Added protected destructors.

include/osgParticle/ExplosionDebrisEffect

@@ -43,6 +43,8 @@ namespace osgParticle
 
     protected:
 
+        virtual ~ExplosionDebrisEffect() {}
+
         osg::ref_ptr<ModularEmitter> _emitter;
         osg::ref_ptr<FluidProgram> _program;
 

include/osgParticle/ExplosionEffect

@@ -43,6 +43,8 @@ namespace osgParticle
     
     protected:
 
+        virtual ~ExplosionEffect() {}
+
         osg::ref_ptr<ModularEmitter> _emitter;
         osg::ref_ptr<FluidProgram> _program;
 

include/osgParticle/FireEffect

@@ -42,6 +42,8 @@ namespace osgParticle
         virtual const Program* getProgram() const { return _program.get(); }
     
     protected:
+    
+        virtual ~FireEffect() {}
 
         osg::ref_ptr<ModularEmitter> _emitter;
         osg::ref_ptr<FluidProgram> _program;

include/osgParticle/ParticleEffect

@@ -92,6 +92,8 @@ namespace osgParticle
 
     protected:
     
+        virtual ~ParticleEffect() {}
+
         osg::ref_ptr<ParticleSystem>    _particleSystem;
 
         bool                            _useLocalParticleSystem;        

include/osgParticle/SmokeEffect

@@ -43,6 +43,8 @@ namespace osgParticle
     
     protected:
 
+        virtual ~SmokeEffect() {}
+        
         osg::ref_ptr<ModularEmitter> _emitter;
         osg::ref_ptr<FluidProgram> _program;
 

include/osgParticle/SmokeTrailEffect

@@ -43,6 +43,8 @@ namespace osgParticle
     
     protected:
 
+        virtual ~SmokeTrailEffect() {}
+        
         osg::ref_ptr<ModularEmitter> _emitter;
         osg::ref_ptr<FluidProgram> _program;