137 lines
3.0 KiB
C++
137 lines
3.0 KiB
C++
/*==================================================================
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| Name: ParticleEmitter.h
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|===================================================================
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| Overview: Particle emitter class that emits particles from
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| an origin (or area) with a variety of set colours,
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| durations, forces and a single common sprite.
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| Usage: Instantiate one emitter per desired effect. Set the
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| various fields (preferably all, the defaults are rather
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| boring) and then call Frame() - you guessed it - every
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| frame.
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==================================================================*/
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#ifndef PARTICLE_EMITTER_H
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#define PARTICLE_EMITTER_H
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//--------------------------------------------------------
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// Includes / Compiler directives
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//--------------------------------------------------------
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#include "Particle.h"
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#include "Vector3D.h"
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#include <vector>
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//--------------------------------------------------------
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// Declarations
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//--------------------------------------------------------
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typedef struct {
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GLfloat x, y, z;
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} vertex3f;
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typedef struct {
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GLfloat x, y;
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} vertex2f;
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typedef struct {
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GLfloat r, g, b, a;
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} color4f;
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class CParticleEmitter
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{
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public:
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CParticleEmitter();
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~CParticleEmitter();
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// must be performed before first frame/render/update call
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bool Init();
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// renders and updates particles
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void Frame();
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// renders without updating particles
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void Render();
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void Update();
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bool IsFinished();
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void SetTimelimit(double time);
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// void SetSprite(CSprite * sprite); // deprecated
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void SetTexture(GLuint tex);
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void SetWidth(float width);
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void SetHeight(float height);
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void SetOrigin(CVector3D origin);
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void SetOrigin(float x, float y, float z);
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void SetOriginSpread(CVector3D spread);
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void SetOriginSpread(float x, float y, float z);
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void SetGravity(CVector3D gravity);
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void SetGravity(float x, float y, float z);
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void SetVelocity(CVector3D direction);
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void SetVelocity(float x, float y, float z);
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void SetVelocitySpread(CVector3D spread);
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void SetVelocitySpread(float x, float y, float z);
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void SetStartColour(float r, float g, float b, float a);
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void SetEndColour(float r, float g, float b, float a);
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// in milliseconds
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void SetMaxLifetime(double maxLife);
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// in milliseconds
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void SetMinLifetime(double minLife);
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void SetMaxParticles(int maxParticles);
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void SetMinParticles(int minParticles);
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private:
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GLuint m_texture;
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vertex3f *m_vertices;
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vertex2f *m_texCoords;
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color4f *m_colours;
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float m_width;
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float m_height;
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std::vector<CParticle *> m_particles;
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std::vector<CParticle *> m_disabled;
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CVector3D m_origin;
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CVector3D m_originSpread;
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CVector3D m_velocity;
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CVector3D m_velocitySpread;
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CVector3D m_gravity;
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float m_startColour[4];
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float m_endColour[4];
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int m_maxParticles;
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int m_minParticles;
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int m_numParticles;
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double m_maxLifetime;
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double m_minLifetime;
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double m_timeOfLastFrame;
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double m_timeSinceLastEmit;
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double m_timeElapsedTotal;
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double m_timeLimit;
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};
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#endif // PARTICLE_EMITTER_H
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