Is there a way to show progress bar for a long running script?

Questions & Answers
1

I have a pretty big script that takes several seconds to load

I wonder if there is a way to show a progress bar while the user waits

I tried break up the script into several parts with int progress, but the progress go straight from 0 to 100…

2

You need to work with a coroutine, so that the frame can end (avoid freezing). If you don’t, all the process is actually done within one frame, so it’s normal that your value goes from 0 to 100.

Here is how I do:

public class BigProcessMB : MonoBehaviour
{
	public int progress; // 0 - 100

	public void LaunchBigProcess()
	{
		progress = 0;
		StartCoroutine(DoBigProcess());
	}

	public IEnumerator DoBigProcess()
	{
		// Do stuff
		progress = 10;
		yield return null;
		// Do stuff
		progress = 20;
		yield return null;
		// etc.
	}
}

More about coroutines here: Unity - Manual: Coroutines