From a40130d79ba67cb052d8e5ee36d3fe3ba63d4b94 Mon Sep 17 00:00:00 2001
From: Kamil Chojnowski <diath@zodiaclabs.org>
Date: Sat, 5 Jan 2019 22:14:36 +0100
Subject: [PATCH] Fix magic effect animations in newer client versions

---
 src/client/animator.cpp | 32 ++++++++++++++++++++++++++++++--
 src/client/animator.h   |  3 +++
 src/client/effect.cpp   | 36 +++++++++++++++++++++++++++++-------
 src/client/effect.h     |  1 -
 4 files changed, 62 insertions(+), 10 deletions(-)

diff --git a/src/client/animator.cpp b/src/client/animator.cpp
index c81077ba..0382f291 100644
--- a/src/client/animator.cpp
+++ b/src/client/animator.cpp
@@ -123,6 +123,24 @@ int Animator::getPhase()
     return m_phase;
 }
 
+int Animator::getPhaseAt(ticks_t time)
+{
+    int index = 0;
+    ticks_t total = 0;
+
+    for(const auto &pair: m_phaseDurations) {
+        total += std::get<1>(pair);
+
+        if (time < total) {
+            return index;
+        }
+
+        ++index;
+    }
+
+    return std::min<int>(index, m_animationPhases - 1);
+}
+
 int Animator::getStartPhase()
 {
     if(m_startPhase > -1)
@@ -157,7 +175,7 @@ int Animator::getLoopPhase()
 
     if(m_loopCount == 0)
         return 0;
-        
+
     if(m_currentLoop < (m_loopCount - 1)) {
         m_currentLoop++;
         return 0;
@@ -182,7 +200,7 @@ void Animator::calculateSynchronous()
     int totalDuration = 0;
     for(int i = 0; i < m_animationPhases; i++)
         totalDuration += getPhaseDuration(i);
-    
+
     ticks_t ticks = g_clock.millis();
     int elapsedTicks = (int)(ticks % totalDuration);
     int totalTime = 0;
@@ -197,3 +215,13 @@ void Animator::calculateSynchronous()
     }
     m_lastPhaseTicks = ticks;
 }
+
+ticks_t Animator::getTotalDuration()
+{
+    ticks_t time = 0;
+    for (const auto &pair: m_phaseDurations) {
+        time += std::get<1>(pair);
+    }
+
+    return time;
+}
diff --git a/src/client/animator.h b/src/client/animator.h
index 93d0e1ef..2bf7f845 100644
--- a/src/client/animator.h
+++ b/src/client/animator.h
@@ -50,12 +50,15 @@ public:
 
     void setPhase(int phase);
     int getPhase();
+    int getPhaseAt(ticks_t time);
 
     int getStartPhase();
     int getAnimationPhases() { return m_animationPhases; }
     bool isAsync() { return m_async; }
     bool isComplete() { return m_isComplete; }
 
+    ticks_t getTotalDuration();
+
     void resetAnimation();
 
 private:
diff --git a/src/client/effect.cpp b/src/client/effect.cpp
index 0ea74a6a..60f254bd 100644
--- a/src/client/effect.cpp
+++ b/src/client/effect.cpp
@@ -22,6 +22,7 @@
 
 #include "effect.h"
 #include "map.h"
+#include "game.h"
 #include <framework/core/eventdispatcher.h>
 
 void Effect::drawEffect(const Point& dest, float scaleFactor, bool animate, int offsetX, int offsetY, LightView *lightView)
@@ -30,8 +31,20 @@ void Effect::drawEffect(const Point& dest, float scaleFactor, bool animate, int
         return;
 
     int animationPhase = 0;
-    if(animate)
-        animationPhase = std::min<int>((int)(m_animationTimer.ticksElapsed() / m_phaseDuration), getAnimationPhases() - 1);
+    if(animate) {
+        if(g_game.getFeature(Otc::GameEnhancedAnimations)) {
+            // This requires a separate getPhaseAt method as using getPhase would make all magic effects use the same phase regardless of their appearance time
+            animationPhase = rawGetThingType()->getAnimator()->getPhaseAt(m_animationTimer.ticksElapsed());
+        } else {
+            // hack to fix some animation phases duration, currently there is no better solution
+            int ticks = EFFECT_TICKS_PER_FRAME;
+            if (m_id == 33) {
+                ticks <<= 2;
+            }
+
+            animationPhase = std::min<int>((int)(m_animationTimer.ticksElapsed() / ticks), getAnimationPhases() - 1);
+        }
+    }
 
     int xPattern = offsetX % getNumPatternX();
     if(xPattern < 0)
@@ -47,15 +60,24 @@ void Effect::drawEffect(const Point& dest, float scaleFactor, bool animate, int
 void Effect::onAppear()
 {
     m_animationTimer.restart();
-    m_phaseDuration = EFFECT_TICKS_PER_FRAME;
 
-    // hack to fix some animation phases duration, currently there is no better solution
-    if(m_id == 33)
-        m_phaseDuration <<= 2;
+    int duration = 0;
+    if(g_game.getFeature(Otc::GameEnhancedAnimations)) {
+        duration = getThingType()->getAnimator()->getTotalDuration();
+    } else {
+        duration = EFFECT_TICKS_PER_FRAME;
+
+        // hack to fix some animation phases duration, currently there is no better solution
+        if(m_id == 33) {
+            duration <<= 2;
+        }
+
+        duration *= getAnimationPhases();
+    }
 
     // schedule removal
     auto self = asEffect();
-    g_dispatcher.scheduleEvent([self]() { g_map.removeThing(self); }, m_phaseDuration * getAnimationPhases());
+    g_dispatcher.scheduleEvent([self]() { g_map.removeThing(self); }, duration);
 }
 
 void Effect::setId(uint32 id)
diff --git a/src/client/effect.h b/src/client/effect.h
index 74e757cd..00a9cdfb 100644
--- a/src/client/effect.h
+++ b/src/client/effect.h
@@ -51,7 +51,6 @@ protected:
 
 private:
     Timer m_animationTimer;
-    uint m_phaseDuration;
     uint16 m_id;
 };