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a866a07974
SBSPSS/source/thing/thing.cpp
Paul a866a07974
2001-03-05 20:01:25 +00:00

519 lines
11 KiB
C++
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/*=========================================================================
thing.cpp
Author: PKG
Created:
Project: Spongebob
Purpose:
Copyright (c) 2001 Climax Development Ltd
===========================================================================*/
/*----------------------------------------------------------------------
Includes
-------- */
#include "thing\thing.h"
/* Std Lib
------- */
/* Data
---- */
/*----------------------------------------------------------------------
Tyepdefs && Defines
------------------- */
/*----------------------------------------------------------------------
Structure defintions
-------------------- */
/*----------------------------------------------------------------------
Function Prototypes
------------------- */
/*----------------------------------------------------------------------
Vars
---- */
CThing *CThingManager::s_thingLists[CThing::MAX_TYPE]={NULL,NULL};
int CThingManager::s_initialised=false;
/*----------------------------------------------------------------------
Function:
Purpose:
Params:
Returns:
---------------------------------------------------------------------- */
void CThingManager::init()
{
int i;
ASSERT(!s_initialised);
for(i=0;i<CThing::MAX_TYPE;i++)
{
s_thingLists[i]=NULL;
}
s_initialised=true;
}
/*----------------------------------------------------------------------
Function:
Purpose:
Params:
Returns:
---------------------------------------------------------------------- */
void CThingManager::shutdown()
{
int i;
CThing *thing;
ASSERT(s_initialised);
for(i=0;i<CThing::MAX_TYPE;i++)
{
while(s_thingLists[i])
{
thing=s_thingLists[i];
thing->shutdown();
delete thing;
}
}
s_initialised=false;
}
/*----------------------------------------------------------------------
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->canCollide()&&
thing1->checkCollisionAgainst(thing2))
{
thing1->collidedWith(thing2);
}
thing1=thing1->m_nextThing;
}
// Player -> Enemy collision
thing1=s_thingLists[CThing::TYPE_ENEMY];
thing2=s_thingLists[CThing::TYPE_PLAYER];
while(thing1&&thing2)
{
if(thing1->canCollide()&&
thing1->checkCollisionAgainst(thing2))
{
thing1->collidedWith(thing2);
}
thing1=thing1->m_nextThing;
}
// Player -> Enemy projectile collision
thing1=s_thingLists[CThing::TYPE_ENEMYPROJECTILE];
thing2=s_thingLists[CThing::TYPE_PLAYER];
while(thing1&&thing2)
{
if(thing1->canCollide()&&
thing1->checkCollisionAgainst(thing2))
{
thing1->collidedWith(thing2);
}
thing1=thing1->m_nextThing;
}
// Player -> Trigger collision
thing1=s_thingLists[CThing::TYPE_TRIGGER];
thing2=s_thingLists[CThing::TYPE_PLAYER];
while(thing1&&thing2)
{
if(thing1->canCollide()&&
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);
}
/*----------------------------------------------------------------------
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"
void CThing::render()
{
if(showthings)
{
DVECTOR ofs;
CRECT area;
ofs=CLevel::getCameraPos();
area=getCollisionArea();
area.x1-=ofs.vx;
area.y1-=ofs.vy;
area.x2-=ofs.vx;
area.y2-=ofs.vy;
if(area.x1<=511&&area.x2>=0&&
area.y1<=255&&area.y2>=0)
{
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);
area.x1=Pos.vx-10-ofs.vx;
area.y1=Pos.vy-10-ofs.vy;
area.x2=Pos.vx+10-ofs.vx;
area.y2=Pos.vy+10-ofs.vy;
DrawLine(area.x1,area.y1,area.x2,area.y2,255,0,0,0);
DrawLine(area.x2,area.y1,area.x1,area.y2,255,0,0,0);
}
}
}
#else
void CThing::render()
{
}
#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()
{
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)
{
CRECT thisRect,thatRect;
thisRect=getCollisionArea();
thatRect=_thisThing->getCollisionArea();
if(((thisRect.x1>=thatRect.x1&&thisRect.x1<=thatRect.x2)||(thisRect.x2>=thatRect.x1&&thisRect.x2<=thatRect.x2)||(thisRect.x1<=thatRect.x1&&thisRect.x2>=thatRect.x2))&&
((thisRect.y1>=thatRect.y1&&thisRect.y1<=thatRect.y2)||(thisRect.y2>=thatRect.y1&&thisRect.y2<=thatRect.y2)||(thisRect.y1<=thatRect.y1&&thisRect.y2>=thatRect.y2)))
{
collided=true;
}
}
return collided;
}
/*----------------------------------------------------------------------
Function:
Purpose:
Params:
Returns:
---------------------------------------------------------------------- */
void CThing::processEvent(GAME_EVENT _event,CThing *_sourceThing)
{
// do nothing by default - ignore event
}
/*===========================================================================
end */
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