[Tirant]

I made this the other day because I could not find one. Maybe someone else will need it. It will copy data from one array to another for a max length of cells and you're able to set starting positions. If someone sees optimization errors or has any other, better, ideas feel free to edit/comment.

/**
 * Copies information from one array into another.
 * 
 * @param into        The array to place the data into
 * @param from        The array to get the data from
 * @param len         The number of cells to copy
 * @param ignoretags  True to enable tag comparison, false to
 *                    ignore them.
 * @param intotag     The tagof constant for the into array
 * @param intosize    The max size of data to place into
 *                    the array
 * @param intopos     The starting position to place data
 *                    into
 * @param fromtag     The tagof constant for the from array
 * @param fromsize    The max size of data to place from
 *                    the array
 * @param frompos     The starting position to begin copying
 *                    data from
 */
stock arraycopy( any:into[], any:from[], len = sizeof into, bool:ignoretags = false, intotag = tagof into, intosize = sizeof into, intopos = 0, fromtag = tagof from, fromsize = sizeof from, frompos = 0) {
    if (!ignoretags && intotag != fromtag) {
        //So we know no elements were copied (we did not remove an element ie. returning -1)
        return 0;
    }
    
    new i
    while (i < len) {
        if (intopos >= intosize || frompos >= fromsize) {
            break;
        }
        
        into[intopos++] = from[frompos++];
        i++;
    }
    
    return i;
}