ZDoom

Anyway, with this solution you will have to add redundant data to the mod where 4 sprites per frame would already be enough

Actually, Gez suggested 5 angles for the front and back, and 3 for each side, like below. It's still not as accurate as 4 exact angles, but it isn't off-center.

[img]http://imgur.com/V46lC.png[/img]

[quote="Gez"]Anyway, you can use the TEXTURES lump to do the duplication and provide 16 rotations from 4 pictures, giving you more precision. See [wiki=Sprite#Angles]sprite angles[/wiki]: front rotation 1 -> 8, G, 1, 9, 2; 3 -> A, 3, B; 5 -> 4, C, 5, D, 6; 7 -> E, 7, F.[/quote]
Actually, Gez, that's not going to work. If it did, then this suggestion would be redundant!

Here is a graph which illustrates the problem:

[img]http://i759.photobucket.com/albums/xx238/Salad_Viking/proffesional_graph.jpg[/img]

Red represents the frontal-view sprite, blue represents the right-side sprite, and so on. As you can see, using four sprites multiple times on an 8- or 16-sprite rotation causes the rotation to be "tilted," which will make the sprite look as if it's always facing at an angle. If you look at the far right-hand graph, though, you can see how this feature would alleviate the problem.

You're making something with only 4 directions, and you're worried about "accuracy"? :?

Yes, Gez, but the problem is that there is inevitably some inaccuracy with that method.

[quote="InsanityBringer"]I don't really see why we would need to add additional letters for it. if a sprite provides 1,2,3,4 but not 5,6,7,8 then shouldn't it recognize that the sprite has only four rotations?[/quote]
You mean 1, 3, 5, 7 but not 2, 4, 6, 8.

Anyway, you can use the TEXTURES lump to do the duplication and provide 16 rotations from 4 pictures, giving you more precision. See [wiki=Sprite#Angles]sprite angles[/wiki]: front rotation 1 -> 8, G, 1, 9, 2; 3 -> A, 3, B; 5 -> 4, C, 5, D, 6; 7 -> E, 7, F.

Yes, PO2 is best I think.

I wouldn't think it would be hard to do any number as long as it's a power (maybe multiple, though I can see that being more complicated) of two.

Honestly, keeping it at 16, 8, 4, maybe 2, and 1 seems more appropriate. 2 has very limited use, yes, but more than 3.

Also, could that work for any number of angles? Like 12 angle sprites, 7 angle sprites if you wanted.

[quote="InsanityBringer"]I don't really see why we would need to add additional letters for it. if a sprite provides 1,2,3,4 but not 5,6,7,8 then shouldn't it recognize that the sprite has only four rotations?[/quote]Pretty much what I thought.

Besides, I'd also like to hold out for a possible addition of 16 more angles in the future, in which case we'd need those letters. :P

I don't really see why we would need to add additional letters for it. if a sprite provides 1,2,3,4 but not 5,6,7,8 then shouldn't it recognize that the sprite has only four rotations?

Yeah, that sounds good.

I agree this would be nice. Perhaps it could use the letters H I J K, after the end of the 16 angle names?

It doesn't seem like it would be too hard to do, and it would be somewhat useful. The problem is, it that with duplicating it to 8 or 16 angles, the actor looks like it's facing 45 or 22.5 degrees from what it actually is. The only work around I can think of is to have another actor spawn and fix it's displayed angle by offsetting it from what the main actor's is, and locking it onto it's position.