Kind of working save now, but does have problems with dead things.

components.hpp

@@ -28,7 +28,7 @@ namespace components {
   };
 
   struct Tile {
-    std::string chr = "!";
+    std::string chr;
     DEFINE_SERIALIZABLE(Tile, chr);
   };
 

main.cpp

@@ -8,8 +8,10 @@
 #include "render.hpp"
 #include "save.hpp"
 #include "ftxui/screen/terminal.hpp"  // for SetColorSupport, Color, TrueColor
+#include <filesystem>
 
 using namespace ftxui;
+namespace fs = std::filesystem;
 
 /*
  * This needs to be turned into a real world generator
@@ -48,14 +50,21 @@ void configure_world(DinkyECS::World &world, Map &game_map) {
 }
 
 
-int main() {
+int main(int argc, char *argv[]) {
   DinkyECS::World world;
 
   Map game_map(GAME_MAP_X, GAME_MAP_Y);
-  game_map.generate();
 
   save::load_configs(world);
+
+  if(argc == 2) {
+    fmt::println("Loading save file {}", argv[1]);
+    fs::path save_path{argv[1]};
+    save::from_file(save_path, world, game_map);
+  } else {
+    game_map.generate();
     configure_world(world, game_map);
+  }
 
   spatial_map collider;
   world.set_the<spatial_map>(collider);

save.cpp

@@ -26,6 +26,7 @@ void save::to_file(fs::path path, DinkyECS::World &world, Map &map) {
   extract<Position>(world, save_data.position);
   extract<Combat>(world, save_data.combat);
   extract<Motion>(world, save_data.motion);
+  extract<Tile>(world, save_data.tile);
 
   archive.save(save_data);
   std::string_view archive_view = archive.get_buffer();
@@ -66,6 +67,7 @@ void save::from_file(fs::path path, DinkyECS::World &world_out, Map &map_out) {
   inject<Position>(world_out, save_data.position);
   inject<Combat>(world_out, save_data.combat);
   inject<Motion>(world_out, save_data.motion);
+  inject<Tile>(world_out, save_data.tile);
 
   map_out = Map(save_data.map.input_map,
       save_data.map.walls, save_data.map.limit);

save.hpp

@@ -32,8 +32,9 @@ namespace save {
     std::map<DinkyECS::Entity, components::Position> position;
     std::map<DinkyECS::Entity, components::Motion> motion;
     std::map<DinkyECS::Entity, components::Combat> combat;
+    std::map<DinkyECS::Entity, components::Tile> tile;
 
-    DEFINE_SERIALIZABLE(SaveData, facts, map, position, motion, combat);
+    DEFINE_SERIALIZABLE(SaveData, facts, map, position, motion, combat, tile);
   };
 
   void to_file(fs::path path, DinkyECS::World &world, Map &map);

tests/save.cpp

@@ -66,6 +66,7 @@ TEST_CASE("basic save a world", "[save]") {
   world.set<Position>(player.entity, {10,10});
   world.set<Motion>(player.entity, {0, 0});
   world.set<Combat>(player.entity, {100, 10});
+  world.set<Tile>(player.entity, {"@"});
 
   save::to_file("./savetest.world", world, map);
 
@@ -78,15 +79,19 @@ TEST_CASE("basic save a world", "[save]") {
   REQUIRE(position1.location.x == position2.location.x);
   REQUIRE(position1.location.y == position2.location.y);
 
-  Combat &combat1 = in_world.get<Combat>(player.entity);
+  Combat &combat1 = world.get<Combat>(player.entity);
   Combat &combat2 = in_world.get<Combat>(player.entity);
   REQUIRE(combat1.hp == combat2.hp);
 
-  Motion &motion1 = in_world.get<Motion>(player.entity);
+  Motion &motion1 = world.get<Motion>(player.entity);
   Motion &motion2 = in_world.get<Motion>(player.entity);
   REQUIRE(motion1.dx == motion2.dx);
   REQUIRE(motion1.dy == motion2.dy);
 
+  Tile &tile1 = world.get<Tile>(player.entity);
+  Tile &tile2 = in_world.get<Tile>(player.entity);
+  REQUIRE(tile1.chr == tile2.chr);
+
   REQUIRE(map.width() == in_map.width());
   REQUIRE(map.height() == in_map.height());
   REQUIRE(map.$walls == in_map.$walls);