162 lines
4.7 KiB
C++
162 lines
4.7 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "bagel/hodjnpodj/hnplibs/stdafx.h"
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#include "bagel/hodjnpodj/garfunkle/note.h"
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namespace Bagel {
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namespace HodjNPodj {
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namespace Garkfunkle {
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CNote *CNote::m_pNoteHead = nullptr; // pointer to list of linked notes
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CNote *CNote::m_pNoteTail = nullptr; // pointer to tail of list of linked notes
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IMPLEMENT_DYNCREATE(CNote, CObject)
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/*************************************************************************
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*
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* CNote()
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*
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* Parameters: none
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*
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* Return Value: none
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*
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* Description: Constructor for note class.
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*
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************************************************************************/
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CNote::CNote() {
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m_nValue = 1;
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m_pNext = nullptr; // it is not yet in the sprite chain and
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m_pPrev = nullptr; // ... thus has no links to other sprites
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}
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/*************************************************************************
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*
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* ~CNote()
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*
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* Parameters: none
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*
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* Return Value: none
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*
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* Description: Destructor for note class.
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*
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************************************************************************/
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CNote::~CNote() {
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}
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/*************************************************************************
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*
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* SetValue()
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*
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* Parameters:
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* int nValue value which identifies the button associated with the note
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*
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* Return Value: none
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*
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* Description: Identify the button to be played at this point in the sequence
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*
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************************************************************************/
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void CNote::SetValue(int nValue) {
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m_nValue = nValue; // identify the button to be played
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}
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/*************************************************************************
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*
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* LinkNote()
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*
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* Parameters: none
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*
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* Return Value: none
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*
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* Description: Link this note into the list by placing it at the
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* the tail of the list
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*
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************************************************************************/
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void CNote::LinkNote() {
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m_pNext = nullptr; // link note onto tail of list
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m_pPrev = m_pNoteTail; //... by pointing it back at the current
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//... tail, making it the tail, and
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if (m_pNoteTail) //... pointing it at nullptr (the list terminator)
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(*m_pNoteTail).m_pNext = this;
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else
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m_pNoteHead = this;
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m_pNoteTail = this;
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}
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/*************************************************************************
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*
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* UnLinkNote()
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*
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* Parameters: none
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*
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* Return Value: none
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*
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* Description: Remove this sprite from the sprite chain and point its
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* neighbors at each other to fill the gap
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*
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************************************************************************/
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void CNote::UnLinkNote() {
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if (m_pPrev) // disconnect us from the note chain
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(*m_pPrev).m_pNext = m_pNext; // ... by pointing the one before us, and
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else // ... the one after us, at each other
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m_pNoteHead = m_pNext; // special case the instances where the
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// ... note to be removed is the first
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if (m_pNext) // ... or the last in the list, update
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(*m_pNext).m_pPrev = m_pPrev; // ... the head of chain pointer
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else
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m_pNoteTail = m_pPrev;
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m_pNext = m_pPrev = nullptr;
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}
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/*************************************************************************
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*
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* FlushNoteList()
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*
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* Parameters: none
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*
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* Return Value: none
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*
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* Description: Remove all notes from the chain and delete them via
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* the standard destructor
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*
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************************************************************************/
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void CNote::FlushNoteList() {
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CNote *pNote;
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while ((pNote = CNote::GetNoteHead())) {
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(*pNote).UnLinkNote();
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delete pNote;
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}
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}
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} // namespace Garfunkle
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} // namespace HodjNPodj
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} // namespace Bagel
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