fix for unexpected triggered events

fixes #7226
This PR fixes reports of events when animations are playing backward.
It considers both the timeline speed and the state machine state speed to determine direction.
It also handles not reporting an event twice if it comes from a "ping pong" loop.
It also adds a small performance improvement, skipping the binary search if possible.

Diffs=
265c00985 fix for unexpected triggered events (#7227)
8a538c243 validating core objects property keys on load (#7298)
cd6210f42 Make ContourMeasure more robust (#7294)
405b8ef90 use world bounds for coarse grained collision test (#7287)
3734d9bac initialize seed with chrono (#7285)
45b998e68 Simple libjpeg (#7277)

Co-authored-by: hernan <hernan@rive.app>

.rive_head

@@ -1 +1 @@
-67ed7133f0fa1f390afa1829b074fa8c686fd648
+265c009852e86492deb69277ad18aa2c394c93e5

lib/src/rive_core/animation/keyed_object.dart

@@ -71,7 +71,7 @@ class KeyedObject extends KeyedObjectBase<RuntimeArtboard> {
     double secondsFrom,
     double secondsTo, {
     required KeyedCallbackReporter reporter,
-    int secondsFromExactOffset = 1,
+    bool isAtStartFrame = false,
   }) {
     for (final keyedProperty
         in _keyedProperties.values.where((property) => property.isCallback)) {
@@ -80,7 +80,7 @@ class KeyedObject extends KeyedObjectBase<RuntimeArtboard> {
         secondsFrom,
         secondsTo,
         reporter: reporter,
-        secondsFromExactOffset: secondsFromExactOffset,
+        isAtStartFrame: isAtStartFrame,
       );
     }
   }

lib/src/rive_core/animation/keyed_property.dart

@@ -115,14 +115,18 @@ class KeyedProperty extends KeyedPropertyBase<RuntimeArtboard>
   KeyFrame getFrameAt(int index) => _keyframes[index];
 
   int closestFrameIndex(double seconds, {int exactOffset = 0}) {
-    int idx = 0;
     // Binary find the keyframe index (use timeInSeconds here as opposed to the
     // finder above which operates in frames).
     int mid = 0;
     double closestSeconds = 0;
     int start = 0;
     int end = _keyframes.length - 1;
 
+    // If it's the last keyframe, we skip the binary search
+    if (seconds > _keyframes[end].seconds) {
+      return end + 1;
+    }
+
     while (start <= end) {
       mid = (start + end) >> 1;
       closestSeconds = _keyframes[mid].seconds;
@@ -133,9 +137,8 @@ class KeyedProperty extends KeyedPropertyBase<RuntimeArtboard>
       } else {
         return mid + exactOffset;
       }
-      idx = start;
     }
-    return idx;
+    return start;
   }
 
   bool get isCallback => RiveCoreContext.isCallback(propertyKey);
@@ -146,11 +149,25 @@ class KeyedProperty extends KeyedPropertyBase<RuntimeArtboard>
     double secondsFrom,
     double secondsTo, {
     required KeyedCallbackReporter reporter,
-    int secondsFromExactOffset = 1,
+    bool isAtStartFrame = false,
   }) {
-    int idx =
-        closestFrameIndex(secondsFrom, exactOffset: secondsFromExactOffset);
-    int idxTo = closestFrameIndex(secondsTo, exactOffset: 1);
+    if (secondsFrom == secondsTo) {
+      return;
+    }
+    bool isForward = secondsFrom <= secondsTo;
+    int fromExactOffset = 0;
+    int toExactOffset = isForward ? 1 : 0;
+    if (isForward) {
+      if (!isAtStartFrame) {
+        fromExactOffset = 1;
+      }
+    } else {
+      if (isAtStartFrame) {
+        fromExactOffset = 1;
+      }
+    }
+    int idx = closestFrameIndex(secondsFrom, exactOffset: fromExactOffset);
+    int idxTo = closestFrameIndex(secondsTo, exactOffset: toExactOffset);
 
     // going backwards?
     if (idxTo < idx) {

lib/src/rive_core/animation/linear_animation.dart

@@ -77,18 +77,23 @@ class LinearAnimation extends LinearAnimationBase {
     double secondsFrom,
     double secondsTo, {
     required KeyedCallbackReporter reporter,
+    int speedDirection = 1,
+    bool fromPong = false,
   }) {
-    int secondsFromExactOffset = startTime == secondsFrom &&
-            (speed >= 0 ? secondsFrom < secondsTo : secondsFrom < secondsTo)
-        ? 0
-        : 1;
-    for (final keyedObject in _keyedObjects.values) {
-      keyedObject.reportKeyedCallbacks(
-        secondsFrom,
-        secondsTo,
-        reporter: reporter,
-        secondsFromExactOffset: secondsFromExactOffset,
-      );
+    // We have to account for the state machine speed multiplier and the speed
+    double startingTime =
+        ((speed * speedDirection) >= 0) ? startSeconds : endSeconds;
+    bool isAtStartFrame = startingTime == secondsFrom;
+
+    if (!isAtStartFrame || !fromPong) {
+      for (final keyedObject in _keyedObjects.values) {
+        keyedObject.reportKeyedCallbacks(
+          secondsFrom,
+          secondsTo,
+          reporter: reporter,
+          isAtStartFrame: isAtStartFrame,
+        );
+      }
     }
   }
 

lib/src/rive_core/animation/linear_animation_instance.dart

@@ -5,6 +5,7 @@ import 'package:rive/src/rive_core/animation/loop.dart';
 
 class LinearAnimationInstance {
   final LinearAnimation animation;
+  final int _speedDirection;
 
   double _time = 0;
   double _totalTime = 0;
@@ -20,7 +21,8 @@ class LinearAnimationInstance {
 
   LinearAnimationInstance(this.animation, {double speedMultiplier = 1.0})
       : _time =
-            (speedMultiplier >= 0) ? animation.startTime : animation.endTime;
+            (speedMultiplier >= 0) ? animation.startTime : animation.endTime,
+        _speedDirection = (speedMultiplier >= 0) ? 1 : -1;
 
   /// NOTE: that when time is set, the direction will be changed to 1
   set time(double value) {
@@ -107,6 +109,7 @@ class LinearAnimationInstance {
         lastTime,
         _time,
         reporter: callbackReporter,
+        speedDirection: _speedDirection,
       );
     }
 
@@ -146,6 +149,7 @@ class LinearAnimationInstance {
               lastTime,
               _time,
               reporter: callbackReporter,
+              speedDirection: _speedDirection,
             );
           }
           didLoop = true;
@@ -160,13 +164,16 @@ class LinearAnimationInstance {
               lastTime,
               _time,
               reporter: callbackReporter,
+              speedDirection: _speedDirection,
             );
           }
           didLoop = true;
         }
         break;
       case Loop.pingPong:
         // ignore: literal_only_boolean_expressions
+        // In ping-pong we only want to report callbacks once per side
+        bool fromPong = true;
         while (true) {
           if (direction == 1 && frames >= end) {
             _spilledTime = (frames - end) / animation.fps;
@@ -193,8 +200,11 @@ class LinearAnimationInstance {
               lastTime,
               _time,
               reporter: callbackReporter,
+              speedDirection: _speedDirection,
+              fromPong: fromPong,
             );
           }
+          fromPong = !fromPong;
         }
         break;
     }