More cleanup of the raycaster, finally removed the window as a dependency but I went against making it an sf::Drawable since that had a lot of code quality problems.

gui.cpp

@@ -13,7 +13,7 @@ namespace gui {
     $window(sf::VideoMode({SCREEN_WIDTH, SCREEN_HEIGHT}), "Zed's Raycaster Thing"),
     $font{"./assets/text.otf"},
     $text{$font},
-    $rayview($window, $textures, RAY_VIEW_WIDTH, RAY_VIEW_HEIGHT)
+    $rayview($textures, RAY_VIEW_WIDTH, RAY_VIEW_HEIGHT)
     {
       $window.setVerticalSyncEnabled(VSYNC);
       $window.setFramerateLimit(FRAME_LIMIT);
@@ -21,7 +21,6 @@ namespace gui {
       $text.setPosition({10,10});
       $textures.load_tiles();
       $textures.load_sprites();
-      $rayview.init_shaders();
     }
 
   void FSM::event(Event ev) {
@@ -132,13 +131,6 @@ namespace gui {
           case KEY::R:
             $stats.reset();
             break;
-          case KEY::P:
-            if($rayview.$active_shader == nullptr) {
-              $rayview.$active_shader = &$rayview.$paused;
-            } else {
-              $rayview.$active_shader = nullptr;
-            }
-            break;
           default:
             break; // ignored
         }
@@ -182,7 +174,7 @@ namespace gui {
 
   void FSM::render() {
     auto start = std::chrono::high_resolution_clock::now();
-    $rayview.render();
+    $rayview.draw($window);
     auto end = std::chrono::high_resolution_clock::now();
     auto elapsed = std::chrono::duration<double>(end - start);
     $stats.sample(1/elapsed.count());
@@ -194,7 +186,6 @@ namespace gui {
 
   void FSM::mouse() {
     if(sf::Mouse::isButtonPressed(sf::Mouse::Button::Left)) {
-      $rayview.$anim.play(false);
       $rotation = -30.0f;
     } else {
       $rotation = -10.0f;

raycaster.cpp

@@ -32,12 +32,11 @@ inline uint32_t dumb_lighting(uint32_t pixel, double distance) {
   return conv.as_int;
 }
 
-Raycaster::Raycaster(sf::RenderWindow& window, TexturePack &textures, int width, int height) :
+Raycaster::Raycaster(TexturePack &textures, int width, int height) :
   $textures(textures),
   $view_texture({(unsigned int)width, (unsigned int)height}),
   $view_sprite($view_texture),
   $width(width), $height(height),
-  $window(window),
   ZBuffer(width),
   $anim(256, 256, 10, "assets/monster-1.ogg")
 {
@@ -46,13 +45,6 @@ Raycaster::Raycaster(sf::RenderWindow& window, TexturePack &textures, int width,
   $view_texture.setSmooth(false);
 }
 
-void Raycaster::init_shaders() {
-  bool good = $paused.loadFromFile("shaders/modal.frag", sf::Shader::Type::Fragment);
-  dbc::check(good, "shader could not be loaded");
-  $paused.setUniform("offsetFactor", sf::Glsl::Vec2{0.01f, 0.01f});
-  $paused.setUniform("darkness", 0.01f);
-}
-
 void Raycaster::set_position(int x, int y) {
   $view_sprite.setPosition({(float)x, (float)y});
 }
@@ -65,25 +57,19 @@ void Raycaster::position_camera(float player_x, float player_y) {
 
 void Raycaster::draw_pixel_buffer() {
   $view_texture.update((uint8_t *)$pixels.get(), {(unsigned int)$width, (unsigned int)$height}, {0, 0});
-  $window.draw($view_sprite, $active_shader);
 }
 
-void Raycaster::clear() {
+void Raycaster::sprite_casting(sf::RenderTarget &target) {
-  std::fill_n($pixels.get(), $width * $height, 0);
-  $window.clear();
-}
-
-void Raycaster::sprite_casting() {
   const int textureWidth = TEXTURE_WIDTH;
   const int textureHeight = TEXTURE_HEIGHT;
   const int halfHeight = TEXTURE_HEIGHT / 2;
 
   // sort sprites from far to close
-  auto sprite_order = $collision.distance_sorted({(size_t)$posX, (size_t)$posY});
+  auto sprite_order = $level.collision->distance_sorted({(size_t)$posX, (size_t)$posY});
 
   // after sorting the sprites, do the projection
   for(auto& rec : sprite_order) {
-    Sprite& sprite_rec = $sprites[rec.second];
+    const Sprite& sprite_rec = $sprites.at(rec.second);
     // TODO: this must die
     auto sf_sprite = sprite_rec.sprite.sprite;
 
@@ -148,7 +134,7 @@ void Raycaster::sprite_casting() {
       $anim.step(*sf_sprite, texX, texY, texX_end - texX, textureHeight);
       sf_sprite->setPosition({x, y});
 
-      $window.draw(*sf_sprite, $active_shader);
+      target.draw(*sf_sprite);
     }
   }
 }
@@ -333,32 +319,22 @@ void Raycaster::draw_ceiling_floor() {
   }
 }
 
-void Raycaster::render() {
+void Raycaster::draw(sf::RenderTarget& target) {
   draw_ceiling_floor();
   cast_rays();
   draw_pixel_buffer();
-  sprite_casting();
+  target.draw($view_sprite);
-}
+  sprite_casting(target);
-
-bool Raycaster::empty_space(int new_x, int new_y) {
-  dbc::check((size_t)new_x < matrix::width($map),
-      format("x={} too wide={}", new_x, matrix::width($map)));
-  dbc::check((size_t)new_y < matrix::height($map),
-      format("y={} too high={}", new_y, matrix::height($map)));
-
-  return $map[new_y][new_x] == 0;
-}
-
-DinkyECS::Entity Raycaster::position_sprite(Point pos, string name) {
-  auto sprite_txt = $textures.sprite_textures[name];
-  $sprites.emplace_back(pos.x + 0.5, pos.y + 0.5, sprite_txt);
-  DinkyECS::Entity ent = $sprites.size() - 1;
-  $collision.insert({pos.x, pos.y}, ent);
-  return ent;
 }
 
 void Raycaster::set_level(GameLevel level) {
   $level = level;
   auto& tiles = $level.map->tiles();
   $map = $textures.convert_char_to_texture(tiles.$tile_ids);
+
+  // this will need to go away too but for now everything is evil eye
+  for(auto &thing : $level.collision->table) {
+    auto sprite_txt = $textures.sprite_textures.at("evil_eye");
+    $sprites.try_emplace(thing.second, thing.first.x + 0.5, thing.first.y + 0.5, sprite_txt);
+  }
 }

raycaster.hpp

@@ -32,42 +32,26 @@ struct Raycaster {
 
   int $width;
   int $height;
-  sf::RenderWindow& $window;
   GameLevel $level;
   Matrix $map;
-  SpatialMap $collision;
+  std::unordered_map<DinkyECS::Entity, Sprite> $sprites;
-  std::vector<Sprite> $sprites;
   std::vector<double> ZBuffer; // width
   Animator $anim;
-  sf::Shader $paused;
-  sf::Shader* $active_shader = nullptr;
 
-  Raycaster(sf::RenderWindow& window, TexturePack &textures, int width, int height);
+  Raycaster(TexturePack &textures, int width, int height);
 
-  void draw_pixel_buffer();
-  void clear();
   void cast_rays();
   void draw_ceiling_floor();
-  void sprite_casting();
+  void draw_pixel_buffer();
+  void sprite_casting(sf::RenderTarget& target);
+  void draw(sf::RenderTarget& target);
+
   void sort_sprites(std::vector<int>& order, std::vector<double>& dist, int amount);
-  void render();
 
-  bool empty_space(int new_x, int new_y);
   void position_camera(float player_x, float player_y);
-
   void set_position(int x, int y);
-  void init_shaders();
-  DinkyECS::Entity position_sprite(Point pos, string name);
 
   inline size_t pixcoord(int x, int y) {
-    if(!(x >=0 && x < $width)) {
-      dbc::sentinel(fmt::format("pixcoord x={} but $width={}", x, $width));
-    }
-
-    if(!(y >= 0 && y < $height)) {
-      dbc::sentinel(fmt::format("pixcoord y={} but $height={}", y, $height));
-    }
-
     return ((y) * $width) + (x);
   }
 

spatialmap.cpp

@@ -76,7 +76,7 @@ SortedEntities SpatialMap::distance_sorted(Point from) {
     sprite_distance.push_back({inside, rec.second});
   }
 
-  std::sort(sprite_distance.begin(), sprite_distance.end());
+  std::sort(sprite_distance.begin(), sprite_distance.end(), std::greater<>());
 
   return sprite_distance;
 }

tests/spatialmap.cpp

@@ -154,10 +154,10 @@ TEST_CASE("confirm can iterate through all", "[spatialmap-sort]") {
 
     auto sprite_distance = collider.distance_sorted(player);
 
-    int prev_dist = 0;
+    int prev_dist = sprite_distance[0].first;
 
     for(auto dist : sprite_distance) {
-      REQUIRE(prev_dist <= dist.first);
+      REQUIRE(prev_dist >= dist.first);
       prev_dist = dist.first;
     }
   }