math_shared.csc

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#insert scripts\shared\shared.gsh;
 
#namespace math;
 
function ‪clamp(val, val_min, val_max)
{
    if (val < val_min)
    {
        val = val_min;
    }
    else if (val > val_max)
    {
        val = val_max;
    }
 
    return val;
}
 
function ‪linear_map(num, min_a, max_a, min_b, max_b)
{
    return ‪clamp(( (num - min_a) / (max_a - min_a) * (max_b - min_b) + min_b ), min_b, max_b);
}
 
function ‪lag(desired, curr, k, dt)
{
    r = 0.0;
 
    if (((k * dt) >= 1.0) || (k <= 0.0))
    {
        r = desired;
    }
    else
    {
        err = desired - curr;
        r = curr + k * err * dt;
    }
 
    return r;
}
 
function ‪array_average( ‪array )
{
    assert( IsArray( ‪array ) );
    assert( ‪array.size > 0 );
 
    total = 0;
 
    for ( i = 0; i < ‪array.size; i++ )
    {
        total += ‪array[i];
    }
 
    return ( total / ‪array.size );
}
 
function ‪array_std_deviation( ‪array, mean )
{
    assert( IsArray( ‪array ) );
    assert( ‪array.size > 0 );
 
    tmp = [];
    for ( i = 0; i < ‪array.size; i++ )
    {
        tmp[i] = ( ‪array[i] - mean ) * ( ‪array[i] - mean );
    }
 
    total = 0;
    for ( i = 0; i < tmp.size; i++ )
    {
        total = total + tmp[i];
    }
 
    return Sqrt( total / ‪array.size );
}
 
// ----------------------------------------------------------------------------------------------------
// -- Vectors -----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------------------
 
function ‪vector_compare(vec1, vec2)
{
    return (abs(vec1[0] - vec2[0]) < .001) && (abs(vec1[1] - vec2[1]) < .001) && (abs(vec1[2] - vec2[2]) < .001);
}
 
function ‪random_vector(max_length)
{
    return (RandomFloatRange(-1 * max_length, max_length), RandomFloatRange(-1 * max_length, max_length), RandomFloatRange(-1 * max_length, max_length));
}
 
function ‪angle_dif(oldangle, newangle)
{
    outvalue=(oldangle-newangle)%360;
     if (outvalue<0)
          outvalue+=360;
     if (outvalue>180)
          outvalue=(outvalue-360)*-1;
     return outvalue;
}
 
function ‪sign( x )
{
    if ( x >= 0 )
        return 1;
    return -1;
}
 
function ‪cointoss()
{
    return RandomInt( 100 ) >= 50 ;
}