Ciclic worlds

[cavedroid.git] / core / src / ru / deadsoftware / cavecraft / game / WorldGen.java

diff --git a/core/src/ru/deadsoftware/cavecraft/game/WorldGen.java b/core/src/ru/deadsoftware/cavecraft/game/WorldGen.java
index faf98ed5e50e815b37863bd314f9922c6e83b8ef..ccbe50a2ad29dd08e95581e749741a36a767f1ef 100644 (file)
--- a/core/src/ru/deadsoftware/cavecraft/game/WorldGen.java
+++ b/core/src/ru/deadsoftware/cavecraft/game/WorldGen.java
@@ -1,16 +1,96 @@
 package ru.deadsoftware.cavecraft.game;
 
+import com.badlogic.gdx.math.RandomXS128;
+import com.badlogic.gdx.utils.TimeUtils;
+
 public class WorldGen {
 
+    private static RandomXS128 rand;
+    private static long seed;
+
     private static int[][] foreMap, backMap;
+    private static int[] hMap;
+
+    public static long getSeed() {
+        return seed;
+    }
+
+    static int[] genLandscape(int width, int mid, int min, int max) {
+        int[] res = new int[width];
+        int t;
+        res[0] = mid;
+        for (int i=1; i<width; i++) {
+            t = rand.nextInt(3)-1;
+            if (i>width-(max-min)) {
+                if (res[i-1]+t<res[0]) t=Math.abs(t);
+                    else if (res[i-1]+t>res[0]) t=-Math.abs(t);
+            }
+            res[i] = res[i-1] + t;
+            if (res[i]<min) res[i] = min;
+            if (res[i]>max) res[i] = max;
+        }
+        return res;
+    }
+
+    private static void genOak(int x, int y) {
+        backMap[x][y] = 15;
+        backMap[x][y-1] = 15;
+        backMap[x][y-2] = 15;
+        backMap[x][y-3] = 15;
+        backMap[x][y-4] = 16;
+        backMap[x][y-5] = 16;
+        backMap[x-1][y-3] = 16;
+        backMap[x-1][y-4] = 16;
+        backMap[x+1][y-3] = 16;
+        backMap[x+1][y-4] = 16;
+        foreMap[x][y-3] = 16;
+        foreMap[x][y-4] = 16;
+        foreMap[x][y-5] = 16;
+        foreMap[x-1][y-3] = 16;
+        foreMap[x-1][y-4] = 16;
+        foreMap[x+1][y-3] = 16;
+        foreMap[x+1][y-4] = 16;
+    }
 
     static void genWorld(int width, int height) {
+        genWorld(width, height, TimeUtils.millis());
+    }
+
+    static void genWorld(int width, int height, long worldseed) {
+        int dirtH;
+        seed = worldseed;
+        rand = new RandomXS128(seed);
         foreMap = new int[width][height];
         backMap = new int[width][height];
+        hMap = genLandscape(width, height/8*3, height/8, height/2);
         for (int x=0; x<width; x++) {
-            for (int y=height-16; y<height; y++) {
-                foreMap[x][y]=1;
-                backMap[x][y]=1;
+            dirtH = 4+rand.nextInt(2);
+            for (int y = height- hMap[x]; y<height; y++) {
+                if (y==height- hMap[x]) {
+                    foreMap[x][y] = 2;
+                    backMap[x][y] = 2;
+                } else if (y<height-hMap[x]+dirtH) {
+                    foreMap[x][y] = 3;
+                    backMap[x][y] = 3;
+                } else if (y<height-1){
+                    foreMap[x][y] = 1;
+                    backMap[x][y] = 1;
+                } else {
+                    foreMap[x][y] = 7;
+                    backMap[x][y] = 7;
+                }
+            }
+            for (int y = height-64; y<height-1; y++) {
+                if (foreMap[x][y]==0){
+                    foreMap[x][y] = 8;
+                    backMap[x][y] = 8;
+                    if (y==height-hMap[x]-1) {
+                        foreMap[x][y+1] = 3;
+                    }
+                }
+            }
+            if (x>2 && x<width-2 && rand.nextInt(100)<5){
+                if (foreMap[x][height-hMap[x]]-1==0) genOak(x,height-hMap[x]-1);
             }
         }
     }