Add landscape

[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 96aedf3be559de55122d66030c3c0d6a0c4ee84d..84f0ae1b7591fe64d52368e6f3bc9019223186c9 100644 (file)
--- a/core/src/ru/deadsoftware/cavecraft/game/WorldGen.java
+++ b/core/src/ru/deadsoftware/cavecraft/game/WorldGen.java
@@ -1,18 +1,37 @@
 package ru.deadsoftware.cavecraft.game;
 
+import com.badlogic.gdx.math.RandomXS128;
+import com.badlogic.gdx.utils.TimeUtils;
+
 public class WorldGen {
 
     private static int[][] foreMap, backMap;
+    private static int[] noise;
+
+    static int[] genNoise(int width, int mid, int min, int max) {
+        RandomXS128 rand = new RandomXS128(TimeUtils.millis());
+        int[] res = new int[width];
+        int t;
+        res[0] = mid;
+        for (int i=1; i<width; i++) {
+            t = rand.nextInt(3)-1;
+            res[i] = res[i-1] + t;
+            if (res[i]<min) res[i] = min;
+            if (res[i]>max) res[i] = max;
+        }
+        return res;
+    }
 
     static void genWorld(int width, int height) {
         foreMap = new int[width][height];
         backMap = new int[width][height];
+        noise = genNoise(width, height/2, 1, height);
         for (int x=0; x<width; x++) {
-            for (int y=height-8; y<height; y++) {
-                if (y==height-8) {
+            for (int y=height-noise[x]; y<height; y++) {
+                if (y==height-noise[x]) {
                     foreMap[x][y] = 3;
                     backMap[x][y] = 3;
-                } else if (y<height-4) {
+                } else if (y<height-noise[x]+4) {
                     foreMap[x][y] = 2;
                     backMap[x][y] = 2;
                 } else {