diff --git a/source/platform/pdual.cpp b/source/platform/pdual.cpp
new file mode 100644
index 000000000..db8d6f659
--- /dev/null
+++ b/source/platform/pdual.cpp
@@ -0,0 +1,134 @@
+/*=========================================================================
+
+	pdual.cpp
+
+	Author:		CRB
+	Created: 
+	Project:	Spongebob
+	Purpose: 
+
+	Copyright (c) 2001 Climax Development Ltd
+
+===========================================================================*/
+
+#ifndef __PLATFORM_PDUAL_H__
+#include "platform\pdual.h"
+#endif
+
+#ifndef	__UTILS_HEADER__
+#include	"utils\utils.h"
+#endif
+
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+void CNpcDualPlatform::setMaster( u8 isMaster )
+{
+	m_isMaster = isMaster;
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+void CNpcDualPlatform::setOtherPlatform( CNpcDualPlatform *other )
+{
+	m_otherPlatform = other;
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+void CNpcDualPlatform::setWaypoints( sThingPlatform *ThisPlatform )
+{
+	ASSERT( ThisPlatform->PointCount == 3 );
+
+	u16	*PntList=(u16*)MakePtr(ThisPlatform,sizeof(sThingPlatform));
+
+	u16 newXPos, newYPos;
+
+	// get master platform init pos
+
+	newXPos = (u16) *PntList;
+	PntList++;
+	newYPos = (u16) *PntList;
+	PntList++;
+
+	DVECTOR startPos;
+	startPos.vx = newXPos << 4;
+	startPos.vy = newYPos << 4;
+
+	init( startPos );
+
+	m_extension = 0;
+
+	// get master platform max vertical extension
+
+	newXPos = (u16) *PntList;
+	PntList++;
+	newYPos = (u16) *PntList;
+	PntList++;
+
+	m_maxExtension = ( newYPos << 4 ) - startPos.vy;
+
+	ASSERT( m_maxExtension >= 0 );
+
+	// get slave platform init x pos
+
+	newXPos = (u16) *PntList;
+
+	DVECTOR slavePos;
+	slavePos.vx = newXPos << 4;
+	slavePos.vy = startPos.vy + m_maxExtension;
+
+	m_otherPlatform->init( slavePos );
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+void CNpcDualPlatform::processMovement( int _frames )
+{
+	if ( m_isMaster )
+	{
+		s32 extensionChange = 0;
+		s32 extensionLeft;
+
+		if ( m_contact )
+		{
+			extensionLeft = m_maxExtension - m_extension;
+
+			extensionChange = 3 * _frames;
+
+			if ( extensionChange > extensionLeft )
+			{
+				extensionChange = extensionLeft;
+			}
+		}
+		else
+		{
+			extensionLeft = m_extension;
+
+			extensionChange = -3 * _frames;
+
+			if ( -extensionChange > extensionLeft )
+			{
+				extensionChange = -extensionLeft;
+			}
+		}
+
+		m_extension += extensionChange;
+
+		Pos.vy = m_base.vy + m_extension;
+
+		DVECTOR slaveMove;
+		slaveMove.vx = 0;
+		slaveMove.vy = -extensionChange;
+
+		m_otherPlatform->setMovement( slaveMove );
+	}
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+void CNpcDualPlatform::setMovement( DVECTOR move )
+{
+	Pos.vx += move.vx;
+	Pos.vy += move.vy;
+}
diff --git a/source/platform/pdual.h b/source/platform/pdual.h
new file mode 100644
index 000000000..1e90c8d51
--- /dev/null
+++ b/source/platform/pdual.h
@@ -0,0 +1,37 @@
+/*=========================================================================
+
+	pdual.h
+
+	Author:		CRB
+	Created: 
+	Project:	Spongebob
+	Purpose: 
+
+	Copyright (c) 2001 Climax Development Ltd
+
+===========================================================================*/
+
+#ifndef __PLATFORM_PDUAL_H__
+#define __PLATFORM_PDUAL_H__
+
+#ifndef __PLATFORM_PLATFORM_H__
+#include "platform\platform.h"
+#endif
+
+class CNpcDualPlatform : public CNpcPlatform
+{
+public:
+	void				setMaster( u8 isMaster );
+	void				setOtherPlatform( CNpcDualPlatform *other );
+	void				setMovement( DVECTOR move );
+protected:
+	virtual void		setWaypoints( sThingPlatform *ThisPlatform );
+	virtual void		processMovement( int _frames );
+
+	u8					m_isMaster;
+	CNpcDualPlatform	*m_otherPlatform;
+	s32					m_maxExtension;
+	s32					m_extension;
+};
+
+#endif
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