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/*
* The Mana Server
* Copyright (C) 2004-2010 The Mana World Development Team
*
* This file is part of The Mana Server.
*
* The Mana Server 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
* any later version.
*
* The Mana Server 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 The Mana Server. If not, see <http://www.gnu.org/licenses/>.
*/
#include <cassert>
#include "game-server/state.h"
#include "common/configuration.h"
#include "game-server/accountconnection.h"
#include "game-server/gamehandler.h"
#include "game-server/inventory.h"
#include "game-server/item.h"
#include "game-server/itemmanager.h"
#include "game-server/effect.h"
#include "game-server/map.h"
#include "game-server/mapcomposite.h"
#include "game-server/mapmanager.h"
#include "game-server/monster.h"
#include "game-server/npc.h"
#include "game-server/trade.h"
#include "net/messageout.h"
#include "scripting/script.h"
#include "utils/logger.h"
#include "utils/point.h"
#include "utils/speedconv.h"
enum
{
EVENT_REMOVE = 0,
EVENT_INSERT,
EVENT_WARP
};
/**
* Event expected to happen at next update.
*/
struct DelayedEvent
{
unsigned short type, x, y;
MapComposite *map;
};
typedef std::map< Actor *, DelayedEvent > DelayedEvents;
/**
* List of delayed events.
*/
static DelayedEvents delayedEvents;
/**
* Cached persistent script variables
*/
static std::map< std::string, std::string > mScriptVariables;
/**
* Updates object states on the map.
*/
static void updateMap(MapComposite *map)
{
// 1. update object status.
const std::vector< Thing * > &things = map->getEverything();
for (std::vector< Thing * >::const_iterator i = things.begin(),
i_end = things.end(); i != i_end; ++i)
{
(*i)->update();
}
// 2. run scripts.
if (Script *s = map->getScript())
{
s->update();
}
// 3. perform actions.
for (BeingIterator i(map->getWholeMapIterator()); i; ++i)
{
(*i)->perform();
}
// 4. move objects around and update zones.
for (BeingIterator i(map->getWholeMapIterator()); i; ++i)
{
(*i)->move();
}
map->update();
}
/**
* Sets message fields describing character look.
*/
static void serializeLooks(Character *ch, MessageOut &msg)
{
const EquipData &equipData = ch->getPossessions().getEquipment();
// We'll use a set to check whether we already sent the update for the given
// item instance.
std::set<unsigned int> itemInstances;
// The map storing the info about the look changes to send
//{ slot type id, item id }
std::map <unsigned int, unsigned int> lookChanges;
// Note that we can send several updates on the same slot type as different
// items may have been equipped.
for (EquipData::const_iterator it = equipData.begin(),
it_end = equipData.end(); it != it_end; ++it)
{
if (!itemManager->isEquipSlotVisible(it->first))
continue;
if (!it->second.itemInstance
|| itemInstances.insert(it->second.itemInstance).second)
{
// When the insertion succeeds, its the first time
// we encounter the item, so we can send the look change.
// We also send empty slots for unequipment handling.
lookChanges.insert(
std::make_pair<unsigned int, unsigned int>(it->first,
it->second.itemId));
}
}
if (lookChanges.size() > 0)
{
// Number of look changes to send
msg.writeInt8(lookChanges.size());
for (std::map<unsigned int, unsigned int>::const_iterator it2 =
lookChanges.begin(), it2_end = lookChanges.end();
it2 != it2_end; ++it2)
{
msg.writeInt8(it2->first);
msg.writeInt16(it2->second);
}
}
}
/**
* Informs a player of what happened around the character.
*/
static void informPlayer(MapComposite *map, Character *p, int worldTime)
{
MessageOut moveMsg(GPMSG_BEINGS_MOVE);
MessageOut damageMsg(GPMSG_BEINGS_DAMAGE);
const Point &pold = p->getOldPosition(), ppos = p->getPosition();
int pid = p->getPublicID(), pflags = p->getUpdateFlags();
int visualRange = Configuration::getValue("game_visualRange", 448);
// Inform client about activities of other beings near its character
for (BeingIterator i(map->getAroundBeingIterator(p, visualRange)); i; ++i)
{
Being *o = *i;
const Point &oold = o->getOldPosition(), opos = o->getPosition();
int otype = o->getType();
int oid = o->getPublicID(), oflags = o->getUpdateFlags();
int flags = 0;
// Check if the character p and the moving object o are around.
bool wereInRange = pold.inRangeOf(oold, visualRange) &&
!((pflags | oflags) & UPDATEFLAG_NEW_ON_MAP);
bool willBeInRange = ppos.inRangeOf(opos, visualRange);
if (!wereInRange && !willBeInRange)
{
// Nothing to report: o and p are far away from each other.
continue;
}
if (wereInRange && willBeInRange)
{
// Send attack messages.
if ((oflags & UPDATEFLAG_ATTACK) && oid != pid)
{
MessageOut AttackMsg(GPMSG_BEING_ATTACK);
AttackMsg.writeInt16(oid);
AttackMsg.writeInt8(o->getDirection());
AttackMsg.writeInt8(static_cast< Being * >(o)->getAttackId());
gameHandler->sendTo(p, AttackMsg);
}
// Send action change messages.
if ((oflags & UPDATEFLAG_ACTIONCHANGE))
{
MessageOut ActionMsg(GPMSG_BEING_ACTION_CHANGE);
ActionMsg.writeInt16(oid);
ActionMsg.writeInt8(static_cast< Being * >(o)->getAction());
gameHandler->sendTo(p, ActionMsg);
}
// Send looks change messages.
if (oflags & UPDATEFLAG_LOOKSCHANGE)
{
MessageOut LooksMsg(GPMSG_BEING_LOOKS_CHANGE);
LooksMsg.writeInt16(oid);
Character * c = static_cast<Character * >(o);
serializeLooks(c, LooksMsg);
LooksMsg.writeInt16(c->getHairStyle());
LooksMsg.writeInt16(c->getHairColor());
LooksMsg.writeInt16(c->getGender());
gameHandler->sendTo(p, LooksMsg);
}
// Send direction change messages.
if (oflags & UPDATEFLAG_DIRCHANGE)
{
MessageOut DirMsg(GPMSG_BEING_DIR_CHANGE);
DirMsg.writeInt16(oid);
DirMsg.writeInt8(o->getDirection());
gameHandler->sendTo(p, DirMsg);
}
// Send damage messages.
if (o->canFight())
{
Being *victim = static_cast< Being * >(o);
const Hits &hits = victim->getHitsTaken();
for (Hits::const_iterator j = hits.begin(),
j_end = hits.end(); j != j_end; ++j)
{
damageMsg.writeInt16(oid);
damageMsg.writeInt16(*j);
}
}
if (oold == opos)
{
// o does not move, nothing more to report.
continue;
}
}
if (!willBeInRange)
{
// o is no longer visible from p. Send leave message.
MessageOut leaveMsg(GPMSG_BEING_LEAVE);
leaveMsg.writeInt16(oid);
gameHandler->sendTo(p, leaveMsg);
continue;
}
if (!wereInRange)
{
// o is now visible by p. Send enter message.
MessageOut enterMsg(GPMSG_BEING_ENTER);
enterMsg.writeInt8(otype);
enterMsg.writeInt16(oid);
enterMsg.writeInt8(static_cast< Being *>(o)->getAction());
enterMsg.writeInt16(opos.x);
enterMsg.writeInt16(opos.y);
enterMsg.writeInt8(o->getDirection());
switch (otype)
{
case OBJECT_CHARACTER:
{
Character *q = static_cast< Character * >(o);
enterMsg.writeString(q->getName());
enterMsg.writeInt8(q->getHairStyle());
enterMsg.writeInt8(q->getHairColor());
enterMsg.writeInt8(q->getGender());
serializeLooks(q, enterMsg);
} break;
case OBJECT_MONSTER:
{
Monster *q = static_cast< Monster * >(o);
enterMsg.writeInt16(q->getSpecy()->getId());
enterMsg.writeString(q->getName());
} break;
case OBJECT_NPC:
{
NPC *q = static_cast< NPC * >(o);
enterMsg.writeInt16(q->getNPC());
enterMsg.writeString(q->getName());
} break;
default:
assert(false); // TODO
}
gameHandler->sendTo(p, enterMsg);
}
if (opos != oold)
{
// Add position check coords every 5 seconds.
if (worldTime % 50 == 0)
flags |= MOVING_POSITION;
flags |= MOVING_DESTINATION;
}
// Send move messages.
moveMsg.writeInt16(oid);
moveMsg.writeInt8(flags);
if (flags & MOVING_POSITION)
{
moveMsg.writeInt16(oold.x);
moveMsg.writeInt16(oold.y);
}
if (flags & MOVING_DESTINATION)
{
moveMsg.writeInt16(opos.x);
moveMsg.writeInt16(opos.y);
// We multiply the sent speed (in tiles per second) by ten
// to get it within a byte with decimal precision.
// For instance, a value of 4.5 will be sent as 45.
moveMsg.writeInt8((unsigned short)
(o->getModifiedAttribute(ATTR_MOVE_SPEED_TPS) * 10));
}
}
// Do not send a packet if nothing happened in p's range.
if (moveMsg.getLength() > 2)
gameHandler->sendTo(p, moveMsg);
if (damageMsg.getLength() > 2)
gameHandler->sendTo(p, damageMsg);
// Inform client about status change.
p->sendStatus();
// Inform client about health change of party members
for (CharacterIterator i(map->getWholeMapIterator()); i; ++i)
{
Character *c = *i;
// Make sure its not the same character
if (c == p)
continue;
// make sure they are in the same party
if (c->getParty() == p->getParty())
{
int cflags = c->getUpdateFlags();
if (cflags & UPDATEFLAG_HEALTHCHANGE)
{
MessageOut healthMsg(GPMSG_BEING_HEALTH_CHANGE);
healthMsg.writeInt16(c->getPublicID());
healthMsg.writeInt16(c->getModifiedAttribute(ATTR_HP));
healthMsg.writeInt16(c->getModifiedAttribute(ATTR_MAX_HP));
gameHandler->sendTo(p, healthMsg);
}
}
}
// Inform client about items on the ground around its character
MessageOut itemMsg(GPMSG_ITEMS);
for (FixedActorIterator i(map->getAroundBeingIterator(p, visualRange)); i;
++i)
{
assert((*i)->getType() == OBJECT_ITEM ||
(*i)->getType() == OBJECT_EFFECT);
Actor *o = *i;
Point opos = o->getPosition();
int oflags = o->getUpdateFlags();
bool willBeInRange = ppos.inRangeOf(opos, visualRange);
bool wereInRange = pold.inRangeOf(opos, visualRange) &&
!((pflags | oflags) & UPDATEFLAG_NEW_ON_MAP);
if (willBeInRange ^ wereInRange)
{
switch (o->getType())
{
case OBJECT_ITEM:
{
Item *o = static_cast< Item * >(*i);
if (oflags & UPDATEFLAG_NEW_ON_MAP)
{
/* Send a specific message to the client when an item appears
out of nowhere, so that a sound/animation can be performed. */
MessageOut appearMsg(GPMSG_ITEM_APPEAR);
appearMsg.writeInt16(o->getItemClass()->getDatabaseID());
appearMsg.writeInt16(opos.x);
appearMsg.writeInt16(opos.y);
gameHandler->sendTo(p, appearMsg);
}
else
{
itemMsg.writeInt16(willBeInRange ? o->getItemClass()->getDatabaseID() : 0);
itemMsg.writeInt16(opos.x);
itemMsg.writeInt16(opos.y);
}
}
break;
case OBJECT_EFFECT:
{
Effect *o = static_cast< Effect * >(*i);
o->show();
// Don't show old effects
if (!(oflags & UPDATEFLAG_NEW_ON_MAP))
break;
Being *b = o->getBeing();
if (b)
{
MessageOut effectMsg(GPMSG_CREATE_EFFECT_BEING);
effectMsg.writeInt16(o->getEffectId());
effectMsg.writeInt16(b->getPublicID());
gameHandler->sendTo(p, effectMsg);
} else {
MessageOut effectMsg(GPMSG_CREATE_EFFECT_POS);
effectMsg.writeInt16(o->getEffectId());
effectMsg.writeInt16(opos.x);
effectMsg.writeInt16(opos.y);
gameHandler->sendTo(p, effectMsg);
}
}
break;
default: break;
} // Switch
}
}
// Do not send a packet if nothing happened in p's range.
if (itemMsg.getLength() > 2)
gameHandler->sendTo(p, itemMsg);
}
#ifndef NDEBUG
static bool dbgLockObjects;
#endif
void GameState::update(int worldTime)
{
# ifndef NDEBUG
dbgLockObjects = true;
# endif
// Update game state (update AI, etc.)
const MapManager::Maps &maps = MapManager::getMaps();
for (MapManager::Maps::const_iterator m = maps.begin(), m_end = maps.end(); m != m_end; ++m)
{
MapComposite *map = m->second;
if (!map->isActive())
{
continue;
}
updateMap(map);
for (CharacterIterator p(map->getWholeMapIterator()); p; ++p)
{
informPlayer(map, *p, worldTime);
/*
sending the whole character is overhead for the database, it should
be replaced by a syncbuffer. see: game-server/accountconnection:
AccountConnection::syncChanges()
if (worldTime % 2000 == 0)
{
accountHandler->sendCharacterData(*p);
}
*/
}
for (ActorIterator i(map->getWholeMapIterator()); i; ++i)
{
Actor *a = *i;
a->clearUpdateFlags();
if (a->canFight())
{
static_cast< Being * >(a)->clearHitsTaken();
}
}
}
# ifndef NDEBUG
dbgLockObjects = false;
# endif
// Take care of events that were delayed because of their side effects.
for (DelayedEvents::iterator i = delayedEvents.begin(),
i_end = delayedEvents.end(); i != i_end; ++i)
{
const DelayedEvent &e = i->second;
Actor *o = i->first;
switch (e.type)
{
case EVENT_REMOVE:
remove(o);
if (o->getType() == OBJECT_CHARACTER)
{
Character *ch = static_cast< Character * >(o);
ch->disconnected();
gameHandler->kill(ch);
}
delete o;
break;
case EVENT_INSERT:
insertOrDelete(o);
break;
case EVENT_WARP:
assert(o->getType() == OBJECT_CHARACTER);
warp(static_cast< Character * >(o), e.map, e.x, e.y);
break;
}
}
delayedEvents.clear();
}
bool GameState::insert(Thing *ptr)
{
assert(!dbgLockObjects);
MapComposite *map = ptr->getMap();
assert(map && map->isActive());
/* Non-visible objects have neither position nor public ID, so their
insertion cannot fail. Take care of them first. */
if (!ptr->isVisible())
{
map->insert(ptr);
ptr->inserted();
return true;
}
// Check that coordinates are actually valid.
Actor *obj = static_cast< Actor * >(ptr);
Map *mp = map->getMap();
Point pos = obj->getPosition();
if ((int)pos.x / mp->getTileWidth() >= mp->getWidth() ||
(int)pos.y / mp->getTileHeight() >= mp->getHeight())
{
LOG_ERROR("Tried to insert an actor at position " << pos.x << ','
<< pos.y << " outside map " << map->getID() << '.');
// Set an arbitrary small position.
pos = Point(100, 100);
obj->setPosition(pos);
}
if (!map->insert(obj))
{
// The map is overloaded, no room to add a new actor
LOG_ERROR("Too many actors on map " << map->getID() << '.');
return false;
}
obj->inserted();
// DEBUG INFO
switch (obj->getType())
{
case OBJECT_ITEM:
LOG_DEBUG("Item inserted: "
<< static_cast<Item*>(obj)->getItemClass()->getDatabaseID());
break;
case OBJECT_NPC:
LOG_DEBUG("NPC inserted: " << static_cast<NPC*>(obj)->getNPC());
break;
case OBJECT_CHARACTER:
LOG_DEBUG("Player inserted: "
<< static_cast<Being*>(obj)->getName());
break;
case OBJECT_EFFECT:
LOG_DEBUG("Effect inserted: "
<< static_cast<Effect*>(obj)->getEffectId());
break;
case OBJECT_MONSTER:
LOG_DEBUG("Monster inserted: "
<< static_cast<Monster*>(obj)->getSpecy()->getId());
break;
case OBJECT_ACTOR:
case OBJECT_OTHER:
default:
LOG_DEBUG("Thing inserted: " << obj->getType());
}
obj->raiseUpdateFlags(UPDATEFLAG_NEW_ON_MAP);
if (obj->getType() != OBJECT_CHARACTER)
return true;
/* Since the player does not know yet where in the world its character is,
we send a map-change message, even if it is the first time it
connects to this server. */
MessageOut mapChangeMessage(GPMSG_PLAYER_MAP_CHANGE);
mapChangeMessage.writeString(map->getName());
mapChangeMessage.writeInt16(pos.x);
mapChangeMessage.writeInt16(pos.y);
gameHandler->sendTo(static_cast< Character * >(obj), mapChangeMessage);
// update the online state of the character
accountHandler->updateOnlineStatus(
static_cast< Character * >(obj)->getDatabaseID(), true);
return true;
}
bool GameState::insertOrDelete(Thing *ptr)
{
if (insert(ptr)) return true;
delete ptr;
return false;
}
void GameState::remove(Thing *ptr)
{
assert(!dbgLockObjects);
MapComposite *map = ptr->getMap();
int visualRange = Configuration::getValue("game_visualRange", 448);
ptr->removed();
// DEBUG INFO
switch (ptr->getType())
{
case OBJECT_ITEM:
LOG_DEBUG("Item removed: "
<< static_cast<Item*>(ptr)->getItemClass()->getDatabaseID());
break;
case OBJECT_NPC:
LOG_DEBUG("NPC removed: " << static_cast<NPC*>(ptr)->getNPC());
break;
case OBJECT_CHARACTER:
LOG_DEBUG("Player removed: "
<< static_cast<Being*>(ptr)->getName());
break;
case OBJECT_EFFECT:
LOG_DEBUG("Effect removed: "
<< static_cast<Effect*>(ptr)->getEffectId());
break;
case OBJECT_MONSTER:
LOG_DEBUG("Monster removed: "
<< static_cast<Monster*>(ptr)->getSpecy()->getId());
break;
case OBJECT_ACTOR:
case OBJECT_OTHER:
default:
LOG_DEBUG("Thing removed: " << ptr->getType());
}
if (ptr->canMove())
{
if (ptr->getType() == OBJECT_CHARACTER)
{
static_cast< Character * >(ptr)->cancelTransaction();
// remove characters online status
accountHandler->updateOnlineStatus(
static_cast< Character * >(ptr)->getDatabaseID(), false);
}
Actor *obj = static_cast< Actor * >(ptr);
MessageOut msg(GPMSG_BEING_LEAVE);
msg.writeInt16(obj->getPublicID());
Point objectPos = obj->getPosition();
for (CharacterIterator p(map->getAroundActorIterator(obj, visualRange));
p; ++p)
{
if (*p != obj && objectPos.inRangeOf((*p)->getPosition(),
visualRange))
{
gameHandler->sendTo(*p, msg);
}
}
}
else if (ptr->getType() == OBJECT_ITEM)
{
Item *obj = static_cast< Item * >(ptr);
Point pos = obj->getPosition();
MessageOut msg(GPMSG_ITEMS);
msg.writeInt16(0);
msg.writeInt16(pos.x);
msg.writeInt16(pos.y);
for (CharacterIterator p(map->getAroundActorIterator(obj, visualRange)); p; ++p)
{
if (pos.inRangeOf((*p)->getPosition(), visualRange))
{
gameHandler->sendTo(*p, msg);
}
}
}
map->remove(ptr);
}
void GameState::warp(Character *ptr, MapComposite *map, int x, int y)
{
remove(ptr);
ptr->setMap(map);
ptr->setPosition(Point(x, y));
ptr->clearDestination();
/* Force update of persistent data on map change, so that
characters can respawn at the start of the map after a death or
a disconnection. */
accountHandler->sendCharacterData(ptr);
if (map->isActive())
{
if (!insert(ptr))
{
ptr->disconnected();
gameHandler->kill(ptr);
delete ptr;
}
}
else
{
MessageOut msg(GAMSG_REDIRECT);
msg.writeInt32(ptr->getDatabaseID());
accountHandler->send(msg);
gameHandler->prepareServerChange(ptr);
}
}
/**
* Enqueues an event. It will be executed at end of update.
*/
static void enqueueEvent(Actor *ptr, const DelayedEvent &e)
{
std::pair< DelayedEvents::iterator, bool > p =
delayedEvents.insert(std::make_pair(ptr, e));
// Delete events take precedence over other events.
if (!p.second && e.type == EVENT_REMOVE)
{
p.first->second.type = EVENT_REMOVE;
}
}
void GameState::enqueueInsert(Actor *ptr)
{
DelayedEvent e = { EVENT_INSERT, 0, 0, 0 };
enqueueEvent(ptr, e);
}
void GameState::enqueueRemove(Actor *ptr)
{
DelayedEvent e = { EVENT_REMOVE, 0, 0, 0 };
enqueueEvent(ptr, e);
}
void GameState::enqueueWarp(Character *ptr, MapComposite *m, int x, int y)
{
DelayedEvent e = { EVENT_WARP, x, y, m };
enqueueEvent(ptr, e);
}
void GameState::sayAround(Actor *obj, const std::string &text)
{
Point speakerPosition = obj->getPosition();
int visualRange = Configuration::getValue("game_visualRange", 448);
for (CharacterIterator i(obj->getMap()->getAroundActorIterator(obj, visualRange)); i; ++i)
{
if (speakerPosition.inRangeOf((*i)->getPosition(), visualRange))
{
sayTo(*i, obj, text);
}
}
}
void GameState::sayTo(Actor *destination, Actor *source, const std::string &text)
{
if (destination->getType() != OBJECT_CHARACTER)
return; //only characters will read it anyway
MessageOut msg(GPMSG_SAY);
if (source == NULL)
{
msg.writeInt16(0);
}
else if (!source->canMove())
{
msg.writeInt16(65535);
}
else
{
msg.writeInt16(static_cast< Actor * >(source)->getPublicID());
}
msg.writeString(text);
gameHandler->sendTo(static_cast< Character * >(destination), msg);
}
void GameState::sayToAll(const std::string &text)
{
MessageOut msg(GPMSG_SAY);
// The message will be shown as if it was from the server
msg.writeInt16(0);
msg.writeString(text);
// Sends it to everyone connected to the game server
gameHandler->sendToEveryone(msg);
}
std::string GameState::getVariable(const std::string &key)
{
std::map<std::string, std::string>::iterator iValue =
mScriptVariables.find(key);
if (iValue != mScriptVariables.end())
return iValue->second;
else
return std::string();
}
void GameState::setVariable(const std::string &key, const std::string &value)
{
mScriptVariables[key] = value;
accountHandler->updateWorldVar(key, value);
}
void GameState::setVariableFromDbserver(const std::string &key,
const std::string &value)
{
mScriptVariables[key] = value ;
}
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