core/src/ru/deadsoftware/cavecraft/game/WorldGen.java

   1 package ru.deadsoftware.cavecraft.game;
   2
   3 import com.badlogic.gdx.Gdx;
   4 import com.badlogic.gdx.math.RandomXS128;
   5 import com.badlogic.gdx.utils.TimeUtils;
   6
   7 public class WorldGen {
   8
   9     private static RandomXS128 rand;
  10     private static long seed;
  11
  12     private static int[][] foreMap, backMap;
  13     private static int[] hMap;
  14
  15     public static long getSeed() {
  16         return seed;
  17     }
  18
  19     static int[] genLandscape(int width, int mid, int min, int max) {
  20         int[] res = new int[width];
  21         int t;
  22         res[0] = mid;
  23         for (int i=1; i<width; i++) {
  24             t = rand.nextInt(3)-1;
  25             res[i] = res[i-1] + t;
  26             if (res[i]<min) res[i] = min;
  27             if (res[i]>max) res[i] = max;
  28         }
  29         return res;
  30     }
  31
  32     private static void genOak(int x, int y) {
  33         backMap[x][y] = 15;
  34         backMap[x][y-1] = 15;
  35         backMap[x][y-2] = 15;
  36         backMap[x][y-3] = 15;
  37         backMap[x][y-4] = 16;
  38         backMap[x][y-5] = 16;
  39         backMap[x-1][y-3] = 16;
  40         backMap[x-1][y-4] = 16;
  41         backMap[x+1][y-3] = 16;
  42         backMap[x+1][y-4] = 16;
  43         foreMap[x][y-3] = 16;
  44         foreMap[x][y-4] = 16;
  45         foreMap[x][y-5] = 16;
  46         foreMap[x-1][y-3] = 16;
  47         foreMap[x-1][y-4] = 16;
  48         foreMap[x+1][y-3] = 16;
  49         foreMap[x+1][y-4] = 16;
  50     }
  51
  52     static void genWorld(int width, int height) {
  53         genWorld(width, height, TimeUtils.millis());
  54     }
  55
  56     static void genWorld(int width, int height, long s) {
  57         int dirtH;
  58         seed = s;
  59         rand = new RandomXS128(seed);
  60         foreMap = new int[width][height];
  61         backMap = new int[width][height];
  62         hMap = genLandscape(width, height/2, height/4, height/4*3);
  63         for (int x=0; x<width; x++) {
  64             dirtH = 4+rand.nextInt(2);
  65             for (int y = height- hMap[x]; y<height; y++) {
  66                 if (y==height- hMap[x]) {
  67                     foreMap[x][y] = 2;
  68                     backMap[x][y] = 2;
  69                 } else if (y<height-hMap[x]+dirtH) {
  70                     foreMap[x][y] = 3;
  71                     backMap[x][y] = 3;
  72                 } else if (y<height-1){
  73                     foreMap[x][y] = 1;
  74                     backMap[x][y] = 1;
  75                 } else {
  76                     foreMap[x][y] = 7;
  77                     backMap[x][y] = 7;
  78                 }
  79             }
  80             for (int y = height/4*3; y<height- hMap[x]; y++) {
  81                 if (foreMap[x][y]==0){
  82                     foreMap[x][y] = 8;
  83                     backMap[x][y] = 8;
  84                 }
  85             }
  86             if (x>2 && x<width-2 && rand.nextInt(100)<5) genOak(x,height-hMap[x]-1);
  87         }
  88     }
  89
  90     static int[][] getForeMap() {
  91         return foreMap;
  92     }
  93
  94     static int[][] getBackMap() {
  95         return backMap;
  96     }
  97
  98     static void clear() {
  99         foreMap = null;
 100         backMap = null;
 101     }
 102 }