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khanat-opennel-code/code/snowballs2/server/collision/src/collision_service.cpp

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// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
// Copyright (C) 2010 Winch Gate Property Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "collision_service.h"
#include <nel/3d/u_instance_group.h>
using namespace SBSERVICE;
using namespace NLMISC;
using namespace NLNET;
using namespace NLPACS;
using namespace std;
//////////////////////////////////////////////////////////////////////////////
/// ///
/// VARIABLES ///
/// ///
//////////////////////////////////////////////////////////////////////////////
CCollisionService::CClientMap CCollisionService::_Clients;
NLPACS::URetrieverBank *CCollisionService::_RetrieverBank;
NLPACS::UGlobalRetriever *CCollisionService::_GlobalRetriever;
NLPACS::UMoveContainer *CCollisionService::_MoveContainer;
CCollisionService::CMovePrimitiveVector CCollisionService::_StaticMovePrimitives;
TTime CCollisionService::_LastTime, CCollisionService::_NewTime, CCollisionService::_DiffTime;
double CCollisionService::_DiffTimeSeconds;
float CCollisionService::_DiffTimeFloat;
//////////////////////////////////////////////////////////////////////////////
/// ///
/// BASIC FUNCTIONS ///
/// ///
//////////////////////////////////////////////////////////////////////////////
void CCollisionService::commandStart()
{
}
void CCollisionService::init()
{
// set down callback
CUnifiedNetwork::getInstance()->setServiceDownCallback("*", cbDown);
// set the data path
CPath::addSearchPath(ConfigFile.getVar("DataPath").asString(), true, false);
// init the global retriever, the retriever bank, and the move container
_RetrieverBank = URetrieverBank::createRetrieverBank(ConfigFile.getVar("RetrieverBankName").asString().c_str());
_GlobalRetriever = UGlobalRetriever::createGlobalRetriever(ConfigFile.getVar("GlobalRetrieverName").asString().c_str(), _RetrieverBank);
_MoveContainer = UMoveContainer::createMoveContainer(_GlobalRetriever, 100, 100, 6.0);
// some silly snowballs specific code to load static instance groups, redo
CConfigFile::CVar igv = ConfigFile.getVar("InstanceGroups");
for (uint i = 0; i < igv.size(); ++i)
{
NL3D::UInstanceGroup *ig = NL3D::UInstanceGroup::createInstanceGroup(igv.asString(i));
if (ig == NULL) nlwarning("Instance group '%s' not found", igv.asString(i).c_str());
else
{
for (uint i = 0; i < ig->getNumInstance(); ++i)
{
UMovePrimitive *primitive = _MoveContainer->addCollisionablePrimitive(0, 1);
primitive->setPrimitiveType(UMovePrimitive::_2DOrientedCylinder);
primitive->setReactionType(UMovePrimitive::DoNothing);
primitive->setTriggerType(UMovePrimitive::NotATrigger);
primitive->setCollisionMask(2);
primitive->setOcclusionMask(1);
primitive->setObstacle(true);
string name = ig->getShapeName(i);
float rad;
if (strlwr(name) == "pi_po_igloo_a") rad = 4.5f;
else if (strlwr(name) == "pi_po_snowman_a") rad = 1.0f;
else if (strlwr(name) == "pi_po_pinetree_a") rad = 2.0f;
else if (strlwr(name) == "pi_po_tree_a") rad = 2.0f;
else if (strlwr(name) == "pi_po_pingoo_stat_a") rad = 1.0f;
else if (strlwr(name) == "pi_po_gnu_stat_a") rad = 1.0f;
else
{
rad = 2.0f;
nlwarning ("Instance name '%s' doesn't have a good radius for collision", name.c_str());
}
primitive->setRadius(rad);
primitive->setHeight(6.0f);
primitive->insertInWorldImage(0);
CVector pos = ig->getInstancePos(i);
primitive->setGlobalPosition(CVectorD(pos.x, pos.y, pos.z - 1.5f), 0);
_StaticMovePrimitives.push_back(primitive);
}
}
delete ig;
}
_NewTime = CTime::getLocalTime();
}
bool CCollisionService::update()
{
_LastTime = _NewTime;
_NewTime = CTime::getLocalTime();
_DiffTime = _NewTime - _LastTime;
_DiffTimeSeconds = (double)_DiffTime / 1000.0;
_DiffTimeFloat = (float)_DiffTimeSeconds;
for (CClientMap::iterator it = _Clients.begin(); it != _Clients.end(); it++)
for (CEntityMap::iterator it2 = it->second.begin(); it2 != it->second.end(); it2++)
{
CEntity &entity = it2->second;
if (entity.Moving)
{
// nldebug("entity.Moving");
CVector movement = entity.NewClientPosition - entity.OldClientPosition;
entity.Distance = movement.norm();
if (entity.Distance == 0.0f)
{
entity.Moving = false;
entity.Retry = false;
}
CVectorD speed = CVectorD(movement) / _DiffTimeSeconds;
entity.MovePrimitive->move(speed, 0);
}
// else nldebug("!entity.Moving");
}
// apparently this thingy does the collision checks
_MoveContainer->evalCollision(_DiffTimeSeconds, 0);
// check all wrong stuff (use some different way maybe)
for (CClientMap::iterator it = _Clients.begin(); it != _Clients.end(); it++)
for (CEntityMap::iterator it2 = it->second.begin(); it2 != it->second.end(); it2++)
{
CEntity &entity = it2->second;
if (entity.Moving)
{
UGlobalPosition globalPosition;
entity.MovePrimitive->getGlobalPosition(globalPosition, 0);
CVector serverPosition = _GlobalRetriever->getGlobalPosition(globalPosition);
//nlinfo("clientPosition: %f %f %f", entity.NewClientPosition.x, entity.NewClientPosition.y, entity.NewClientPosition.z);
//nlinfo("serverPosition: %f %f %f", serverPosition.x, serverPosition.y, serverPosition.z);
// Allow the difference between the external client position and the
// local server position to be up to half of the traveled distance
// plus the entity's height or radius, twice (using Retry).
float allowedDifference = entity.Distance * 0.5f;
bool move = false;
if (abs(entity.NewClientPosition.z - serverPosition.z) > 1.0f + allowedDifference)
{
move = true;
}
else
{
// fake server position has same z as client position if ok
serverPosition.z = entity.NewClientPosition.z;
if ((serverPosition - entity.NewClientPosition).norm() > entity.MovePrimitive->getRadius() + allowedDifference)
move = true;
}
if (move) // Entity moved incorrectly.
{
if (entity.Retry) // If second try.
{
nldebug("entity.Retry");
msgPosition(it2->first, serverPosition);
}
else nldebug("!entity.Retry");
entity.Retry = !entity.Retry; // Else the entity gets one more chance.
}
// The difference to the new position must be from local server position.
entity.OldClientPosition = serverPosition;
}
}
msgUpdate();
return true;
}
void CCollisionService::release()
{
}
//////////////////////////////////////////////////////////////////////////////
/// ///
/// OTHER FUNCTIONS ///
/// ///
//////////////////////////////////////////////////////////////////////////////
void CCollisionService::sendMessage(CMessage &msgout)
{
CUnifiedNetwork *instance = CUnifiedNetwork::getInstance();
for (CClientMap::iterator it = _Clients.begin(); it != _Clients.end(); it++)
CUnifiedNetwork::getInstance()->send(TServiceId(it->first), msgout);
}
//////////////////////////////////////////////////////////////////////////////
/// ///
/// MESSAGE SENDERS ///
/// ///
//////////////////////////////////////////////////////////////////////////////
/****************************************************************************
* Function: msgUpdate
* Send CLS_UPDATE message to registered services
*
* Arguments:
****************************************************************************/
void CCollisionService::msgUpdate()
{
if (!_Clients.size()) return;
static CMessage msgout("CLS_UPDATE");
sendMessage(msgout);
//nldebug("Sent CLS_UPDATE to %u services", _Clients.size());
}
/****************************************************************************
* Function: msgPosition
* Send CLS_POSITION message to registered services
*
* Arguments:
* - id: entity id
* - position: new position
****************************************************************************/
void CCollisionService::msgPosition(uint32 id, CVector position)
{
if (!_Clients.size()) return;
CMessage msgout("CLS_POSITION");
msgout.serial(id, position);
sendMessage(msgout);
nldebug("Sent CLS_POSITION %u %f %f %f to %u services", id, position.x, position.y, position.z, _Clients.size());
}
//////////////////////////////////////////////////////////////////////////////
/// ///
/// MESSAGE CALLBACKS ///
/// ///
//////////////////////////////////////////////////////////////////////////////
/****************************************************************************
* Function: cbAdd
* Receives an "ADD" message.
****************************************************************************/
void CCollisionService::cbAdd(CMessage &msgin, const std::string &serviceName, TServiceId sid)
{
// Read incoming message
uint32 id;
CVector position;
float radius;
msgin.serial(id, position, radius);
nldebug("Received ADD %u %f %f %f %f", id, position.x, position.y, position.z, radius);
// Do something with it
CEntity &entity = _Clients[sid.get()][id] = CEntity();
entity.OldClientPosition = position;
entity.NewClientPosition = position;
entity.MovePrimitive = _MoveContainer->addCollisionablePrimitive(0, 1);
entity.MovePrimitive->setPrimitiveType(UMovePrimitive::_2DOrientedCylinder);
entity.MovePrimitive->setReactionType(UMovePrimitive::Slide);
entity.MovePrimitive->setTriggerType(UMovePrimitive::NotATrigger);
entity.MovePrimitive->setCollisionMask(3);
entity.MovePrimitive->setOcclusionMask(2);
entity.MovePrimitive->setObstacle(true);
entity.MovePrimitive->setRadius(radius);
entity.MovePrimitive->setHeight(1.8f);
entity.MovePrimitive->insertInWorldImage(0);
entity.MovePrimitive->setGlobalPosition(position, 0);
}
/****************************************************************************
* Function: cbMove
* Receives a "MOVE" message.
****************************************************************************/
void CCollisionService::cbMove(CMessage &msgin, const std::string &serviceName, TServiceId sid)
{
// Read incoming message
uint32 id;
CVector position;
msgin.serial(id, position);
// nldebug("Received MOVE %u %f %f %f", id, position.x, position.y, position.z);
// Do something with it
CEntity &entity = _Clients[sid.get()][id];
entity.NewClientPosition = position;
if (entity.OldClientPosition != position)
entity.Moving = true;
}
/****************************************************************************
* Function: cbRemove
* Receives a "REMOVE" message.
****************************************************************************/
void CCollisionService::cbRemove(CMessage &msgin, const std::string &serviceName, TServiceId sid)
{
// Read incoming message
uint32 id;
msgin.serial(id);
nldebug("Received REMOVE %u", id);
// Do something with it
if (_Clients[sid.get()].find(id) == _Clients[sid.get()].end())
{
nlwarning("Unknown entity %u", id);
return;
}
CEntity &entity = _Clients[sid.get()][id];
_MoveContainer->removePrimitive(entity.MovePrimitive);
_Clients[sid.get()].erase(id);
}
/****************************************************************************
* Function: cbRegister
* Receives a "REGISTER" message.
****************************************************************************/
void CCollisionService::cbRegister(CMessage &msgin, const std::string &serviceName, TServiceId sid)
{
// Read incoming message
nldebug("Received REGISTER %s %s", serviceName.c_str(), sid.toString().c_str());
// Do something with it
_Clients[sid.get()] = CEntityMap();
}
//////////////////////////////////////////////////////////////////////////////
/// ///
/// NETWORK CALLBACKS ///
/// ///
//////////////////////////////////////////////////////////////////////////////
/****************************************************************************
* Function: cbDown
* Called when a registered service goes down
****************************************************************************/
void CCollisionService::cbDown(const string &serviceName, TServiceId sid, void *arg)
{
CClientMap::iterator it = _Clients.find(sid.get());
if (it != _Clients.end())
{
// remove all entities
for (CEntityMap::iterator it2 = it->second.begin(); it2 != it->second.end(); it2++)
_MoveContainer->removePrimitive(it2->second.MovePrimitive);
// erase the client
_Clients.erase(it);
}
}
//////////////////////////////////////////////////////////////////////////////
/// ///
/// SERVICE CONFIGURATION ///
/// ///
//////////////////////////////////////////////////////////////////////////////
/****************************************************************************
* CallbackArray
*
* It define the functions to call when receiving a specific message
****************************************************************************/
TUnifiedCallbackItem CallbackArray[] =
{
{ "REGISTER", CCollisionService::cbRegister },
{ "ADD", CCollisionService::cbAdd },
{ "MOVE", CCollisionService::cbMove },
{ "REMOVE", CCollisionService::cbRemove },
};
/****************************************************************************
* SNOWBALLS COLLISION SERVICE MAIN Function
*
* This call create a main function for the world_service:
*
* - based on the service class CCollisionService inherited from IService
* - having the short name "CLS"
* - having the long name "collision_service"
* - listening on an automatically allocated port (0) by the naming service
* - and callback actions set to "CallbackArray"
*
****************************************************************************/
NLNET_SERVICE_MAIN(CCollisionService, "CLS", "collision_service", 0, CallbackArray, "", "")
/* end of file */
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