dynamicsWorld->addRigidBody(body);
How would something like that work? I never defined a specific size. Does it use a container class from STL?
1
How to store the objects in my world
Started by ic0de, Nov 02 2012 01:25 PM
4 replies to this topic
#1 Members - Reputation: 704
Posted 02 November 2012 - 01:25 PM
Right now in my game engine I store my objects in an array whose size is defined at load time. This is all well and good but what do I do when an object is added during runtime like using some kind of spawner, the array would have to expand and this is slow. Ideally I would have something similar to Bullet Physics where I can do:
How would something like that work? I never defined a specific size. Does it use a container class from STL?
How would something like that work? I never defined a specific size. Does it use a container class from STL?
you know you program too much when you start ending sentences with semicolons;
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#3 Members - Reputation: 429
Posted 02 November 2012 - 02:24 PM
If you're using C++, and not using the STL, you're doing something wrong. Yes yes, there are exceptions to this rule, but if you're in a position to ask a question like this, you are not the
exception.
Anyway, as zacaj said, use an std::vector. Or, perhaps an std::map if you want more convenient and potentially faster lookup.
exception.
Anyway, as zacaj said, use an std::vector. Or, perhaps an std::map if you want more convenient and potentially faster lookup.
#5 Members - Reputation: 841
Posted 02 November 2012 - 02:27 PM
Why do you think that resizing array is slow?
Use std::vector and forget the resizing. I cannot imagine a scenario where this could become bottleneck unless you are doing something very weird. And in the latter case you should fix that weirdness, not worry about vector resizing speed.
Use std::vector and forget the resizing. I cannot imagine a scenario where this could become bottleneck unless you are doing something very weird. And in the latter case you should fix that weirdness, not worry about vector resizing speed.
Lauris Kaplinski
First technology demo of my game Shinya is out: http://lauris.kaplinski.com/shinya
Khayyam 3D - a freeware poser and scene builder application: http://khayyam.kaplinski.com/
First technology demo of my game Shinya is out: http://lauris.kaplinski.com/shinya
Khayyam 3D - a freeware poser and scene builder application: http://khayyam.kaplinski.com/
