FoW is now moved into lighting so light determines what's seen not player's last position. Not sure if I like that though.

gui/map_view.cpp

@@ -24,8 +24,7 @@ namespace gui {
     $level(level),
     $map_render(std::make_shared<sf::RenderTexture>()),
     $map_sprite($map_render->getTexture()),
-    $map_tiles(matrix::make(MAP_WIDTH, MAP_HEIGHT)),
-    $fow(matrix::make($level.map->width(), $level.map->height()))
+    $map_tiles(matrix::make(MAP_WIDTH, MAP_HEIGHT))
   {
     auto player = $level.world->get_the<Player>();
     $player_display = $level.world->get<Tile>(player.entity).display;
@@ -33,7 +32,6 @@ namespace gui {
 
   void MapViewUI::update_level(GameLevel &level) {
     $level = level;
-    $fow = matrix::make($level.map->width(), $level.map->height());
   }
 
   void MapViewUI::init() {
@@ -62,19 +60,8 @@ namespace gui {
 
   void MapViewUI::render(sf::RenderWindow &window, int compass_dir) {
     $gui.render(window);
-
-    auto player = $level.world->get_the<components::Player>();
-    auto player_pos = $level.world->get<components::Position>(player.entity).location;
-
-    // NOTE: FoW is probably better done in the lighting system, because it illuminates where you've been.  The light calcs could then simply set the light the player touches to 1 when it's run.
-    for(matrix::circle it{$fow, player_pos, 2.5}; it.next();) {
-      for(int x = it.left; x < it.right; x++) {
-        $fow[it.y][x] = 1;
-      }
-    }
-
-    System::draw_map($level, $map_tiles, $fow, $entity_map);
-    System::render_map($map_tiles, $entity_map, *$map_render, compass_dir, $player_display);
+    System::draw_map($level, $map_tiles, $entity_map);
+    System::render_map($level, $map_tiles, $entity_map, *$map_render, compass_dir, $player_display);
     $map_sprite.setTexture($map_render->getTexture(), true);
     window.draw($map_sprite);
     // $gui.debug_layout(window);

gui/map_view.hpp

@@ -17,7 +17,6 @@ namespace gui {
       std::shared_ptr<sf::RenderTexture> $map_render;
       sf::Sprite $map_sprite;
       matrix::Matrix $map_tiles;
-      matrix::Matrix $fow;
 
       MapViewUI(GameLevel &level);
       void init();

lights.cpp

@@ -12,7 +12,8 @@ namespace lighting {
     $height(matrix::height(tiles)),
     $lightmap(matrix::make($width, $height)),
     $ambient(matrix::make($width, $height)),
-    $paths($width, $height)
+    $paths($width, $height),
+    $fow(matrix::make($width, $height))
   {
     auto& tile_ambient = textures::get_ambient_light();
 
@@ -47,8 +48,9 @@ namespace lighting {
     for(auto point : has_light) {
       for(matrix::compass it{$lightmap, point.x, point.y}; it.next();) {
         if($paths.$paths[it.y][it.x] == WALL_PATH_LIMIT) {
-            $lightmap[it.y][it.x] = light_level(source.strength, 1.5f, point.x, point.y);
+          $lightmap[it.y][it.x] = light_level(source.strength, 1.5f, point.x, point.y);
         }
+        $fow[it.y][it.x] = $lightmap[it.y][it.x];
       }
     }
   }

lights.hpp

@@ -21,6 +21,7 @@ namespace lighting {
     Matrix $lightmap;
     Matrix $ambient;
     Pathing $paths;
+    matrix::Matrix $fow;
 
     LightRender(Matrix& walls);
 

systems.cpp

@@ -526,9 +526,10 @@ bool System::inventory_occupied(GameLevel& level, Entity container_id, const std
 }
 
 
-void System::draw_map(GameLevel& level, Matrix& grid, Matrix& fow, EntityGrid& entity_map) {
+void System::draw_map(GameLevel& level, Matrix& grid, EntityGrid& entity_map) {
   World &world = *level.world;
   Map &map = *level.map;
+  Matrix &fow = level.lights->$fow;
   size_t view_x = matrix::width(grid) - 1;
   size_t view_y = matrix::height(grid) - 1;
 
@@ -571,13 +572,15 @@ void System::draw_map(GameLevel& level, Matrix& grid, Matrix& fow, EntityGrid& e
   });
 }
 
-
-void System::render_map(Matrix& tiles, EntityGrid& entity_map, sf::RenderTexture& render, int compass_dir, wchar_t player_display) {
+void System::render_map(GameLevel& level, Matrix& tiles, EntityGrid& entity_map, sf::RenderTexture& render, int compass_dir, wchar_t player_display) {
   sf::Vector2i tile_sprite_dim{MAP_TILE_DIM,MAP_TILE_DIM};
   unsigned int width = matrix::width(tiles);
   unsigned int height = matrix::height(tiles);
   sf::Vector2u dim{width * tile_sprite_dim.x, height * tile_sprite_dim.y};
   auto render_size = render.getSize();
+  Matrix &fow = level.lights->$fow;
+  (void)level;
+  (void)fow;
 
   if(render_size.x != width || render_size.y != height) {
     bool worked = render.resize(dim);
@@ -608,6 +611,7 @@ void System::render_map(Matrix& tiles, EntityGrid& entity_map, sf::RenderTexture
       sprite.setPosition({float(point.x * tile_sprite_dim.x), float(point.y * tile_sprite_dim.y)});
     }
 
+
     render.draw(sprite);
   }
 

systems.hpp

@@ -39,6 +39,6 @@ namespace System {
   void inventory_swap(GameLevel &level, Entity container_id, const std::string& a_name, const std::string &b_name);
   bool inventory_occupied(GameLevel& level, Entity container_id, const std::string& name);
 
-  void draw_map(GameLevel& level, Matrix& grid, Matrix& fow, EntityGrid& entity_map);
-  void render_map(Matrix& tiles, EntityGrid& entity_map, sf::RenderTexture& render, int compass_dir, wchar_t player_display);
+  void draw_map(GameLevel& level, Matrix& grid, EntityGrid& entity_map);
+  void render_map(GameLevel& level, Matrix& tiles, EntityGrid& entity_map, sf::RenderTexture& render, int compass_dir, wchar_t player_display);
 }

tests/map.cpp

@@ -100,12 +100,8 @@ TEST_CASE("map image test", "[map-sprite]") {
   for(matrix::each_row it{level.map->walls()}; it.next();) {
     player_pos.location.x = it.x;
     player_pos.location.y = it.y;
-    size_t width = level.map->width();
-    size_t height = level.map->height();
-
-    Matrix fow = matrix::make(width, height);
-    System::draw_map(level, map_tiles, fow, entity_map);
-    System::render_map(map_tiles, entity_map, *render, 2, player_display);
+    System::draw_map(level, map_tiles, entity_map);
+    System::render_map(level, map_tiles, entity_map, *render, 2, player_display);
 
 #ifdef TEST_RENDER
     // confirm we get two different maps