various small fixes

Author: jube

games/HOME/bits/WorldResources.cc

@@ -92,7 +92,7 @@ namespace home {
     oxygen_icon.data.color = gf::darker(to_color(SupplyType::Oxygen));
   }
 
-  gf::ResourceBundle WorldResources::bundle(GameHub* hub)
+  gf::ResourceBundle WorldResources::bundle(GameHub* hub) const
   {
     gf::BundleBuilder builder(hub);
 

games/HOME/bits/WorldResources.h

@@ -15,7 +15,7 @@ namespace home {
   struct WorldResources {
     WorldResources();
 
-    gf::ResourceBundle bundle(GameHub* hub);
+    gf::ResourceBundle bundle(GameHub* hub) const;
 
     gf::RichMapResource map;
 

library/audio/AudioManager.cc

@@ -63,12 +63,12 @@ namespace gf {
 
   AudioListener AudioManager::default_listener()
   {
-    return AudioListener(engine(), 0);
+    return {engine(), 0};
   }
 
   AudioListener AudioManager::closest_listener(Vec3F position)
   {
-    return AudioListener(engine(), ma_engine_find_closest_listener(engine(), position.x, position.y, position.z));
+    return {engine(), ma_engine_find_closest_listener(engine(), position.x, position.y, position.z)};
   }
 
   ma_engine* AudioManager::engine()

library/audio/AudioSource.cc

@@ -201,7 +201,7 @@ namespace gf {
 
   AudioCone AudioSource::cone() const
   {
-    AudioCone cone;
+    AudioCone cone = {};
     ma_sound_get_cone(m_source.get(), &cone.inner_angle, &cone.outer_angle, &cone.outer_gain);
     return cone;
   }
@@ -258,7 +258,7 @@ namespace gf {
 
   bool AudioSource::finished() const
   {
-    return ma_sound_at_end(m_source.get());
+    return ma_sound_at_end(m_source.get()) == MA_TRUE;
   }
 
   Time AudioSource::cursor()