Mostly pulled out all of the ftxui rendering into cleaner areas.

map.cpp

@@ -286,6 +286,13 @@ void Map::clear_target(Point &at) {
   input_map_[at.y][at.x] = 1;
 }
 
+Point Map::place_entity(size_t room_index) {
+  dbc::check(room_index < rooms_.size(), "room_index is out of bounds, not enough rooms");
+
+  Room &start = rooms_[room_index];
+  return {start.x+1, start.y+1};
+}
+
 void Map::generate() {
   Room root{
     .x = 0,