taultunleashed

Anyone been able to decipher the heading values in AoC?

I think I have the offset correct, but it doesn't make sense to me.

It seems they are float values, 0 to 1, but can also be negative. No, it isn't negative for a decrease in x/y values or anything like that, or even angles it seems. It seems they randomly go to negative numbers.

Any help on the heading values would be appreciated.

haha the heading values are very easy mate =)
Go venture into your math book and look up trig functions =p

jinzoh wrote:haha the heading values are very easy mate =)
Go venture into your math book and look up trig functions =p

Hehe, I spent 3 years in college as a trig tutor, so I have a pretty good grasp of them.

The problem I was having is that I was trying to put a meaning behind the heading values. There is no rational reason I can come up with as to why the value of a heading at 90 degrees would be .7, while at 180 it would be 1.

You would think they would be a ratio, but they wern't.

In any case, I have it working now, so no worries.

Still doesn't make sense to me, but eh, guess that's just how it goes.

Actually there is a very rational reason! Those values are triangle side ratios of the little player arrow on the map (hmmm how do we smat people go from side ratios to angles?). I don't know if you noticed this, but you can actually modify your size and make the character a balloon or a broomstick with some minor tweaking. The game literally treats the player as a bisected triangle.

-PS, you need 4 addresses to do this properly and there actually is a pattern to the madness

Ah, then there is my problem.

I was only using one offset, x98, for heading. It was the value giving the funky decimal number that didn't make much sense speaking from a trig perspective by itself.

What I ended up doing is getting that value, finding the "quadrent" of my next heading, converting it to a "heading" value, then adjusting my current heading accordingly.

Works ok, just struggles near 0 degrees and 180 degrees (due to only using the decimal number, so I couldn't tell which way to turn). I'll have to take a looksy to see if I can't find these other offsets. I read from code2007 on his forums what offsets to check, so I'll see if it makes it any easier.

hint: there's another way to do but the simple way is

use
Abs(x2 - x1)
Abs(y2 - y1)
Sqr(A ^ 2 + B ^ 2)

distance from point a to b

cal = Atn(-X / Sqr(-X * X + 1)) + 2 * Atn(1)

deg = cal((A ^ 2 - B ^ 2 - C ^ 2) / (B * C * -2))
degree = deg * (180 / 3.14)

Pretty much how I did it

Except, I used ArcSin.

Here's a little secret I learned. The ASin method in .Net returns radians, not degrees by default.

You have no idea how long it took me to figure that out. I kept wondering how the hell I was getting values like 1.4.