You can now go down stairs to new levels, but when you do you become stairs or a random monster.

assets/config.json

@@ -6,8 +6,8 @@
 
   },
   "worldgen": {
-    "enemy_probability": 10,
-    "empty_room_probability": 60,
+    "enemy_probability": 20,
+    "empty_room_probability": 10,
     "device_probability": 100
   }
 }

dinkyecs.hpp

@@ -58,13 +58,20 @@ namespace DinkyECS {
     template <typename Comp>
       Comp &get_the() {
         auto comp_id = std::type_index(typeid(Comp));
-        dbc::check($facts.contains(comp_id), "!!!! ATTEMPT to access world fact that hasn't been set yet.");
+        dbc::check($facts.contains(comp_id),
+            fmt::format("!!!! ATTEMPT to access world fact that hasn't been set yet: {}", typeid(Comp).name()));
 
         // use .at to get std::out_of_range if fact not set
         std::any &res = $facts.at(comp_id);
         return std::any_cast<Comp&>(res);
       }
 
+    template <typename Comp>
+      bool has_the() {
+        auto comp_id = std::type_index(typeid(Comp));
+        return $facts.contains(comp_id);
+      }
+
     template <typename Comp>
       void set(Entity ent, Comp val) {
         EntityMap &map = entity_map_for<Comp>();

gui.cpp

@@ -69,8 +69,8 @@ void InventoryUI::create_render() {
   $inventory_box = Menu(&$menu_list, &$selected, option);
 
   $inventory_render = Renderer([&] {
-    auto &player = $world.get_the<Player>();
-    auto &inventory = $world.get<Inventory>(player.entity);
+    auto &player = $level.world->get_the<Player>();
+    auto &inventory = $level.world->get<Inventory>(player.entity);
     update_menu_list(inventory);
 
     return hbox({
@@ -101,12 +101,12 @@ void InventoryUI::update_menu_list(Inventory& inventory) {
 }
 
 void StatusUI::create_render() {
-  auto player = $world.get_the<Player>();
+  auto player = $level.world->get_the<Player>();
 
   auto status_rend = Renderer([&, player]{
-    const auto& player_combat = $world.get<Combat>(player.entity);
-    const auto& inventory = $world.get<Inventory>(player.entity);
-    const auto& combat = $world.get<Combat>(player.entity);
+    const auto& player_combat = $level.world->get<Combat>(player.entity);
+    const auto& inventory = $level.world->get<Inventory>(player.entity);
+    const auto& combat = $level.world->get<Combat>(player.entity);
     $status_text = player_combat.hp > 0 ? "NOT DEAD" : "DEAD!!!!!!";
 
     std::vector<Element> log_list;
@@ -136,23 +136,27 @@ void StatusUI::create_render() {
   set_renderer(status_rend);
 }
 
-MapViewUI::MapViewUI(DinkyECS::World& world, LightRender& lights, Map& game_map) :
+MapViewUI::MapViewUI(GameLevel &level) :
   Panel(GAME_MAP_PIXEL_POS, 0, 0, 0, true),
-  $world(world), $lights(lights), $game_map(game_map)
+  $level(level)
 {}
 
+void MapViewUI::update_level(GameLevel &level) {
+  $level = level;
+}
+
 void MapViewUI::draw_map() {
-  const auto& debug = $world.get_the<Debug>();
-  const auto& player = $world.get_the<Player>();
-  const auto& player_position = $world.get<Position>(player.entity);
-  Point start = $game_map.center_camera(player_position.location, width, height);
-  auto &tiles = $game_map.tiles();
-  auto &paths = $game_map.paths();
-  auto &lighting = $lights.lighting();
+  const auto& debug = $level.world->get_the<Debug>();
+  const auto& player = $level.world->get_the<Player>();
+  const auto& player_position = $level.world->get<Position>(player.entity);
+  Point start = $level.map->center_camera(player_position.location, width, height);
+  auto &tiles = $level.map->tiles();
+  auto &paths = $level.map->paths();
+  auto &lighting = $level.lights->lighting();
 
   // WARN: this is exploiting that -1 in size_t becomes largest
-  size_t end_x = std::min(size_t(width), $game_map.width() - start.x);
-  size_t end_y = std::min(size_t(height), $game_map.height() - start.y);
+  size_t end_x = std::min(size_t(width), $level.map->width() - start.x);
+  size_t end_y = std::min(size_t(height), $level.map->height() - start.y);
 
   for(size_t y = 0; y < end_y; ++y) {
     for(size_t x = 0; x < end_x; ++x)
@@ -178,7 +182,7 @@ void MapViewUI::draw_map() {
     }
   }
 
-  System::draw_entities($world, $game_map, lighting, $canvas, start, width, height);
+  System::draw_entities(*$level.world, *$level.map, lighting, $canvas, start, width, height);
 }
 
 void MapViewUI::create_render() {
@@ -195,9 +199,9 @@ void MapViewUI::resize_canvas() {
 
 GUI::GUI() :
   $level($level_manager.current()),
-  $status_ui(*$level.world),
-  $map_view(*$level.world, *$level.lights, *$level.map),
-  $inventory_ui(*$level.world),
+  $status_ui($level),
+  $map_view($level),
+  $inventory_ui($level),
   $sounds("./assets")
 {
   // this needs a config file soon
@@ -291,7 +295,7 @@ void GUI::handle_world_events() {
 
           $status_ui.log(format("Up stairs has test {}.",
                 (bool)device.config["test"]));
-          toggle_modal(&$next_level_ui, $next_level);
+          // toggle_modal(&$next_level_ui, $next_level);
        } break;
       default:
         $status_ui.log(format("INVALID EVENT! {},{}", evt, entity));
@@ -502,5 +506,15 @@ int GUI::main(bool run_once) {
 }
 
 void GUI::next_level() {
+  size_t index = $level_manager.create_level($level.world);
+  fmt::println("LEVEL manager returned index: {}", index);
 
+  auto &level = $level_manager.next();
+  $status_ui.update_level(level);
+  $inventory_ui.update_level(level);
+  $map_view.update_level(level);
+  $level = level;
+
+  render_scene();
+  run_systems();
 }

gui.hpp

@@ -79,16 +79,19 @@ class InventoryUI : public Panel {
   Component $inventory_box;
   Component $inventory_render;
   Component $inventory_table;
-  DinkyECS::World& $world;
+  GameLevel $level;
   std::vector<std::string> $menu_list;
   std::string $item_text = "No item selected.";
 
-  InventoryUI(DinkyECS::World& world) :
+  InventoryUI(GameLevel level) :
     Panel(INVENTORY_PIXEL_X, INVENTORY_PIXEL_Y, INVENTORY_WIDTH, INVENTORY_HEIGHT),
-    $world(world)
+    $level(level)
   {}
 
   void create_render();
+
+  void update_level(GameLevel &level) { $level = level; }
+
   void update_menu_list(components::Inventory& inventory);
 };
 
@@ -96,40 +99,42 @@ class StatusUI : public Panel {
   public:
   ActionLog $log;
   string $status_text = "NOT DEAD";
-  DinkyECS::World& $world;
+  GameLevel $level;
 
-  StatusUI(DinkyECS::World& world) :
+  StatusUI(GameLevel level) :
     Panel(0, 0, STATUS_UI_WIDTH, STATUS_UI_HEIGHT),
     $log({{"Welcome to the game!"}}),
-    $world(world) {}
+    $level(level) {}
 
   void create_render();
   void log(string msg) {
     $log.log(msg);
   }
+  void update_level(GameLevel &level) { $level = level; }
 };
 
 class MapViewUI : public Panel {
   public:
     Canvas $canvas;
-    DinkyECS::World& $world;
-    LightRender& $lights;
-    Map& $game_map;
+    GameLevel $level;
 
-    MapViewUI(DinkyECS::World& world, LightRender& lights, Map& game_map);
+    MapViewUI(GameLevel &level);
     void create_render();
     void resize_canvas();
     void draw_map();
+    void update_level(GameLevel &level);
 };
 
 class GUI {
   LevelManager $level_manager;
-  GameLevel &$level;
+  GameLevel $level;
+
   StatusUI $status_ui;
   MapViewUI $map_view;
   InventoryUI $inventory_ui;
   DeathUI $death_ui;
   NextLevelUI $next_level_ui;
+
   Canvas $canvas;
   bool $inventory_open = false;
   bool $player_died = false;

levelmanager.cpp

@@ -3,20 +3,40 @@
 #include "constants.hpp"
 #include "save.hpp"
 #include "systems.hpp"
+#include "components.hpp"
 
 using lighting::LightRender;
 using std::shared_ptr, std::make_shared;
+using namespace components;
 
 LevelManager::LevelManager() {
   create_level();
 }
 
-
-size_t LevelManager::create_level() {
+size_t LevelManager::create_level(shared_ptr<DinkyECS::World> prev_world) {
   auto world = make_shared<DinkyECS::World>();
   save::load_configs(*world);
 
   auto map = make_shared<Map>(GAME_MAP_X, GAME_MAP_Y);
+
+  if(prev_world != nullptr) {
+    auto player = prev_world->get_the<Player>();
+    world->set_the<Player>(player);
+
+    auto inventory = prev_world->get<Inventory>(player.entity);
+    world->set<Inventory>(player.entity, inventory);
+
+    world->set_the<Debug>(prev_world->get_the<Debug>());
+    auto& combat = prev_world->get<Combat>(player.entity);
+    world->set<Combat>(player.entity, combat);
+
+    auto& motion = prev_world->get<Motion>(player.entity);
+    world->set<Motion>(player.entity, motion);
+
+    auto& tile = prev_world->get<Tile>(player.entity);
+    world->set<Tile>(player.entity, tile);
+  }
+
   WorldBuilder builder(*map);
   builder.generate(*world);
 

levelmanager.hpp

@@ -7,13 +7,14 @@
 #include <memory>
 #include "spatialmap.hpp"
 
+using std::shared_ptr;
 
 struct GameLevel {
   size_t index;
-  std::shared_ptr<Map> map;
-  std::shared_ptr<DinkyECS::World> world;
-  std::shared_ptr<lighting::LightRender> lights;
-  std::shared_ptr<SpatialMap> collision;
+  shared_ptr<Map> map;
+  shared_ptr<DinkyECS::World> world;
+  shared_ptr<lighting::LightRender> lights;
+  shared_ptr<SpatialMap> collision;
 };
 
 class LevelManager {
@@ -23,7 +24,7 @@ class LevelManager {
 
   LevelManager();
 
-  size_t create_level();
+  size_t create_level(shared_ptr<DinkyECS::World> prev_world = nullptr);
   GameLevel &next();
   GameLevel &previous();
   GameLevel &current();

worldbuilder.cpp

@@ -226,12 +226,16 @@ void WorldBuilder::place_entities(DinkyECS::World &world) {
   auto &config = world.get_the<GameConfig>();
   // configure a player as a fact of the world
 
-  auto player_data = config.enemies["PLAYER_TILE"];
-  auto player_ent = configure_entity_in_map(world, $map, player_data, 0);
-  // configure player in the world
-  Player player{player_ent};
-  world.set_the<Player>(player);
-  world.set<Inventory>(player.entity, {5});
+  if(world.has_the<Player>()) {
+    fmt::println("PLAYER ALREADY EXISTS LEAVING ALONE");
+  } else {
+    auto player_data = config.enemies["PLAYER_TILE"];
+    auto player_ent = configure_entity_in_map(world, $map, player_data, 0);
+    // configure player in the world
+    Player player{player_ent};
+    world.set_the<Player>(player);
+    world.set<Inventory>(player.entity, {5});
+  }
 
   randomize_entities(world, config);
 }