Question by jonesa01 · May 28, 2012 at 05:21 PM · crash prefabs

Unity Crashes with too many prefabs

Hello,

I am developing a game in unity which involves me making a terrain out of blocks and other objects, however if I ever make the game over around 500x500 which involves instansiating around 250,000 prefabs Unity crashes. If I do 500x500 and instansiate different prefabs in a differnt loop directly after this it works fine.

Is there anyway to stop this from happening or is there a limit to the number of prefabs?

Thanks,

Adam

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You! · May 28, 2012 at 05:43 PM 0

Are you instantiating all of these through scripting? If you are, that would cause the crash, and you may want some of these objects put into the scene manually.

jonesa01 · May 28, 2012 at 06:00 PM 0

I am because the terrain is randomly generated at game load so there was no option to put them in manually.

hijinxbassist · May 28, 2012 at 06:06 PM 0

Are you storing the prefabs in memory, like adding them into an array? $$anonymous$$ight be memory related. Can you see all the prefabs at a given time? You might want to remove prefabs as you go to keep it clean

You! · May 28, 2012 at 06:09 PM 0

Fortunately, you do have an option. If you have a world that large, you obviously will not be able to see all of it at once, even if all parts are instantiated at start up. You can have some of them instantiated right away, and others created when within a certain range of the tile (you can create empty gameobjects to serve as the center points of each tile).

jonesa01 · May 28, 2012 at 06:28 PM 0

I like the idea of adding them as I go, however I have a $$anonymous$$i-map which shows the overview of the whole world (using a second camera) I am not sure how to go about this with setting the prefabs as they are required by the camera.

You! · May 28, 2012 at 07:40 PM 0

Since the camera only renders what it sees (within a certain range), you can make sure that the parts are rendered before it is seen by the camera. If the camera currently covers the whole play area, just have it cover a smaller area (move it in closer).

whydoidoit · May 28, 2012 at 07:44 PM 1

I suggest you have the $$anonymous$$i map look at something else that's smaller - that's going to be a lot of drawing for a map - potentially very slow. As you are procedurally creating your world could you also procedurally create something for the $$anonymous$$imap?

You! · May 28, 2012 at 07:59 PM 0

Great idea, as always, @whydoidoit.

jonesa01 · May 29, 2012 at 01:38 PM 1

Right I think I have solved the problem with the $$anonymous$$imap. I have created another scene which has a terrain (fixed size), I will then instansiate cubes to act as the models (to scale). Then positioned a camera directly looking down on it and set the Y value to be negative so the terrain will be underneath everything else. I then load the $$anonymous$$imap scene by using Application.LoadLevelAdditive. This means I will have exactly what I wanted a 3d landscape which will render as required and a low resolution 2d $$anonymous$$imap.

You! · Jun 05, 2012 at 06:48 AM 0

...I know it's been a while, and the question has been answered, so why don't @whydoidoit or @jonesa01 answer the question? I know the two of you did most of the problem solving on this one, so one of you deserves the credit. Who's going for it?