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             t = rand.nextInt(7)-3;
  27             if (t>-3 && t<3) t=0; else t/=Math.abs(t);
  28             if (i>width-(max-min)) {
  29                 if (res[i-1]+t<res[0]) t=Math.abs(t);
  30                     else if (res[i-1]+t>res[0]) t=-Math.abs(t);
  31             }
  32             res[i] = res[i-1] + t;
  33             if (res[i]<min) res[i] = min;
  34             if (res[i]>max) res[i] = max;
  35             if (i>=width/2) {
  36                 bMap [i] = 1;
  37                 if (res[i] < 60) res[i] = 60;
  38             } else {
  39                 bMap[i] = 0;
  40             }
  41         }
  42         return res;
  43     }
  44
  45     private static void genCactus(int x, int y) {
  46         foreMap[x][y] = 59;
  47         foreMap[x][y-1] = 59;
  48         foreMap[x][y-2] = 59;
  49     }
  50
  51     private static void genOak(int x, int y) {
  52         backMap[x][y] = 15;
  53         backMap[x][y-1] = 15;
  54         backMap[x][y-2] = 15;
  55         backMap[x][y-3] = 15;
  56         backMap[x][y-4] = 16;
  57         backMap[x][y-5] = 16;
  58         backMap[x-1][y-3] = 16;
  59         backMap[x-1][y-4] = 16;
  60         backMap[x+1][y-3] = 16;
  61         backMap[x+1][y-4] = 16;
  62         foreMap[x][y-3] = 16;
  63         foreMap[x][y-4] = 16;
  64         foreMap[x][y-5] = 16;
  65         foreMap[x-1][y-3] = 16;
  66         foreMap[x-1][y-4] = 16;
  67         foreMap[x+1][y-3] = 16;
  68         foreMap[x+1][y-4] = 16;
  69     }
  70
  71     static void genWorld(int width, int height) {
  72         genWorld(width, height, TimeUtils.millis());
  73     }
  74
  75     static void genWorld(int width, int height, long worldseed) {
  76         int dirtH;
  77         seed = worldseed;
  78         rand = new RandomXS128(seed);
  79         foreMap = new int[width][height];
  80         backMap = new int[width][height];
  81         hMap = genLandscape(width, height/4, height/8, height/2);
  82         for (int x=0; x<width; x++) {
  83             dirtH = 4+rand.nextInt(2);
  84             for (int y = height- hMap[x]; y<height; y++) {
  85                 if (y==height- hMap[x]) {
  86                     switch (bMap[x]) {
  87                         case 0:
  88                             foreMap[x][y] = 2;
  89                             backMap[x][y] = 2;
  90                             break;
  91                         case 1:
  92                             foreMap[x][y] = 10;
  93                             backMap[x][y] = 10;
  94                             break;
  95                     }
  96                 } else if (y<height-hMap[x]+dirtH) {
  97                     switch (bMap[x]) {
  98                         case 0:
  99                             foreMap[x][y] = 3;
 100                             backMap[x][y] = 3;
 101                             break;
 102                         case 1:
 103                             foreMap[x][y] = 10;
 104                             backMap[x][y] = 10;
 105                             break;
 106                     }
 107                 } else if (bMap[x]==1 && y<height-hMap[x]+dirtH+3) {
 108                     foreMap[x][y] = 21;
 109                     backMap[x][y] = 21;
 110                 } else if (y<height-1){
 111                     foreMap[x][y] = 1;
 112                     backMap[x][y] = 1;
 113                 } else {
 114                     foreMap[x][y] = 7;
 115                     backMap[x][y] = 7;
 116                 }
 117             }
 118             for (int y = height-60; y<height-1; y++) {
 119                 if (foreMap[x][y]==0 && bMap[x]!=1){
 120                     foreMap[x][y] = 8;
 121                     if (bMap[x] == 0) {
 122                         if (y==height-60) {
 123                             backMap[x][y] = 2;
 124                         } else {
 125                             backMap[x][y] = 3;
 126                         }
 127                     }
 128                     if (y==height-hMap[x]-1) {
 129                         foreMap[x][y+1] = 3;
 130                         backMap[x][y+1] = 3;
 131                     }
 132                 }
 133             }
 134             if (x>2 && x<width-2 && rand.nextInt(100)<5){
 135                 if (foreMap[x][height-hMap[x]-1]==0 && foreMap[x][height-hMap[x]]==2) {
 136                     genOak(x,height-hMap[x]-1);
 137                 }
 138                 if (foreMap[x][height-hMap[x]-1]==0 && foreMap[x][height-hMap[x]]==10) {
 139                     genCactus(x,height-hMap[x]-1);
 140                 }
 141             }
 142         }
 143     }
 144
 145     static int[][] getForeMap() {
 146         return foreMap;
 147     }
 148
 149     static int[][] getBackMap() {
 150         return backMap;
 151     }
 152
 153     static void clear() {
 154         foreMap = null;
 155         backMap = null;
 156         hMap = null;
 157         bMap = null;
 158     }
 159 }