$#include "ParticleEmitter.h"

enum EmitterType
{
    EMITTER_SPHERE,
    EMITTER_BOX
};

/*
struct Particle
{
    Vector3 velocity_;
    Vector2 size_;
    float timer_;
    float timeToLive_;
    float scale_;
    float rotationSpeed_;
    unsigned colorIndex_;
    unsigned texIndex_;
};
*/

struct ColorFrame
{
    ColorFrame();
    ColorFrame(const Color& color);
    ColorFrame(const Color& color, float time);
    Color Interpolate(const ColorFrame& next, float time);
    Color color_ @ color;
    float time_ @ time;
};

struct TextureFrame
{
    TextureFrame();
    Rect uv_ @ uv;
    float time_ @ time;
};

class ParticleEmitter : public BillboardSet
{
    bool Load(XMLFile* file);
    bool Save(XMLFile* file);
    void SetNumParticles(unsigned num);
    void SetEmissionRate(float rate);
    void SetMinEmissionRate(float rate);
    void SetMaxEmissionRate(float rate);
    void SetEmitterType(EmitterType type);
    void SetEmitterSize(const Vector3& size);
    void SetActiveTime(float time);
    void SetInactiveTime(float time);
    void SetEmitting(bool enable, bool resetPeriod = false);
    void SetUpdateInvisible(bool enable);
    void SetTimeToLive(float time);
    void SetMinTimeToLive(float time);
    void SetMaxTimeToLive(float time);
    void SetParticleSize(const Vector2& size);
    void SetMinParticleSize(const Vector2& size);
    void SetMaxParticleSize(const Vector2& size);
    void SetMinDirection(const Vector3& direction);
    void SetMaxDirection(const Vector3& direction);
    void SetVelocity(float velocity);
    void SetMinVelocity(float velocity);
    void SetMaxVelocity(float velocity);
    void SetRotation(float rotation);
    void SetMinRotation(float rotation);
    void SetMaxRotation(float rotation);
    void SetRotationSpeed(float speed);
    void SetMinRotationSpeed(float speed);
    void SetMaxRotationSpeed(float speed);
    void SetConstantForce(const Vector3& force);
    void SetDampingForce(float force);
    void SetSizeAdd(float sizeAdd);
    void SetSizeMul(float sizeMul);
    void SetColor(const Color& color);
    void SetNumColors(unsigned num);
    void SetNumTextureFrames(unsigned num);
    
    unsigned GetNumParticles() const;
    bool IsEmitting() const;
    bool GetUpdateInvisible() const;
    float GetMinEmissionRate() const;
    float GetMaxEmissionRate() const;
    EmitterType GetEmitterType() const;
    const Vector3& GetEmitterSize() const;
    float GetActiveTime() const;
    float GetInactiveTime() const;
    float GetMinTimeToLive() const;
    float GetMaxTimeToLive() const;
    const Vector2& GetMinParticleSize() const;
    const Vector2& GetMaxParticleSize() const;
    const Vector3& GetMinDirection() const;
    const Vector3& GetMaxDirection() const;
    float GetMinVelocity() const;
    float GetMaxVelocity() const;
    float GetMinRotation() const;
    float GetMaxRotation() const;
    float GetMinRotationSpeed() const;
    float GetMaxRotationSpeed() const;
    const Vector3& GetConstantForce() const;
    float GetDampingForce() const;
    float GetSizeAdd() const;
    float GetSizeMul() const;
    unsigned GetNumColors() const;
    ColorFrame* GetColor(unsigned index);
    unsigned GetNumTextureFrames() const;
    TextureFrame* GetTextureFrame(unsigned index);
    
    tolua_property__get_set unsigned numParticles;
    tolua_property__get_set float emissionRate; // Write only property.
    tolua_property__is_set bool emitting;
    tolua_property__get_set bool updateInvisible;
    tolua_property__get_set float minEmissionRate;
    tolua_property__get_set float maxEmissionRate;
    tolua_property__get_set EmitterType emitterType;
    tolua_property__get_set Vector3& emitterSize;
    tolua_property__get_set float activeTime;
    tolua_property__get_set float inactiveTime;
    tolua_property__get_set float timeToLive; // Write only property.
    tolua_property__get_set float minTimeToLive;
    tolua_property__get_set float maxTimeToLive;
    tolua_property__get_set Vector2& particleSize; // Write only property.
    tolua_property__get_set Vector2& minParticleSize;
    tolua_property__get_set Vector2& maxParticleSize;
    tolua_property__get_set Vector3& minDirection;
    tolua_property__get_set Vector3& maxDirection;
    tolua_property__get_set float velocity; // Write only property.
    tolua_property__get_set float minVelocity;
    tolua_property__get_set float maxVelocity;
    tolua_property__get_set float rotation; // Write only property.
    tolua_property__get_set float minRotation;
    tolua_property__get_set float maxRotation;
    tolua_property__get_set float rotationSpeed; // Write only property.
    tolua_property__get_set float minRotationSpeed;
    tolua_property__get_set float maxRotationSpeed;
    tolua_property__get_set Vector3& constantForce;
    tolua_property__get_set float dampingForce;
    tolua_property__get_set float sizeAdd;
    tolua_property__get_set float sizeMul;
    tolua_property__get_set unsigned numColors;
    tolua_property__get_set unsigned numTextureFrames;
};

${
#define TOLUA_DISABLE_tolua_get_ParticleEmitter_emissionRate
#define tolua_get_ParticleEmitter_emissionRate NULL

#define TOLUA_DISABLE_tolua_get_ParticleEmitter_timeToLive
#define tolua_get_ParticleEmitter_timeToLive NULL

#define TOLUA_DISABLE_tolua_get_ParticleEmitter_particleSize_ref
#define tolua_get_ParticleEmitter_particleSize_ref NULL

#define TOLUA_DISABLE_tolua_get_ParticleEmitter_velocity
#define tolua_get_ParticleEmitter_velocity NULL

#define TOLUA_DISABLE_tolua_get_ParticleEmitter_rotation
#define tolua_get_ParticleEmitter_rotation NULL

#define TOLUA_DISABLE_tolua_get_ParticleEmitter_rotationSpeed
#define tolua_get_ParticleEmitter_rotationSpeed NULL
$}