I am currently writing code to construct a game for android devices, however part of my code requires rotating numbers to create random choices, missions, stars etc. However I am fairly new to coding and although I understand quite a bit of it, this has me completely stumped.

I am writing this in Javascript/Unityscript

Currently my code is as follows, at least where I am stuck that is...

var coordx_2;
var coordy_2;
var sysNum;
var dest;
var strcpy;
var strcat;


    coordx_2 += sysNum;
    coordy_2 += coordx_2;
    coordx_2 = rotate_some(coordx_2, 3);
    coordx_2 += coordy_2;
    coordy_2 = rotate_some(coordy_2, 5);
    coordy_2 += coordx_2;
    coordy_2 = rotate_some(coordy_2, 4);
    coordx_2 = rotate_some(coordx_2, sysNum);
    coordx_2 += coordy_2;

    strcpy (dest, namePart[(coordx_2>>2) & 31]);
    coordx = (coordx_2) 5; //This is the part that needs rotating, also says that ';' is expected
    strcat (dest, namePart[(coordx_2>>2) & 31]);
    coordx = (coordx_2) 5; //This is the part that needs rotating, also says that ';' is expected
    strcat (dest, namePart[(coordx_2>>2) &31]);
    dest[0] ^= 0x20;

I should also mention that I do not want to use the Rand keyword as that will create too many random elements, this is meant to be a controlled reaction, Think of it as rotating an object by so many degrees, but each time you do it, it changes shape slightly.