archive.worldofdragon.org

Another step closer to "finished", I've uploaded a video with sound. Showcases an NTSC mode and CoCo support (gained at the cost of much elevated frustration) too! Great work! It looks like it's going to be really good. But bear in mind that a CoCo 3 connected to an RGB monitor will not display art...

Try typing the AUDIO ON command before loading. If you can hear the pitch of the tape lowering as it goes on, then maybe the tape is slowing down the further you get into it. One possible reason for that is that the tape is a bit stiff. Some people try rewinding and fast forwarding a few times and i...

I've learnt a lot about what the beeb version must be doing under the hood just by watching it closely. My sprite data structures are relatively huge! Players take 32 bytes each at the moment - monsters somewhat less... But that's because I'm caching lots of things like their viewport offset in byt...

Oh, very interesting. I'm a big fan of this type of game, as if that wasn't obvious. ;) These types of games are a struggle with only 32K of memory, so Glove had everything (except projectiles) as "blocks". The blocks each had 4 bytes of data associated with them, including a "half-bit" for X and Y,...

I'm really thinking about getting one of them, but I'm having to check my money and my (immense) time constraints. I have a ZX-Uno, which is excellent value and very capable (more cores and more Mhz than the Next!), but it's a bit like the Pi - a board with lots of wires hanging out of it. But then ...

This is a real problem when trying to use horizontal blank IRQs. PAL CoCos also output the correct number of lines, leaving the Dragon 64 as the odd one out. The only real solution, I can think of, is to modify the sound routine so that it detects a Dragon 64 and uses 100% CPU time for those 50 line...

Hey, nice game demo!

Good scrolling and very nice music. Quite a few sprites on-screen too.

I hope you turn it into a full game.

Would be pretty easy to implement a "proper" banked cart if you can point to a spec... Here's the CoCoFlash spec: CoCoFlash You don't need to implement all of that though, just the offset register at $FF40-$FF5F (software usually uses $FF40). From the emulation perspective, the banks are 16K and ba...

If your game runs on a 32K machine, it might be possible to get it to run on a 16K cartridge. It depends on a few factors such as compressibility, code vs data balance and whether you have data that could be calculated instead of stored on the cartridge. The simplest method is to simply compress the...

I don't have a Dragon (at the moment) but I do have a CoCo 2. So I should be able to find out whether it will work or not, as I've just ordered one of these flash carts: CoCoFlash Which also seems to support this as well: Orchestra 90 While I wait, I've made the new storyline for the game, bu not mu...