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diff --git a/include/IParticleGravityAffector.h b/include/IParticleGravityAffector.h
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+// Copyright (C) 2002-2012 Nikolaus Gebhardt
+// This file is part of the "Irrlicht Engine".
+// For conditions of distribution and use, see copyright notice in irrlicht.h
+
+#ifndef __I_PARTICLE_GRAVITY_AFFECTOR_H_INCLUDED__
+#define __I_PARTICLE_GRAVITY_AFFECTOR_H_INCLUDED__
+
+#include "IParticleAffector.h"
+
+namespace irr
+{
+namespace scene
+{
+
+//! A particle affector which applies gravity to particles.
+class IParticleGravityAffector : public IParticleAffector
+{
+public:
+
+	//! Set the time in milliseconds when the gravity force is totally lost
+	/** At that point the particle does not move any more. */
+	virtual void setTimeForceLost( f32 timeForceLost ) = 0;
+
+	//! Set the direction and force of gravity in all 3 dimensions.
+	virtual void setGravity( const core::vector3df& gravity ) = 0;
+
+	//! Get the time in milliseconds when the gravity force is totally lost
+	virtual f32 getTimeForceLost() const = 0;
+
+	//! Get the direction and force of gravity.
+	virtual const core::vector3df& getGravity() const = 0;
+
+	//! Get emitter type
+	virtual E_PARTICLE_AFFECTOR_TYPE getType() const { return EPAT_GRAVITY; }
+};
+
+} // end namespace scene
+} // end namespace irr
+
+
+#endif // __I_PARTICLE_GRAVITY_AFFECTOR_H_INCLUDED__
+