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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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "common/system.h"
#include "engines/util.h"
#include "engines/engine.h"
#include "graphics/palette.h"
#include "graphics/pixelformat.h"
#include "mortevielle/mortevielle.h"
#include "mortevielle/mort.h"
#include "mortevielle/var_mor.h"
namespace Mortevielle {
MortevielleEngine *g_vm;
MortevielleEngine::MortevielleEngine(OSystem *system, const ADGameDescription *gameDesc):
Engine(system), _gameDescription(gameDesc) {
g_vm = this;
}
MortevielleEngine::~MortevielleEngine() {
}
bool MortevielleEngine::hasFeature(EngineFeature f) const {
return false;
}
Common::ErrorCode MortevielleEngine::initialise() {
// Initialise graphics mode
initGraphics(SCREEN_WIDTH, SCREEN_HEIGHT, true);
// Set up an intermediate screen surface
_screenSurface.create(SCREEN_WIDTH, SCREEN_HEIGHT, Graphics::PixelFormat::createFormatCLUT8());
// Set the screen mode
gd = ega;
res = 2;
// Load the mort.dat resource
return loadMortDat();
}
/**
* Loads the contents of the Mort.dat data file
*/
Common::ErrorCode MortevielleEngine::loadMortDat() {
Common::File f;
// Open the mort.dat file
if (!f.open(MORT_DAT)) {
GUIErrorMessage("Could not locate Mort.dat file");
return Common::kReadingFailed;
}
// Validate the data file header
char fileId[4];
f.read(fileId, 4);
if (strncmp(fileId, "MORT", 4) != 0) {
GUIErrorMessage("The located mort.dat data file is invalid");
return Common::kReadingFailed;
}
// Check the version
if (f.readByte() < MORT_DAT_REQUIRED_VERSION) {
GUIErrorMessage("The located mort.dat data file is too a version");
return Common::kReadingFailed;
}
f.readByte(); // Minor version
// Loop to load resources from the data file
while (f.pos() < f.size()) {
// Get the Id and size of the next resource
char dataType[4];
int dataSize;
f.read(dataType, 4);
dataSize = f.readUint16LE();
if (!strncmp(dataType, "FONT", 4)) {
// Font resource
assert(dataSize == (FONT_NUM_CHARS * FONT_HEIGHT));
f.read(_fontData, FONT_NUM_CHARS * FONT_HEIGHT);
} else {
// Unknown section
f.skip(dataSize);
}
}
f.close();
return Common::kNoError;
}
/*-------------------------------------------------------------------------*/
/**
* Update the physical screen
*/
void MortevielleEngine::updateScreen() {
g_system->copyRectToScreen((const byte *)_screenSurface.getBasePtr(0, 0),
SCREEN_WIDTH, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
g_system->updateScreen();
}
/**
* Draws a character at the specified co-ordinates
* @remarks Because the ScummVM surface is using a double height 640x200 surface to
* simulate the original 640x200 surface, all Y values have to be doubled
*/
void MortevielleEngine::writeCharacter(const Common::Point &pt, unsigned char ch,
int palIndex, Graphics::Surface *surface) {
if (surface == NULL)
surface = &_screenSurface;
// Get the start of the character to use
assert((ch >= ' ') && (ch <= (unsigned char)(32 + FONT_NUM_CHARS)));
const byte *charData = &_fontData[((int)ch - 32) * FONT_HEIGHT];
// Loop through decoding each character's data
for (int yp = 0; yp < FONT_HEIGHT; ++yp) {
byte *lineP = (byte *)surface->getBasePtr(pt.x, (pt.y + yp) * 2);
byte byteVal = *charData++;
for (int xp = 0; xp < 8; ++xp, ++lineP, byteVal <<= 1) {
if (byteVal & 0x80) {
*lineP = palIndex;
*(lineP + SCREEN_WIDTH) = palIndex;
}
}
}
}
/**
* Sets a single pixel at the specified co-ordinates
* @remarks Because the ScummVM surface is using a double height 640x200 surface to
* simulate the original 640x200 surface, all Y values have to be doubled
*/
void MortevielleEngine::setPixel(const Common::Point &pt, int palIndex,
Graphics::Surface *surface) {
if (surface == NULL)
surface = &_screenSurface;
byte *destP = (byte *)surface->getBasePtr(pt.x, pt.y * 2);
*destP = palIndex;
*(destP + SCREEN_WIDTH) = palIndex;
}
/*-------------------------------------------------------------------------*/
Common::Error MortevielleEngine::run() {
// Initialise the game
Common::ErrorCode err = initialise();
if (err != Common::kNoError)
return err;
// TODO: Remove once palette loading is correctly done
uint32 white = 0xffffffff;
g_system->getPaletteManager()->setPalette((const byte *)&white, 15, 1);
// Dispatch to the game's main routine
const char *argv[] = { "" };
mortevielle_main(1, argv);
return Common::kNoError;
}
} // End of namespace Mortevielle
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