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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 "common/debug-channels.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/mouse.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;
_lastGameFrame = 0;
}
MortevielleEngine::~MortevielleEngine() {
}
bool MortevielleEngine::hasFeature(EngineFeature f) const {
return false;
}
Common::ErrorCode MortevielleEngine::initialise() {
// Initialise graphics mode
initGraphics(SCREEN_WIDTH, SCREEN_HEIGHT, true);
// Set debug channels
DebugMan.addDebugChannel(kMortevielleCore, "core", "Core debugging");
DebugMan.addDebugChannel(kMortevielleGraphics, "graphics", "Graphics debugging");
// 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
_screenSurface.readFontData(f, dataSize);
} else {
// Unknown section
f.skip(dataSize);
}
}
f.close();
return Common::kNoError;
}
bool MortevielleEngine::keyPressed() {
// Check for any pending key presses
handleEvents();
// Check if it's time to draw the next frame
if (g_system->getMillis() > (_lastGameFrame + GAME_FRAME_DELAY)) {
_lastGameFrame = g_system->getMillis();
g_vm->_screenSurface.updateScreen();
}
// Delay briefly to keep CPU usage down
g_system->delayMillis(5);
// Return if there are any pending key presses
return !_keypresses.empty();
}
int MortevielleEngine::getChar() {
// If there isn't any pending keypress, wait until there is
while (!shouldQuit() && _keypresses.empty()) {
keypressed();
}
// Return the top keypress
return shouldQuit() ? 0 : _keypresses.pop();
}
bool MortevielleEngine::handleEvents() {
Common::Event event;
if (!g_system->getEventManager()->pollEvent(event))
return false;
switch (event.type) {
case Common::EVENT_LBUTTONDOWN:
case Common::EVENT_LBUTTONUP:
case Common::EVENT_RBUTTONDOWN:
case Common::EVENT_RBUTTONUP:
case Common::EVENT_MBUTTONDOWN:
case Common::EVENT_MBUTTONUP:
case Common::EVENT_MOUSEMOVE:
x_s = event.mouse.x;
y_s = event.mouse.y;
break;
case Common::EVENT_KEYDOWN:
addKeypress(event);
break;
default:
break;
}
return true;
}
/**
* Add the specified key to the event queue
*/
void MortevielleEngine::addKeypress(Common::Event &evt) {
// Check for control keypresses
if (evt.kbd.hasFlags(Common::KBD_CTRL) && (evt.kbd.keycode >= Common::KEYCODE_a) &&
(evt.kbd.keycode <= Common::KEYCODE_z)) {
_keypresses.push(evt.kbd.keycode - Common::KEYCODE_a + 1);
return;
}
// Handle function keys
if ((evt.kbd.keycode >= Common::KEYCODE_F1) && (evt.kbd.keycode <= Common::KEYCODE_F12)) {
_keypresses.push(59 + evt.kbd.keycode - Common::KEYCODE_F1);
}
}
/*-------------------------------------------------------------------------*/
Common::Error MortevielleEngine::run() {
// Initialise the game
Common::ErrorCode err = initialise();
if (err != Common::kNoError)
return err;
// Set default palette
_paletteManager.setDefaultPalette();
// Dispatch to the game's main routine
mortevielle_main();
return Common::kNoError;
}
} // End of namespace Mortevielle
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