Added the beginings of new osgParticle Explosion, Fire and SmokeEffects.

Added support for generation explosion, fire and smoke effects in osgsimulation

include/osgParticle/ExplosionEffect

@@ -0,0 +1,41 @@
+/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield 
+ *
+ * This library is open source and may be redistributed and/or modified under  
+ * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
+ * (at your option) any later version.  The full license is in LICENSE file
+ * included with this distribution, and on the openscenegraph.org website.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
+ * OpenSceneGraph Public License for more details.
+*/
+
+#ifndef OSGPARTICLE_EXPLOSIONEFFECT
+#define OSGPARTICLE_EXPLOSIONEFFECT
+
+#include <osgParticle/ParticleEffect>
+
+namespace osgParticle
+{
+
+    class OSGPARTICLE_EXPORT ExplosionEffect : public ParticleEffect
+    {
+    public:
+    
+        ExplosionEffect();
+        
+        ExplosionEffect(const ExplosionEffect& copy, const osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY);
+
+        META_Node(osgParticle,ExplosionEffect);
+        
+        virtual void setDefaults();
+    
+        virtual void buildEffect();
+
+    protected:
+
+    };
+}
+
+#endif