Okay, Week 1 over! Hussshh! Not how I imagined it would go.
I started the week by “trying” to work on my unfinished QTVR task. I made very minor improvements, but they were not my main goal. Basically, the QTVR decoder in ScummVM uses a two step approach to projecting a cylindrical panorama in ScummVM. First Step: Cylindrical projection correction, Second Step: Perspective projection correction. I tried to implement a warp mode 1 in it by skipping step 2. But apparently that’s not the correct solution. This introduces a wobble to the image when tilting up and down. I tried working on it, but couldn’t do it. @sev suggested I abandon it because I have to focus on my main task of saving Director files.
This week I worked on familiarizing myself with the Director 5. I started reading the Director 2 Interactivity Manual. My main task for this week was to understand how Director Movies can be embedded into other Director Movies as cast members. Currently this functionality is missing from ScummVM Director. We cannot load external Movies into the current movie. It was my task to implement this functionality. This is used extensively in startrek, a game we’re hoping to support in ScummVM, which has a main (Director) movie that loads other (Director) movies which store different things (e.g. the floor plans of different rooms on the USS Enterprise NCC-1701-D spacecraft). But so far I’ve been struggling to carry out the task.
To get acquainted with Director and to understand what the task is, @sev asked me to create a simple movie in Director 5. I had to embed an external movie into that just like startrek does using a lingo script. Although, making the movie was simple enough, I failed to see the point behind the exercise. Instead of embedding an external movie, I instead imported all the cast members of my external movie into my current movie and basically mimicked the external movie in my current movie (to not do so was the entire point). After a helping hand from @sev, I was able to make the movie. I will be using this movie as a unit test to check whether the movie cast member loader (which I will start implementing starting next week) works or not.
@sev wanted me to do another thing which was to create a loader for Score that works for all of these cast members: scores, filmloops (very similar to scores but very little or no external control using scripts) and movies (which have their own score and casts and scripts unlike filmloops). But my progress was slow, I am getting stuck often; which lead @sev to tell me that I should immediately ask for help if I feel stuck. I have very little time to make this happen and I can’t afford to spend much time on just getting the basics done. Other students are well on their way to complete their respective tasks.
So to expedite this process @sev and I had a video call where he explained how the Director works, how its components work, how it is implemented currently in ScummVM, how are they loaded, how all of this is tied to my main task of saving movies in ScummVM, and what is it exactly that I need to do. This helped a lot. I now have a clear picture of what needs to be done. From next week I’ll start by implementing a common loader for Score, filmloop and movies in ScummVM’s Director.
I hope I’ll have better news and a better blog next week!