I can now draw a map and then render it with the sprites pretty easily. Problem currently is the entities replace their floor tiles so need to fix that.

tests/map.cpp

@@ -112,14 +112,23 @@ TEST_CASE("map image test", "[map-sprite]") {
   LevelManager levels;
   GameLevel level = levels.current();
   Matrix map_tiles = matrix::make(7,7);
-  System::draw_map(level, map_tiles, 2);
-
-  // on level start make one render texture with the base map
   auto render = std::make_shared<sf::RenderTexture>();
-  auto map_sprite = render_map(map_tiles, *render);
+  auto player = level.world->get_the<components::Player>();
+  auto& player_pos = level.world->get<components::Position>(player.entity);
+
+  for(matrix::each_row it{level.map->walls()}; it.next();) {
+    player_pos.location.x = it.x;
+    player_pos.location.y = it.y;
+
+    System::draw_map(level, map_tiles, 2);
+    // on level start make one render texture with the base map
+    auto map_sprite = render_map(map_tiles, *render);
+  }
 
+  /*
   // confirm we get two different maps
   auto out_img = render->getTexture().copyToImage();
   bool worked = out_img.saveToFile("map_render.png");
   REQUIRE(worked);
+  */
 }