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https://github.com/mod-playerbots/azerothcore-wotlk.git
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First Commit
For Azeroth!
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Yehonal
201
src/server/game/Movement/Spline/MovementPacketBuilder.cpp
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201
src/server/game/Movement/Spline/MovementPacketBuilder.cpp
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/*
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* Copyright (C)
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* Copyright (C)
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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 General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "MovementPacketBuilder.h"
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#include "MoveSpline.h"
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#include "ByteBuffer.h"
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namespace Movement
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{
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inline void operator << (ByteBuffer& b, const Vector3& v)
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{
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b << v.x << v.y << v.z;
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}
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inline void operator >> (ByteBuffer& b, Vector3& v)
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{
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b >> v.x >> v.y >> v.z;
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}
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enum MonsterMoveType
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{
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MonsterMoveNormal = 0,
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MonsterMoveStop = 1,
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MonsterMoveFacingSpot = 2,
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MonsterMoveFacingTarget = 3,
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MonsterMoveFacingAngle = 4
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};
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void PacketBuilder::WriteCommonMonsterMovePart(const MoveSpline& move_spline, ByteBuffer& data)
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{
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MoveSplineFlag splineflags = move_spline.splineflags;
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data << uint8(0); // sets/unsets MOVEMENTFLAG2_UNK7 (0x40)
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data << move_spline.spline.getPoint(move_spline.spline.first(), true);
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data << move_spline.GetId();
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switch (splineflags & MoveSplineFlag::Mask_Final_Facing)
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{
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case MoveSplineFlag::Final_Target:
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data << uint8(MonsterMoveFacingTarget);
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data << move_spline.facing.target;
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break;
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case MoveSplineFlag::Final_Angle:
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data << uint8(MonsterMoveFacingAngle);
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data << move_spline.facing.angle;
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break;
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case MoveSplineFlag::Final_Point:
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data << uint8(MonsterMoveFacingSpot);
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data << move_spline.facing.f.x << move_spline.facing.f.y << move_spline.facing.f.z;
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break;
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default:
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data << uint8(MonsterMoveNormal);
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break;
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}
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// add fake Enter_Cycle flag - needed for client-side cyclic movement (client will erase first spline vertex after first cycle done)
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// Xinef: this flag breaks cycle for ground movement, client teleports npc between last and first point instead of using smooth movement
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if (splineflags & MoveSplineFlag::Flying)
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splineflags.enter_cycle = move_spline.isCyclic();
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data << uint32(splineflags & uint32(~MoveSplineFlag::Mask_No_Monster_Move));
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if (splineflags.animation)
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{
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data << splineflags.getAnimationId();
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data << move_spline.effect_start_time;
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}
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data << move_spline.Duration();
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if (splineflags.parabolic)
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{
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data << move_spline.vertical_acceleration;
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data << move_spline.effect_start_time;
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}
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}
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void PacketBuilder::WriteStopMovement(Vector3 const& pos, uint32 splineId, ByteBuffer& data)
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{
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data << uint8(0); // sets/unsets MOVEMENTFLAG2_UNK7 (0x40)
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data << pos;
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data << splineId;
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data << uint8(MonsterMoveStop);
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}
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void WriteLinearPath(const Spline<int32>& spline, ByteBuffer& data)
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{
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uint32 last_idx = spline.getPointCount() - 3;
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const Vector3 * real_path = &spline.getPoint(1, true);
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data << last_idx;
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data << real_path[last_idx]; // destination
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if (last_idx > 1)
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{
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Vector3 middle = (real_path[0] + real_path[last_idx]) / 2.f;
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Vector3 offset;
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// first and last points already appended
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for (uint32 i = 1; i < last_idx; ++i)
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{
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offset = middle - real_path[i];
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data.appendPackXYZ(offset.x, offset.y, offset.z);
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}
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}
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}
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void WriteCatmullRomPath(const Spline<int32>& spline, ByteBuffer& data)
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{
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uint32 count = spline.getPointCount() - 3;
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data << count;
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data.append<Vector3>(&spline.getPoint(2, true), count);
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}
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void WriteCatmullRomCyclicPath(const Spline<int32>& spline, ByteBuffer& data, bool flying)
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{
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uint32 count = spline.getPointCount() - 3;
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data << uint32(count+1);
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if (flying)
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{
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data << spline.getPoint(1, true); // fake point, client will erase it from the spline after first cycle done
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data.append<Vector3>(&spline.getPoint(2, true), count);
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}
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else
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{
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data.append<Vector3>(&spline.getPoint(2, true), count);
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data << Vector3::zero(); //Xinef: fake point
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}
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}
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void PacketBuilder::WriteMonsterMove(const MoveSpline& move_spline, ByteBuffer& data)
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{
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WriteCommonMonsterMovePart(move_spline, data);
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const Spline<int32>& spline = move_spline.spline;
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MoveSplineFlag splineflags = move_spline.splineflags;
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if (splineflags & MoveSplineFlag::Mask_CatmullRom)
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{
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if (splineflags.cyclic)
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WriteCatmullRomCyclicPath(spline, data, splineflags & MoveSplineFlag::Flying);
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else
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WriteCatmullRomPath(spline, data);
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}
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else
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WriteLinearPath(spline, data);
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}
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void PacketBuilder::WriteCreate(const MoveSpline& move_spline, ByteBuffer& data)
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{
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//WriteClientStatus(mov, data);
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//data.append<float>(&mov.m_float_values[SpeedWalk], SpeedMaxCount);
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//if (mov.SplineEnabled())
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{
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MoveSplineFlag const& splineFlags = move_spline.splineflags;
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data << splineFlags.raw();
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if (splineFlags.final_angle)
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{
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data << move_spline.facing.angle;
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}
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else if (splineFlags.final_target)
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{
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data << move_spline.facing.target;
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}
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else if (splineFlags.final_point)
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{
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data << move_spline.facing.f.x << move_spline.facing.f.y << move_spline.facing.f.z;
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}
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data << move_spline.timePassed();
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data << move_spline.Duration();
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data << move_spline.GetId();
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data << float(1.f); // splineInfo.duration_mod; added in 3.1
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data << float(1.f); // splineInfo.duration_mod_next; added in 3.1
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data << move_spline.vertical_acceleration; // added in 3.1
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data << move_spline.effect_start_time; // added in 3.1
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uint32 nodes = move_spline.getPath(true).size();
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data << nodes;
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data.append<Vector3>(&move_spline.getPath(true)[0], nodes);
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data << uint8(move_spline.spline.mode()); // added in 3.1
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data << (move_spline.isCyclic() ? Vector3::zero() : move_spline.FinalDestination());
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}
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}
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}
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