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(7)-3;
  24             if (t>-3 && t<3) t=0; else t/=Math.abs(t);
  25             if (i>width-(max-min)) {
  26                 if (res[i-1]+t<res[0]) t=Math.abs(t);
  27                     else if (res[i-1]+t>res[0]) t=-Math.abs(t);
  28             }
  29             res[i] = res[i-1] + t;
  30             if (res[i]<min) res[i] = min;
  31             if (res[i]>max) res[i] = max;
  32         }
  33         return res;
  34     }
  35
  36     private static void genOak(int x, int y) {
  37         backMap[x][y] = 15;
  38         backMap[x][y-1] = 15;
  39         backMap[x][y-2] = 15;
  40         backMap[x][y-3] = 15;
  41         backMap[x][y-4] = 16;
  42         backMap[x][y-5] = 16;
  43         backMap[x-1][y-3] = 16;
  44         backMap[x-1][y-4] = 16;
  45         backMap[x+1][y-3] = 16;
  46         backMap[x+1][y-4] = 16;
  47         foreMap[x][y-3] = 16;
  48         foreMap[x][y-4] = 16;
  49         foreMap[x][y-5] = 16;
  50         foreMap[x-1][y-3] = 16;
  51         foreMap[x-1][y-4] = 16;
  52         foreMap[x+1][y-3] = 16;
  53         foreMap[x+1][y-4] = 16;
  54     }
  55
  56     static void genWorld(int width, int height) {
  57         genWorld(width, height, TimeUtils.millis());
  58     }
  59
  60     static void genWorld(int width, int height, long worldseed) {
  61         int dirtH;
  62         seed = worldseed;
  63         rand = new RandomXS128(seed);
  64         foreMap = new int[width][height];
  65         backMap = new int[width][height];
  66         hMap = genLandscape(width, height/8*3, height/8, height/2);
  67         for (int x=0; x<width; x++) {
  68             dirtH = 4+rand.nextInt(2);
  69             for (int y = height- hMap[x]; y<height; y++) {
  70                 if (y==height- hMap[x]) {
  71                     foreMap[x][y] = 2;
  72                     backMap[x][y] = 2;
  73                 } else if (y<height-hMap[x]+dirtH) {
  74                     foreMap[x][y] = 3;
  75                     backMap[x][y] = 3;
  76                 } else if (y<height-1){
  77                     foreMap[x][y] = 1;
  78                     backMap[x][y] = 1;
  79                 } else {
  80                     foreMap[x][y] = 7;
  81                     backMap[x][y] = 7;
  82                 }
  83             }
  84             for (int y = height-64; y<height-1; y++) {
  85                 if (foreMap[x][y]==0){
  86                     foreMap[x][y] = 8;
  87                     backMap[x][y] = 8;
  88                     if (y==height-hMap[x]-1) {
  89                         foreMap[x][y+1] = 3;
  90                     }
  91                 }
  92             }
  93             if (x>2 && x<width-2 && rand.nextInt(100)<5){
  94                 if (foreMap[x][height-hMap[x]-1]==0) {
  95                     genOak(x,height-hMap[x]-1);
  96                 }
  97             }
  98         }
  99     }
 100
 101     static int[][] getForeMap() {
 102         return foreMap;
 103     }
 104
 105     static int[][] getBackMap() {
 106         return backMap;
 107     }
 108
 109     static void clear() {
 110         foreMap = null;
 111         backMap = null;
 112     }
 113 }