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Old 04-10-2012, 01:10 PM
Gekitatsu Gekitatsu is offline
Join Date: Feb 2012
Posts: 3
viz.collision enabled lag


-City enviorment (Buildings/tress/cars/etc)(As 1.ive file)
-Mainview placed at a location in the city.


Move the camera around the city without being able to move through any objects in the city.


When I add viz.collision(viz.On) to enable collision for MainView my framerate drops to 22 from 60. Anybody have any idea how to bring my framerate back up to 60 with a collision enabled mainview?

-Note The mainview is not linked to any objects.
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Old 04-11-2012, 07:00 AM
Jeff Jeff is offline
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Join Date: Aug 2008
Posts: 2,466
Having a dense mesh can slow things down to a crawl if you try to do collisions with it. Instead it's common to build a much lighter collision mesh (eg, 10k polygons) for collisions. Hide the visibility of the collision mesh and disable collisions on the dense visible mesh.
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Old 04-11-2012, 09:20 AM
farshizzo farshizzo is offline
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Join Date: Mar 2003
Posts: 2,849
Along with using a lower poly mesh for collision tests, you can also use the viz.OPTIMIZE_INTERSECT_HINT flag to speed up collision tests with a particular mesh:
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