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SBSPSS/source/thing/thing.cpp
Paul 6c807b17f7
2001-04-27 19:57:12 +00:00

867 lines
19 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"
#ifndef __PLAYER_PLAYER_H__
#include "player\player.h"
#endif
#ifndef __GAME_GAME_H__
#include "game\game.h"
#endif
#ifndef __UTILS_HEADER__
#include "utils\utils.h"
#endif
/* 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;
}
}
CPlayer *player = GameScene.getPlayer();
if ( player )
{
player->clearPlatform();
}
// Player -> Platform collision
thing1=s_thingLists[CThing::TYPE_PLATFORM];
thing2=s_thingLists[CThing::TYPE_PLAYER];
thing2->setHasPlatformCollided( false );
thing2->setNewCollidedPos( thing2->getPos() );
while(thing1&&thing2)
{
if(thing1->canCollide()&&
thing1->checkCollisionAgainst(thing2, _frames))
{
thing1->collidedWith(thing2);
}
thing1=thing1->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, _frames))
{
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, _frames))
{
thing1->collidedWith(thing2);
}
thing1=thing1->m_nextThing;
}
// Player -> Hazard collision
thing1=s_thingLists[CThing::TYPE_HAZARD];
thing2=s_thingLists[CThing::TYPE_PLAYER];
while(thing1&&thing2)
{
if(thing1->canCollide()&&
thing1->checkCollisionAgainst(thing2, _frames))
{
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, _frames))
{
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, _frames))
{
thing1->collidedWith(thing2);
}
thing1=thing1->m_nextThing;
}
// Enemy -> Player projectile collision
thing1=s_thingLists[CThing::TYPE_PLAYERPROJECTILE];
thing2=s_thingLists[CThing::TYPE_ENEMY];
while(thing1)
{
while(thing2)
{
if(thing1->canCollide()&&
thing2->canCollide()&&
thing1->checkCollisionAgainst(thing2, _frames))
{
thing1->collidedWith(thing2);
}
thing2=thing2->m_nextThing;
}
thing1=thing1->m_nextThing;
}
// Enemy -> Enemy collision
thing1=s_thingLists[CThing::TYPE_ENEMY];
while(thing1)
{
thing2=s_thingLists[CThing::TYPE_ENEMY];
while(thing2)
{
if ( thing1 != thing2 )
{
if ( thing1->canCollide() &&
thing2->canCollide() &&
thing1->checkCollisionAgainst( thing2, _frames ) )
{
thing1->collidedWith( thing2 );
//thing2->collidedWith( thing1 );
}
}
thing2 = thing2->m_nextThing;
}
thing1 = thing1->m_nextThing;
}
for(i=0;i<CThing::MAX_TYPE;i++)
{
thing=s_thingLists[i];
CThing *nextThing = thing;
while(thing)
{
nextThing=thing->m_nextThing;
if ( thing->isSetToShutdown() )
{
thing->shutdown();
delete thing;
}
thing = 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: Searches through a list of things to check for collision against an area.
The first time this is called, _continue should be false. If no colliding things are found then
NULL will be returned. If a colliding thing is found then it's address gets returned. To continue
searching through the list for the next colliding thing, call the function again with _continue set
to true.
NB: This function could probly cause weird bugs if not used properly! BE AWARE!
Params: *_area Area to check against
_type Type of thing to search for
_continue If false then the list is searched from the start, if true then the search continues
from the last thing that was found ( um.. see above )
Returns:
---------------------------------------------------------------------- */
CThing *CThingManager::checkCollisionAreaAgainstThings(CRECT *_area,int _type,int _continue)
{
static CThing *thing=NULL;
ASSERT(_type<CThing::MAX_TYPE);
if(_continue)
{
ASSERT(thing);
thing=thing->m_nextThing;
}
else
{
thing=s_thingLists[_type];
}
while(thing)
{
if(thing->canCollide()&&
thing->checkCollisionAgainstArea(_area))
{
return thing;
}
thing=thing->m_nextThing;
}
return NULL;
}
/*----------------------------------------------------------------------
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;
m_numChildren = 0;
Pos.vx=Pos.vy=10;
// Add to thing list
CThingManager::addToThingList(this);
setCollisionSize(20,20); // Some temporary defaults.. (pkg)
setCollisionCentreOffset(0,0);
setCollisionAngle(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)
{
PosDelta.vx=Pos.vx-PosLast.vx;
PosDelta.vy=Pos.vy-PosLast.vy;
PosLast=Pos;
}
/*----------------------------------------------------------------------
Function:
Purpose:
Params:
Returns:
---------------------------------------------------------------------- */
#if defined (__USER_paul__) || defined (__USER_charles__)
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.x2,area.y1,255,255,255,0);
DrawLine(area.x2,area.y1,area.x2,area.y2,255,255,255,0);
DrawLine(area.x2,area.y2,area.x1,area.y2,255,255,255,0);
DrawLine(area.x1,area.y2,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);
}
/*
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)
{
area=getCollisionArea();
SVECTOR points[4];
VECTOR vecPoints[4];
points[0].vx = area.x1 - Pos.vx;
points[0].vy = area.y1 - Pos.vy;
points[1].vx = area.x1 - Pos.vx;
points[1].vy = area.y2 - Pos.vy;
points[2].vx = area.x2 - Pos.vx;
points[2].vy = area.y2 - Pos.vy;
points[3].vx = area.x2 - Pos.vx;
points[3].vy = area.y1 - Pos.vy;
MATRIX mtx;
SetIdentNoTrans(&mtx );
RotMatrixZ( m_collisionAngle, &mtx );
ApplyMatrix( &mtx, &points[0], &vecPoints[0] );
ApplyMatrix( &mtx, &points[1], &vecPoints[1] );
ApplyMatrix( &mtx, &points[2], &vecPoints[2] );
ApplyMatrix( &mtx, &points[3], &vecPoints[3] );
vecPoints[0].vx += Pos.vx - ofs.vx;
vecPoints[0].vy += Pos.vy - ofs.vy;
vecPoints[1].vx += Pos.vx - ofs.vx;
vecPoints[1].vy += Pos.vy - ofs.vy;
vecPoints[2].vx += Pos.vx - ofs.vx;
vecPoints[2].vy += Pos.vy - ofs.vy;
vecPoints[3].vx += Pos.vx - ofs.vx;
vecPoints[3].vy += Pos.vy - 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);
DrawLine( vecPoints[0].vx, vecPoints[0].vy, vecPoints[1].vx, vecPoints[1].vy,255,255,255,0);
DrawLine( vecPoints[1].vx, vecPoints[1].vy, vecPoints[2].vx, vecPoints[2].vy,255,255,255,0);
DrawLine( vecPoints[2].vx, vecPoints[2].vy, vecPoints[3].vx, vecPoints[3].vy,255,255,255,0);
DrawLine( vecPoints[3].vx, vecPoints[3].vy, vecPoints[0].vx, vecPoints[0].vy,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;
m_numChildren++;
}
else
{
// List does not exist, create
Next = Child;
Child->Parent=this;
m_numChildren++;
}
}
/*----------------------------------------------------------------------
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;
}
m_numChildren--;
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;
m_numChildren = 0;
}
/*----------------------------------------------------------------------
Function:
Purpose:
Params:
Returns:
---------------------------------------------------------------------- */
void CThing::deleteAllChild()
{
CThing *List=Next;
while (List)
{
CThing *Next=List->Next;
List->Parent=NULL;
List->Next=NULL;
List->shutdown();
delete List;
List=Next;
}
Next=NULL;
m_numChildren = 0;
}
/*----------------------------------------------------------------------
Function:
Purpose:
Params:
Returns:
---------------------------------------------------------------------- */
int CThing::getNumChildren()
{
return( m_numChildren );
}
/*----------------------------------------------------------------------
Function:
Purpose:
Params:
Returns:
---------------------------------------------------------------------- */
bool CThing::hasChild(CThing *Child)
{
CThing *nextChild = Next;
while( nextChild )
{
if ( nextChild == Child )
{
return( true );
}
nextChild = nextChild->Next;
}
return( false );
}
/*----------------------------------------------------------------------
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:
---------------------------------------------------------------------- */
s32 CThing::getNewYPos(CThing *_thisThing)
{
CRECT thisRect;
thisRect = getCollisionArea();
if ( thisRect.y1 < thisRect.y2 )
{
return( thisRect.y1 );
}
else
{
return( thisRect.y2 );
}
}
/*----------------------------------------------------------------------
Function:
Purpose:
Params:
Returns:
---------------------------------------------------------------------- */
int CThing::checkCollisionAgainst(CThing *_thisThing, int _frames)
{
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:
---------------------------------------------------------------------- */
int CThing::checkCollisionAgainstArea(CRECT *_rect)
{
CRECT thisRect;
int ret;
thisRect=getCollisionArea();
ret=false;
if(((thisRect.x1>=_rect->x1&&thisRect.x1<=_rect->x2)||(thisRect.x2>=_rect->x1&&thisRect.x2<=_rect->x2)||(thisRect.x1<=_rect->x1&&thisRect.x2>=_rect->x2))&&
((thisRect.y1>=_rect->y1&&thisRect.y1<=_rect->y2)||(thisRect.y2>=_rect->y1&&thisRect.y2<=_rect->y2)||(thisRect.y1<=_rect->y1&&thisRect.y2>=_rect->y2)))
{
ret=true;
}
return ret;
}
/*----------------------------------------------------------------------
Function:
Purpose:
Params:
Returns:
---------------------------------------------------------------------- */
void CThing::processEvent(GAME_EVENT _event,CThing *_sourceThing)
{
// do nothing by default - ignore event
}
/*----------------------------------------------------------------------
Function:
Purpose:
Params:
Returns:
---------------------------------------------------------------------- */
void CTriggerThing::setPositionAndSize(int _x,int _y,int _w,int _h)
{
Pos.vx=_x+(_w/2);
Pos.vy=_y+(_h/2);
setCollisionSize(_w,_h);
}
/*===========================================================================
end */
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