Trouble porting liquid simulation to Pascal - AARRGGHH!

[paul_nicholls]

So it is almost-C code, intended for an interpreter? I would start by making it run as C code, and convert from there, but OTOH you have already made the conversion. I'll have a look at it.

Thanks mate, much appreciated

cheers,
Paul

[Ingemar]

Making a pure C version wasn't worthwhile. Evil twisted code full of vague implications, lots of undefined stuff. Maybe it isn't very strange that your port didn't work, I have some trouble understanding what the original code does.

[paul_nicholls]

LOL! ok, perhaps it doesn't work and is different that what is actually being used then

EDIT: hmm...I might try downloading the Java-Based Processing Programming Language mentioned, and try the supplied code to see if it is flawed or not

ZOIKS! It is ~85MBs in size...oh well, downloading...

cheers,
Paul

[paul_nicholls]

Ok, after a few minutes working out how to use Processing, I got the code as downloaded from the site to work just fine, so that is ok - it must be my port that is not working

Here is the direct link to the processing code that I ported if you hadn't already gotten that

http://1.shadowcdn.com/files/water_sim.zip

cheers,
Paul

[code_glitch]

Looking through it - gives me a break from modularization of prometheus so you're welcome for posting this... Plus thats a nice article - maybe making a pascal version of the tutorial would be nice for the PGD archives

[code_glitch]

paul: It wouldn't be a big nono if I wrote an equivalent bit of code to this since my port does not look too pretty in the IDE and gave you that instead? Trying to translate this C/C++ is not hard its just a tad annoying TBH. I wish we had a continue statement in pascal (not sure one does not exist actually ).

I'll get back to you guys with my equivalent code for this most soon... A fluid simulation engine would be quite nice for my games too.

[Dan]

I wish we had a continue statement in pascal (not sure one does not exist actually).

It does in fact exist.

[Ingemar]

EDIT: hmm...I might try downloading the Java-Based Processing Programming Language mentioned, and try the supplied code to see if it is flawed or not

The whole idea of making an interpreted language running with an interpreter written in Java, clinging to every design flaw of C from 1970 (even re-intruducing some flaws that were fixed in the 80's), it stinks so bad from start to end that I don't want to let more of it than the example source near my computer. But fluid simulation is nice, so freshing it up it by porting it to FPC could be useful.

One wish for the port: Portability! How about isolating all platform dependent stuff into one unit?

[code_glitch]

Ingemar: I very much like that idea. Unfortunately I made an attempt to get this working but it is an utter failure in many senses... See below:

I figured this might be easy so I wrote this up real quick: http://dl.dropbox.com/u/4853895/WaterSimF2.zip

Its my WaterSimF2 unit I had a crack at and a TestApp using prometheus for drawing the TMX background and updating the water etc... It behaves a bit like water with one exception: IN REVERSE!!! Oo I have o idea why but it does XD

So if anyone wants a fluid system that works in reverse until all the water is gone or just wants to mess around with it, see the link above

Edit:
Screenie:

http://dl.dropbox.com/u/4853895/WaterSimF2_Screenie.png

[paul_nicholls]

Ingemar: I very much like that idea. Unfortunately I made an attempt to get this working but it is an utter failure in many senses... See below:

I figured this might be easy so I wrote this up real quick: http://dl.dropbox.com/u/4853895/WaterSimF2.zip

Its my WaterSimF2 unit I had a crack at and a TestApp using prometheus for drawing the TMX background and updating the water etc... It behaves a bit like water with one exception: IN REVERSE!!! Oo I have o idea why but it does XD

So if anyone wants a fluid system that works in reverse until all the water is gone or just wants to mess around with it, see the link above

Edit:
Screenie:

http://dl.dropbox.com/u/4853895/WaterSimF2_Screenie.png

Hi code_glitch, I downloaded our port to have a look and found one thing - it doesn't compile using Delphi...

For example, in the Prometheus_Core.pas file:

{$Mode Delphi}

should probably be:

{$ifdef fpc}
{$Mode Delphi}
{$endif}

cheers,
Paul