source/platform/plinear.cpp

@@ -0,0 +1,97 @@
+/*=========================================================================
+
+	plinear.cpp
+
+	Author:		CRB
+	Created:
+	Project:	Spongebob
+	Purpose:
+
+	Copyright (c) 2001 Climax Development Ltd
+
+===========================================================================*/
+
+#ifndef __PLATFORM_PLINEAR_H__
+#include "platform\plinear.h"
+#endif
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+void CNpcLinearPlatform::postInit()
+{
+	m_npcPath.setPathType( CNpcPath::PONG_PATH );
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+void CNpcLinearPlatform::processMovement( int _frames )
+{
+	s32 moveX = 0, moveY = 0;
+	s32 moveDist = 0;
+
+	bool pathComplete;
+	bool waypointChange;
+
+	s16 headingToTarget = m_npcPath.think( Pos, &pathComplete, &waypointChange );
+
+	if ( !pathComplete )
+	{
+		s16 decDir, incDir;
+		s16 maxTurnRate = m_data[m_type].turnSpeed;
+
+		decDir = m_heading - headingToTarget;
+
+		if ( decDir < 0 )
+		{
+			decDir += ONE;
+		}
+
+		incDir = headingToTarget - m_heading;
+
+		if ( incDir < 0 )
+		{
+			incDir += ONE;
+		}
+
+		if ( decDir < incDir )
+		{
+			*moveDist = -decDir;
+		}
+		else
+		{
+			*moveDist = incDir;
+		}
+
+		if ( *moveDist < -maxTurnRate )
+		{
+			*moveDist = -maxTurnRate;
+		}
+		else if ( *moveDist > maxTurnRate )
+		{
+			*moveDist = maxTurnRate;
+		}
+
+		m_heading += *moveDist;
+		m_heading &= 4095;
+
+		s32 preShiftX = _frames * m_data[m_type].speed * rcos( m_heading );
+		s32 preShiftY = _frames * m_data[m_type].speed * rsin( m_heading );
+
+		*moveX = preShiftX >> 12;
+		if ( !(*moveX) && preShiftX )
+		{
+			*moveX = preShiftX / abs( preShiftX );
+		}
+
+		*moveY = preShiftY >> 12;
+		if ( !(*moveY) && preShiftY )
+		{
+			*moveY = preShiftY / abs( preShiftY );
+		}
+
+		//processGroundCollisionReverse( moveX, moveY );
+	}
+
+	Pos.vx += moveX;
+	Pos.vy += moveY;
+}

source/platform/plinear.h

@@ -0,0 +1,29 @@
+/*=========================================================================
+
+	plinear.h
+
+	Author:		CRB
+	Created: 
+	Project:	Spongebob
+	Purpose: 
+
+	Copyright (c) 2001 Climax Development Ltd
+
+===========================================================================*/
+
+#ifndef __PLATFORM_PLINEAR_H__
+#define __PLATFORM_PLINEAR_H__
+
+#ifndef __PLATFORM_PLATFORM_H__
+#include "platform\platform.h"
+#endif
+
+class CNpcLinearPlatform : public CNpcPlatform
+{
+public:
+	virtual void		postInit();
+protected:
+	void				processMovement( int _frames );
+};
+
+#endif