My idea is to have a stone tablet with two or three concentric stone rings, each marked with symbols, letters or numbers. When the player clicks on the ring it rotates one space. The player has to click each of the rings until the correct symbols line up. Sounds simple? We've all seen puzzles like this, in Timelapse for instance. The coding would be easy, you just use variables, no problem. To make this work you need to have several hotspots layered one over the other, each with the command "when the user clicks on the hotspot, play a video" - i.e. an animation of the wheel rotating. But here's the catch: the video must be transparent, because each of the rings must rotate independently of the others - as the ring rotates, you want to be able to see the symbols on the rings that are stationary at that point in time.
Great, I thought. I set up my stone rings in Cinema4D, spent a day or two making them look like granite embossed with Dni numbers, and generated a few images as well as AVI animations of the rings spinning. I'll just pull them into AM and start making hotspots.
Now I've tried umpteen different ways of doing this, I've applied a dozen different workarounds, I've used several different file types and a number of different programs and I'm stumped.
The problem boils down to this: to get a transparent animation you really have to use an animated gif, AVI files don't support transparency (the deleted areas of the image just appear white in AM). But AM won't let you use animated gifs for the "when user clicks the hotspot play video" command. After trying a few different solutions, I thought the fix would be to use the plugin for gif sequences. But for some reason it just won't work on my computer. I set it up the way the instructions tell you - I've installed the plugin, checked the box in the project settings dialogue, entered the details in the frame settings dialogue, but when I try to enable the plugin for the hotspot AM tells me that no plugin is enabled for that hotspot.
So... I can't use an AVI, I can't use an animated gif, and I can't use the gif sequence plugin.
Any ideas? Has anyone actually done this sort of a puzzle in AM and, if so, how did they do the animations? Am I wasting my time? Is this puzzle technically possible in AM? Should I be looking to use another program and, if so, which one?
Any advice appreciated.

