source/thing/thing.cpp

@@ -0,0 +1,488 @@
+/*=========================================================================
+
+	thing.cpp
+
+	Author:		PKG
+	Created: 
+	Project:	Spongebob
+	Purpose: 
+
+	Copyright (c) 2001 Climax Development Ltd
+
+===========================================================================*/
+
+/*----------------------------------------------------------------------
+	Includes
+	-------- */
+
+#include "thing\thing.h"
+
+#ifndef	__THING_TPICKUP_H__
+#include "thing\tpickup.h"
+#endif
+
+
+/*	Std Lib
+	------- */
+
+/*	Data
+	---- */
+
+/*----------------------------------------------------------------------
+	Tyepdefs && Defines
+	------------------- */
+
+/*----------------------------------------------------------------------
+	Structure defintions
+	-------------------- */
+
+/*----------------------------------------------------------------------
+	Function Prototypes
+	------------------- */
+
+/*----------------------------------------------------------------------
+	Vars
+	---- */
+
+CThing			*CThingManager::s_thingLists[CThing::MAX_TYPE]={NULL,NULL};
+
+
+/*----------------------------------------------------------------------
+	Function:
+	Purpose:
+	Params:
+	Returns:
+  ---------------------------------------------------------------------- */
+void		CThingManager::init()
+{
+	int		i;
+
+	for(i=0;i<CThing::MAX_TYPE;i++)
+	{
+		s_thingLists[i]=NULL;
+	}
+}
+
+/*----------------------------------------------------------------------
+	Function:
+	Purpose:
+	Params:
+	Returns:
+  ---------------------------------------------------------------------- */
+void		CThingManager::shutdown()
+{
+	int		i;
+	CThing	*thing;
+
+	for(i=0;i<CThing::MAX_TYPE;i++)
+	{
+		while(s_thingLists[i])
+		{
+			thing=s_thingLists[i];
+			thing->shutdown();
+			delete thing;
+		}
+	}
+}
+
+/*----------------------------------------------------------------------
+	Function:
+	Purpose:
+	Params:
+	Returns:
+  ---------------------------------------------------------------------- */
+void		CThingManager::thinkAllThings(int _frames)
+{
+	int		i;
+	CThing	*thing;
+	CThing	*thing1,*thing2;
+
+	for(i=0;i<CThing::MAX_TYPE;i++)
+	{
+		thing=s_thingLists[i];
+		while(thing)
+		{
+			thing->think(_frames);
+			thing->updateCollisionArea();
+			thing=thing->m_nextThing;
+		}
+	}
+
+	// Player -> Pickup collision
+	thing1=s_thingLists[CThing::TYPE_PICKUP];
+	thing2=s_thingLists[CThing::TYPE_PLAYER];
+	while(thing1&&thing2)
+	{
+		if(thing1->checkCollisionAgainst(thing2))
+		{
+			thing1->collidedWith(thing2);
+		}
+		thing1=thing1->m_nextThing;
+	}
+}
+
+/*----------------------------------------------------------------------
+	Function:
+	Purpose:
+	Params:
+	Returns:
+  ---------------------------------------------------------------------- */
+void		CThingManager::renderAllThings()
+{
+	int		i;
+	CThing	*thing;
+
+	for(i=0;i<CThing::MAX_TYPE;i++)
+	{
+		thing=s_thingLists[i];
+		while(thing)
+		{
+			thing->render();
+			thing=thing->m_nextThing;
+		}
+	}
+}
+
+/*----------------------------------------------------------------------
+	Function:
+	Purpose:
+	Params:
+	Returns:
+  ---------------------------------------------------------------------- */
+void		CThingManager::processEventAllThings(GAME_EVENT _event,CThing *_sourceThing)
+{
+	int		i;
+	CThing	*thing;
+
+	for(i=0;i<CThing::MAX_TYPE;i++)
+	{
+		thing=s_thingLists[i];
+		while(thing)
+		{
+			thing->processEvent(_event,_sourceThing);
+			thing=thing->m_nextThing;
+		}
+	}
+}
+
+/*----------------------------------------------------------------------
+	Function:
+	Purpose:
+	Params:
+	Returns:
+  ---------------------------------------------------------------------- */
+void			CThingManager::addToThingList(CThing *_this)
+{
+	_this->m_nextThing=s_thingLists[_this->getThingType()];
+	s_thingLists[_this->getThingType()]=_this;
+}
+
+/*----------------------------------------------------------------------
+	Function:
+	Purpose:
+	Params:
+	Returns:
+  ---------------------------------------------------------------------- */
+void			CThingManager::removeFromThingList(CThing *_this)
+{
+	CThing	*prevThing,*thing;
+
+	prevThing=NULL;
+	thing=s_thingLists[_this->getThingType()];
+	while(thing!=_this)
+	{
+		prevThing=thing;
+		thing=thing->m_nextThing;
+		ASSERT(thing);	// Not in the list!?!?
+	}
+	if(prevThing)
+	{
+		prevThing->m_nextThing=_this->m_nextThing;
+	}
+	else
+	{
+		s_thingLists[_this->getThingType()]=_this->m_nextThing;
+	}
+}
+
+/*----------------------------------------------------------------------
+	Function:
+	Purpose:
+	Params:
+	Returns:
+  ---------------------------------------------------------------------- */
+void	CThing::init()
+{
+	Parent=NULL;
+	Next=NULL;
+
+	Pos.vx=Pos.vy=10;
+
+	// Add to thing list
+	CThingManager::addToThingList(this);
+
+	
+	setCollisionSize(20,20);	// Some temporary defaults.. (pkg)
+	setCollisionCentreOffset(0,0);
+m_collisionCentreOffset.vx=m_collisionCentreOffset.vy=0;
+}
+
+/*----------------------------------------------------------------------
+	Function:
+	Purpose:
+	Params:
+	Returns:
+  ---------------------------------------------------------------------- */
+void	CThing::shutdown()
+{
+	if (Parent) 
+	{ // Is child
+		Parent->removeChild(this);
+	}
+	else
+	{ // Is Parent
+		removeAllChild();
+	}
+
+	// Remove from thing list
+	CThingManager::removeFromThingList(this);
+}
+
+/*----------------------------------------------------------------------
+	Function:
+	Purpose:
+	Params:
+	Returns:
+  ---------------------------------------------------------------------- */
+void	CThing::think(int _frames)
+{
+	DVECTOR	PosLast=Pos; 
+	PosDelta.vx=Pos.vx-PosLast.vx; 
+	PosDelta.vy=Pos.vy-PosLast.vy;
+}
+
+/*----------------------------------------------------------------------
+	Function:
+	Purpose:
+	Params:
+	Returns:
+  ---------------------------------------------------------------------- */
+#ifdef __USER_paul__
+int showthings=true;
+#include "gfx\prim.h"
+#include "level\level.h"
+#endif
+void	CThing::render()
+{
+#ifdef __USER_paul__
+	if(showthings)
+	{
+		DVECTOR	ofs;
+		CRECT	area;
+		int		x1,y1,x2,y2;
+
+		ofs=CLevel::getCameraPos();
+
+		area=getCollisionArea();
+		area.x1-=ofs.vx;
+		area.y1-=ofs.vy;
+		area.x2-=ofs.vx;
+		area.y2-=ofs.vy;
+		DrawLine(area.x1,area.y1,area.x1,area.y2,255,255,255,0);
+		DrawLine(area.x1,area.y2,area.x2,area.y2,255,255,255,0);
+		DrawLine(area.x2,area.y2,area.x2,area.y1,255,255,255,0);
+		DrawLine(area.x2,area.y1,area.x1,area.y1,255,255,255,0);
+
+		x1=Pos.vx-10-ofs.vx;
+		y1=Pos.vy-10-ofs.vy;
+		x2=Pos.vx+10-ofs.vx;
+		y2=Pos.vy+10-ofs.vy;
+		DrawLine(x1,y1,x2,y2,255,0,0,0);
+		DrawLine(x2,y1,x1,y2,255,0,0,0);
+	
+	}
+#endif
+}
+
+/*----------------------------------------------------------------------
+	Function:
+	Purpose:
+	Params:
+	Returns:
+  ---------------------------------------------------------------------- */
+void	CThing::addChild(CThing *Child)
+{
+CThing	*List=Next;
+
+	if ( List )
+	{
+// Find end of list
+		while (List->Next) 
+		{
+			List=List->Next;
+		}
+		List->Next=Child;
+		Child->Parent=this;
+	}
+	else
+	{
+// List does not exist, create
+		Next = Child;
+		Child->Parent=this;
+	}
+}
+
+/*----------------------------------------------------------------------
+	Function:
+	Purpose:
+	Params:
+	Returns:
+  ---------------------------------------------------------------------- */
+void	CThing::removeChild(CThing *Child)
+{
+CThing	*List=Next;
+CThing	*Last=NULL;
+
+// Find Child
+		while ( List != Child && List->Next )
+		{
+			Last = List;
+			List = List->Next;
+		}
+
+// if there are no more links to continue down, the current 'List' must either be the correct item, or the item does not
+// exist in the list at all
+
+		ASSERT( List == Child );
+
+		if ( Last )
+		{
+			Last->Next = List->Next;
+		}
+		else
+		{
+			this->Next = List->Next;
+		}
+
+		Child->Parent=NULL;
+}
+
+/*----------------------------------------------------------------------
+	Function:
+	Purpose:
+	Params:
+	Returns:
+  ---------------------------------------------------------------------- */
+void	CThing::removeAllChild()
+{
+CThing	*List=Next;
+
+		while (List)
+		{
+			CThing	*Next=List->Next;
+			List->Parent=NULL;
+			List->Next=NULL;
+			List=Next;
+		}
+		Next=NULL;
+}
+
+/*----------------------------------------------------------------------
+	Function:
+	Purpose:
+	Params:
+	Returns:
+  ---------------------------------------------------------------------- */
+void	CThing::setCollisionSize(int _w,int _h)
+{
+	m_collisionSize.vx=_w;
+	m_collisionSize.vy=_h;
+	if(m_collisionSize.vx>m_collisionSize.vy)
+	{
+		m_collisionRadius=m_collisionSize.vx;
+	}
+	else
+	{
+		m_collisionRadius=m_collisionSize.vy;
+	}
+}
+
+/*----------------------------------------------------------------------
+	Function:
+	Purpose:
+	Params:
+	Returns:
+  ---------------------------------------------------------------------- */
+void	CThing::updateCollisionArea()
+{
+	DVECTOR	size;
+
+	m_collisionCentre.vx=Pos.vx+m_collisionCentreOffset.vx;
+	m_collisionCentre.vy=Pos.vy+m_collisionCentreOffset.vy;
+	m_collisionArea.x1=m_collisionCentre.vx-(m_collisionSize.vx/2);
+	m_collisionArea.x2=m_collisionArea.x1+m_collisionSize.vx;
+	m_collisionArea.y1=m_collisionCentre.vy-(m_collisionSize.vy/2);
+	m_collisionArea.y2=m_collisionArea.y1+m_collisionSize.vy;
+}
+
+/*----------------------------------------------------------------------
+	Function:
+	Purpose:
+	Params:
+	Returns:
+  ---------------------------------------------------------------------- */
+int		CThing::checkCollisionAgainst(CThing *_thisThing)
+{
+	DVECTOR	pos,thisThingPos;
+	int		radius;
+	int		collided;
+
+	pos=getCollisionCentre();
+	thisThingPos=_thisThing->getCollisionCentre();
+
+	radius=getCollisionRadius()+_thisThing->getCollisionRadius();
+	collided=false;
+	if(abs(pos.vx-thisThingPos.vx)<radius&&
+	   abs(pos.vy-thisThingPos.vy)<radius)
+	{
+		DVECTOR	pos,size;
+		CRECT	thisRect,thatRect;
+
+		thisRect=getCollisionArea();
+		thatRect=_thisThing->getCollisionArea();
+
+//static int val=0;
+		if(((thisRect.x1>=thatRect.x1&&thisRect.x1<=thatRect.x2)||(thisRect.x2>=thatRect.x1&&thisRect.x2<=thatRect.x2))&&
+		   ((thisRect.y1>=thatRect.y1&&thisRect.y1<=thatRect.y2)||(thisRect.y2>=thatRect.y1&&thisRect.y2<=thatRect.y2)))
+		{
+//PAUL_DBGMSG("hit %d",val++);
+			collided=true;
+		}
+		else
+		{
+//PAUL_DBGMSG("close %d",val++);
+		}
+	}
+	else
+	{
+//PAUL_DBGMSG("%03d %03d  ( %d%d )",
+//			abs(Pos.vx-thisThingPos.vx),abs(Pos.vy-thisThingPos.vy),
+//			abs(Pos.vx-thisThingPos.vx)<radius,abs(Pos.vy-thisThingPos.vy)<radius);
+	}
+
+	return collided;
+}
+
+/*----------------------------------------------------------------------
+	Function:
+	Purpose:
+	Params:
+	Returns:
+  ---------------------------------------------------------------------- */
+void	CThing::processEvent(GAME_EVENT _event,CThing *_sourceThing)
+{
+	// do nothing by default - ignore event
+}
+
+/*===========================================================================
+end */