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Diffstat (limited to 'src/libjin/graphics/particles/particle_emitter.h')
| -rw-r--r-- | src/libjin/graphics/particles/particle_emitter.h | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/src/libjin/graphics/particles/particle_emitter.h b/src/libjin/graphics/particles/particle_emitter.h new file mode 100644 index 0000000..9f9465a --- /dev/null +++ b/src/libjin/graphics/particles/particle_emitter.h @@ -0,0 +1,136 @@ +#ifndef __JE_PARTICLE_EMITTER_H__ +#define __JE_PARTICLE_EMITTER_H__ + +#include "../../common/temporary.h" +#include "../../math/vector2.hpp" + +#include "particle.h" + +namespace JinEngine +{ + namespace Graphics + { + namespace Particles + { + + struct PositionDef + { + bool enableRandom = false; + Struct(position, + struct + { + Math::Vector2<float> floor; + Math::Vector2<float> ceil; + } random; + Math::Vector2<float> position; + ); + }; + + struct DirectionDef + { + bool enableRandom = false; + Struct(direction, + struct + { + float floor = 0; + float ceil = 0; + } random; + float direction = 0; + ); + }; + + /// + /// How many particles emitted per second. + /// + struct EmitRateDef + { + bool enableRandom = false; + Struct(rate, + struct + { + float floor = 1; + float ceil = 1; + } random; + float rate = 1; + ); + }; + + /// + /// Initial speed of particle. + /// + struct ForceDef + { + bool enableRandom = false; + Struct(force, + struct + { + float floor = 1; + float ceil = 1; + } random; + float force = 1; + ); + }; + + /// + /// Definition of particle emitter. + /// + struct ParticleEmitterDef + { + EmitRateDef emitRateDef; ///< Emit rate. + + PositionDef positionDef; ///< Emit position(relativily to the particle system center). + DirectionDef directionDef; ///< Emit direction. + ForceDef forceDef; ///< Emit force. + }; + + class ParticleSystem; + + /// + /// Emit a single particle. + /// + class ParticleEmitter + { + public: + /// + /// + /// + ParticleEmitter(ParticleSystem& ps); + + /// + /// + /// + void update(float dt); + + private: + /// + /// + /// + ParticleSystem& mPS; + + ParticleEmitterDef& mDef; + + ParticleDef& mPDef; + + /// + /// Emit particle according to emitter definition and particle definition, particle system should + /// assign particle value to the particle in particle pool, but not use this return particle. + /// + void emit(); + + /// + /// + /// + float mTime; + + /// + /// + /// + float mInterval; + + }; + + } // namespace Particles + } // namespace Graphics +} // namespace JinEngine + +#endif
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