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Forums > C64 Coding > Pinball Dreams discussion forum
2003-02-13 19:16
WVL

Registered: Mar 2002
Posts: 886
Pinball Dreams discussion forum

Hey guys/girls,

instead of updating my homepage all the time, I though I could open a new thread here instead. This will also allow other ppl to comment on the development.

okay, so whassup at the moment?

Well, Last month I completely restarted from scratch on the code. Why? Well, first I wanted to concentrate more on getting the game to run in less memory, also I wanted to focus more on accurate simulation of the ball and some small other things...

What I have done till now :

1 - spawned the ball ;-)
2 - added gravity to the surroundings, the gravity data is now RLE encoded, so it doesn't take up much memory anymore. Used to eat 20 blocks of memory, now I think a map would use 3-4 blocks..
3 - I changed the gravity routine to use polar-based vectors instead of cartesean, much more accurate!
4 - added a debug mode to the movement routines, you're able to pick up the ball with the firebutton and move it around. Let go of the button and you drop it on the table again.
5 - Worked on an accurate (within 1 'bradian' degree) direction calculation routine. This routine will be used for both friction calculations and calculating new directions after collisions. So it needs to be
6 - added a (simple) friction routine.
7 - I put a small preview on the web ;-)

get it at http://www.interstyles.nl/pinball.rar

okay, what am I up to now?

1 - increase the speed accuracy to 24 bit, I need this because the friction only affects speed in the last 3 bits or so, so it's not accurate at all..
2 - add spin to the ball, so it is allowed to roll.. (also gives effect to the ball like top-spin and such)
3 - dunno yet, I'll see what is the next logical step after that.. probably the new method of collision detection, dunno..

I'm thinking of putting the sourcecode online as ascii file, so everyone can check it out...

Suggestions? Questions? other stuff?

greets, Werner
 
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2004-03-18 20:18
RaveGuru

Registered: Apr 2002
Posts: 41
This looks very promising! Keep up the good work :)

RaveGuru / Instinct
2004-07-15 06:06
AmiDog

Registered: Mar 2003
Posts: 97
Any progress made lately?
2004-07-15 12:27
WVL

Registered: Mar 2002
Posts: 886
http://www.interstyles.nl/pd.d64

check out for yourselves
2004-07-15 12:49
Matt

Registered: Apr 2002
Posts: 589
wow, looking great so far!

keep us informed
2004-07-15 13:33
Oswald

Registered: Apr 2002
Posts: 5017
yeah very nice indeed!! :)

one thing, imho you should adjust the physics a bit, the movement feels like the ball were a ping-pong ball, make something to have it that heavy metal ball feel. It just bumps and hops sometimes too much here and there.
2004-07-15 13:49
WVL

Registered: Mar 2002
Posts: 886
@ oswald : I guess i have to remove some more energy after each collision ;) also some more tweaking is needed to make the feel better, but at least i can see now what's happening :)

2004-07-15 14:45
Hein

Registered: Apr 2004
Posts: 933
Quote: http://www.interstyles.nl/pd.d64

check out for yourselves


Great.
Hope it will find a finishing result, no matter when.

Keep up the great work.
2004-07-15 15:55
CreaMD

Registered: Dec 2001
Posts: 3034
Oh yeah!!! (... and agrees with Oswald ;-)
2004-07-15 19:40
Richard

Registered: Dec 2001
Posts: 619
That update of your project is looking great. Keep up the good work. We all would love to see this finished :)
2004-07-16 17:28
WVL

Registered: Mar 2002
Posts: 886
I did some quick hacking today and together with a bug-fixed collision tool we got this out of our hands :

the ball moves a bit smoother now and YOU CAN SHOOT THE BALL AWAY!! Also the collision-engine is a bit more memory-efficient (we saved 1.5 blocks) and the bitmap-scroller is sped-up quite a bit.

key to move the shooter-spring is crsr-down, but will become pound-sign in the next version (easier for me on my laptop ;) for testing). btw, you have to place the ball in the shooter duct with the joystick in port 2 yourselve to try..

if the engine freezes (ball getting stuck, still happens sometimes... tweaks needed ;) just reset and restart with sys8192.

same URL as before.
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