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engines/bagel/spacebar/dialogs/credits_dialog.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 "graphics/cursorman.h"
+#include "bagel/spacebar/dialogs/credits_dialog.h"
+#include "bagel/spacebar/dialogs/opt_window.h"
+#include "bagel/spacebar/baglib/bagel.h"
+#include "bagel/spacebar/baglib/master_win.h"
+#include "bagel/boflib/file_functions.h"
+#include "bagel/boflib/string_functions.h"
+
+namespace Bagel {
+namespace SpaceBar {
+
+struct ST_CREDITS {
+	const char *_pszBackground;
+	const char *_pszTextFile;
+
+	int _nLeft;
+	int _nTop;
+	int _nRight;
+	int _nBottom;
+
+	int _nScrollRate;
+	int _nPointSize;
+
+};
+
+#define CREDIT_TIMER_ID 567
+
+#define NUM_SCREENS 12
+
+#define MY_MASK_COLOR 1
+#define LINE_HEIGHT 24
+#define PIX_SCROLL_DY 1
+
+static const ST_CREDITS g_cScreen[NUM_SCREENS] = {
+	// Background        Credit text    topLeft   BotRight  Delay   PointSize
+	{ "BARAREA.BMP",    "CREDITS1.TXT", 370,   6, 636, 150, 30,     20 },
+	{ "CILIA.BMP",      "CREDITS2.TXT",   6, 120, 310, 360, 10,     24 },
+	{ "AUDITON.BMP",    "CREDITS3.TXT", 320, 120, 636, 360, 10,     24 },
+	{ "CAST1.BMP",      "CAST1.TXT",      6, 120, 310, 360, 10,     24 },
+	{ "CAST2.BMP",      "CAST2.TXT",    376, 120, 636, 360, 10,     24 },
+	{ "CAST3.BMP",      "CAST3.TXT",      6, 120, 310, 360, 10,     24 },
+	{ "CAST4.BMP",      "CAST4.TXT",      6, 120, 290, 360, 10,     24 },
+	{ "VILDROID.BMP",   "CREDITS5.TXT", 394, 120, 636, 360, 10,     22 },
+	{ "ZZAZZL.BMP",     "CREDITS6.TXT",   6, 220, 284, 474, 10,     24 },
+	{ "SRAFFAN.BMP",    "CREDITS7.TXT", 352, 310, 636, 474, 10,     24 },
+	{ "FLEEBIX.BMP",    "CREDITS8.TXT", 466, 230, 636, 474, 10,     18 },
+	{ "TRISECKS.BMP",   "CREDITS9.TXT",   6, 374, 636, 474, 10,     24 }
+};
+
+static bool g_b1 = false;
+
+CBagCreditsDialog::CBagCreditsDialog() {
+	_iScreen = 0;
+	_pszNextLine = _pszEnd = nullptr;
+	_pszText = nullptr;
+	_nLines = 0;
+	_nNumPixels = 0;
+	_pCreditsBmp = nullptr;
+	_pSaveBmp = nullptr;
+
+	_bDisplay = false;
+}
+
+void CBagCreditsDialog::onInitDialog() {
+	assert(isValidObject(this));
+
+	// Hide cursor for credit screens
+	CursorMan.showMouse(false);
+
+	CBofDialog::onInitDialog();
+
+	setReturnValue(-1);
+
+	// Start at 1st credit screen
+	_iScreen = 0;
+
+	assert(_pBackdrop != nullptr);
+	CBofPalette *pPal = _pBackdrop->getPalette();
+	selectPalette(pPal);
+	g_b1 = true;
+
+	// Load 1st credit text file
+	loadNextTextFile();
+}
+
+ErrorCode CBagCreditsDialog::loadNextTextFile() {
+	assert(isValidObject(this));
+
+	// Our credits text must exist
+	assert(fileExists(buildSysDir(g_cScreen[_iScreen]._pszTextFile)));
+
+	CBofRect cRect;
+	cRect.left = g_cScreen[_iScreen]._nLeft;
+	cRect.top = g_cScreen[_iScreen]._nTop;
+	cRect.right = g_cScreen[_iScreen]._nRight;
+	cRect.bottom = g_cScreen[_iScreen]._nBottom;
+
+	// Get rid of any previous work area
+	delete _pCreditsBmp;
+	_pCreditsBmp = nullptr;
+
+	// Create a new work area
+	_pCreditsBmp = new CBofBitmap(cRect.width(), cRect.height() + LINE_HEIGHT + 2, _pBackdrop->getPalette());
+	_pCreditsBmp->fillRect(nullptr, MY_MASK_COLOR);
+
+	// Kill any previous work area
+	delete _pSaveBmp;
+	_pSaveBmp = new CBofBitmap(_pCreditsBmp->width(), _pCreditsBmp->height(), _pBackdrop->getPalette());
+
+	CBofRect tmpRect = _pSaveBmp->getRect();
+	_pBackdrop->paint(_pSaveBmp, &tmpRect, &cRect);
+
+	// Get rid of any previous credits screen
+	if (_pszText != nullptr) {
+		bofFree(_pszText);
+		_pszText = nullptr;
+	}
+
+	CBofFile cFile(buildSysDir(g_cScreen[_iScreen]._pszTextFile), CBF_BINARY | CBF_READONLY);
+
+	if (!cFile.errorOccurred()) {
+		// Read in text file
+		uint32 lSize = cFile.getLength();
+		_pszText = (char *)bofCleanAlloc(lSize + 1);
+
+		cFile.read(_pszText, lSize);
+
+		_pszNextLine = _pszText;
+		_pszEnd = _pszText + lSize;
+		_nNumPixels = 0;
+
+		// Determine the number of lines of text in credits
+		_nLines = strCharCount(_pszText, '\n');
+		strreplaceChar(_pszText, '\r', ' ');
+		strreplaceChar(_pszText, '\n', '\0');
+
+		paintLine(linesPerPage() - 1, _pszNextLine);
+		nextLine();
+		paintLine(linesPerPage(), _pszNextLine);
+		nextLine();
+
+		_bDisplay = true;
+	}
+
+	return _errCode;
+}
+
+int CBagCreditsDialog::linesPerPage() {
+	assert(isValidObject(this));
+
+	int retVal = (g_cScreen[_iScreen]._nBottom - g_cScreen[_iScreen]._nTop) / (LINE_HEIGHT + 2) + 1;
+
+	return retVal;
+}
+
+void CBagCreditsDialog::onClose() {
+	assert(isValidObject(this));
+
+	delete _pCreditsBmp;
+	_pCreditsBmp = nullptr;
+
+	delete _pSaveBmp;
+	_pSaveBmp = nullptr;
+
+	if (_pszText != nullptr) {
+		bofFree(_pszText);
+		_pszText = nullptr;
+	}
+
+	_pszNextLine = _pszEnd = nullptr;
+	_nLines = 0;
+	_nNumPixels = 0;
+
+	_bDisplay = false;
+
+	killBackdrop();
+
+	CBofDialog::onClose();
+
+	// Can have cursor back now
+	CursorMan.showMouse(true);
+}
+
+void CBagCreditsDialog::onPaint(CBofRect *pRect) {
+	assert(isValidObject(this));
+
+	paintBackdrop(pRect);
+
+	validateAnscestors();
+}
+
+void CBagCreditsDialog::onLButtonDown(uint32 /*nFlags*/, CBofPoint */*pPoint*/, void *) {
+	assert(isValidObject(this));
+
+	nextScreen();
+}
+
+void CBagCreditsDialog::onKeyHit(uint32 /*lKey*/, uint32 /*nRepCount*/) {
+	assert(isValidObject(this));
+
+	nextScreen();
+}
+
+void CBagCreditsDialog::onMainLoop() {
+	assert(isValidObject(this));
+
+	// If it's OK to show the credits
+	if (_bDisplay) {
+		displayCredits();
+	}
+
+	// Check again...could have changed in displayCredits()
+	if (_bDisplay) {
+		// Control the scroll rate
+		assert(_iScreen >= 0 && _iScreen < NUM_SCREENS);
+		bofSleep(g_cScreen[_iScreen]._nScrollRate);
+	}
+}
+
+ErrorCode CBagCreditsDialog::displayCredits() {
+	assert(isValidObject(this));
+
+	if (_nNumPixels < (_nLines + linesPerPage() + 1) * LINE_HEIGHT) {
+		assert(_pCreditsBmp != nullptr);
+
+		if (_pCreditsBmp != nullptr) {
+			assert(_pBackdrop != nullptr);
+			assert(_pSaveBmp != nullptr);
+
+			_pSaveBmp->paint(_pBackdrop, g_cScreen[_iScreen]._nLeft, g_cScreen[_iScreen]._nTop);
+			CBofRect cRect;
+			cRect.setRect(0, 0, _pCreditsBmp->width() - 1, _pCreditsBmp->height() - 1 - (LINE_HEIGHT + 2));
+			_pCreditsBmp->paint(_pBackdrop, g_cScreen[_iScreen]._nLeft, g_cScreen[_iScreen]._nTop, &cRect, MY_MASK_COLOR);
+
+			if (g_b1) {
+				_pBackdrop->paint(this, 0, 0);
+				g_b1 = false;
+
+			} else {
+				cRect.left = g_cScreen[_iScreen]._nLeft;
+				cRect.top = g_cScreen[_iScreen]._nTop;
+				cRect.right = cRect.left + _pCreditsBmp->width() - 1;
+				cRect.bottom = cRect.top + _pCreditsBmp->height() - 1 - (LINE_HEIGHT + 2);
+				_pBackdrop->paint(this, &cRect, &cRect);
+			}
+
+
+			// Strip off top layer so it won't wrap around
+			for (int i = 0; i < PIX_SCROLL_DY; i++) {
+				_pCreditsBmp->line(0, i, _pCreditsBmp->width() - 1, i, MY_MASK_COLOR);
+			}
+
+			// Scroll text up 1 pixel
+			_pCreditsBmp->scrollUp(PIX_SCROLL_DY);
+
+			_nNumPixels += PIX_SCROLL_DY;
+			if ((_nNumPixels % LINE_HEIGHT) == 0) {
+				paintLine(linesPerPage(), _pszNextLine);
+				nextLine();
+			}
+		}
+
+	} else {
+		nextScreen();
+	}
+
+	return _errCode;
+}
+
+ErrorCode CBagCreditsDialog::nextScreen() {
+	assert(isValidObject(this));
+
+	if (++_iScreen < NUM_SCREENS) {
+		// Load next screen (flushes previous backdrop)
+		CBofBitmap *pBmp = SpaceBar::loadBitmap(buildSysDir(g_cScreen[_iScreen]._pszBackground));
+		if (pBmp != nullptr) {
+			setBackdrop(pBmp);
+			g_b1 = true;
+		}
+
+		// Load credit text for this screen
+		loadNextTextFile();
+
+	} else {
+		// Since there are no more screens to show, then we are outta here
+		_bDisplay = false;
+		close();
+	}
+
+	return _errCode;
+}
+
+ErrorCode CBagCreditsDialog::paintLine(int nLine, char *pszText) {
+	assert(isValidObject(this));
+	assert(pszText != nullptr);
+	assert(nLine >= 0 && nLine <= linesPerPage());
+	assert(_pCreditsBmp != nullptr);
+
+	CBofRect cRect;
+	cRect.setRect(0, nLine * LINE_HEIGHT, _pCreditsBmp->width() - 1, (nLine + 1) * LINE_HEIGHT - 1);
+
+	_pCreditsBmp->fillRect(&cRect, MY_MASK_COLOR);
+
+	if (*pszText != '\0') {
+		paintShadowedText(_pCreditsBmp, &cRect, pszText, g_cScreen[_iScreen]._nPointSize, TEXT_NORMAL, CTEXT_WHITE, JUSTIFY_CENTER);
+	}
+
+	return _errCode;
+}
+
+void CBagCreditsDialog::nextLine() {
+	assert(isValidObject(this));
+	assert(_pszNextLine != nullptr);
+
+	if ((_pszNextLine != nullptr) && (_pszNextLine < _pszEnd)) {
+		while (*_pszNextLine != '\0') {
+			_pszNextLine++;
+		}
+
+		if (_pszNextLine < _pszEnd) {
+			_pszNextLine++;
+		}
+
+		assert(_pszNextLine <= _pszEnd);
+	}
+}
+
+} // namespace SpaceBar
+} // namespace Bagel