Finally have the boss fight rendering into a render texture correctly. The 'flipped' problem was because I didn't call .display() in render.

animation.cpp

@@ -41,7 +41,6 @@ namespace components {
 
     if(playing && current < frames) {
       float tick = twitching();
-      fmt::print("tick: {}\r", tick);
 
       if(stationary) {
         switch(motion) {

boss/ui.cpp

@@ -8,8 +8,11 @@ namespace boss {
   UI::UI(components::AnimatedScene& scene, Entity boss_id) :
     $boss_id(boss_id),
     $combat_ui(true),
-    $arena(scene)
+    $arena(scene),
+    $view_texture({BOSS_VIEW_WIDTH, BOSS_VIEW_HEIGHT}),
+    $view_sprite($view_texture.getTexture())
   {
+    $view_sprite.setPosition({BOSS_VIEW_X, BOSS_VIEW_Y});
   }
 
   void UI::init() {
@@ -37,13 +40,15 @@ namespace boss {
   void UI::render(sf::RenderWindow& window) {
     $actions.render(window);
     $combat_ui.render(window);
-    $arena.render(window);
+    $arena.render($view_texture);
+    $view_texture.display();
+    window.draw($view_sprite);
   }
 
   bool UI::mouse(float x, float y, Modifiers mods) {
-    return $arena.mouse(x, y, mods)
-      || $combat_ui.mouse(x, y, mods)
-      || $actions.mouse(x, y, mods);
+    // BUG: arena is getting the _window_ coordinates, not the rendertexture
+    return $combat_ui.mouse(x, y, mods)
+      || $actions.mouse(x, y, mods) || $arena.mouse(x, y, mods);
   }
 
   void UI::status(const std::wstring& msg) {

boss/ui.hpp

@@ -12,6 +12,8 @@ namespace boss {
     gui::CombatUI $combat_ui;
     scene::Engine $arena;
     guecs::UI $actions;
+    sf::RenderTexture $view_texture;
+    sf::Sprite $view_sprite;
 
     UI(components::AnimatedScene &scene, DinkyECS::Entity boss_id);
 

scene.cpp

@@ -50,7 +50,7 @@ namespace scene {
   }
 
   void Engine::init() {
-    $ui.position(SCREEN_WIDTH-BOSS_VIEW_WIDTH,0, BOSS_VIEW_WIDTH, SCREEN_HEIGHT);
+    $ui.position(0,0, BOSS_VIEW_WIDTH, BOSS_VIEW_HEIGHT);
     $ui.set<guecs::Background>($ui.MAIN, {$ui.$parser, guecs::THEME.TRANSPARENT});
     auto& background = $ui.get<guecs::Background>($ui.MAIN);
     background.set_sprite($scene.background, true);
@@ -72,7 +72,7 @@ namespace scene {
     return $ui.mouse(x, y, mods);
   }
 
-  void Engine::render(sf::RenderWindow& window) {
+  void Engine::render(sf::RenderTarget& window) {
     $ui.render(window);
 
     for(auto& fixture : $fixtures) {

scene.hpp

@@ -35,7 +35,7 @@ namespace scene {
     Engine(components::AnimatedScene& scene);
 
     void init();
-    void render(sf::RenderWindow& window);
+    void render(sf::RenderTarget& window);
     bool mouse(float x, float y, guecs::Modifiers mods);
 
     sf::Vector2f position_sprite(textures::SpriteTexture& st, const std::string& cell_name, float scale_x, float scale_y, bool at_mid, float x_diff=0.0f, float y_diff=0.0f);

wraps/lel-guecs.wrap

@@ -1,6 +1,6 @@
 [wrap-git]
-directory=lel-guecs-0.6.0
-url=https://git.learnjsthehardway.com/learn-code-the-hard-way/lel-guecs.git
+directory=lel-guecs-0.7.0
+url=https://git.zedshaw.games/games/lel-guecs.git
 revision=HEAD
 depth=1
 method=meson