diff --git a/map.cpp b/map.cpp
index 1872dfe..fe11a27 100644
--- a/map.cpp
+++ b/map.cpp
@@ -105,18 +105,7 @@ void Map::make_room(size_t origin_x, size_t origin_y, size_t w, size_t h) {
   }
 }
 
-struct Partition;
-
-struct Partition {
-  size_t x = 0;
-  size_t y = 0;
-  size_t width = 0;
-  size_t height = 0;
-
-  std::vector<Partition> next;
-};
-
-inline int make_split(std::mt19937 &gen, Partition &cur, bool horiz) {
+inline int make_split(std::mt19937 &gen, Room &cur, bool horiz) {
   println("MAKE SPLIT horiz={}, y={}, w={}, h={}", horiz,
         cur.y, cur.width, cur.height);
   size_t dimension = horiz ? cur.height : cur.width;
@@ -127,13 +116,13 @@ inline int make_split(std::mt19937 &gen, Partition &cur, bool horiz) {
   return rand_dim(gen);
 }
 
-void partition_map(std::mt19937 &gen, Partition &cur, int depth) {
+void Map::partition_map(std::mt19937 &gen, Room &cur, int depth) {
   println(">>>> DEPTH: {}", depth);
   std::uniform_int_distribution<int> rsplit(0, 1);
   bool horiz = cur.width > cur.height ? false : true;
   int split = make_split(gen, cur, horiz);
-  Partition left;
-  Partition right;
+  Room left;
+  Room right;
 
   if(horiz) {
     println("HORIZ split={}, x={}, y={}, w={}, h={}",
@@ -193,23 +182,23 @@ void partition_map(std::mt19937 &gen, Partition &cur, int depth) {
   }
 }
 
-void draw_map(Map *map, Partition &cur) {
-  if(cur.x + cur.width <= map->width()
-      && cur.y + cur.height <= map->height())
+void Map::draw_map(Room &cur) {
+  if(cur.x + cur.width <= width()
+      && cur.y + cur.height <= height())
   {
     println("CUR NEXT SIZE: {}", cur.next.size());
     if(cur.next.size() == 1) {
-      draw_map(map, cur.next[0]); // left
+      draw_map(cur.next[0]); // left
     } else if(cur.next.size() == 2) {
-      draw_map(map, cur.next[0]); // left
-      draw_map(map, cur.next[1]); // right
+      draw_map(cur.next[0]); // left
+      draw_map(cur.next[1]); // right
     } else {
       println("LEAF NODE NO CHILDREN x={}, y={}, w={}, h={}", cur.x, cur.y, cur.width, cur.height);
-      map->make_room(cur.x+1, cur.y+1, cur.width-2, cur.height-2);
+      make_room(cur.x+1, cur.y+1, cur.width-2, cur.height-2);
     }
   } else {
     println("ABORT in draw_map, x={}, y={}, w={}, h={}, map.w={}, map.h={}",
-        cur.x, cur.y, cur.width, cur.height, map->width(), map->height());
+        cur.x, cur.y, cur.width, cur.height, width(), height());
   }
 }
 
@@ -217,7 +206,7 @@ void Map::generate() {
   std::random_device rd;
   std::mt19937 gen(rd());
 
-  Partition root{
+  Room root{
     .x = 0,
     .y = 0,
     .width = width(),
@@ -225,5 +214,5 @@ void Map::generate() {
   };
 
   partition_map(gen, root, 6);
-  draw_map(this, root); // left
+  draw_map(root); // left
 }
diff --git a/map.hpp b/map.hpp
index d927d5b..0dedc4d 100644
--- a/map.hpp
+++ b/map.hpp
@@ -2,12 +2,24 @@
 #include <vector>
 #include <utility>
 #include <string>
+#include <random>
 
 struct Pair {
   size_t j = 0;
   size_t i = 0;
 };
 
+struct Room;
+
+struct Room {
+  size_t x = 0;
+  size_t y = 0;
+  size_t width = 0;
+  size_t height = 0;
+
+  std::vector<Room> next;
+};
+
 typedef std::vector<Pair> PairList;
 typedef std::vector<int> MatrixRow;
 typedef std::vector<MatrixRow> Matrix;
@@ -22,7 +34,17 @@ class Map {
   int m_limit = 0;
 public:
 
-  void make_paths();
+  // make explicit
+  Map(Matrix input_map, Matrix walls_map, int limit) :
+    m_input_map(input_map),
+    m_walls(walls_map), m_limit(limit) {
+  }
+
+  // make random
+  Map(size_t width, size_t height);
+
+  // disable copying
+  Map(Map &map) = delete;
 
   Matrix& paths() { return m_paths; }
   Matrix& input_map() { return m_input_map; }
@@ -33,20 +55,14 @@ public:
 
   void make_room(size_t origin_y, size_t origin_x, size_t width, size_t height);
 
+  void generate();
+  void draw_map(Room &root);
+  void make_paths();
+  void partition_map(std::mt19937 &gen, Room &cur, int depth);
+
   void dump() {
     dump_map("PATHS", m_paths);
     dump_map("WALLS", m_walls);
     dump_map("INPUT", m_input_map);
   }
-
-  void generate();
-
-  Map(Matrix input_map, Matrix walls_map, int limit) :
-    m_input_map(input_map),
-    m_walls(walls_map), m_limit(limit) {
-    }
-
-  Map(size_t width, size_t height);
-
-  Map(Map &map) = delete;
 };