From 49be10956014096853b73b20c08d0ffe83a800e7 Mon Sep 17 00:00:00 2001
From: Sergio Valor <jaildesigner@gmail.com>
Date: Tue, 19 May 2026 19:32:59 +0200
Subject: [PATCH] demo: Title no consumeix dt quan delega a demo_game (era
 doble tick, deixava la demo congelada a frame 0)

---
 source/game/scenes/title.cpp | 62 +++++++++++++++++++-----------------
 1 file changed, 32 insertions(+), 30 deletions(-)

diff --git a/source/game/scenes/title.cpp b/source/game/scenes/title.cpp
index dd2f73a..adfdc1d 100644
--- a/source/game/scenes/title.cpp
+++ b/source/game/scenes/title.cpp
@@ -853,36 +853,9 @@ void Title::applyOptions() {
 
 // Ejecuta un frame
 void Title::iterate() {
-    const float DELTA_TIME_S = DeltaTime::tick();
-
-    // Si las instrucciones están activas, delega el frame
-    if (instructions_active_) {
-        instructions_->update(DELTA_TIME_S);
-        instructions_->render();
-
-        if (instructions_->hasFinished()) {
-            bool was_quit = instructions_->isQuitRequested();
-            delete instructions_;
-            instructions_ = nullptr;
-            instructions_active_ = false;
-
-            if (was_quit) {
-                section_->name = SECTION_PROG_QUIT;
-            } else if (instructions_mode_ == Instructions::Mode::AUTO) {
-                section_->name = SECTION_PROG_TITLE;
-                init();
-                demo_ = true;
-            } else {
-                section_->name = SECTION_PROG_TITLE;
-                section_->subsection = SUBSECTION_TITLE_3;
-            }
-            // Reset del rellotge per evitar un dt enorme al tornar al Title.
-            DeltaTime::reset();
-        }
-        return;
-    }
-
-    // Si el juego demo está activo, delega el frame
+    // Si el joc demo està actiu, NO consumim el dt aqui: el consumeix
+    // Game::iterate() en el seu propi tick(). Cridar-lo dues vegades per frame
+    // deixaria a Game un dt ~0 i la demo no avancaria (ni jugador ni globus).
     if (demo_game_active_) {
         // El demo Game necesita section->name == SECTION_PROG_GAME para funcionar
         section_->name = SECTION_PROG_GAME;
@@ -916,6 +889,35 @@ void Title::iterate() {
         return;
     }
 
+    const float DELTA_TIME_S = DeltaTime::tick();
+
+    // Si las instrucciones están activas, delega el frame
+    if (instructions_active_) {
+        instructions_->update(DELTA_TIME_S);
+        instructions_->render();
+
+        if (instructions_->hasFinished()) {
+            bool was_quit = instructions_->isQuitRequested();
+            delete instructions_;
+            instructions_ = nullptr;
+            instructions_active_ = false;
+
+            if (was_quit) {
+                section_->name = SECTION_PROG_QUIT;
+            } else if (instructions_mode_ == Instructions::Mode::AUTO) {
+                section_->name = SECTION_PROG_TITLE;
+                init();
+                demo_ = true;
+            } else {
+                section_->name = SECTION_PROG_TITLE;
+                section_->subsection = SUBSECTION_TITLE_3;
+            }
+            // Reset del rellotge per evitar un dt enorme al tornar al Title.
+            DeltaTime::reset();
+        }
+        return;
+    }
+
     // Ejecución normal del título
     update(DELTA_TIME_S);
     render();