The Sinclair QL Forum

Hi Dilwyn, Looks like I sent the wrong version 3.... after testing on SGC and QDOS, whilst tweaking to adapt to both them and QPC2. Version4 is rewritten and should run much faster still, but be more stable on all three systems now. I will have to slug it somehow, as with just a few sprites speed is...

Hi again Dilwyn, The code has now been considerably optimised for speed : In fact I had to add a pause on line 790 to slow it down... for SGC, change the Pause to 0, and modify line 170 so Q is in the range of (1 to 8)*2 sprites only. On SGC under QDOS it runs much better when compiled. On SGC under...

Hi Dilwyn, Firstly, regarding slow operation on SGC, collision detection is the main hurdle.... and could no doubt be improved upon. On my QPC, I don't get the 'only 2 objects at startup' problem. Perhaps including RANDOMISE in 'init' might help on your setup ? As for using planes, version3 now simp...

Hi again, Just tested the Brownian 'sprites' program on SGC under Qdos & SMSQ/E, with a monochrome monitor. Some changes were necessary, so here is a version which works, (allbeit slowly on SGC). On SGC, use less sprites, on line 170 let Q=RND(1 to 16)*2, and line 840 (n+32) instead of (n+21). C...

Hi Folks, Just been thinking about how many 'sprites' can be manipulated simultaneously under QPC2. So I cobbled together a quick program which can handle at least 64 at once. Not yet tried on my JS QL or SGC, but I will have a go later today... The routine began as a simulator of Brownian motion, b...

Hi Folks,
As no other bugs have been reported, here is the final version, which includes Derek's tweak to allow operation on Minerva setups...

Regards, Steve.

Hi, Just managed to reduce the code from 3ko down to 2ko, by compacting the bubble-loop from 28 lines down to a mere 4 lines.... The original 7 bubble stream may now be up to 28, so the animation is even more realistic. (Hit ESCape to halt). It is surprising what can be done using the much underrate...

Hi Again,
Here is a much more fluid version, after simplifying and removing quite a few lines of code....

This will probably be the final version. Should work on most platforms. (Tested under QPC2).

Regards, Steve.

Hi, Here's a couple of screen-shots : Steve.

Hi Folks,

Just decided to do a little Doodle before the end of my holiday break. A simulation of blowing Soap Bubbles.....

Unzip, LRUN and watch, or ESCape !

Regards, Steve.