New project Prince of Persia (open source available)

Very impressive, almost hard to believe it can be done on Roku!

I'm guessing you can't move and jump at the same time? Seems like that's always a difficult hurdle with not being able to receive multiple buttons simultaneously.

Very cool though. Never realized the original was open source.

"Romans_I_XVI" wrote:
I'm guessing you can't move and jump at the same time? Seems like that's always a difficult hurdle with not being able to receive multiple buttons simultaneously.

Very cool though. Never realized the original was open source.

As you can see in the video, we can jump when running, because of the "inercia" the original algorithm had implemented, the only limitation is the "shift" key that allow you to walk or hang, so I had to implement it as a on/off toggle button, that works ok, if you train you can run, jump and hang as you do in a PC keyboard.

BTW if you guys want to try it let me know in a PM I can send you link for the private channel.

The source I will open when I have it with most of the features done, I'm having a lot of fun doing it so far 🙂

"Romans_I_XVI" wrote:
I'm guessing you can't move and jump at the same time? Seems like that's always a difficult hurdle with not being able to receive multiple buttons simultaneously.

This is a port from a 1989 ("before you were born" :mrgreen:) game for Apple ][, whose keyboard was even more limited (as explained here - basically buffer of length 1, with only key-down codes). But even so, developers found a way having key combos

This is truly amazing. I'm old enough to remember it as one of the first "good" games for the PC. Never tried it on an Apple (and never will :mrgreen: ).

-JT

What I'm doing is nothing compared to what this guy did:
popc64.blogspot.com

Before the author release the code, this guy disassembled the Apple II code, and ported it to Commodore 64, the blog describes the process.

Holly FAQ! 😛
This is amazing - to see it working, it is.

After a quick check, seems to me to work reasonably well on Roku LT and RokuTV too, so 3xxx and 5xxx models should be able to run it too, not only 4xxx! I used infrared remotes - worked fine. But one of them does not have "Replay", so i have suggestion to accommodate for that, i.e. don't rely on A/B/Replay buttons being present, use OK/*/Back instead.

The idea of showing 2x2 and 3x3 rooms on screen is interesting... not sure a quite buy into it, since part of the game challenge was keeping (mental or not) map of the dungeon, this makes it easier - suppose i am "originalist". Also the non-4xxx players seem rather "syrupy" in such modes.

Can the 1x1 (original) mode be zoomed 2x? Thus it will thereabout fit the screen, currently image seems small centered.

"EnTerr" wrote:
Holly FAQ! 😛
This is amazing - to see it working, it is.
After a quick check, seems to me to work reasonably well on Roku LT and RokuTV too, so 3xxx and 5xxx models should be able to run it too, not only 4xxx!

Great to know!

I used infrared remotes - worked fine. But one of them does not have "Replay", so i have suggestion to accommodate for that, i.e. don't rely on A/B/Replay buttons being present, use OK/*/Back instead.

I will do it

The idea of showing 2x2 and 3x3 rooms on screen is interesting... not sure a quite buy into it, since part of the game challenge was keeping (mental or not) map of the dungeon, this makes it easier - suppose i am "originalist". Also the non-4xxx players seem rather "syrupy" in such modes.

Can the 1x1 (original) mode be zoomed 2x? Thus it will thereabout fit the screen, currently image seems small centered.

This is on my backlog since the beginning, the issue is that Roku 2D API does not have a simple way to do this, I will have to scale every sprite and save on temp, other game engines has this as generic setting.

I missed this one:

"EnTerr" wrote:
The idea of showing 2x2 and 3x3 rooms on screen is interesting... not sure a quite buy into it, since part of the game challenge was keeping (mental or not) map of the dungeon, this makes it easier - suppose i am "originalist". Also the non-4xxx players seem rather "syrupy" in such modes.

It's true that it will give up a lot about the game on the multi-room modes, but it open up other possibilities, actually the people from the PoP Mod community (princed.org) is already saying that it open up new ideas for new custom levels.

To add support for custom levels and sprites is really easy as the game was developed, all is needed is to create the converters to the JSON format I use.