# Re: [Audyssey] game objects in memory

```Hi Cara,

My idea was originally to have an array of pointers to objects defining the
characteristics of the object at that
location. I also thought to have e.g. one wall object andd a lot of pointers to
that one object in the array locations
where the wall should be.
That said, I think you've just convinced me to use the 3d coordination system
with collision detection. :-)
One thing I still have to figure out though, is how to handle something like an
explosion. In the array system I
would've just remove all the pointers along a specific radius. May be one way
is to give every shape in 3d space a
sub-object (another shape) specifying where it's damaged. So you would have a
rectangle-like object representing a wall,
with a circular shape specifying where a mine/projectile struck.
Is there a better way of doing this?```
```
Take care,

Rynhardt

* Cara Quinn <caraqu...@draconisentertainment.com> [101207 23:56]:
> Hi Rynhardt, in theory this sounds good, but I have a couple of questions for
> you.
>
> What data types are you storing in your array? I.E. HOw are you showing that
> there is a wall and not air per se in a particular area? I'm assuming here,
> that we're talking about a full-scale map of the level.
>
> Also, is your player moving in only 1 unit per frame?
>
> I ask these because firstly, it sounds like you're simply treating the world
> as a very large array of described points in essence. (Which begins to sound
> exactly like a 3D coordinate system again) :) The exception being that you
> have labels for each point, which can really unnecessarily inflate the amount
> of data needed to render a map. Even just using a byte of data per
> coordinate, it inflates the map eight times larger than it needs to be rather
> than using a simpler collision-based model.
>
> -And, incidentally, you'll still, in effect, need to use collision detection
> anyway, since the map is full-scale. I.E. if your player is moving at 5
> coordinates per second in a direction but that move rate isn't always the
> same, you'll still need to check to see if the path of the player will come
> into contact with some feature of the map. You'd need some form of collision
> detection for this. -Yes??
>
> game each frame, you could simply use the current room as your bound for
> checking entities. There's no sense checking entities on the other side of
> the map.
>
> Even if you simply used the player's radius instead, and did more detailed
> collision detection based on that, the math to check every entity's position
> in a level really wouldn't be anything for a modern machine.
>
> I like your idea though, using perhaps an array of 8 bit integers, which
> could simply represent a full-scale environment with amazing detail, in the
> sense that one could simply test for a point anywhere on the map and
> instantly know what exactly was there. I.E. A point could contain air, water,
> be solid or not with numerous materials.
>
> I question how much faster or less intensive this would really be in gameplay
> though. -But honestly, I'm not sure it really matters on the scale we're
> talking about here. I.E. we're not even actually rendering any of this in
> graphics so these shapes and structures we're testing against are purely
> hypothetical in the sense that a sphere is simply a 3F coordinate and another
> float for a radius. That's so little data to represent and so little math to
> manage, that it's nothing for a computer these days. -Know what I mean??
>
> I think it's really interesting though, as I've said, as it really sounds
> like your and other's full-scale approach is really beginning to blend with a
> raw 3D coord system anyway. :) I love the idea of symbolic representation of
> 'reality' and vice versa!? woohoo! :)
>
> Have a totally awesome day!?
>
> Smiles,
>
> Cara :)

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