fix layers generation

src/world/generator/WorldGenerator.cpp

@@ -40,7 +40,7 @@ static inline void generate_pole(
         } else {
             layerHeight += layerExtension;
         }
-        layerHeight = std::min(static_cast<uint>(layerHeight), y);
+        layerHeight = std::min(static_cast<uint>(layerHeight), y+1);
 
         for (uint i = 0; i < layerHeight; i++, y--) {
             voxels[vox_index(x, y, z)].id = layer.rt.id;

src/world/generator/WorldGenerator.hpp

@@ -26,17 +26,18 @@ struct ChunkPrototype {
 
 /// @brief High-level world generation controller
 class WorldGenerator {
+    /// @param def generator definition
     const GeneratorDef& def;
+    /// @param content world content
     const Content* content;
+    /// @param seed world seed
     uint64_t seed;
 
-    std::vector<std::unique_ptr<ChunkPrototype>> chunks;
+    /// @brief Generate chunk prototype (see ChunkPrototype)
-
+    /// @param x chunk position X divided by CHUNK_W
+    /// @param z chunk position Y divided by CHUNK_D
     std::unique_ptr<ChunkPrototype> generatePrototype(int x, int z);
 public:
-    /// @param def generator definition
-    /// @param content world content
-    /// @param seed world seed
     WorldGenerator(
         const GeneratorDef& def,
         const Content* content,