options in your menu, low, medium and high for instance where you turn off effects, lower unities quality settings etc

 

First. Unity is a 3d Engine and will always have more overhead compared to low level code or other 2d engines.
In a more general direction on what to make better for optimized performance you have two sides to consider.
The graphic side with a reduction of polygons texture sizes max gameobject count and animations. And everything i have forgotten to list to optimize GPU usage.
The script side with everything that uses the CPU. Here you need to reduce function calls per frame.

You could try to limit to 30 fps or lower when there is no animation playing. You could shortly ramp the fps up if needed ( http://docs.unity3d.com/ScriptReference/Application-targetFrameRate.html )

Another big point is to prevent stuffing code into update().
Only put necessary code like input control and other stuff that needs to react and update on each frame during the scripts whole lifetime into update().
Everything else should be done with coroutines and events/delegates

Following a few interesting links
http://wiki.unity3d.com/index.php?title=General_Performance_Tips
http://forum.unity3d.com/threads/state-machine-coroutine-vs-update.103110/
http://unitypatterns.com/scripting-with-coroutines/
http://www.theappguruz.com/unity/using-delegates-and-events-in-unity/
http://www.paladinstudios.com/2011/11/11/animations-are-evil-performance-rules/

 

Thanks much.

 

Try using this in Update Function:

private float lastCallTime;

void Update()
{
if (Time.time - lastCallTime >=0.2){
UpdateUI ();


CarBlueprint c = cars [currentCarIndex];
if (c.isUnlocked){
amount.text = "".ToString ();
}
}
}


It will help to reduce function calls