axmol/extensions/Particle3D/PU/CCPUTextureAnimator.h

/****************************************************************************
 Copyright (C) 2013 Henry van Merode. All rights reserved.
 Copyright (c) 2015-2016 Chukong Technologies Inc.
 Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.

 https://axmolengine.github.io/

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#ifndef __AX_PU_PARTICLE_3D_TEXTURE_ANIMATOR_H__
#define __AX_PU_PARTICLE_3D_TEXTURE_ANIMATOR_H__

#include "extensions/Particle3D/PU/CCPUAffector.h"
#include "base/ccTypes.h"

NS_AX_BEGIN

class AX_EX_DLL PUTextureAnimator : public PUAffector
{
public:
    enum TextureAnimationType
    {
        TAT_LOOP,
        TAT_UP_DOWN,
        TAT_RANDOM
    };

    // Constants
    static const float DEFAULT_TIME_STEP;
    static const unsigned short DEFAULT_TEXCOORDS_START;
    static const unsigned short DEFAULT_TEXCOORDS_END;
    static const TextureAnimationType DEFAULT_ANIMATION_TYPE;
    static const bool DEFAULT_START_RANDOM;

    static PUTextureAnimator* create();

    virtual void preUpdateAffector(float deltaTime) override;
    virtual void initParticleForEmission(PUParticle3D* particle) override;
    virtual void updatePUAffector(PUParticle3D* particle, float deltaTime) override;

    /** Returns the AnimationTimeStep. The AnimationTimeStep defines the time between each animation frame. */
    float getAnimationTimeStep() const;

    /** Set the  AnimationTimeStep */
    void setAnimationTimeStep(float animationTimeStep);

    /** Returns the type of texture animation. */
    TextureAnimationType getTextureAnimationType() const;

    /** Set the type of texture animation. */
    void setTextureAnimationType(TextureAnimationType textureAnimationType);

    /** Todo */
    unsigned short getTextureCoordsStart() const;

    /** Todo */
    void setTextureCoordsStart(unsigned short textureCoordsStart);

    /** Todo */
    unsigned short getTextureCoordsEnd() const;

    /** Todo */
    void setTextureCoordsEnd(unsigned short textureCoordsEnd);

    /** Todo */
    bool isStartRandom() const;

    /** Todo */
    void setStartRandom(bool startRandom);

    virtual void copyAttributesTo(PUAffector* affector) override;

    PUTextureAnimator();
    virtual ~PUTextureAnimator();

protected:
    /** Todo.
     */
    void determineNextTextureCoords(PUParticle3D* visualParticle);

protected:
    float _animationTimeStep;
    float _animationTimeStepCount;
    bool _startRandom;
    bool _animationTimeStepSet;
    bool _nextIndex;
    TextureAnimationType _textureAnimationType;
    unsigned short _textureCoordsStart;
    unsigned short _textureCoordsEnd;
};
NS_AX_END

#endif