java - パーリン ノイズを使用して 2D タイル マップを生成する

Question

私はインターネット全体を調べ、パーリン ノイズを調査しましたが、まだ混乱しています。

私は Java とlibgdxを使用しています。動作してノイズを生成する Perlin クラスがありますが、その値が正しいかどうかはわかりません。実際にパーリンノイズを出力していることを確認するにはどうすればよいですか?

私の実装が正しい場合、ランダムな地形を作成するためにそこからどこへ行くべきかわかりません。パーリン ノイズをタイルにマッピングするにはどうすればよいですか? 現在、4 つの基本タイルがあります。水、砂、岩、草。

package com.bracco.thrive.world;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.g2d.Sprite;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.graphics.g2d.TextureRegion;
import com.badlogic.gdx.graphics.GL10;
import com.badlogic.gdx.graphics.Texture;
public class WorldGeneration {

Perlin noise = new Perlin();
private SpriteBatch spriteBatch;
//private boolean debug = false;
private TextureRegion[] regions = new TextureRegion[4];
private Texture texture;

 float x = 110;
 float y = 120;
 float originX = 0;
 float originY = 16;
 float width = 16;
 float height = 16;
 float scaleX = 1;
 float scaleY = 1;
 float rotation = 1;


@SuppressWarnings("static-access")
public void createWorld(){
    spriteBatch = new SpriteBatch();
     texture = new Texture(Gdx.files.internal("assets/data/textures/basictextures.png"));

     regions[0] = new TextureRegion(texture,0,0,16,16); //grass 
     regions[1] = new TextureRegion(texture,16,0,16,16); //water
     regions[2] = new TextureRegion(texture,0,17,16,16); //sand
     regions[3] = new TextureRegion(texture,17,17,16,16); //rock
    float[][] seed =  noise.GenerateWhiteNoise(50, 50);
    for (int i = 0;i < seed.length; i++){
        for ( int j = 0; j < seed[i].length; j++){
            System.out.println(seed[i][j] + " ");
        }
    }
     float[][] seedE = noise.GenerateSmoothNoise( seed, 6);
     for (int i = 0;i < seedE.length; i++){
            for ( int j = 0; j < seedE[i].length; j++){
                System.out.println(seedE[i][j] + " ");
            }

     }
     float[][] perlinNoise = noise.GeneratePerlinNoise(seedE, 8);
     for (int i = 0;i < perlinNoise.length; i++){
            for ( int j = 0; j < perlinNoise[i].length; j++){
                System.out.println(perlinNoise[i][j] + " ");
            }
        }
}

public void render(){
    Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);
    spriteBatch.begin();
    //spriteBatch.draw(texture, 0,  0,  16, 16);
    for (int i = 0; i < regions.length; i++){
        spriteBatch.draw(regions[i],75 * (i + 1),100);
    }
    spriteBatch.end();
}



}

package com.bracco.thrive.world;

    import java.util.Random;

    public class Perlin {

    public static float[][] GenerateWhiteNoise(int width,int height){

        Random random = new Random((long) (Math.round(Math.random() * 100 * Math.random() * 10))); //Seed to 0 for testing
        float[][] noise = new float[width][height];

        for (int i = 0; i < width; i++)
        {
            for (int j = 0; j < height; j++){
                noise[i][j] = (float)(Math.random() % 1);
            }
        }

        return noise;
    }

    float[][] GenerateSmoothNoise(float[][] baseNoise, int octave)
    {
       int width = baseNoise.length;
       int height = baseNoise.length;

       float[][] smoothNoise = new float[width][height];

       int samplePeriod = 1 << octave; // calculates 2 ^ k
       float sampleFrequency = 1.0f / samplePeriod;

       for (int i = 0; i < width; i++)
       {
          //calculate the horizontal sampling indices
          int sample_i0 = (i / samplePeriod) * samplePeriod;
          int sample_i1 = (sample_i0 + samplePeriod) % width; //wrap around
          float horizontal_blend = (i - sample_i0) * sampleFrequency;

          for (int j = 0; j < height; j++)
          {
             //calculate the vertical sampling indices
             int sample_j0 = (j / samplePeriod) * samplePeriod;
             int sample_j1 = (sample_j0 + samplePeriod) % height; //wrap around
             float vertical_blend = (j - sample_j0) * sampleFrequency;

             //blend the top two corners
             float top = Interpolate(baseNoise[sample_i0][sample_j0],
                baseNoise[sample_i1][sample_j0], horizontal_blend);

             //blend the bottom two corners
             float bottom = Interpolate(baseNoise[sample_i0][sample_j1],
                baseNoise[sample_i1][sample_j1], horizontal_blend);

             //final blend
             smoothNoise[i][j] = Interpolate(top, bottom, vertical_blend);
          }
       }

       return smoothNoise;
    }

    float Interpolate(float x0, float x1, float alpha)
    {
       return x0 * (1 - alpha) + alpha * x1;
    }

    float[][] GeneratePerlinNoise(float[][] baseNoise, int octaveCount)
    {
       int width = baseNoise.length;
       int height = baseNoise[0].length;

       float[][][] smoothNoise = new float[octaveCount][][]; //an array of 2D arrays containing

       float persistance = 0.5f;

       //generate smooth noise
       for (int i = 0; i < octaveCount; i++)
       {
           smoothNoise[i] = GenerateSmoothNoise(baseNoise, i);
       }

        float[][] perlinNoise = new float[width][height];
        float amplitude = 1.0f;
        float totalAmplitude = 0.0f;

        //blend noise together
        for (int octave = octaveCount - 1; octave >= 0; octave--)
        {
           amplitude *= persistance;
           totalAmplitude += amplitude;

           for (int i = 0; i < width; i++)
           {
              for (int j = 0; j < height; j++)
              {
                 perlinNoise[i][j] += smoothNoise[octave][i][j] * amplitude;
              }
           }
        }

       //normalisation
       for (int i = 0; i < width; i++)
       {
          for (int j = 0; j < height; j++)
          {
             perlinNoise[i][j] /= totalAmplitude;
          }
       }

       return perlinNoise;
    }
}