mirror of
https://gitea.wildfiregames.com/0ad/0ad
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157c6af18e
Avoid cases of filenames Update years in terms and other legal(ish) documents Don't update years in license headers, since change is not meaningful Will add linter rule in seperate commit Happy recompiling everyone! Original Patch By: Nescio Comment By: Gallaecio Differential Revision: D2620 This was SVN commit r27786.
125 lines
3.2 KiB
C++
125 lines
3.2 KiB
C++
/* Copyright (C) 2022 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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#ifndef INCLUDED_PARTICLEEMITTERTYPE
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#define INCLUDED_PARTICLEEMITTERTYPE
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#include "graphics/Texture.h"
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#include "lib/file/vfs/vfs_path.h"
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#include "maths/BoundingBoxAligned.h"
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#include <memory>
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#include <string>
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class CVector3D;
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class CParticleEmitter;
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class CParticleManager;
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class IParticleVar;
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class IParticleEffector;
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/**
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* Particle emitter type - stores the common state data for all emitters of that
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* type, and uses that data to update the emitter states.
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*
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* The data is initialised from XML files.
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*
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* Most of the emitter type data is represented as subclasses of IParticleVar,
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* which will typically return a constant value or a random value each time it's
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* evaluated. New subclasses can be added to support different random distributions,
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* etc.
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*/
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class CParticleEmitterType
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{
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NONCOPYABLE(CParticleEmitterType); // reference member
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public:
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CParticleEmitterType(const VfsPath& path, CParticleManager& manager);
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private:
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friend class CModelParticleEmitter;
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friend class CParticleEmitter;
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friend class CParticleVarConstant;
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friend class CParticleVarUniform;
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friend class CParticleVarCopy;
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friend class ParticleRenderer;
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enum
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{
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VAR_EMISSIONRATE,
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VAR_LIFETIME,
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VAR_POSITION_X,
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VAR_POSITION_Y,
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VAR_POSITION_Z,
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VAR_ANGLE,
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VAR_VELOCITY_X,
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VAR_VELOCITY_Y,
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VAR_VELOCITY_Z,
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VAR_VELOCITY_ANGLE,
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VAR_SIZE,
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VAR_SIZE_GROWTHRATE,
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VAR_COLOR_R,
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VAR_COLOR_G,
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VAR_COLOR_B,
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VAR__MAX
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};
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enum class BlendMode
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{
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ADD,
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SUBTRACT,
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OVERLAY,
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MULTIPLY
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};
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int GetVariableID(const std::string& name);
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bool LoadXML(const VfsPath& path);
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/**
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* Update the state of an emitter's particles, by a potentially long time @p dt.
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*/
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void UpdateEmitter(CParticleEmitter& emitter, float dt);
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/**
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* Update the state of an emitter's particles, by a short time @p dt that can
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* be computed in a single step.
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*/
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void UpdateEmitterStep(CParticleEmitter& emitter, float dt);
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CBoundingBoxAligned CalculateBounds(CVector3D emitterPos, CBoundingBoxAligned emittedBounds);
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CTexturePtr m_Texture;
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BlendMode m_BlendMode = BlendMode::ADD;
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bool m_StartFull;
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bool m_UseRelativeVelocity;
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float m_MaxLifetime;
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u16 m_MaxParticles;
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CBoundingBoxAligned m_MaxBounds;
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typedef std::shared_ptr<IParticleVar> IParticleVarPtr;
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std::vector<IParticleVarPtr> m_Variables;
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typedef std::shared_ptr<IParticleEffector> IParticleEffectorPtr;
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std::vector<IParticleEffectorPtr> m_Effectors;
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CParticleManager& m_Manager;
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};
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typedef std::shared_ptr<CParticleEmitterType> CParticleEmitterTypePtr;
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#endif // INCLUDED_PARTICLEEMITTERTYPE
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