Trouble understanding resource loading. Can someone enlighten me?

Hi,

so I am working on this game that has a randomly generated world. It also has different themes for the world. Only one theme is being used at the same time in the game. I put all theme files into the reosurces folder. This is the file structure I am using:

Assets/
- Resources/
- - Themes/
- - - DesertTheme/
- - - - Materials/
- - - - Prefabs/
- - - - Options/
- - - WinterTheme/
- - - - Materials/
- - - - Prefabs/
- - - - Options/
- - - AnotherTheme/
- - - - ...
- - - - and so on...​

My problem with that is: All files are constantly loaded into memory. I want to only have the currently used theme in memory. If i for testing remove all themes but the one that is active from the resources folder, I will save 60mb on my iPhone. Which is a lot.

This is how I am loading the theme stuff:

// Load all prefabs of the desert theme
Resources.LoadAll("Themes/Desert/Prefabs");

// Load specific material
Resources.Load("Themes/Desert/Materials/sand");
​

I tried Resources.UnloadUnusedAssets() but there was no effect.

How do I load only the themes I am actually using into memory?
What might have caused those files to load?

 

*bump*

 

You should try AssetBundles. And because of releasing memory have look here: https://software.intel.com/en-us/blogs/2015/02/05/fix-memory-audio-texture-issues-in-unity

 

Asset bundles are the way to go. They behave in a similar fashion to the resource folder. But you can choose which assets to load, and when.