FactoryCraft-Server/FactoryCraft/RandNoise.cpp

#include <Random.h>
#include <stdlib.h>

#include "RandNoise.h"
#include "Constants.h"
#include "FastNoiseLite.h"
#include "FastNoiseWrapper.h"


RandNoise::RandNoise( int seed )
    : Noise(),
    seed( seed )
{
    FastNoiseLite* n = new FastNoiseLite( seed );
    n->SetNoiseType( FastNoiseLite::NoiseType::NoiseType_OpenSimplex2S );
    n->SetRotationType3D( FastNoiseLite::RotationType3D::RotationType3D_None );
    n->SetFrequency( 0.333f );
    n->SetFractalOctaves( 1 );
    n->SetFractalType( FastNoiseLite::FractalType::FractalType_None );
    n->SetDomainWarpAmp( 30.f );
    noise = new FastNoiseWrapper( n, seed );
}

RandNoise::~RandNoise()
{
    delete noise;
}

int RandNoise::getSeed() const
{
    return seed;
}

double RandNoise::getNoise( double x, double y, double z )
{
    double n = noise->getNoise( x * 4 + y + z * 7, 7 * x + 4 * y + z, x + 7 * y + 4 * z );
    assert( n >= 0 && n <= 1 );
    return n;
}