Question by Mikael-H · May 14, 2015 at 10:15 AM · terrain procedural-terrain terrain gen

Procedural terrain generation - What exactly does Terrain.Flush() do?

I am generating terrains procedurally. At first I thought I should call Flush() after any change but it seems it's not needed for most changes after some testing.

The manual is quite sparse on the subject:

Terrain.Flush

public void Flush();

Description

Flushes any change done in the terrain so it takes effect

So what exactly does it do? I suspect if I don't call it at the right time I may experience strange bugs...

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Owen-Reynolds · May 14, 2015 at 03:50 PM 2

Traditionally, in just regular computers, flush() means: "I know you're saving up these changes and will automatically apply them at some point. I need you to apply them now." Compared to Apply(), which generally means that this is the only way to make changes.

Mikael-H · May 14, 2015 at 08:50 PM 0

Thanks that's a good point! After some experimenting it seems that after changing terrain size and resolution of maps you need to call Flush() to make trees retain their positions. Still I would like to know exactly what it does...