module.cpp

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/* xoreos - A reimplementation of BioWare's Aurora engine
 *
 * xoreos is the legal property of its developers, whose names
 * can be found in the AUTHORS file distributed with this source
 * distribution.
 *
 * xoreos 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.
 *
 * xoreos 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 xoreos. If not, see <http://www.gnu.org/licenses/>.
 */

#include "src/common/error.h"
#include "src/common/ustring.h"
#include "src/common/uuid.h"

#include "src/graphics/camera.h"

#include "src/events/events.h"

#include "src/aurora/nwscript/objectman.h"

#include "src/engines/aurora/console.h"

#include "src/engines/sonic/module.h"
#include "src/engines/sonic/area.h"

namespace Engines {

namespace Sonic {

Module::Module(::Engines::Console &console) : Object(kObjectTypeModule),
    _console(&console), _running(false), _exit(false), _newArea(-1) {
    _id = Common::generateIDNumber();
    ObjectMan.registerObject(this);
}

Module::~Module() {
    ObjectMan.unregisterObject(this);

    try {
        clear();
    } catch (...) {
    }
}

void Module::clear() {
    unload();
}

void Module::run() {
    _newArea = 3;
    _running = true;

    EventMan.enableKeyRepeat();

    try {

        EventMan.flushEvents();

        while (!EventMan.quitRequested() && !_exit) {
            loadArea();
            if (_exit)
                break;

            handleEvents();

            if (!EventMan.quitRequested() && !_exit)
                EventMan.delay(10);
        }

    } catch (Common::Exception &e) {
        _running = false;

        e.add("Failed running module");
        throw e;
    }

    EventMan.enableKeyRepeat(0);

    _running = false;
}

bool Module::isRunning() const {
    return _running;
}

void Module::exit() {
    _exit = true;
}

void Module::loadArea() {
    if (_area && (_area->getID() == (uint32)_newArea))
        return;

    unloadArea();

    if (_newArea < 0) {
        _exit = true;
        return;
    }

    _area.reset(new Area(*this, (uint32)_newArea));

    _area->enter();
    _area->show();
}

void Module::unloadArea() {
    if (_area) {
        _area->leave();
        _area->hide();
    }

    _area.reset();
}

void Module::unload() {
    unloadArea();
}

void Module::handleEvents() {
    Events::Event event;
    while (EventMan.pollEvent(event)) {
        // Handle console
        if (_console->isVisible()) {
            _console->processEvent(event);
            continue;
        }

        // Console
        if (event.type == Events::kEventKeyDown) {
            if ((event.key.keysym.sym == SDLK_d) && (event.key.keysym.mod & KMOD_CTRL)) {
                _console->show();
                continue;
            }
        }

        if (handleCameraEvents(event))
            continue;

        if (_area)
            _area->addEvent(event);
    }

    CameraMan.update();

    if (_area)
        _area->processEventQueue();
}

bool Module::handleCameraEvents(const Events::Event &event) {
    if (event.type == Events::kEventKeyDown) {
        float multiplier = 1.0f;
        if (event.key.keysym.mod & KMOD_SHIFT)
            multiplier = 5.0f;

        if      (event.key.keysym.sym      == SDLK_UP)
            CameraMan.move(0.0f, 0.0f, multiplier * -5.0f);
        else if (event.key.keysym.sym      == SDLK_DOWN)
            CameraMan.move(0.0f, 0.0f, multiplier *  5.0f);
        else if (event.key.keysym.sym      == SDLK_LEFT)
            CameraMan.move(multiplier * -5.0f, 0.0f, 0.0f);
        else if (event.key.keysym.sym      == SDLK_RIGHT)
            CameraMan.move(multiplier *  5.0f, 0.0f, 0.0f);
        else if (event.key.keysym.scancode == SDL_SCANCODE_W)
            CameraMan.move(0.0f, 0.0f, multiplier * -5.0f);
        else if (event.key.keysym.scancode == SDL_SCANCODE_S)
            CameraMan.move(0.0f, 0.0f, multiplier *  5.0f);
        else if (event.key.keysym.scancode == SDL_SCANCODE_A)
            CameraMan.move(multiplier * -5.0f, 0.0f, 0.0f);
        else if (event.key.keysym.scancode == SDL_SCANCODE_D)
            CameraMan.move(multiplier *  5.0f, 0.0f, 0.0f);
        else
            return false;
    } else if (event.type == Events::kEventMouseMove) {
        if (event.motion.state & SDL_BUTTON(2))
            CameraMan.move(1.0f * event.motion.xrel, 0.0f, 1.0f * event.motion.yrel);
        else
            return false;
    } else
        return false;

    return true;
}

Area *Module::getCurrentArea() {
    return _area.get();
}

void Module::movePC(int32 area) {
    _newArea = area;
}

} // End of namespace Sonic

} // End of namespace Engines