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engines/bagel/hodjnpodj/barbershop/undo.cpp

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+/* 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/undo.h"
+
+namespace Bagel {
+namespace HodjNPodj {
+namespace Barbershop {
+
+/*****************************************************************
+ *
+ * [function name]
+ *
+ * FUNCTIONAL DESCRIPTION:
+ *
+ *      [Description of function]
+ *
+ * FORMAL PARAMETERS:
+ *
+ *      [Show arguments]
+ *
+ * IMPLICIT INPUT PARAMETERS:
+ *
+ *      [External data read]
+ *
+ * IMPLICIT OUTPUT PARAMETERS:
+ *
+ *      [External data modified]
+ *
+ * RETURN VALUE:
+ *
+ *      [Discuss return value]
+ *
+ ****************************************************************/
+CUndo::CUndo() {
+	m_cUndoRect = CRect(
+	                  UNDO_LEF,
+	                  UNDO_TOP,
+	                  UNDO_RIG,
+	                  UNDO_BOT
+	              );
+	m_pStack    = nullptr;
+	m_pCard     = nullptr;
+	m_nStock    = NONE;
+}
+
+/*****************************************************************
+ *
+ * [function name]
+ *
+ * FUNCTIONAL DESCRIPTION:
+ *
+ *      [Description of function]
+ *
+ * FORMAL PARAMETERS:
+ *
+ *      [Show arguments]
+ *
+ * IMPLICIT INPUT PARAMETERS:
+ *
+ *      [External data read]
+ *
+ * IMPLICIT OUTPUT PARAMETERS:
+ *
+ *      [External data modified]
+ *
+ * RETURN VALUE:
+ *
+ *      [Discuss return value]
+ *
+ ****************************************************************/
+CUndo::~CUndo() {
+}
+
+/*****************************************************************
+ *
+ * [function name]
+ *
+ * FUNCTIONAL DESCRIPTION:
+ *
+ *      [Description of function]
+ *
+ * FORMAL PARAMETERS:
+ *
+ *      [Show arguments]
+ *
+ * IMPLICIT INPUT PARAMETERS:
+ *
+ *      [External data read]
+ *
+ * IMPLICIT OUTPUT PARAMETERS:
+ *
+ *      [External data modified]
+ *
+ * RETURN VALUE:
+ *
+ *      [Discuss return value]
+ *
+ ****************************************************************/
+void CUndo::Record(CStack *pStack, CCard *pCard) {
+	m_pStack    = pStack;
+	m_pCard     = pCard;
+	m_nStock    = NONE;
+}
+
+/*****************************************************************
+ *
+ * [function name]
+ *
+ * FUNCTIONAL DESCRIPTION:
+ *
+ *      [Description of function]
+ *
+ * FORMAL PARAMETERS:
+ *
+ *      [Show arguments]
+ *
+ * IMPLICIT INPUT PARAMETERS:
+ *
+ *      [External data read]
+ *
+ * IMPLICIT OUTPUT PARAMETERS:
+ *
+ *      [External data modified]
+ *
+ * RETURN VALUE:
+ *
+ *      [Discuss return value]
+ *
+ ****************************************************************/
+void CUndo::Record(int nCardsFlipped) {
+	m_nStock    = nCardsFlipped;
+
+	m_pStack    = nullptr;
+	m_pCard     = nullptr;
+}
+
+/*****************************************************************
+ *
+ * Reset
+ *
+ * FUNCTIONAL DESCRIPTION:
+ *
+ *      Resets undo parameters
+ *
+ * FORMAL PARAMETERS:
+ *
+ *      [Show arguments]
+ *
+ * IMPLICIT INPUT PARAMETERS:
+ *
+ *      [External data read]
+ *
+ * IMPLICIT OUTPUT PARAMETERS:
+ *
+ *      [External data modified]
+ *
+ * RETURN VALUE:
+ *
+ *      [Discuss return value]
+ *
+ ****************************************************************/
+void CUndo::Reset() {
+	m_pStack    = nullptr;
+	m_pCard     = nullptr;
+	m_nStock    = NONE;
+}
+
+/*****************************************************************
+ *
+ * Undo
+ *
+ * FUNCTIONAL DESCRIPTION:
+ *
+ *      Puts card back into original position.
+ *      Returns true if undo was possible, else false.
+ *
+ * FORMAL PARAMETERS:
+ *
+ *      [Show arguments]
+ *
+ * IMPLICIT INPUT PARAMETERS:
+ *
+ *      [External data read]
+ *
+ * IMPLICIT OUTPUT PARAMETERS:
+ *
+ *      [External data modified]
+ *
+ * RETURN VALUE:
+ *
+ *      [Discuss return value]
+ *
+ ****************************************************************/
+bool CUndo::Undo(CDC *pDC, CBoard *pBoard, CPaint *pPaint) {
+	CCard   *pCard;
+	CPoint  cPos;
+	int     i;
+
+	if (m_nStock != NONE) {          // undo stock card flip?
+		for (i = 0; i < m_nStock; i++) {
+			//
+			// update interal representation
+			//
+			pCard = pBoard->GetStack((loc) used)->Pop();
+			pBoard->GetStack((loc) stock)->Push(pCard);
+
+			//
+			// update visual rep
+			//
+			pPaint->FlipCard(pDC, pCard);
+			pPaint->Stack(pDC, pCard);
+			pPaint->m_nUsedInd--;
+		} // end for
+
+		Reset();                    // clear undo
+		return true;
+	} // end if
+
+	if (m_pStack == nullptr)            // basic card undo?
+		return false;               // No - nothing can be undone
+
+
+	m_pCard->m_pStack->Pop();       // undo move in internal rep
+	m_pStack->Push(m_pCard);        // undo move in internal rep
+
+	if (m_pStack->GetID() == used) {         // card in used stack?
+		//
+		// messy code to handle special visual used stacking order
+		//
+		if (m_pCard->m_pPrevCard == nullptr) {
+			pPaint->m_nUsedInd = 0;
+		} else {
+			if (m_pCard->m_pPrevCard->m_cOrigin.x == m_pCard->m_pStack->m_cRect.TopLeft().x) {
+				pPaint->m_nUsedInd = 1;
+			} else if (m_pCard->m_pPrevCard->m_cOrigin.x == m_pCard->m_pStack->m_cRect.TopLeft().x + (1 * USED_DX)) {
+				pPaint->m_nUsedInd = 2;
+			} else {
+				pPaint->m_nUsedInd = 0;
+			} // end if
+		} // end if
+
+		pPaint->Stack(pDC, m_pCard);    // draw card apro stack
+		pPaint->m_nUsedInd = 0;
+	} else {
+		pPaint->Stack(pDC, m_pCard);    // draw card apro stack
+	} // end if
+
+	Reset();                        // clear undo
+	return true;
+}
+
+} // namespace Barbershop
+} // namespace HodjNPodj
+} // namespace Bagel