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503 lines
10 KiB
C++
503 lines
10 KiB
C++
// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef NL_TRACK_H
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#define NL_TRACK_H
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#include "nel/misc/types_nl.h"
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#include "nel/misc/smart_ptr.h"
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#include "nel/misc/vector.h"
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#include "nel/misc/vectord.h"
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#include "nel/misc/entity_id.h"
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#include "nel/misc/sheet_id.h"
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#include "nel/pacs/u_move_container.h"
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#include "nel/pacs/u_move_primitive.h"
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#include "nel/georges/u_form.h"
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#include "nel/georges/u_form_elm.h"
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/**
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* The base class for moving entity
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* \author Benjamin Legros
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* \author Nevrax France
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* \date 2002
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*/
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class CTrackBase
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{
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public:
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/// State type
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enum TTrackState
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{
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Idle = 0, // not controlled yet
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MovingTowardsTarget, // first step of motion, moving towards target
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TargetLocked, // close to target, locked
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TargetLost, // target moved away, can't reach it any longer
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TargetUnreachable // can't reach target, too far or too many obstacles on the way
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};
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/// Get Id
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virtual const NLMISC::CEntityId &getId() const = 0;
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/// Get SheetId
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virtual const NLMISC::CSheetId &getSheetId() const = 0;
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/// Has Id ?
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virtual bool hasId() const = 0;
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/// Get track Position
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virtual void getPosition(NLMISC::CVectorD &pos, float &heading) const = 0;
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/// Has Position ?
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virtual bool hasPosition() const = 0;
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/// Set user data
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virtual void setUserData(void *data) = 0;
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/// Get user data
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virtual void *getUserData() = 0;
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/// Get Track state
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virtual TTrackState getTrackState() const = 0;
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};
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/**
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* A track that represents a moving point
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* \author Benjamin Legros
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* \author Nevrax France
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* \date 2002
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*/
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class CTrack : public CTrackBase, public NLMISC::CRefCount
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{
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public:
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/**
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* The sheet type read by Georges
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*/
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class CSheet
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{
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public:
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CSheet(): WalkSpeed(1.3f), RunSpeed(6.0f), Radius(0.5f), Height(2.0f), Length(1.0), Width(1.0) {}
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/// The Walk speed of the entity
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float WalkSpeed;
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/// The Run speed of the entity
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float RunSpeed;
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/// The Pacs radius of the entity
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float Radius;
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/// The Height radius of the entity
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float Height;
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/// The Animation length of the entity
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float Length;
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/// The Width length of the entity
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float Width;
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void readGeorges (const NLMISC::CSmartPtr<NLGEORGES::UForm> &form, const NLMISC::CSheetId &sheetId)
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{
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// the form was found so read the true values from George
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form->getRootNode ().getValueByName (WalkSpeed, "Basics.MovementSpeeds.WalkSpeed");
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form->getRootNode ().getValueByName (RunSpeed, "Basics.MovementSpeeds.RunSpeed");
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form->getRootNode ().getValueByName (Radius, "Collision.CollisionRadius");
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form->getRootNode ().getValueByName (Height, "Collision.Height");
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form->getRootNode ().getValueByName (Width, "Collision.Width");
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form->getRootNode ().getValueByName (Length, "Collision.Length");
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}
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void serial (NLMISC::IStream &s)
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{
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s.serial (WalkSpeed, RunSpeed);
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s.serial (Radius, Height);
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s.serial (Length, Width);
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}
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static uint getVersion () { return 1; }
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/// The default sheet
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static CSheet DefaultSheet;
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};
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public:
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/// Constructor
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CTrack() : _OwnControl(NULL), _MoveContainer(NULL), _MovePrimitive(NULL),
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_Id(NLMISC::CEntityId::Unknown), _SheetId(NLMISC::CSheetId::Unknown), _Sheet(NULL), _Followed(NULL),
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_HasPosition(false), _HasId(false), _IdRequested(false), _PositionUpdatesRequested(false), _IsStatic(false),
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_ForceRelease(false), _ReceiveVision(false), _UserData(NULL), _State(Idle),
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_SmoothedTargetDistanceDelta(3.0), _LastTargetDistance(-1.0)
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{
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}
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/// Destructor
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~CTrack();
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/// Init track
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void setId(const NLMISC::CEntityId &id, const NLMISC::CSheetId &sheet);
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/// Get Id
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const NLMISC::CEntityId &getId() const
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{
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return _Id;
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}
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/// Get SheetId
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const NLMISC::CSheetId &getSheetId() const
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{
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return _SheetId;
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}
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/// Get SheetId
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const CSheet *getSheet() const
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{
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return _Sheet;
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}
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/// Has Id ?
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bool hasId() const
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{
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return _HasId;
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}
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/// Update track position
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void setPosition(const NLMISC::CVectorD &pos, float heading)
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{
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// don't allow more than one position to be set when control is owned
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if (_HasPosition && _OwnControl)
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return;
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_Position = pos;
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_Heading = heading;
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_HasPosition = true;
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}
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/// Get track Position
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void getPosition(NLMISC::CVectorD &pos, float &heading) const
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{
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if (_HasPosition)
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{
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pos = _Position;
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heading = _Heading;
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}
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else
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{
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nlwarning("ReynoldsLib:CTrack:getPosition(): Track %s position not yet set", _Id.toString().c_str());
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}
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}
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/// Set Static state
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void setStatic(bool isstatic = true)
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{
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_IsStatic = isstatic;
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}
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/// Has Control Owned ?
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bool hasControlOwned() const
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{
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return _OwnControl;
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}
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/// Has Position ?
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bool hasPosition() const
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{
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return _HasPosition;
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}
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/// Invalid position
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void invalidPosition()
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{
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_HasPosition = false;
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}
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/// Is static ?
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bool isStatic() const
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{
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return _IsStatic;
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}
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/// Follow
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void follow(CTrack *followed);
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/// Leave
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void leave();
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/// Update
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void update(double dt);
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/// Update vision
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void updateVision(const std::vector<NLMISC::CEntityId> &in, const std::vector<NLMISC::CEntityId> &out);
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/// Update vision
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void updateVision(const std::vector<NLMISC::CEntityId> &vision);
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/// Force release
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void forceRelease() { _ForceRelease = true; }
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/// Get current state
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TTrackState getTrackState() const { return _State; }
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/// Set user data
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void setUserData(void *data) { _UserData = data; }
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/// Get user data
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void *getUserData() { return _UserData; }
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/// Get contact distance
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double rawDistance(const CTrack *other, NLMISC::CVectorD &distance) const
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{
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distance = other->_Position - _Position;
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distance.z = 0.0;
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return distance.norm();
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}
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/// Get contact distance
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double contactDistance(const CTrack *other, NLMISC::CVectorD &distance, double &rawdistance) const
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{
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rawdistance = rawDistance(other, distance);
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return contactDistanceWithRawDistance(other, distance, rawdistance);
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}
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/// Get contact distance
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double contactDistanceWithRawDistance(const CTrack *other, NLMISC::CVectorD &distance, double &rawdistance) const
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{
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double theta = atan2(distance.y, distance.x);
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double theta1 = _Heading - theta;
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double theta2 = other->_Heading - theta + 3.1415926535;
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float l1 = _Sheet->Length,
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w1 = _Sheet->Width;
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float l2 = other->_Sheet->Length,
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w2 = other->_Sheet->Width;
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double r1 = 0.5 * sqrt( l1*l1 + (w1*w1-l1*l1)*NLMISC::sqr(sin(theta1)) );
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double r2 = 0.5 * sqrt( l2*l2 + (w2*w2-l2*l2)*NLMISC::sqr(sin(theta2)) );
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return rawdistance - r1 - r2;
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}
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protected:
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/// Own Control
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void acquireControl();
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/// Release Control
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void releaseControl();
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/// Acquire vision
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void acquireVision();
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/// Release vision
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void releaseVision();
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/// Create Move primitive
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void createMovePrimitive();
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/// Delete Move primitive
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void deleteMovePrimitive();
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/// Check has position (ask for it if necessary)
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bool isValid()
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{
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if (!hasId())
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return false;
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if (!hasPosition())
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{
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if (!hasControlOwned() && !_PositionUpdatesRequested)
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requestPositionUpdates();
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return false;
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}
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return true;
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}
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/// Request Id
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void requestId();
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/// Request Position
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void requestPositionUpdates();
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protected:
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/// @name Track Id
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//@{
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/// Has Id
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bool _HasId;
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/// Id Requested
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bool _IdRequested;
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/// Entity Id
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NLMISC::CEntityId _Id;
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/// Sheet Id
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NLMISC::CSheetId _SheetId;
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/// Sheet
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const CSheet *_Sheet;
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/// Is static
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bool _IsStatic;
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//@}
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/// @name Track Position Control
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//@{
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/// Own control
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bool _OwnControl;
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/// Has Position
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bool _HasPosition;
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/// Id Requested
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bool _PositionUpdatesRequested;
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/// Position
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NLMISC::CVectorD _Position;
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/// Heading
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float _Heading;
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/// Followed track
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NLMISC::CSmartPtr<CTrack> _Followed;
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//@}
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/// @name Track PACS
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//@{
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/// Move Container
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NLPACS::UMoveContainer *_MoveContainer;
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/// Move Primitive
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NLPACS::UMovePrimitive *_MovePrimitive;
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//@}
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/// @name Misc
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//@{
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/// Force release
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bool _ForceRelease;
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/// Vision container
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typedef std::map<NLMISC::CEntityId, NLMISC::CSmartPtr<CTrack> > TVision;
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/// Vision
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TVision _Vision;
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/// Receive vision
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bool _ReceiveVision;
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/// User data
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void *_UserData;
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/// Track state
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TTrackState _State;
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/// Last move cycle
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uint32 _LastMoveCycle;
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/// Last target distance
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double _LastTargetDistance;
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/// Smoothed target distance
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double _SmoothedTargetDistanceDelta;
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//@}
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public:
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/// @name Target attraction control
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//@{
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/// Required target spacing
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static double TargetSpacing;
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/// Target attraction strength
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static double TargetAttraction;
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/// Target attraction amplification
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static double TargetAmp;
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//@}
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/// @name Obstacle repulsion control
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//@{
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/// Fast obstacle exclusion distance
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static double ObstacleExcludeDistance;
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/// Required obstacle spacing
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static double ObstacleSpacing;
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/// Obstacle repulsion strength
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static double ObstacleRepulsion;
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/// Obstacle repulsion amplification
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static double ObstacleAmp;
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//@}
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/// @name Track motion control
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//@{
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/// Minimum motion distance
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static double MinimumMotion;
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/// Lock distance threshold
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static double LockThreshold;
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/// Lose distance threshold
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static double LoseThreshold;
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/// Stabilise cycle
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static uint32 StabiliseCycle;
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//@}
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};
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#endif // NL_TRACK_H
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/* End of track.h */
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