Lighting system now works and does illumination for the whole map plus entities, but not walls or multiple lights yet.

map.cpp

@@ -43,9 +43,21 @@ inline void add_neighbors(PointList &neighbors, Matrix &closed, size_t y, size_t
  * can run make_rooms and generate on. It will
  * NOT be valid until you actually run generate.
  */
-Map::Map(size_t width, size_t height) : $limit(1000) {
-  $walls = Matrix(height, MatrixRow(width, INV_WALL));
-  $input_map = Matrix(height, MatrixRow(width, 1));
+Map::Map(size_t width, size_t height) :
+  $limit(1000),
+  $input_map(height, MatrixRow(width, 1)),
+  $walls(height, MatrixRow(width, INV_WALL)),
+  $paths(height, MatrixRow(width, 1)),
+  $lighting(height, MatrixRow(width, 0))
+{
+}
+
+// make explicit
+Map::Map(Matrix input_map, Matrix walls_map, int limit) :
+  $limit(limit),
+  $input_map(input_map),
+  $walls(walls_map)
+{
 }
 
 void Map::make_paths() {