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using Manic Miner and Jet Set Willy game engines
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Message: 3736
Author: Carl Woffenden
Date: 14/09/2003
Subject: Re: [Manic Miner and Jet Set Willy] Re: Announce: Update to JavaScr
Thanks for you feedback, Andrew. That's by far the most comprehensive
list I've received!
I'm playing it under Internet Explorer 5 on a Tiny M840 laptop PC with
a PIII 600 processor):
I didn't test much is IE 5.0 on Windows as it doesn't quite do certain
things right. The PIII *should* be fine though as I wrote the entire
thing on my ancient G3 PowerBook.
1. There's a bug where the screen suddenly scrolls up
This is an IE 5.0 bug - it doesn't happen with any other browser/OS
combination. It's not on my list of things to fix any time soon.
2. Usually when I restart the game I get a "Stack overflow at line: 0"
pop-up error
I thought I was the only person in the entire world to have seen this -
it's caused in the callback to the image preloader. It's an IE/Windows
only thing and is a high priority fix.
3. Upon restarting the game, the room-titles, scores and remaining
lives sometimes disappear.
Titles and scoring was rather quickly. This will all be re-written to
match the original.
4. The jumping is inaccurate with respect to the Spectrum-version
Oh? I thought I had it right this time - I'll look properly into this.
5. I miss the sound.
I would love to add sound but there's no easy way of doing it cross
platform. I have a choice of adding samples using a hidden Flash movie,
Java applet or other plug-in, or writing a programmable sound generator
plug-in (possibly applet) for beeper effects. None of the ways are
satisfactory as they take it away from the simple
just-works-in-any-browser vision I had.
6. I miss the Game Over screen.
It will be added. I dunno when I'll have the time, though.
7. As a Spectrum-purist, I miss the colour-clash. ;-)
I toyed with the idea for a long time but it just simply wasn't
practical. To be honest, writing a game in JavaScript isn't practical
either!
8. I miss my usual keys (O & P for left & right, Enter to start the
game, and the PAUSE-BUTTON).
P causes Opera to print (and usually crash). Any alpha key causes
Mozilla to search for links/words beginning with that letter, hence the
cursor keys.
9. The speed is erratic (mostly too slow, but then it speeds up... and
slows down again...).
This could be a whole host of things - from the speed of your CPU to
the dodgy IE browser. JavaScript isn't exactly designed for gaming but
I haven't had many grumbles about the game speed.
10. There's sometimes a long delay in starting the game or between
caverns.
This is usually due to the level graphics being dragged across the
internet - I intend to add a progress bar.
11. The portal consumes you a step too soon (a step too late when
jumping up into it from below).
I'll look into this.
12. The playing-area doesn't go black and blue when you complete a
cavern.
Not really possible without loading in extra coloured versions of the
graphics.
13. There's no way to stop the remaining lives animating.
Too be fixes.
14. I seem to be finishing the caverns with less air left than on the
Spectrum.
Mmm. I'm starting the levels off with the right amount of air, I think.
Are you roughly getting the same scores?
15. In "Eugene's Lair", you can't jump over the static nasty and land
inside the wall. This is the major problem with all of the non-
Spectrum MM/JSW games that I have played
I have been checking and adding these. I'll further into it.
16. In "Processing Plant", you miss the item when emerging from under
the wall holding jump
I spotted this recently, since I fiddled with the jump code. It will be
fixed.
17. You can't stop on a conveyor by jumping up and holding the
opposite direction
Not something I'd intended. Again, I'll look into it.
On the other hand, you /can/ jump straight up onto a conveyor and then
jump in the opposite direction!
I couldn't have missed this one out!
18. The falling Kong Beast is red!
I thought it was supposed to be red!? It was in the Jester releases, so
I might have just got all confused.
(Tell Mikey I have good news...)
??
19. Collision-detection for guardians appears to be position-based
rather than pixel-based
I wrote a pixel-based routine but the data were too big for modem uses
(it's not possible to access pixels from JavaScript so a text encoded
bitmask was needed for each sprite). I *might* add this back in.
20. You can fall onto a conveyor and walk the wrong way on it
I thought I'd fixed this. Oh well!
21. In "The Sixteenth Cavern", you can fall through the portal and
collect the item.
I'll probably leave this in.
23. The conveyor-animation in "Amoebatrons' Revenge" is missing.
I classed it as a mistake in the original and removed it. I suppose I
could add it back in.
24. No solar power.
In JavaScript?! I couldn't even muster up the processing power to do
this on the Mobile versions I wrote. It's possible that this will be
added later.
25. No Room 19 picture.
To be fixed.
26. You cannot use the wall to stop on the conveyor in "The Final
Barrier".
Don't know what you mean? Can you do a screen grab/movie capture?
27. No swordfish when you complete "The Final Barrier" (unless this is
because I got there by teleporting ;-) ).
To be added.
28. No extra life every 10000 points.
To be added.
Thanks again for all your help!
Regards,
Carl.
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