Fix ping pong hang

Fixes issue introduced by #4770

Diffs=
4c5a576ad Fix ping pong hang (#4776)

.rive_head

diff --git a/.rive_head b/.rive_head
index ea7d744..4ead8a7 100644
--- a/.rive_head
+++ b/.rive_head
@@ -1 +1 @@
-ae1e02afcf18840b4b66d2ba419a26a437057ba5
+4c5a576adaf493b2a152fb69b68021c07aca385f

src/animation/linear_animation_instance.cpp

diff --git a/src/animation/linear_animation_instance.cpp b/src/animation/linear_animation_instance.cpp
index e4f16be..702398e 100644
--- a/src/animation/linear_animation_instance.cpp
+++ b/src/animation/linear_animation_instance.cpp
@@ -68,7 +68,7 @@
     bool didLoop = false;
     m_SpilledTime = 0.0f;
 
-    int direction = speed() * m_Direction < 0 ? -1 : 1;
+    int direction = speed() < 0 ? -m_Direction : m_Direction;
     switch (loop())
     {
         case Loop::oneShot:
@@ -136,6 +136,7 @@
                     // where animations are not advanced on regular intervals.
                     break;
                 }
+                direction = speed() < 0 ? -m_Direction : m_Direction;
             }
             break;
     }

test/draw_order_test.cpp

diff --git a/test/draw_order_test.cpp b/test/draw_order_test.cpp
index 8567648..c217f36 100644
--- a/test/draw_order_test.cpp
+++ b/test/draw_order_test.cpp
@@ -3,6 +3,7 @@
 #include <rive/shapes/clipping_shape.hpp>
 #include <rive/shapes/rectangle.hpp>
 #include <rive/shapes/shape.hpp>
+#include <rive/animation/linear_animation_instance.hpp>
 #include "utils/no_op_renderer.hpp"
 #include "rive_file_reader.hpp"
 #include <catch.hpp>
@@ -13,17 +14,26 @@
     auto file = ReadRiveFile("../../test/assets/draw_rule_cycle.riv");
 
     // auto file = reader.file();
-    // auto node = file->artboard()->node("TopEllipse");
-    // REQUIRE(node != nullptr);
-    // REQUIRE(node->is<rive::Shape>());
-
+    std::unique_ptr<rive::ArtboardInstance> artboard = file->artboardDefault();
+    auto node = artboard->find<rive::Node>("Blue");
+    REQUIRE(node != nullptr);
+    REQUIRE(node->is<rive::Shape>());
     // auto shape = node->as<rive::Shape>();
-    // REQUIRE(shape->clippingShapes().size() == 2);
-    // REQUIRE(shape->clippingShapes()[0]->shape()->name() == "ClipRect2");
-    // REQUIRE(shape->clippingShapes()[1]->shape()->name() == "BabyEllipse");
 
-    // file->artboard()->updateComponents();
+    artboard->updateComponents();
+    REQUIRE(artboard->animationCount() == 1);
 
-    // rive::NoOpRenderer renderer;
-    // file->artboard()->draw(&renderer);
+    // Check that we can advance the ping-pong animation with 1 second duration
+    // without a hang.
+    std::unique_ptr<rive::LinearAnimationInstance> animation = artboard->animationAt(0);
+    // Advance and apply some frames.
+    int frames = 10;
+    float frameDuration = 1.0f;
+
+    for (int i = 0; i < frames; i++)
+    {
+        animation->advanceAndApply(frameDuration);
+        rive::NoOpRenderer renderer;
+        artboard->draw(&renderer);
+    }
 }

test/linear_animation_instance_test.cpp

diff --git a/test/linear_animation_instance_test.cpp b/test/linear_animation_instance_test.cpp
index 07f06ad..073cc15 100644
--- a/test/linear_animation_instance_test.cpp
+++ b/test/linear_animation_instance_test.cpp
@@ -277,6 +277,29 @@
     REQUIRE(linearAnimationInstance->direction() == -1);
     REQUIRE(linearAnimationInstance->didLoop() == true);
     REQUIRE(continuePlaying == true);
+    // pingpong at the start and come back to 6.
+    continuePlaying = linearAnimationInstance->advance(9.0);
+    REQUIRE(linearAnimationInstance->time() == 4.0);
+    REQUIRE(linearAnimationInstance->totalTime() == 16.0);
+    REQUIRE(linearAnimationInstance->direction() == -1);
+    REQUIRE(linearAnimationInstance->didLoop() == true);
+    REQUIRE(continuePlaying == true);
+
+    // pingpong back around to 2
+    continuePlaying = linearAnimationInstance->advance(6.0);
+    REQUIRE(linearAnimationInstance->time() == 2.0);
+    REQUIRE(linearAnimationInstance->totalTime() == 22.0);
+    REQUIRE(linearAnimationInstance->direction() == 1);
+    REQUIRE(linearAnimationInstance->didLoop() == true);
+    REQUIRE(continuePlaying == true);
+
+    // Loop around twice in a frame.
+    continuePlaying = linearAnimationInstance->advance(20.0);
+    REQUIRE(linearAnimationInstance->time() == 2.0);
+    REQUIRE(linearAnimationInstance->totalTime() == 42.0);
+    REQUIRE(linearAnimationInstance->direction() == 1);
+    REQUIRE(linearAnimationInstance->didLoop() == true);
+    REQUIRE(continuePlaying == true);
 
     delete linearAnimationInstance;
     delete linearAnimation;