Make music puzzle altars customisable

[wjt]

The idea we hatched is that each altar should have 3 animations:

1. The idle animation (which in the current puzzle would be a single frame, with the symbol precomposed onto the altar)
2. The interact animation (optional, not present in the current puzzle)
3. The "solved" animation (which in the current puzzle would have the lit-up symbol, fire animation, and altar precomposed)

[wjt]

One problem here is going to be that the template sign:

has rather different dimensions than the current altar. I'll see what happens.

[manuq]

Yeah the "different dimensions" problem may happen everywhere we export a sprite or sprite frames.

I think that we should request (or suggest) that assets have certain dimensions. If not, they may start having an odd look or behavior because they won't match the collision shapes, or their pivot point (actually their relative position to the scene root).

An alternative to this is to also expose the shapes and offset. But it would be too much, in my opinion.

[wjt]

I'm a bit stuck on the interact animation because it (presumably) needs to be synchronised with demoing the melody on the rocks/objects, but I don't see a good way to do this, short of hand-tuning the animation to match how long the rocks take to play.

Maybe I can do that: just hardcode that the rocks are played 1 second apart.

[manuq]

I'm a bit stuck on the interact animation because it (presumably) needs to be synchronised with demoing the melody on the rocks/objects, but I don't see a good way to do this, short of hand-tuning the animation to match how long the rocks take to play.

Maybe I can do that: just hardcode that the rocks are played 1 second apart.

Yes, I think it's better if the notes play at a constant beat than if depend on the animation frames or audio stream duration.