Simple programming question

[Joe]

Why does the compiler give errors to:

(if(aMan:isStopped() and not aMan:isBlocked())

But not to:

(if((aMan:isStopped()) and not (aMan:isBlocked()))

Is it the same reason as why C compilers expect something like:

if ((bla == 5) || (bloo != 0)) {

?

[Brian Provinciano]

Send operations always require full brackets, not just in ifs. This is because they can take multiple params.

ie.
 (send gEgo:
     setSpeed(123)
     setSomethingElse()
     setThat(345)
 )

so if you're sending just one param, it still works the same:

   (aMan:
       isStopped()
   )

or

   (aMan:isStopped())

[Joe]

I'm going to just ask another question here to save space.  What does 'angle' do?

[Brian Provinciano]

There is no "Angle" kernel or method. "GetAngle" takes two points and returns the angle of them.

[Joe]

No, it's a global variable.

gPicAngle

[Brian Provinciano]

"angle" isn't a global variable either, hehe
   
gPicAngle is used to obtain the distance between two objects using the GetDistance() kernel. With gPicAngle, the GetDistance kernel operates like this:
   
disance = squareroot( (x1-x2)/ cosine(gPicAngle*3.14/180)) * (y1-y2) )