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     private static int[] bMap; //biomes, 0-plains, 1-desert
  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         bMap = new int[width];
  23         int t;
  24         res[0] = mid;
  25         for (int i=1; i<width; i++) {
  26             bMap[i] = i/(width/2);
  27             t = rand.nextInt(7)-3;
  28             if (t>-3 && t<3) t=0; else t/=Math.abs(t);
  29             if (i>width-(max-min)) {
  30                 if (res[i-1]+t<res[0]) t=Math.abs(t);
  31                     else if (res[i-1]+t>res[0]) t=-Math.abs(t);
  32             }
  33             res[i] = res[i-1] + t;
  34             if (res[i]<min) res[i] = min;
  35             if (res[i]>max) res[i] = max;
  36         }
  37         return res;
  38     }
  39
  40     private static void genCactus(int x, int y) {
  41         foreMap[x][y] = 59;
  42         foreMap[x][y-1] = 59;
  43         foreMap[x][y-2] = 59;
  44     }
  45
  46     private static void genOak(int x, int y) {
  47         backMap[x][y] = 15;
  48         backMap[x][y-1] = 15;
  49         backMap[x][y-2] = 15;
  50         backMap[x][y-3] = 15;
  51         backMap[x][y-4] = 16;
  52         backMap[x][y-5] = 16;
  53         backMap[x-1][y-3] = 16;
  54         backMap[x-1][y-4] = 16;
  55         backMap[x+1][y-3] = 16;
  56         backMap[x+1][y-4] = 16;
  57         foreMap[x][y-3] = 16;
  58         foreMap[x][y-4] = 16;
  59         foreMap[x][y-5] = 16;
  60         foreMap[x-1][y-3] = 16;
  61         foreMap[x-1][y-4] = 16;
  62         foreMap[x+1][y-3] = 16;
  63         foreMap[x+1][y-4] = 16;
  64     }
  65
  66     static void genWorld(int width, int height) {
  67         genWorld(width, height, TimeUtils.millis());
  68     }
  69
  70     static void genWorld(int width, int height, long worldseed) {
  71         int dirtH;
  72         seed = worldseed;
  73         rand = new RandomXS128(seed);
  74         foreMap = new int[width][height];
  75         backMap = new int[width][height];
  76         hMap = genLandscape(width, height/8*3, height/8, height/2);
  77         for (int x=0; x<width; x++) {
  78             dirtH = 4+rand.nextInt(2);
  79             for (int y = height- hMap[x]; y<height; y++) {
  80                 if (y==height- hMap[x]) {
  81                     switch (bMap[x]) {
  82                         case 0:
  83                             foreMap[x][y] = 2;
  84                             backMap[x][y] = 2;
  85                             break;
  86                         case 1:
  87                             foreMap[x][y] = 10;
  88                             backMap[x][y] = 10;
  89                             break;
  90                     }
  91                 } else if (y<height-hMap[x]+dirtH) {
  92                     switch (bMap[x]) {
  93                         case 0:
  94                             foreMap[x][y] = 3;
  95                             backMap[x][y] = 3;
  96                             break;
  97                         case 1:
  98                             foreMap[x][y] = 10;
  99                             backMap[x][y] = 10;
 100                             break;
 101                     }
 102                 } else if (bMap[x]==1 && y<height-hMap[x]+dirtH+3) {
 103                     foreMap[x][y] = 21;
 104                     backMap[x][y] = 21;
 105                 } else if (y<height-1){
 106                     foreMap[x][y] = 1;
 107                     backMap[x][y] = 1;
 108                 } else {
 109                     if (bMap[x]==0) {
 110                         foreMap[x][y] = 7;
 111                         backMap[x][y] = 7;
 112                     }
 113                 }
 114             }
 115             for (int y = height-60; y<height-1; y++) {
 116                 if (foreMap[x][y]==0 && bMap[x]!=1){
 117                     foreMap[x][y] = 8;
 118                     backMap[x][y] = 8;
 119                     if (y==height-hMap[x]-1) {
 120                         foreMap[x][y+1] = 3;
 121                     }
 122                 }
 123             }
 124             if (x>2 && x<width-2 && rand.nextInt(100)<5){
 125                 if (foreMap[x][height-hMap[x]-1]==0 && foreMap[x][height-hMap[x]]==2) {
 126                     genOak(x,height-hMap[x]-1);
 127                 }
 128                 if (foreMap[x][height-hMap[x]-1]==0 && foreMap[x][height-hMap[x]]==10) {
 129                     genCactus(x,height-hMap[x]-1);
 130                 }
 131             }
 132         }
 133     }
 134
 135     static int[][] getForeMap() {
 136         return foreMap;
 137     }
 138
 139     static int[][] getBackMap() {
 140         return backMap;
 141     }
 142
 143     static void clear() {
 144         foreMap = null;
 145         backMap = null;
 146     }
 147 }