forked from 0ad/0ad
Yves
89aef0b6eb
Based on existing code that was still around from an old(not working) implementation. Supports basic control from trigger scirpts (queue, start and stop camera paths) and works in multiplayer. This was SVN commit r17594.
90 lines
2.6 KiB
C++
90 lines
2.6 KiB
C++
/* Copyright (C) 2015 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. 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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* 0 A.D. 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 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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//Desc: Contains classes for smooth splines
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//Borrowed from Game Programming Gems4. (Slightly changed to better suit our purposes
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//(and compatability). Any references to external material can be found there
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#ifndef INCLUDED_NUSPLINE
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#define INCLUDED_NUSPLINE
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#define MAX_SPLINE_NODES 40
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#include <stdlib.h>
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#include "FixedVector3D.h"
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#include "Vector3D.h"
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struct SplineData
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{
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// Should be fixed, because used in the simulation
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CFixedVector3D Position;
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CVector3D Velocity;
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// TODO: make rotation as other spline
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CFixedVector3D Rotation;
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fixed Distance/*, DistanceOffset*/; //DistanceOffset is to keep track of how far into the spline this node is
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};
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class RNSpline
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{
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public:
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RNSpline() { NodeCount = 0; }
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virtual ~RNSpline() {}
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void AddNode(const CFixedVector3D& pos);
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void BuildSpline();
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CVector3D GetPosition(float time) const;
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CVector3D GetRotation(float time) const;
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const std::vector<SplineData>& GetAllNodes() const { return Node; }
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fixed MaxDistance;
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int NodeCount;
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protected:
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std::vector<SplineData> Node;
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CVector3D GetStartVelocity(int index);
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CVector3D GetEndVelocity(int index);
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};
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class SNSpline : public RNSpline
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{
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public:
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virtual ~SNSpline() {}
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void BuildSpline(){ RNSpline::BuildSpline(); Smooth(); Smooth(); Smooth(); }
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void Smooth();
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};
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class TNSpline : public SNSpline
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{
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public:
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virtual ~TNSpline() {}
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void AddNode(const CFixedVector3D& pos, const CFixedVector3D& rotation, fixed timePeriod);
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void PushNode() { Node.push_back( SplineData() ); }
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void InsertNode(const int index, const CFixedVector3D& pos, const CFixedVector3D& rotation, fixed timePeriod);
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void RemoveNode(const int index);
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void UpdateNodeTime(const int index, fixed time);
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void UpdateNodePos(const int index, const CFixedVector3D& pos);
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void BuildSpline(){ RNSpline::BuildSpline(); Smooth(); Smooth(); Smooth(); }
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void Smooth(){ for (int x = 0; x < 3; ++x) { SNSpline::Smooth(); Constrain(); } }
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void Constrain();
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};
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#endif // INCLUDED_NUSPLINE
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