area.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/scopedptr.h"
#include "src/common/util.h"
#include "src/common/error.h"
#include "src/common/readstream.h"
#include "src/common/maths.h"

#include "src/aurora/resman.h"
#include "src/aurora/gff3file.h"
#include "src/aurora/2dafile.h"
#include "src/aurora/2dareg.h"

#include "src/graphics/graphics.h"
#include "src/graphics/renderable.h"

#include "src/graphics/aurora/cursorman.h"

#include "src/sound/sound.h"

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

#include "src/engines/kotor2/area.h"
#include "src/engines/kotor2/room.h"
#include "src/engines/kotor2/module.h"
#include "src/engines/kotor2/waypoint.h"
#include "src/engines/kotor2/placeable.h"
#include "src/engines/kotor2/door.h"
#include "src/engines/kotor2/creature.h"

namespace Engines {

namespace KotOR2 {

Area::CameraStyle::CameraStyle()
        : distance(0.0f),
          pitch(0.0f),
          height(0.0f) {
}

Area::Area(Module &module, const Common::UString &resRef)
        : Object(kObjectTypeArea),
          _module(&module),
          _resRef(resRef),
          _visible(false),
          _activeObject(0),
          _highlightAll(false),
          _triggersVisible(false),
          _activeTrigger(0),
          _walkmeshInvisible(true) {

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

    // Tell the module that we exist
    _module->addObject(*this);
}

Area::~Area() {
    _module->removeObject(*this);

    hide();

    removeFocus();

    clear();
}

void Area::load() {
    loadLYT(); // Room layout
    loadVIS(); // Room visibilities

    loadRooms();

    Aurora::GFF3File are(_resRef, Aurora::kFileTypeARE, MKTAG('A', 'R', 'E', ' '));
    loadARE(are.getTopLevel());

    Aurora::GFF3File git(_resRef, Aurora::kFileTypeGIT, MKTAG('G', 'I', 'T', ' '));
    loadGIT(git.getTopLevel());
}

void Area::clear() {
    for (ObjectList::iterator o = _objects.begin(); o != _objects.end(); ++o)
        _module->removeObject(**o);

    _objects.clear();
    _rooms.clear();
    _triggers.clear();
    _situatedObjects.clear();
    _activeTrigger = 0;
}

uint32 Area::getMusicDayTrack() const {
    return _musicDayTrack;
}

uint32 Area::getMusicNightTrack() const {
    return _musicNightTrack;
}

uint32 Area::getMusicBattleTrack() const {
    return _musicBattleTrack;
}

void Area::setMusicDayTrack(uint32 track) {
    _musicDayTrack = track;
    _musicDay      = TwoDAReg.get2DA("ambientmusic").getRow(track).getString("Resource");
}

void Area::setMusicNightTrack(uint32 track) {
    _musicNightTrack = track;
    _musicNight      = TwoDAReg.get2DA("ambientmusic").getRow(track).getString("Resource");
}

void Area::setMusicBattleTrack(uint32 track) {
    _musicBattleTrack = track;

    if (_musicBattleTrack != Aurora::kStrRefInvalid) {
        const Aurora::TwoDAFile &ambientMusic = TwoDAReg.get2DA("ambientmusic");

        // Normal battle music
        _musicBattle = ambientMusic.getRow(_musicBattleTrack).getString("Resource");

        // Battle stingers
        Common::UString stinger[3];
        stinger[0] = ambientMusic.getRow(_musicBattleTrack).getString("Stinger1");
        stinger[1] = ambientMusic.getRow(_musicBattleTrack).getString("Stinger2");
        stinger[2] = ambientMusic.getRow(_musicBattleTrack).getString("Stinger3");

        _musicBattleStinger.clear();
        for (int i = 0; i < 3; i++)
            if (!stinger[i].empty())
                _musicBattleStinger.push_back(stinger[i]);
    }
}

void Area::stopSound() {
    stopAmbientMusic();
    stopAmbientSound();
}

void Area::stopAmbientMusic() {
    SoundMan.stopChannel(_ambientMusic);
}

void Area::stopAmbientSound() {
    SoundMan.stopChannel(_ambientSound);
}

void Area::playAmbientMusic(Common::UString music) {
    stopAmbientMusic();

    // TODO: Area::playAmbientMusic(): Day/Night
    if (music.empty())
        music = _musicDay;

    if (music.empty())
        return;

    _ambientMusic = ::Engines::playSound(music, Sound::kSoundTypeMusic, true);
}

void Area::playAmbientSound(Common::UString sound) {
    stopAmbientSound();

    // TODO: Area::playAmbientSound():  Day/Night
    if (sound.empty())
        sound = _ambientDay;

    if (sound.empty())
        return;

    _ambientSound = ::Engines::playSound(sound, Sound::kSoundTypeSFX, true, _ambientDayVol);
}

void Area::show() {
    if (_visible)
        return;

    GfxMan.lockFrame();

    // Show rooms
    for (RoomList::iterator r = _rooms.begin(); r != _rooms.end(); ++r)
        (*r)->show();

    // Show objects
    for (ObjectList::iterator o = _objects.begin(); o != _objects.end(); ++o)
        (*o)->show();

    GfxMan.unlockFrame();

    // Play music and sound
    playAmbientSound();
    playAmbientMusic();

    _visible = true;
}

void Area::hide() {
    if (!_visible)
        return;

    removeFocus();

    stopSound();

    GfxMan.lockFrame();

    // Hide objects
    for (ObjectList::iterator o = _objects.begin(); o != _objects.end(); ++o)
        (*o)->hide();

    // Hide rooms
    for (RoomList::iterator r = _rooms.begin(); r != _rooms.end(); ++r)
        (*r)->hide();

    GfxMan.unlockFrame();

    _visible = false;
}

void Area::loadLYT() {
    try {
        Common::ScopedPtr<Common::SeekableReadStream> lyt(ResMan.getResource(_resRef, Aurora::kFileTypeLYT));
        if (!lyt)
            throw Common::Exception("No such LYT");

        _lyt.load(*lyt);

    } catch (Common::Exception &e) {
        e.add("Failed loading LYT \"%s\"", _resRef.c_str());
        throw;
    }
}

void Area::loadVIS() {
    try {
        Common::ScopedPtr<Common::SeekableReadStream> vis(ResMan.getResource(_resRef, Aurora::kFileTypeVIS));
        if (!vis)
            throw Common::Exception("No such VIS");

        _vis.load(*vis);

    } catch (Common::Exception &e) {
        e.add("Failed loading VIS \"%s\"", _resRef.c_str());
        throw;
    }
}

void Area::loadARE(const Aurora::GFF3Struct &are) {
    // Tag
    _tag = are.getString("Tag");

    // Name
    _name = are.getString("Name");

    // Camera style
    loadCameraStyle(are.getUint("CameraStyle"));

    // Scripts
    readScripts(are);
}

void Area::loadCameraStyle(uint32 id) {
    const Aurora::TwoDAFile &tda = TwoDAReg.get2DA("camerastyle");
    const Aurora::TwoDARow &row = tda.getRow(id);
    _cameraStyle.distance = row.getFloat("distance");
    _cameraStyle.pitch = row.getFloat("pitch");
    _cameraStyle.height = row.getFloat("height");
}

void Area::loadGIT(const Aurora::GFF3Struct &git) {
    if (git.hasField("AreaProperties"))
        loadProperties(git.getStruct("AreaProperties"));

    if (git.hasField("WaypointList"))
        loadWaypoints(git.getList("WaypointList"));

    if (git.hasField("Placeable List"))
        loadPlaceables(git.getList("Placeable List"));

    if (git.hasField("Door List"))
        loadDoors(git.getList("Door List"));

    if (git.hasField("Creature List"))
        loadCreatures(git.getList("Creature List"));

    if (git.hasField("TriggerList"))
        loadTriggers(git.getList("TriggerList"));
}

void Area::loadProperties(const Aurora::GFF3Struct &props) {
    // Ambient sound

    const Aurora::TwoDAFile &ambientSound = TwoDAReg.get2DA("ambientsound");

    uint32 ambientDay   = props.getUint("AmbientSndDay"  , Aurora::kStrRefInvalid);
    uint32 ambientNight = props.getUint("AmbientSndNight", Aurora::kStrRefInvalid);

    _ambientDay   = ambientSound.getRow(ambientDay  ).getString("Resource");
    _ambientNight = ambientSound.getRow(ambientNight).getString("Resource");

    uint32 ambientDayVol   = CLIP<uint32>(props.getUint("AmbientSndDayVol"  , 127), 0, 127);
    uint32 ambientNightVol = CLIP<uint32>(props.getUint("AmbientSndNightVol", 127), 0, 127);

    _ambientDayVol   = 1.25f * (1.0f - (1.0f / powf(5.0f, ambientDayVol   / 127.0f)));
    _ambientNightVol = 1.25f * (1.0f - (1.0f / powf(5.0f, ambientNightVol / 127.0f)));

    // TODO: PresetInstance0 - PresetInstance7


    // Ambient music

    setMusicDayTrack  (props.getUint("MusicDay"   , Aurora::kStrRefInvalid));
    setMusicNightTrack(props.getUint("MusicNight" , Aurora::kStrRefInvalid));

    // Battle music

    setMusicBattleTrack(props.getUint("MusicBattle", Aurora::kStrRefInvalid));
}

void Area::loadRooms() {
    const Aurora::LYTFile::RoomArray &rooms = _lyt.getRooms();
    for (Aurora::LYTFile::RoomArray::const_iterator r = rooms.begin(); r != rooms.end(); ++r) {
        _rooms.push_back(new Room(r->model, r->x, r->y, r->z));
    }
}

void Area::loadObject(KotOR2::Object &object) {
    _objects.push_back(&object);
    _module->addObject(object);

    if (!object.isStatic()) {
        const std::list<uint32> &ids = object.getIDs();

        for (std::list<uint32>::const_iterator id = ids.begin(); id != ids.end(); ++id)
            _objectMap.insert(std::make_pair(*id, &object));
    }

    notifyObjectMoved(object);
}

void Area::loadWaypoints(const Aurora::GFF3List &list) {
    for (Aurora::GFF3List::const_iterator w = list.begin(); w != list.end(); ++w) {
        Waypoint *waypoint = new Waypoint(**w);

        loadObject(*waypoint);
    }
}

void Area::loadPlaceables(const Aurora::GFF3List &list) {
    for (Aurora::GFF3List::const_iterator p = list.begin(); p != list.end(); ++p) {
        Placeable *placeable = new Placeable(**p);

        loadObject(*placeable);
        _situatedObjects.push_back(placeable);
    }
}

void Area::loadDoors(const Aurora::GFF3List &list) {
    for (Aurora::GFF3List::const_iterator d = list.begin(); d != list.end(); ++d) {
        Door *door = new Door(*_module, **d);

        loadObject(*door);
        _situatedObjects.push_back(door);
    }
}

void Area::loadCreatures(const Aurora::GFF3List &list) {
    for (Aurora::GFF3List::const_iterator c = list.begin(); c != list.end(); ++c) {
        Creature *creature = new Creature(**c);

        loadObject(*creature);
    }
}

void Area::loadTriggers(const Aurora::GFF3List &list) {
    for (Aurora::GFF3List::const_iterator t = list.begin(); t != list.end(); ++t) {
        Trigger *trigger = new Trigger(**t);

        loadObject(*trigger);
        _triggers.push_back(trigger);
    }
}

void Area::addEvent(const Events::Event &event) {
    _eventQueue.push_back(event);
}

void Area::processEventQueue() {
    bool hasMove = false;
    for (std::list<Events::Event>::const_iterator e = _eventQueue.begin();
         e != _eventQueue.end(); ++e) {

        if        (e->type == Events::kEventMouseMove) { // Moving the mouse
            hasMove = true;
        } else if (e->type == Events::kEventMouseDown) { // Clicking
            if (e->button.button == SDL_BUTTON_LMASK) {
                checkActive(e->button.x, e->button.y);
                click(e->button.x, e->button.y);
            }
        } else if (e->type == Events::kEventKeyDown) { // Holding down TAB
            if (e->key.keysym.sym == SDLK_TAB)
                highlightAll(true);
        } else if (e->type == Events::kEventKeyUp) {   // Releasing TAB
            if (e->key.keysym.sym == SDLK_TAB)
                highlightAll(false);
        }
    }

    _eventQueue.clear();

    if (hasMove)
        checkActive();
}

KotOR2::Object *Area::getObjectAt(int x, int y) {
    const Graphics::Renderable *obj = GfxMan.getObjectAt(x, y);
    if (!obj)
        return 0;

    ObjectMap::iterator o = _objectMap.find(obj->getID());
    if (o == _objectMap.end())
        return 0;

    return o->second;
}

void Area::setActive(KotOR2::Object *object) {
    if (object == _activeObject)
        return;

    if (_activeObject)
        _activeObject->leave();

    _activeObject = object;

    if (_activeObject)
        _activeObject->enter();
}

void Area::checkActive(int x, int y) {
    if (_highlightAll)
        return;

    Common::StackLock lock(_mutex);

    if ((x < 0) || (y < 0))
        CursorMan.getPosition(x, y);

    setActive(getObjectAt(x, y));
}

void Area::click(int x, int y) {
    Common::StackLock lock(_mutex);

    KotOR2::Object *o = getObjectAt(x, y);
    if (!o)
        return;

    o->click(_module->getPC());
    _module->clickObject(o);
}

void Area::highlightAll(bool enabled) {
    if (_highlightAll == enabled)
        return;

    _highlightAll = enabled;

    for (ObjectMap::iterator o = _objectMap.begin(); o != _objectMap.end(); ++o)
        if (o->second->isClickable())
            o->second->highlight(enabled);
}

void Area::removeFocus() {
    if (_activeObject)
        _activeObject->leave();

    _activeObject = 0;
}

void Area::notifyCameraMoved() {
    checkActive();
}

float Area::evaluateElevation(float x, float y) {
    Room *room = _module->getPC()->getRoom();

    float result = room ? room->evaluateElevation(x, y, true) : FLT_MIN;
    if (result != FLT_MIN)
        return result;

    if (room)
        room->disableWalkmeshHighlight();

    for (RoomList::iterator r = _rooms.begin();
            r != _rooms.end(); ++r) {
        if (*r != room) {
            result = (*r)->evaluateElevation(x, y, true);
            if (result != FLT_MIN)
                break;
        }
    }

    return result;
}

bool Area::testCollision(const glm::vec3 &orig, const glm::vec3 &dest) const {
    for (std::list<Situated *>::const_iterator s = _situatedObjects.begin();
            s != _situatedObjects.end(); ++s) {
        if ((*s)->testCollision(orig, dest))
            return true;
    }
    return false;
}

void Area::toggleWalkmesh() {
    _walkmeshInvisible = !_walkmeshInvisible;

    for (RoomList::iterator r = _rooms.begin();
            r != _rooms.end(); ++r) {
        (*r)->setWalkmeshInvisible(_walkmeshInvisible);
    }

    for (std::list<Situated *>::iterator s = _situatedObjects.begin();
            s != _situatedObjects.end(); ++s) {
        (*s)->setWalkmeshInvisible(_walkmeshInvisible);
    }
}

void Area::toggleTriggers() {
    _triggersVisible = !_triggersVisible;
    for (std::vector<Trigger *>::const_iterator it = _triggers.begin();
            it != _triggers.end();
            ++it) {
        (*it)->setVisible(_triggersVisible);
    }
}

void Area::evaluateTriggers(float x, float y) {
    Trigger *trigger = 0;

    for (std::vector<Trigger *>::iterator it = _triggers.begin();
            it != _triggers.end();
            ++it) {
        Trigger *t = *it;
        if (t->contains(x, y)) {
            trigger = t;
            break;
        }
    }

    if (_activeTrigger != trigger) {
        if (_activeTrigger)
            _activeTrigger->runScript(kScriptExit, this, _module->getPC());
        _activeTrigger = trigger;
        if (_activeTrigger)
            _activeTrigger->runScript(kScriptEnter, this, _module->getPC());
    }
}

void Area::showAllRooms() {
    GfxMan.pauseAnimations();

    for (RoomList::iterator r = _rooms.begin();
            r != _rooms.end(); ++r) {
        if (!(*r)->isVisible())
            (*r)->show();
    }

    for (ObjectList::iterator o = _objects.begin();
            o != _objects.end(); ++o) {
        if (!(*o)->isVisible())
            (*o)->show();
    }

    GfxMan.resumeAnimations();
}

void Area::notifyObjectMoved(Object &o) {
    float x, y, z;
    o.getPosition(x, y, z);
    o.setRoom(getRoomAt(x, y));
}

void Area::notifyPCMoved() {
    Creature *pc = _module->getPC();

    const Room *prevPCRoom = pc->getRoom();
    notifyObjectMoved(*pc);
    const Room *pcRoom = pc->getRoom();

    if (pcRoom == prevPCRoom)
        return;

    std::vector<Common::UString> visRooms;
    if (pcRoom) {
        visRooms.push_back(pcRoom->getResRef());

        const std::vector<Common::UString> va = _vis.getVisibilityArray(pcRoom->getResRef());
        for (std::vector<Common::UString>::const_iterator v = va.begin();
                v != va.end(); ++v) {
            Common::UString lcResRef(v->toLower());
            if (std::find(visRooms.begin(), visRooms.end(), lcResRef) == visRooms.end())
                visRooms.push_back(lcResRef);
        }
    }

    GfxMan.pauseAnimations();

    for (RoomList::iterator r = _rooms.begin();
            r != _rooms.end(); ++r) {
        bool visible = std::find(visRooms.begin(), visRooms.end(), (*r)->getResRef()) != visRooms.end();
        if (visible) {
            if (!(*r)->isVisible())
                (*r)->show();
        } else if ((*r)->isVisible())
            (*r)->hide();
    }

    for (ObjectList::iterator o = _objects.begin();
            o != _objects.end(); ++o) {
        const Room *objRoom = (*o)->getRoom();
        bool visible = objRoom && objRoom->isVisible();
        if (visible) {
            if (!(*o)->isVisible())
                (*o)->show();
        } else if ((*o)->isVisible())
            (*o)->hideSoft();
    }

    GfxMan.resumeAnimations();
}

void Area::getCameraStyle(float &distance, float &pitch, float &height) const {
    distance = _cameraStyle.distance;
    pitch = _cameraStyle.pitch;
    height = _cameraStyle.height;
}

const std::vector<Common::UString> &Area::getRoomsVisibleFrom(const Common::UString &room) const {
    return _vis.getVisibilityArray(room);
}

KotOR2::Object *Area::getActiveObject() {
    return _activeObject;
}

KotOR2::Object *Area::getObjectByTag(const Common::UString &tag) {
    for (ObjectList::iterator o = _objects.begin();
            o != _objects.end(); ++o) {
        if ((*o)->getTag().stricmp(tag) == 0)
            return *o;
    }
    return 0;
}

Room *Area::getRoomAt(float x, float y) const {
    for (RoomList::const_iterator r = _rooms.begin();
            r != _rooms.end(); ++r) {
        if ((*r)->evaluateElevation(x, y) != FLT_MIN)
            return *r;
    }
    return 0;
}

} // End of namespace KotOR2

} // End of namespace Engines