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#ifndef __JE_PARTICLE_H__
#define __JE_PARTICLE_H__
#include "../../game/gameobject.h"
#include "../../math/ranged_value.h"
#include "../../math/transform.h"
#include "../../math/vector2.hpp"
#include "../../math/percentage.h"
#include "../color.h"
#include "../sprite.h"
namespace JinEngine
{
namespace Graphics
{
namespace Particles
{
class ParticleEmitter;
class ScaledRangedValue : public Math::RangedValue
{
public:
ScaledRangedValue() {};
ScaledRangedValue(Math::Percentage* points, uint n);
void set(Math::Percentage* points, uint n);
};
class GradientColorValue
{
public:
GradientColorValue();
void addColor(Color col, Math::Percentage time);
Color getColor(Math::Percentage time);
void insertColor(uint i, Color col, Math::Percentage time);
void removeColor(uint i);
private:
std::vector<Color> mColors;
std::vector<Math::Percentage> mTimeline;
uint mCount;
};
///
///
///
struct LifeTimeDef
{
bool enableRandom = false;
Struct(life,
struct
{
float floor, ceil;
} random;
float life = 1.0f;
);
};
struct ScaleDef
{
float scale = 1;
Struct(overTime,
bool enable = false;
ScaledRangedValue value;
);
};
struct ColorDef
{
Color color = Color::WHITE;
Struct(overTime,
bool enable = false;
GradientColorValue value;
);
};
struct TransparencyDef
{
Math::Percentage transparency = 1.f;
Struct(overTime,
bool enable = false;
ScaledRangedValue value;
);
};
struct linearAccelarationDef
{
Math::Vector2<float> linearAccelaration;
};
struct RadialAccelarationDef
{
float radialAccelaration = 0.f;
};
struct AngularSpeedDef
{
bool enableRandom = false;
Struct(angularSpeed,
struct
{
float floor = 0;
float ceil = 0;
} random;
float angularSpeed = 0;
);
};
enum SpriteMode
{
SINGLE = 1,
RANDOM = 2,
ANIMATED = 3,
};
struct SpritesDef
{
SpriteMode mode = SpriteMode::SINGLE;
std::vector<const Sprite*> sprites;
};
struct BlendDef
{
bool additive = false;
};
///
///
///
struct ParticleDef
{
public:
// Basic definitions.
LifeTimeDef lifeTimeDef; ///<
linearAccelarationDef linearAccelarationDef; ///<
RadialAccelarationDef radialAccelarationDef; ///<
AngularSpeedDef angularSpeedDef; ///<
SpritesDef spritesDef; ///<
BlendDef blendDef; ///<
// Optional definitions.
ScaleDef scaleDef; ///<
ColorDef colorDef; ///<
TransparencyDef transparencyDef; ///<
private:
friend class ParticleEmitter;
};
///
/// A single particle contains various properties of particle, such as position, accelaration, color
/// and other attributes changed over time.
///
class Particle : public Renderable, public Game::GameObject
{
public:
enum ParticleUpdateMask
{
NONE = 0,
UPDATE_COLOR = 1 << 0,
UPDATE_SCALE = 1 << 1,
UPDATE_POSITION = 1 << 2,
UPDATE_ROTATION = 1 << 3,
UPDATE_SPRITE = 1 << 4,
UPDATE_VELOCITY = 1 << 5,
};
///
/// Default constructor.
///
Particle();
///
/// Reset to default.
///
void reset();
///
///
///
void update(float dt);
///
///
///
void render();
// Methods end.
ParticleDef* def;
uint updateFlags = ParticleUpdateMask::NONE;
float lifeTime = 1.0f;
float life = 0.0f;
int spriteIndex = 0;
Color color = Color::WHITE;
Math::Transform transform;
Math::Vector2<float> velocity;
Math::Vector2<float> linearAcceleration;
float angularSpeed;
float radialAcceleration = 0;
bool alive = true;
};
} // namespace Particles
} // namespace Graphics
} // namespace JinEngine
#endif
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