Use double for volume

Author: adazem009

include/scratchcpp/target.h

@@ -68,8 +68,8 @@ class LIBSCRATCHCPP_EXPORT Target
         int layerOrder() const;
         void setLayerOrder(int newLayerOrder);
 
-        int volume() const;
-        void setVolume(int newVolume);
+        double volume() const;
+        void setVolume(double newVolume);
 
         IEngine *engine() const;
         void setEngine(IEngine *engine);

src/scratch/target.cpp

@@ -338,13 +338,13 @@ void Target::setLayerOrder(int newLayerOrder)
 }
 
 /*! Returns the volume. */
-int Target::volume() const
+double Target::volume() const
 {
     return impl->volume;
 }
 
 /*! Sets the volume. */
-void Target::setVolume(int newVolume)
+void Target::setVolume(double newVolume)
 {
     impl->volume = newVolume;
 }

src/scratch/target_p.h

@@ -30,7 +30,7 @@ struct TargetPrivate
         std::vector<std::shared_ptr<Costume>> costumes;
         std::vector<std::shared_ptr<Sound>> sounds;
         int layerOrder = 0;
-        int volume = 100;
+        double volume = 100;
 };
 
 } // namespace libscratchcpp

test/scratch_classes/target_test.cpp

@@ -386,8 +386,8 @@ TEST(TargetTest, Volume)
 {
     Target target;
     ASSERT_EQ(target.volume(), 100);
-    target.setVolume(50);
-    ASSERT_EQ(target.volume(), 50);
+    target.setVolume(52.08);
+    ASSERT_EQ(target.volume(), 52.08);
 }
 
 TEST(TargetTest, Engine)