landscape

Originally uploaded by josath.

This is a procedural landscape I generated using Perlin Noise, and the beauty is that it’s all done in Flash. I’m writing this post from within flickr, just to see how it’s done.
You can see the actual swf at my flash page, but beware, most of the stuff there is beta, and I don’t have any fancy flash embedding set up, so it may not even work for you.

Here I am posting the schematic of the current design, and my proposed schematic for design revision 2. The main changes are:

• Directly drive the ROW inputs with transistors, instead of using shift register. I have enough I/O pins that there is no need for a shift register here, and the transistors will allow a decent amount of current through.
• Limit the current coming out of the COLUMNS with resistors. This is needed now that there will be more current flowing through. Before I got away without them, probably because each row was being driven by a single output pin of the shift registers
• Use shift registers on columns as before, but this time with a latch, so you wont see the data being shifted in. Thus the ‘off’ LEDs will really be off, instead of the faint flicker/glow

Schematic Rev. 1 (What I currently have built)

Schematic Rev. 2 (What I am planning to change next time)

I ported the code to C. Now it is easier for me to work with.

This makes it easy to scale things, so now I have 10 boucing lights instead of one:

bounce3.mpg - 3MB

I’m no ASM master, so I could probably be doing it the hard way, but this code in ASM:

(more…)

I finally got the code worked out for bouncing a little ball around. Here’s a short movie:

bounce.avi - 200KB
MPG1 format - 1.1MB
I think next, I am going to rewrite all this code in C. The ASM is getting too complex for me to manage efficiently, I spend too much time tracking down ASM bugs versus actually writing code.