test please delete

[Diver]

I've read a fair percentage of them

Damn! I've written a fair percentage of them

>in one persona or another <

[RichardCranium]

I have caught up and apart from Diver's ghost jumping out to scare people, there's nobody here.

So I'll go and be rude in General.

And, to prove I really have done my TPD research: Yes. Specifically in General.

[Diver]

BrilloPad 13,184
zeitghost 12,208
DS23 10,000
Diver 9,890
cailin maith 8,560

WoW! that's a lot of tpd'ing

[Diver]

Goodnight all

[NickFitz]

I was a very happy bunny when I twigged that instead of calculating the sine and cosine of angles, I could have a simple lookup array [0..90] and use that with integer degree angles.

It's good enough for plotting curves on a monitor. Or was, for whatever it was I was writing at the time in 1984. (Which ran on a terminal on a DMS HiNet network.)

Indeed - that's an epic win

It also means that you can use polar geometry to create apparently complex movements of your entities with nothing but lookups - the arcade game Moon Cresta had some excellent enemy motion patterns achieved using the simplest code and a little precalculation

Although using pseudo-degrees in the range 0 - 256 for full circle and then ignoring the least two significant bits was usually good enough for games - 64 directions was more than enough for a 256*192 display (or even 320*256), although it was worth using an error-accumulating internal value to keep things smooth.

It's all just fixed-point arithmetic, really - which is of course essential for many other purposes, including financial calculations. What we need is a currency based on 256 cents to the byte

[RichardCranium]

It's all just fixed-point arithmetic, really - which is of course essential for many other purposes, including financial calculations. What we need is a currency based on 256 cents to the byte

What would we call the units? We can't call them 'cents' because they're not hundredths.

[RichardCranium]

Good morning everybody.

Wavey wave.

[EqualOpportunities]

Good morning everybody.

Wavey wave.

Mornin' Dick

[RichardCranium]

Mornin' Dick

What ho, EO.

When I got up it was cloudy. Now it is bright blue sky.

[RichardCranium]

Now it is all cloudy again.