NOTWORKING: Committing this so I can show the changes I made on the next stream.

main.cpp

@@ -55,7 +55,7 @@ int main() {
     // draw the character
     c.DrawText(10*2, 10*4, "@", Color::Blue);
 
-    return canvas(c) | border;
+    return canvas(c);
   });
 
   while (true) {

map.cpp

@@ -3,6 +3,7 @@
 #include <vector>
 #include <fmt/core.h>
 #include <random>
+#include <utility>
 
 using std::vector, std::pair;
 using namespace fmt;
@@ -89,13 +90,16 @@ void Map::make_paths() {
 }
 
 void Map::make_room(size_t origin_x, size_t origin_y, size_t w, size_t h) {
-  dbc::check(origin_x < width(), "x out of bounds");
-  dbc::check(origin_y < height(), "x out of bounds");
-  dbc::check(w < width(), "x out of bounds");
-  dbc::check(h < height(), "x out of bounds");
+  println("MAKE ROOM x={}, y={}, w={}, h={}", origin_x, origin_y, w, h);
+  dbc::pre("x out of bounds", origin_x < width());
+  dbc::pre("y out of bounds", origin_y < height());
+  dbc::pre("w out of bounds", w < width());
+  dbc::pre("h out of bounds", h < height());
 
   for(size_t y = origin_y; y < origin_y + h; ++y) {
+    dbc::check(y < m_walls.size(), "y is out of bounds");
     for(size_t x = origin_x; x < origin_x + w; ++x) {
+      dbc::check(x < m_walls[y].size(), "x is out of bounds");
       m_walls[y][x] = 0;
     }
   }
@@ -109,27 +113,116 @@ struct Partition {
   size_t width = 0;
   size_t height = 0;
 
-  std::vector<Partition> children;
+  std::vector<Partition> next;
 };
 
 inline int make_split(std::mt19937 &gen, Partition &cur, bool horiz) {
   if(horiz) {
+    println("MAKE SPLIT HORIZ, y={}, y+h={}, h={}",
+        cur.y, cur.y + cur.height, cur.height);
+
     size_t quarter = cur.height / 4;
     // vertical split, pick a random horizontal location
-    std::uniform_int_distribution<int> rhoriz(cur.y + quarter, cur.height - quarter);
+    std::uniform_int_distribution<int> rhoriz(cur.y + quarter, cur.y + cur.height - quarter);
+
     return rhoriz(gen);
   } else {
-    size_t quarter = cur.width / 4;
     // horizontal split, pick a random vertical location
-    std::uniform_int_distribution<int> rvert(cur.x + quarter, cur.width - quarter);
+    println("MAKE SPLIT VERT, x={}, x+w={}, w={}",
+        cur.x, cur.x + cur.width, cur.width);
+
+    size_t quarter = cur.width / 4;
+    std::uniform_int_distribution<int> rvert(cur.x + quarter, cur.x + cur.width - quarter);
     return rvert(gen);
   }
 }
 
+void partition_map(std::mt19937 &gen, Partition &cur, int depth) {
+
+  std::uniform_int_distribution<int> rsplit(0, 1);
+  bool horiz = rsplit(gen);
+  int split = make_split(gen, cur, horiz);
+  Partition left;
+  Partition right;
+
+  if(horiz) {
+    println("HORIZ split={}, x={}, y={}, w={}, h={}",
+        split, cur.x, cur.y, cur.width, cur.height);
+
+    dbc::check(split > 0, "split is not > 0");
+    dbc::check(split < int(cur.y + cur.height), "split is too big!");
+
+    left = {
+      .x = cur.x,
+      .y = cur.y,
+      .width = cur.width,
+      .height = size_t(split - 1)
+    };
+
+    right = {
+      .x = cur.x,
+      .y = cur.y + split,
+      .width = cur.width,
+      .height = size_t(cur.y + cur.height - split)
+    };
+  } else {
+    println("VERT split={}, x={}, y={}, w={}, h={}", split, cur.x, cur.y, cur.width, cur.height);
+
+    dbc::check(split > 0, "split is not > 0");
+    dbc::check(split < int(cur.x + cur.width), "split is too big!");
+
+    left = {
+      .x = cur.x,
+      .y = cur.y,
+      .width = size_t(split-1),
+      .height = cur.height
+    };
+
+    right = {
+      .x = cur.x + split,
+      .y = cur.y,
+      .width = size_t(cur.width - split),
+      .height = cur.height
+    };
+  }
+
+  println("CUR NEXT SIZE={}", cur.next.size());
+
+  if(depth > 0  && left.width > 10 && left.height > 10) {
+    partition_map(gen, left, depth-1);
+  }
+
+  if(depth > 0 && right.width > 10 && right.height > 10) {
+    partition_map(gen, right, depth-1);
+  }
+
+  println("PUSH CHILD!");
+  cur.next.push_back(left);
+  println("PUSH CHILD!");
+  cur.next.push_back(right);
+}
+
+void draw_map(Map *map, Partition &root, Partition &cur) {
+  if(cur.x + cur.width <= map->width()
+      && cur.y + cur.height <= map->height())
+  {
+    map->make_room(cur.x, cur.y, cur.width, cur.height);
+
+    if(cur.next.size() == 2) {
+      draw_map(map, root, cur.next[0]); // left
+      draw_map(map, root, cur.next[1]); // right
+    } else {
+      println("LEAF NODE NO CHILDREN");
+    }
+  } 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());
+  }
+}
+
 void Map::generate() {
   std::random_device rd;
   std::mt19937 gen(rd());
-  std::uniform_int_distribution<int> rsplit(0, 1);
 
   Partition root{
     .x = 1,
@@ -138,22 +231,9 @@ void Map::generate() {
     .height = height() - 2
   };
 
-  Partition &cur = root;
-  bool horiz = rsplit(gen);
-
-  for(int i = 0; i < 1; i++) {
-    int split = make_split(gen, cur, horiz);
-
-    if(horiz) {
-      println("HORIZ split={}, x={}, y={}, w={}, h={}", split, cur.x, cur.y, cur.width, cur.height);
-
-      make_room(cur.x, cur.y, cur.width, split - 1);
-      make_room(cur.x, cur.y + split, cur.width, cur.height - split);
-    } else {
-      println("VERT split={}, x={}, y={}, w={}, h={}", split, cur.x, cur.y, cur.width, cur.height);
-      make_room(cur.x, cur.y, split-1, cur.height);
-      make_room(cur.x + split, cur.y, cur.width - split, cur.height);
-    }
-    horiz = !horiz;
-  }
+  partition_map(gen, root, 3);
+  println("ROOT LEFT HAS {} CHILD", root.next[0].next.size());
+  draw_map(this, root, root.next[0]); // left
+  println("ROOT RIGHT HAS {} CHILD", root.next[1].next.size());
+  draw_map(this, root, root.next[1]); // right
 }