Remember last animation set by user and restart next time

include/Animation/AnimationController.h

@@ -22,6 +22,12 @@ class AnimationController
             NUM_DEFAULT_ANIMATIONS
         };
 
+        enum AnimationInitiator {
+            NONE,
+            INTERNAL,
+            USER
+        };
+
         static const constexpr std::array<const char*, NUM_DEFAULT_ANIMATIONS> AnimationNames{
             "Hot Fire",
             "Cold Fire",
@@ -33,8 +39,8 @@ class AnimationController
 
         AnimationController(Fader *fader);
 
-        void changeAnimation(std::unique_ptr<Animation> anim, bool transition = true);
-        void changeAnimation(DefaultAnimation animation_id, bool transition = true);
+        void changeAnimation(std::unique_ptr<Animation> anim, bool transition = true, AnimationInitiator animInitiator = INTERNAL);
+        void changeAnimation(DefaultAnimation animation_id, bool transition = true, AnimationInitiator animInitiator = INTERNAL);
 
         void loop(void);
 
@@ -46,6 +52,10 @@ class AnimationController
             return !m_animation || (m_animation->finished() && !m_nextAnimation);
         }
 
+        uint32_t currentFrame(void) { return m_frame; }
+        AnimationInitiator animationInitiator(void) { return m_animationInitiator; }
+        DefaultAnimation lastDefaultAnimation(void) { return m_lastDefaultAnimation; }
+
     private:
         Fader *m_fader;
         std::unique_ptr<Animation> m_animation;
@@ -54,4 +64,7 @@ class AnimationController
         SemaphoreHandle_t m_updateMutex;
 
         uint64_t m_frame;
+
+        AnimationInitiator m_animationInitiator;
+        DefaultAnimation m_lastDefaultAnimation;
 };

src/Animation/AnimationController.cpp

@@ -10,12 +10,13 @@ const constexpr
 
 
 AnimationController::AnimationController(Fader *fader)
-    : m_fader(fader), m_animation(nullptr), m_frame(0)
+    : m_fader(fader), m_animation(nullptr), m_frame(0), m_animationInitiator(NONE), m_lastDefaultAnimation(FIRE_HOT)
 {
     m_updateMutex = xSemaphoreCreateMutex();
 }
 
-void AnimationController::changeAnimation(std::unique_ptr<Animation> anim, bool transition)
+void AnimationController::changeAnimation(std::unique_ptr<Animation> anim, bool transition,
+    AnimationController::AnimationInitiator animInitiator)
 {
     xSemaphoreTake(m_updateMutex, portMAX_DELAY);
 
@@ -32,29 +33,30 @@ void AnimationController::changeAnimation(std::unique_ptr<Animation> anim, bool
     xSemaphoreGive(m_updateMutex);
 }
 
-void AnimationController::changeAnimation(AnimationController::DefaultAnimation animation_id, bool transition)
+void AnimationController::changeAnimation(AnimationController::DefaultAnimation animation_id, bool transition,
+    AnimationController::AnimationInitiator animInitiator)
 {
     std::unique_ptr<Animation> anim(nullptr);
 
     switch(animation_id) {
         case FIRE_HOT:
-            changeAnimation(std::unique_ptr<Animation>(new FireAnimation(m_fader, false)), transition);
+            anim.reset(new FireAnimation(m_fader, false));
             break;
 
         case FIRE_COLD:
-            changeAnimation(std::unique_ptr<Animation>(new FireAnimation(m_fader, true)), transition);
+            anim.reset(new FireAnimation(m_fader, true));
             break;
 
         case SNOWFALL:
-            changeAnimation(std::unique_ptr<Animation>(new SnowfallAnimation(m_fader)), transition);
+            anim.reset(new SnowfallAnimation(m_fader));
             break;
 
         case MATRIX_CODE:
-            changeAnimation(std::unique_ptr<Animation>(new MatrixCodeAnimation(m_fader)), transition);
+            anim.reset(new MatrixCodeAnimation(m_fader));
             break;
 
         case FIREWORK:
-            changeAnimation(std::unique_ptr<Animation>(new FireworkAnimation(m_fader, 64, 1)), transition);
+            anim.reset(new FireworkAnimation(m_fader, 64, 1));
             break;
 
         case FONT_TEST:
@@ -69,6 +71,12 @@ void AnimationController::changeAnimation(AnimationController::DefaultAnimation
         default:
             return; // unknown id, do nothing
     }
+
+    m_lastDefaultAnimation = animation_id;
+
+    if(anim) {
+        changeAnimation(std::move(anim), transition, animInitiator);
+    }
 }
 
 void AnimationController::loop(void)

src/WebServer.cpp

@@ -172,7 +172,8 @@ void WebServer::handleSetAnim(httpsserver::HTTPRequest *req, httpsserver::HTTPRe
 
     WebServer::instance().m_animController->changeAnimation(
         static_cast<AnimationController::DefaultAnimation>(anim_id),
-        true);
+        true,
+        AnimationController::USER);
 }
 
 void WebServer::handleListAnim(httpsserver::HTTPRequest *req, httpsserver::HTTPResponse *res)

src/main.cpp

@@ -105,6 +105,56 @@ enum LEDState {
   TRANSITION_FADE2BLACK
 };
 
+static AnimationController::DefaultAnimation loadSavedAnimation(void)
+{
+  size_t ret;
+
+  File f = SPIFFS.open("/dyn/last_anim");
+  if(!f) {
+    // error, but return something useful
+    goto readErr;
+  }
+
+  AnimationController::DefaultAnimation anim;
+
+  ret = f.readBytes(reinterpret_cast<char*>(&anim), sizeof(anim));
+
+  if(ret != sizeof(anim)) {
+    goto readErr;
+  }
+
+  f.close();
+
+  return anim;
+
+readErr:
+  return AnimationController::FIRE_COLD;
+}
+
+static void updateSavedAnimation(AnimationController::DefaultAnimation newSavedAnim)
+{
+  AnimationController::DefaultAnimation oldSavedAnim = loadSavedAnimation();
+
+  if(oldSavedAnim == newSavedAnim) {
+    return;
+  }
+
+  SPIFFS.mkdir("/dyn/");
+  File f = SPIFFS.open("/dyn/last_anim", "w");
+
+  if(!f) {
+    return;
+  }
+
+  size_t ret = f.write(reinterpret_cast<const uint8_t*>(&newSavedAnim), sizeof(newSavedAnim));
+
+  if(ret != sizeof(newSavedAnim)) {
+    // failed
+  }
+
+  f.close();
+}
+
 static void ledFSM(void)
 {
   static bool stateEntered = true;
@@ -147,7 +197,8 @@ static void ledFSM(void)
 
       // change to last used animation after some time
       if((millis() - stateEnteredTime) > 60000) {
-        animController.changeAnimation(std::unique_ptr<Animation>(new FireAnimation(&ledFader, false)), true);
+        // FIXME: does not work with transition because of restart() call in ANIMATION state
+        animController.changeAnimation(loadSavedAnimation(), false);
         ledState = ANIMATION;
       }
       break;
@@ -165,6 +216,11 @@ static void ledFSM(void)
         nextState = UDP;
         ledState = TRANSITION;
       }
+
+      if((animController.animationInitiator() == AnimationController::USER) &&
+          (animController.currentFrame() == 60*60)) { // FIXME: #define FPS and use everywhere
+        updateSavedAnimation(animController.lastDefaultAnimation());
+      }
       break;
 
     case UDP: