[AI movement] Jumping using movegravity()

[serthy]

I have also wrote a sqrt function...

my one:

		sqrt( x )
{
    y = x;

    for( z = x *0.25 ; abs( z - y ) >= 0.001 ; y = ( z + ( x / z ) ) * 0.5 )
    {
        z = y;
    }

    return y;
}