Post by Escapade Games in Roll Of The Dice comments

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I basically stored 6 numbers in an array, one corresponding to each colour, and each position in the array corresponding to a face, and whenever the player moved I modified the elements of the array such that they reflected the new rotation. I don't know if this is the best way to do it, but that is what I went with during the jam. Then to find out what number to print, just access the number at the position in the array corresponding to the bottom face.

Now that I think of it, I think it might be possible to get the rotation of the cube as a quaternion, and check against a list of rotations to see which face is face down, but that's just an idea, not sure whether it would work.

TerChapone2 years ago(+1)

Thank you! I thought of a similar system, but then I got side-tracked when I realized the face-down number could have 4 different rotations depending on the cube's state (0 degrees, 90, 180, and 270), and that led to the project's doom. In hindsight, I should've gone for the simple implementation for the jam and then expanded it if necessary.

Anyway, thanks for your time, and once more, good job on the jam!

Igor Konyakhin2 years ago

I answered in the comment above: https://itch.io/post/6346372

Igor Konyakhin2 years ago (1 edit) (+1)

It would work. I implemented dice rotation and face identification with Unity quaternions. The only characteristic each number (1-6) has is it's side normal. No tricky unwrapping and no careful permutation consideration necessary.

When I want to get a face A (e.g. face (0, -1, 0)), I [temp-]rotate all normals with the current quaternion, dot product all with a A and look which one equals 1

Escapade Games2 years ago(+1)

Thanks, that was quite informative.