Algos directory is setup.

src/algos/maze.hpp

@@ -0,0 +1,29 @@
+#pragma once
+#include "algos/matrix.hpp"
+#include "map.hpp"
+
+namespace maze {
+
+
+  struct Builder {
+    Matrix& $walls;
+    std::vector<Room>& $rooms;
+    std::vector<Point>& $dead_ends;
+
+    Builder(Map& map) :
+      $walls(map.$walls), $rooms(map.$rooms), $dead_ends(map.$dead_ends)
+    {
+      init();
+    }
+
+    void hunt_and_kill(Point on={1,1});
+
+    void init();
+    void randomize_rooms();
+    void inner_donut(float outer_rad, float inner_rad);
+    void inner_box(size_t outer_size, size_t inner_size);
+    void divide(Point start, Point end);
+    void remove_dead_ends();
+    void dump(const std::string& msg);
+  };
+}