Added simpliest world generator

Author: Vyacheslav

VoxelGame_UnityProject/Assets/VoxelGame/Voxel/Scripts/Generators/SinGenerator.cs

@@ -0,0 +1,39 @@
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace VoxelGame.Voxel
+{
+    public class SinGenerator : IGenerator
+    {
+        public void GenerateMap(Vector3Int position, ref byte[,,] map)
+        {
+            if (map == null)
+                return;
+
+            int lengthX = map.GetLength(0);
+            int lengthY = map.GetLength(1);
+            int lengthZ = map.GetLength(2);
+
+            if (lengthX == 0 || lengthY == 0 || lengthZ == 0)
+                return;
+
+            float waveScale = 0.1f;
+            float waveHeight = 0.05f;
+            float waveYOffset = 0.25f;
+
+            for (int x = 0; x < lengthX; x++)
+                for (int z = 0; z < lengthZ; z++)
+                    for (int y = 0; y < lengthY; y++)
+                    {
+                        float h = ((Mathf.Sin((position.x + x) * waveScale) + Mathf.Cos((position.z + z) * waveScale) + 2) * waveHeight + waveYOffset) * VoxelData.chunkHeight;
+
+                        map[x, y, z] = y < h ? Voxels.STONE : Voxels.AIR;
+                    }
+        }
+
+        public void GenerateChunkStructures(Vector2Int coords, ref byte[,,] map)
+        {
+            // no structures
+        }
+    }
+}