MovementInfo.h

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/*
 * This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
 *
 * This program 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 (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 General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef MovementInfo_h__
#define MovementInfo_h__
 
#include "ObjectGuid.h"
#include "Optional.h"
#include "Position.h"
#include <algorithm>
#include <vector>
 
struct MovementInfo
{
 // common
 ObjectGuid guid;
 uint32 flags;
 uint32 flags2;
 uint32 flags3;
 Position pos;
 uint32 time;
 
 // transport
 struct TransportInfo
 {
 void Reset()
 {
 guid.Clear();
 pos.Relocate(0.0f, 0.0f, 0.0f, 0.0f);
 seat = -1;
 time = 0;
 prevTime = 0;
 vehicleId = 0;
 }
 
 ObjectGuid guid;
 Position pos;
 int8 seat;
 uint32 time;
 uint32 prevTime;
 uint32 vehicleId;
 } transport;
 
 // swimming/flying
 float pitch;
 
 struct Inertia
 {
 Inertia() : id(0), lifetime(0) { }
 
 int32 id;
 Position force;
 uint32 lifetime;
 };
 
 Optional<Inertia> inertia;
 
 // jumping
 struct JumpInfo
 {
 void Reset()
 {
 fallTime = 0;
 zspeed = sinAngle = cosAngle = xyspeed = 0.0f;
 }
 
 uint32 fallTime;
 
 float zspeed, sinAngle, cosAngle, xyspeed;
 
 } jump;
 
 float stepUpStartElevation;
 
 // advflying
 struct AdvFlying
 {
 float forwardVelocity;
 float upVelocity;
 };
 
 Optional<AdvFlying> advFlying;
 
 Optional<ObjectGuid> standingOnGameObjectGUID;
 
 MovementInfo() :
 flags(0), flags2(0), flags3(0), time(0), pitch(0.0f), stepUpStartElevation(0.0f)
 {
 pos.Relocate(0.0f, 0.0f, 0.0f, 0.0f);
 transport.Reset();
 jump.Reset();
 }
 
 uint32 GetMovementFlags() const { return flags; }
 void SetMovementFlags(uint32 flag) { flags = flag; }
 void AddMovementFlag(uint32 flag) { flags |= flag; }
 void RemoveMovementFlag(uint32 flag) { flags &= ~flag; }
 bool HasMovementFlag(uint32 flag) const { return (flags & flag) != 0; }
 
 uint32 GetExtraMovementFlags() const { return flags2; }
 void SetExtraMovementFlags(uint32 flag) { flags2 = flag; }
 void AddExtraMovementFlag(uint32 flag) { flags2 |= flag; }
 void RemoveExtraMovementFlag(uint32 flag) { flags2 &= ~flag; }
 bool HasExtraMovementFlag(uint32 flag) const { return (flags2 & flag) != 0; }
 
 uint32 GetExtraMovementFlags2() const { return flags3; }
 void SetExtraMovementFlags2(uint32 flag) { flags3 = flag; }
 void AddExtraMovementFlag2(uint32 flag) { flags3 |= flag; }
 void RemoveExtraMovementFlag2(uint32 flag) { flags3 &= ~flag; }
 bool HasExtraMovementFlag2(uint32 flag) const { return (flags3 & flag) != 0; }
 
 uint32 GetFallTime() const { return jump.fallTime; }
 void SetFallTime(uint32 fallTime) { jump.fallTime = fallTime; }
 
 void ResetTransport()
 {
 transport.Reset();
 }
 
 void ResetJump()
 {
 jump.Reset();
 }
 
 void OutDebug();
};
 
enum class MovementForceType : uint8
{
 SingleDirectional = 0, // always in a single direction
 Gravity = 1 // pushes/pulls away from a single point
};
 
struct MovementForce
{
 ObjectGuid ID;
 TaggedPosition<Position::XYZ> Origin;
 TaggedPosition<Position::XYZ> Direction;
 uint32 TransportID = 0;
 float Magnitude = 0.0f;
 MovementForceType Type = MovementForceType::SingleDirectional;
 int32 Unused910 = 0;
};
 
class MovementForces
{
public:
 using Container = std::vector<MovementForce>;
 
 Container const* GetForces() const { return &_forces; }
 bool Add(MovementForce const& newForce)
 {
 auto itr = FindMovementForce(newForce.ID);
 if (itr == _forces.end())
 {
 _forces.push_back(newForce);
 return true;
 }
 
 return false;
 }
 
 bool Remove(ObjectGuid id)
 {
 auto itr = FindMovementForce(id);
 if (itr != _forces.end())
 {
 _forces.erase(itr);
 return true;
 }
 
 return false;
 }
 
 float GetModMagnitude() const { return _modMagnitude; }
 void SetModMagnitude(float modMagnitude) { _modMagnitude = modMagnitude; }
 
 bool IsEmpty() const { return _forces.empty() && _modMagnitude == 1.0f; }
 
private:
 Container::iterator FindMovementForce(ObjectGuid id)
 {
 return std::find_if(_forces.begin(), _forces.end(), [id](MovementForce const& force) { return force.ID == id; });
 }
 
 Container _forces;
 float _modMagnitude = 1.0f;
};
 
#endif // MovementInfo_h__