source/hazard/hdbarrel.cpp

@@ -0,0 +1,125 @@
+/*=========================================================================
+
+	hdbarrel.cpp
+
+	Author:		CRB
+	Created: 
+	Project:	Spongebob
+	Purpose: 
+
+	Copyright (c) 2001 Climax Development Ltd
+
+===========================================================================*/
+
+#ifndef __HAZARD_HDBARREL_H__
+#include "hazard\hdbarrel.h"
+#endif
+
+#ifndef __LAYER_COLLISION_H__
+#include "level\layercollision.h"
+#endif
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+void CNpcDualPlatformBarrelHazard::init()
+{
+	CNpcHazard::init();
+
+	m_npcPath.setPathType( CNpcPath::SINGLE_USE_PATH );
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+void CNpcDualPlatformBarrelHazard::processMovement( int _frames )
+{
+	s32 maxHeight = 20;
+	s32 distX, distY;
+	s32 fallSpeed = 3;
+	s8 yMovement = fallSpeed * _frames;
+	s32 groundHeight;
+
+	s32 moveX = 0;
+	s32 moveY = 0;
+
+	// ignore y component of waypoint, since we are stuck to the ground
+
+	bool pathComplete;
+
+	if ( m_npcPath.thinkFlat( Pos, &pathComplete, &distX, &distY, &m_heading ) )
+	{
+		if ( pathComplete )
+		{
+			// reset
+
+			Pos = m_base;
+			m_npcPath.resetPath();
+
+			return;
+		}
+		else
+		{
+			// check for vertical movement
+
+			groundHeight = m_layerCollision->getHeightFromGround( Pos.vx, Pos.vy, yMovement + 16 );
+
+			if ( groundHeight <= yMovement )
+			{
+				// groundHeight <= yMovement indicates either just above ground or on or below ground
+
+				moveY = groundHeight;
+			}
+			else
+			{
+				// fall
+
+				moveY = yMovement;
+			}
+		}
+	}
+	else
+	{
+		// check for collision
+
+		distX = distX / abs( distX );
+
+		if ( m_layerCollision->getHeightFromGround( Pos.vx + ( distX * 3 * _frames ), Pos.vy ) < -maxHeight )
+		{
+			// there is an obstacle in the way, increment the path point (hopefully this will resolve the problem)
+
+			m_npcPath.incPath();
+		}
+		else
+		{
+			// check for vertical movement
+
+			groundHeight = m_layerCollision->getHeightFromGround( Pos.vx, Pos.vy, yMovement + 16 );
+
+			if ( groundHeight <= yMovement )
+			{
+				// groundHeight <= yMovement indicates either just above ground or on or below ground
+
+				moveX = distX * 3 * _frames;
+				moveY = groundHeight;
+			}
+			else
+			{
+				// fall
+
+				moveY = yMovement;
+			}
+		}
+	}
+
+	Pos.vx += moveX;
+	Pos.vy += moveY;
+
+	s32 minY, maxY;
+
+	m_npcPath.getPathYExtents( &minY, &maxY );
+
+	if ( Pos.vy > maxY )
+	{
+		Pos = m_base;
+		m_npcPath.resetPath();
+	}
+}

source/hazard/hdbarrel.h

@@ -0,0 +1,29 @@
+/*=========================================================================
+
+	hdbarrel.h
+
+	Author:		CRB
+	Created: 
+	Project:	Spongebob
+	Purpose: 
+
+	Copyright (c) 2001 Climax Development Ltd
+
+===========================================================================*/
+
+#ifndef __HAZARD_HDBARREL_H__
+#define __HAZARD_HDBARREL_H__
+
+#ifndef __HAZARD_HAZARD_H__
+#include "hazard\hazard.h"
+#endif
+
+class CNpcDualPlatformBarrelHazard : public CNpcHazard
+{
+public:
+	void				init();
+protected:
+	void				processMovement( int _frames );
+};
+
+#endif