Animations and/or death stone lasers cause fps and physics slowdown

Reported by Iwan Gabovitch on 2012-02-16
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Nikki and the Robots
Medium
shahn

Bug Description

I noticed that ep1-02 (contains approx. 330 laser tiles entirely) is extremely slow on both my computers (Arch Linux 64bit/open source ati driver, Arch Linux 32bit/open source intel driver). I conducted some tests on my desktop (ati) and came to the conclusion that the animated laser tiles affect both physical and fps performance. I created a few minimal levels for stress testing to compare to ep1-02.

lasers visible on game screen:
slowdown/fps/level

40% / 14 fps / ep1-02

 0% / 24 fps / test200lasertiles
 9%/ 10 fps / test300lasertiles
30%/ 5 fps / test400lasertiles

no lasers visible on game screen:
slowdown/fps/level

40% / 18 fps / ep1-02
 0% / 30 fps / ep1-02lasertilesremoved

 0% / 26 fps / test200lasertiles
 8% / 15 fps / test300lasertiles
30% / 10 fps / test400lasertiles

My conclusion is that the animated laser tiles are responsible for both. I imagine this might be because of the following reasons:
* inefficient checks for collision with nikki (merging of 'fail' areas might help, they are to be expected to be straight lines usually)
* no baking of animated tiles (animations that are positioned on the same layer and have identical frame count and delays could have their frames baked)

Iwan Gabovitch (qubodup) on 2012-02-16
Changed in nikki:
importance: Undecided → Medium
assignee: nobody → shahn (shahn)
shahn (shahn) wrote :

This is interesting. I plan to profile this level to see what exactly is going on.

> * inefficient checks for collision with nikki (merging of 'fail' areas might help, they are to be expected to be straight lines usually)

Yes, this might be useful.

> * no baking of animated tiles (animations that are positioned on the same layer and have identical frame count and delays could have their frames baked)

I don't know, if deathstones (static lasers) are baked at all at the moment. Is this issue mainly about deathstones or also about laser robots?

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