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

   1 package ru.deadsoftware.cavecraft.game;
   2
   3 import com.badlogic.gdx.math.RandomXS128;
   4 import com.badlogic.gdx.utils.TimeUtils;
   5
   6 public class WorldGen {
   7
   8     private static RandomXS128 rand;
   9     private static long seed;
  10
  11     private static int[][] foreMap, backMap;
  12     private static int[] hMap;
  13
  14     public static long getSeed() {
  15         return seed;
  16     }
  17
  18     static int[] genLandscape(int width, int mid, int min, int max) {
  19         int[] res = new int[width];
  20         int t;
  21         res[0] = mid;
  22         for (int i=1; i<width; i++) {
  23             t = rand.nextInt(3)-1;
  24             if (i>width-(max-min)) {
  25                 if (res[i-1]+t<res[0]) t=Math.abs(t);
  26                     else if (res[i-1]+t>res[0]) t=-Math.abs(t);
  27             }
  28             res[i] = res[i-1] + t;
  29             if (res[i]<min) res[i] = min;
  30             if (res[i]>max) res[i] = max;
  31         }
  32         return res;
  33     }
  34
  35     private static void genOak(int x, int y) {
  36         backMap[x][y] = 15;
  37         backMap[x][y-1] = 15;
  38         backMap[x][y-2] = 15;
  39         backMap[x][y-3] = 15;
  40         backMap[x][y-4] = 16;
  41         backMap[x][y-5] = 16;
  42         backMap[x-1][y-3] = 16;
  43         backMap[x-1][y-4] = 16;
  44         backMap[x+1][y-3] = 16;
  45         backMap[x+1][y-4] = 16;
  46         foreMap[x][y-3] = 16;
  47         foreMap[x][y-4] = 16;
  48         foreMap[x][y-5] = 16;
  49         foreMap[x-1][y-3] = 16;
  50         foreMap[x-1][y-4] = 16;
  51         foreMap[x+1][y-3] = 16;
  52         foreMap[x+1][y-4] = 16;
  53     }
  54
  55     static void genWorld(int width, int height) {
  56         genWorld(width, height, TimeUtils.millis());
  57     }
  58
  59     static void genWorld(int width, int height, long worldseed) {
  60         int dirtH;
  61         seed = worldseed;
  62         rand = new RandomXS128(seed);
  63         foreMap = new int[width][height];
  64         backMap = new int[width][height];
  65         hMap = genLandscape(width, height/8*3, height/8, height/2);
  66         for (int x=0; x<width; x++) {
  67             dirtH = 4+rand.nextInt(2);
  68             for (int y = height- hMap[x]; y<height; y++) {
  69                 if (y==height- hMap[x]) {
  70                     foreMap[x][y] = 2;
  71                     backMap[x][y] = 2;
  72                 } else if (y<height-hMap[x]+dirtH) {
  73                     foreMap[x][y] = 3;
  74                     backMap[x][y] = 3;
  75                 } else if (y<height-1){
  76                     foreMap[x][y] = 1;
  77                     backMap[x][y] = 1;
  78                 } else {
  79                     foreMap[x][y] = 7;
  80                     backMap[x][y] = 7;
  81                 }
  82             }
  83             for (int y = height-64; y<height-1; y++) {
  84                 if (foreMap[x][y]==0){
  85                     foreMap[x][y] = 8;
  86                     backMap[x][y] = 8;
  87                     if (y==height-hMap[x]-1) {
  88                         foreMap[x][y+1] = 3;
  89                     }
  90                 }
  91             }
  92             if (x>2 && x<width-2 && rand.nextInt(100)<5){
  93                 if (foreMap[x][height-hMap[x]-1]==0) {
  94                     genOak(x,height-hMap[x]-1);
  95                 }
  96             }
  97         }
  98     }
  99
 100     static int[][] getForeMap() {
 101         return foreMap;
 102     }
 103
 104     static int[][] getBackMap() {
 105         return backMap;
 106     }
 107
 108     static void clear() {
 109         foreMap = null;
 110         backMap = null;
 111     }
 112 }