133 lines
4.0 KiB
C++
133 lines
4.0 KiB
C++
/* ScummVM - Graphic Adventure Engine
|
|
*
|
|
* ScummVM is the legal property of its developers, whose names
|
|
* are too numerous to list here. Please refer to the COPYRIGHT
|
|
* file distributed with this source distribution.
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
#include "bagel/hodjnpodj/hnplibs/stdafx.h"
|
|
#include "bagel/hodjnpodj/barbershop/stack.h"
|
|
|
|
namespace Bagel {
|
|
namespace HodjNPodj {
|
|
namespace Barbershop {
|
|
|
|
CStack::CStack(CRect cRect, int nID) {
|
|
m_pTopCard = nullptr;
|
|
m_pBottomCard = nullptr;
|
|
m_nID = nID;
|
|
m_nSize = 0;
|
|
m_cRect = cRect;
|
|
}
|
|
|
|
CStack::~CStack() {
|
|
}
|
|
|
|
void CStack::Reset() {
|
|
m_pTopCard = nullptr;
|
|
m_pBottomCard = nullptr;
|
|
m_nSize = 0;
|
|
}
|
|
|
|
void CStack::Push(CCard *pCard) {
|
|
if (pCard == nullptr)
|
|
return;
|
|
|
|
/*********************************************************
|
|
* Update card pointers aligning them with current stack. *
|
|
*********************************************************/
|
|
pCard->m_pPrevCard = m_pTopCard; // link new top prev to old top card
|
|
pCard->m_pNextCard = nullptr; // new top next card now does not point anywhere
|
|
|
|
pCard->m_pStack = this; // reassign proper stack location
|
|
|
|
/*************************
|
|
* Update stack pointers. *
|
|
*************************/
|
|
if (m_pTopCard != nullptr)
|
|
m_pTopCard->m_pNextCard = pCard; // create forward chain for next card
|
|
|
|
m_pTopCard = pCard; // link old top card to new top
|
|
|
|
if (m_pBottomCard == nullptr)
|
|
m_pBottomCard = pCard;
|
|
|
|
m_nSize++;
|
|
}
|
|
|
|
CCard *CStack::Pop() {
|
|
CCard *pReturnCard;
|
|
|
|
/**************************************************
|
|
* Undo any links of current card to other stacks. *
|
|
**************************************************/
|
|
pReturnCard = m_pTopCard;
|
|
|
|
if (m_pTopCard == nullptr) {
|
|
m_nSize = 0;
|
|
return nullptr;
|
|
}
|
|
|
|
if (m_pTopCard->m_pPrevCard != nullptr) {
|
|
m_pTopCard->m_pPrevCard->m_pNextCard = nullptr;
|
|
m_pTopCard = m_pTopCard->m_pPrevCard;
|
|
|
|
if (m_pTopCard->m_pNextCard != nullptr)
|
|
m_pTopCard->m_pNextCard->m_pPrevCard = m_pTopCard->m_pPrevCard; // make cur prev card point to prev of prev card :^) (if any)
|
|
|
|
m_nSize--;
|
|
} else {
|
|
m_pTopCard = nullptr;
|
|
m_pBottomCard = nullptr;
|
|
m_nSize = 0;
|
|
}
|
|
|
|
return pReturnCard;
|
|
}
|
|
|
|
void CStack::Unlink(CCard *pCard) {
|
|
/**************************************************
|
|
* Undo any links of current card to other stacks. *
|
|
**************************************************/
|
|
if (pCard->m_pNextCard != nullptr) {
|
|
pCard->m_pNextCard->m_pPrevCard = pCard->m_pPrevCard; // make cur prev card point to prev of prev card :^) (if any)
|
|
pCard->m_pNextCard = nullptr;
|
|
}
|
|
|
|
if (pCard->m_pPrevCard != nullptr) {
|
|
pCard->m_pPrevCard->m_pNextCard = pCard->m_pNextCard; // make cur of prev of next pointer point to next of the next (if any)
|
|
this->m_pTopCard = pCard->m_pPrevCard; // Top of stack points to the prev card
|
|
pCard->m_pPrevCard = nullptr; // clear the card "prev card" pointer
|
|
} else {
|
|
m_pTopCard = nullptr;
|
|
m_pBottomCard = nullptr;
|
|
}
|
|
|
|
/**************************************************
|
|
* Card's stack pointer should not point anywhere. *
|
|
**************************************************/
|
|
pCard->m_pStack = nullptr; // clear card "stack" pointer
|
|
}
|
|
|
|
int CStack::Size() {
|
|
return m_nSize;
|
|
}
|
|
|
|
} // namespace Barbershop
|
|
} // namespace HodjNPodj
|
|
} // namespace Bagel
|