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119 lines
3.1 KiB
C++
119 lines
3.1 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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* 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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* 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 "dragons/credits.h"
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#include "common/system.h"
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#include "dragons/bigfile.h"
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#include "dragons/dragons.h"
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#include "dragons/screen.h"
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#include "dragons/font.h"
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namespace Dragons {
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void creditsUpdateFunction() {
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getEngine()->_credits->update();
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}
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Credits::Credits(DragonsEngine *vm, FontManager *fontManager, BigfileArchive *bigfileArchive) : _vm(vm),
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_fontManager(fontManager), _bigfileArchive(bigfileArchive), _surface(nullptr), _curPtr(nullptr) {
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_running = false;
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_updateCounter = 0;
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_yOffset = 0;
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_linesRemaining = 0x1a;
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_creditsData = nullptr;
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_dataLength = 0;
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_curPosition = 0;
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}
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void Credits::start() {
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_surface = new Graphics::Surface();
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_surface->create(320, 208, Graphics::PixelFormat::createFormatCLUT8());
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_updateCounter = 0x78;
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_curPosition = 0;
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_creditsData = _bigfileArchive->load("credits.txt", _dataLength);
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_curPtr = (char *)_creditsData;
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assert(_creditsData);
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_vm->setVsyncUpdateFunction(creditsUpdateFunction);
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_running = true;
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}
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bool Credits::isRunning() {
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return _running;
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}
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void Credits::draw() {
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if (_running) {
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_vm->_screen->copyRectToSurface8bppWrappedY(*_surface, _vm->_screen->getPalette(2), _yOffset);
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}
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}
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void Credits::cleanup() {
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_vm->setVsyncUpdateFunction(nullptr);
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_surface->free();
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delete _surface;
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}
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void Credits::update() {
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uint16 line[41];
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if (_updateCounter == 0) {
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_updateCounter = 2;
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_yOffset = (_yOffset + 1) % 208;
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if (_yOffset % 8 == 0) {
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if (_curPosition < _dataLength) {
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uint32 length = strlen(_curPtr);
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debug(3, "Credit line: %s", _curPtr);
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convertToWideChar(line, (byte *)_curPtr, 40);
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_curPtr += length + 1;
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_curPosition += length + 1;
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} else {
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if (_linesRemaining) {
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_linesRemaining--;
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}
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convertToWideChar(line, (const byte *)" ", 40);
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}
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_fontManager->_fonts[0]->renderToSurface(_surface, 0, (_yOffset + 200) % 208, line, 40);
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}
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} else {
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_updateCounter--;
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}
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if (_linesRemaining == 0) {
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_running = false;
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cleanup();
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}
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}
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void Credits::convertToWideChar(uint16 *destBuf, const byte *text, uint16 maxLength) {
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bool finished = false;
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for (int i = 0; i < maxLength; i++) {
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if (text[i] == 0) {
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finished = true;
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}
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destBuf[i] = !finished ? text[i] : ' ';
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}
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}
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} // End of namespace Dragons
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