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/**
* @file llpathfindingmanager.cpp
* @author William Todd Stinson
* @brief A state manager for the various pathfinding states.
*
* $LicenseInfo:firstyear=2002&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#include <string>
#include <boost/function.hpp>
#include "llviewerprecompiledheaders.h"
#include "llpathfindingmanager.h"
#include "llsingleton.h"
#include "llhttpclient.h"
#include "llagent.h"
#include "llviewerregion.h"
#define CAP_SERVICE_RETRIEVE_NAVMESH "RetrieveNavMeshSrc"
#define CAP_SERVICE_AGENT_STATE "AgentPreferences"
#define ALTER_PERMANENT_OBJECTS_FIELD "alter_permanent_objects"
//---------------------------------------------------------------------------
// AgentStateResponder
//---------------------------------------------------------------------------
class AgentStateResponder : public LLHTTPClient::Responder
{
public:
AgentStateResponder(LLPathfindingManager::agent_state_callback_t pAgentStateCB, const std::string &pCapabilityURL);
virtual ~AgentStateResponder();
virtual void result(const LLSD &pContent);
virtual void error(U32 pStatus, const std::string& pReason);
protected:
private:
LLPathfindingManager::agent_state_callback_t mAgentStateCB;
std::string mCapabilityURL;
};
//---------------------------------------------------------------------------
// LLPathfindingManager
//---------------------------------------------------------------------------
LLPathfindingManager::LLPathfindingManager()
{
}
LLPathfindingManager::~LLPathfindingManager()
{
}
bool LLPathfindingManager::isPathfindingEnabledForCurrentRegion() const
{
std::string retrieveNavMeshURL = getRetrieveNavMeshURLForCurrentRegion();
return !retrieveNavMeshURL.empty();
}
void LLPathfindingManager::requestGetAgentState(agent_state_callback_t pAgentStateCB) const
{
std::string agentStateURL = getAgentStateURLForCurrentRegion();
if (agentStateURL.empty())
{
pAgentStateCB(kAgentStateError);
}
else
{
LLHTTPClient::ResponderPtr responder = new AgentStateResponder(pAgentStateCB, agentStateURL);
LLHTTPClient::get(agentStateURL, responder);
}
}
void LLPathfindingManager::requestSetAgentState(EAgentState pAgentState, agent_state_callback_t pAgentStateCB) const
{
std::string agentStateURL = getAgentStateURLForCurrentRegion();
if (agentStateURL.empty())
{
pAgentStateCB(kAgentStateError);
}
else
{
LLSD request;
request[ALTER_PERMANENT_OBJECTS_FIELD] = static_cast<LLSD::Boolean>(pAgentState == kAgentStateUnfrozen);
LLHTTPClient::ResponderPtr responder = new AgentStateResponder(pAgentStateCB, agentStateURL);
LLHTTPClient::post(agentStateURL, request, responder);
}
}
void LLPathfindingManager::handleAgentStateResult(const LLSD &pContent, agent_state_callback_t pAgentStateCB) const
{
llassert(pContent.has(ALTER_PERMANENT_OBJECTS_FIELD));
llassert(pContent.get(ALTER_PERMANENT_OBJECTS_FIELD).isBoolean());
EAgentState agentState = (pContent.get(ALTER_PERMANENT_OBJECTS_FIELD).asBoolean() ? kAgentStateUnfrozen : kAgentStateFrozen);
pAgentStateCB(agentState);
}
void LLPathfindingManager::handleAgentStateError(U32 pStatus, const std::string &pReason, const std::string &pURL, agent_state_callback_t pAgentStateCB) const
{
llwarns << "error with request to URL '" << pURL << "' because " << pReason << " (statusCode:" << pStatus << ")" << llendl;
pAgentStateCB(kAgentStateError);
}
std::string LLPathfindingManager::getRetrieveNavMeshURLForCurrentRegion() const
{
return getCapabilityURLForCurrentRegion(CAP_SERVICE_RETRIEVE_NAVMESH);
}
std::string LLPathfindingManager::getAgentStateURLForCurrentRegion() const
{
return getCapabilityURLForCurrentRegion(CAP_SERVICE_AGENT_STATE);
}
std::string LLPathfindingManager::getCapabilityURLForCurrentRegion(const std::string &pCapabilityName) const
{
std::string capabilityURL("");
LLViewerRegion* region = gAgent.getRegion();
if (region != NULL)
{
capabilityURL = region->getCapability(pCapabilityName);
}
if (capabilityURL.empty())
{
llwarns << "cannot find capability '" << pCapabilityName << "' for current region '"
<< ((region != NULL) ? region->getName() : "<null>") << "'" << llendl;
}
return capabilityURL;
}
//---------------------------------------------------------------------------
// AgentStateResponder
//---------------------------------------------------------------------------
AgentStateResponder::AgentStateResponder(LLPathfindingManager::agent_state_callback_t pAgentStateCB, const std::string &pCapabilityURL)
: mAgentStateCB(pAgentStateCB),
mCapabilityURL(pCapabilityURL)
{
}
AgentStateResponder::~AgentStateResponder()
{
}
void AgentStateResponder::result(const LLSD &pContent)
{
LLPathfindingManager::getInstance()->handleAgentStateResult(pContent, mAgentStateCB);
}
void AgentStateResponder::error(U32 pStatus, const std::string &pReason)
{
LLPathfindingManager::getInstance()->handleAgentStateError(pStatus, pReason, mCapabilityURL, mAgentStateCB);
}
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