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