ADD: Update Docs

src/core/game_api.cpp

@@ -640,7 +640,54 @@ void Engine::clear_all_instance_node_offsets(const std::string& instanceName)
 }
 
 // ----------------------------------------------------------------------------
-// Lighting
+// Lighting - Directional (Sunlight)
+// ----------------------------------------------------------------------------
+
+void Engine::set_sunlight_direction(const glm::vec3& dir)
+{
+    if (_engine->_sceneManager)
+    {
+        _engine->_sceneManager->setSunlightDirection(dir);
+    }
+}
+
+glm::vec3 Engine::get_sunlight_direction() const
+{
+    if (_engine->_sceneManager)
+    {
+        return _engine->_sceneManager->getSunlightDirection();
+    }
+    return glm::vec3(0.0f, -1.0f, 0.0f);
+}
+
+void Engine::set_sunlight_color(const glm::vec3& color, float intensity)
+{
+    if (_engine->_sceneManager)
+    {
+        _engine->_sceneManager->setSunlightColor(color, intensity);
+    }
+}
+
+glm::vec3 Engine::get_sunlight_color() const
+{
+    if (_engine->_sceneManager)
+    {
+        return _engine->_sceneManager->getSunlightColor();
+    }
+    return glm::vec3(1.0f);
+}
+
+float Engine::get_sunlight_intensity() const
+{
+    if (_engine->_sceneManager)
+    {
+        return _engine->_sceneManager->getSunlightIntensity();
+    }
+    return 1.0f;
+}
+
+// ----------------------------------------------------------------------------
+// Lighting - Point Lights
 // ----------------------------------------------------------------------------
 
 size_t Engine::add_point_light(const PointLight& light)
@@ -1139,6 +1186,19 @@ void Engine::hot_reload_shaders()
     }
 }
 
+// ----------------------------------------------------------------------------
+// Time
+// ----------------------------------------------------------------------------
+
+float Engine::get_delta_time() const
+{
+    if (_engine->_sceneManager)
+    {
+        return _engine->_sceneManager->getDeltaTime();
+    }
+    return 0.0f;
+}
+
 // ----------------------------------------------------------------------------
 // Statistics
 // ----------------------------------------------------------------------------

src/core/game_api.h

@@ -298,7 +298,20 @@ public:
     void clear_all_instance_node_offsets(const std::string& instanceName);
 
     // ------------------------------------------------------------------------
-    // Lighting
+    // Lighting - Directional (Sunlight)
+    // ------------------------------------------------------------------------
+
+    // Set sunlight direction (normalized automatically)
+    void set_sunlight_direction(const glm::vec3& dir);
+    glm::vec3 get_sunlight_direction() const;
+
+    // Set sunlight color and intensity
+    void set_sunlight_color(const glm::vec3& color, float intensity);
+    glm::vec3 get_sunlight_color() const;
+    float get_sunlight_intensity() const;
+
+    // ------------------------------------------------------------------------
+    // Lighting - Point Lights
     // ------------------------------------------------------------------------
 
     // Add point light (returns index)
@@ -399,6 +412,13 @@ public:
     // Hot reload all changed shaders
     void hot_reload_shaders();
 
+    // ------------------------------------------------------------------------
+    // Time
+    // ------------------------------------------------------------------------
+
+    // Get delta time in seconds for the current frame (clamped to 0.0-0.1)
+    float get_delta_time() const;
+
     // ------------------------------------------------------------------------
     // Statistics (read-only)
     // ------------------------------------------------------------------------