particle.h

#ifndef __PARTICLE_H__
#define __PARTICLE_H__
 
#include "app.h"
#include "mesh.h"
#include "timer.h"
#include "shader.h"
#include "camera.h"
 
namespace sgltk {

class Particles {
    Mesh mesh;
    Timer timer;
    unsigned int pos_buf;
    unsigned int vel_buf;
    unsigned int life_buf;
    unsigned int number;
 
    std::vector<glm::vec3> position;
    std::vector<glm::vec3> velocity;
    std::vector<glm::vec2> lifetime;
    std::vector<unsigned int> indices;
public:
    EXPORT Particles();
    EXPORT ~Particles();

    EXPORT void resize(unsigned int number);
    EXPORT void setup_shader(sgltk::Shader *shader);
    EXPORT void setup_camera(sgltk::Camera *camera);
    EXPORT void setup_camera(glm::mat4 *view_matrix,
                 glm::mat4 *projection_matrix);
    EXPORT void attach_texture(const std::string& name,
                   const sgltk::Texture& texture);
    EXPORT bool add_particle(glm::vec3 position,
                 glm::vec3 velocity,
                 float lifetime);
    EXPORT bool add_particle_immediately(glm::vec3 position,
                         glm::vec3 velocity,
                         float lifetime);
    EXPORT void update_all();
    EXPORT void draw();
};
 
}
 
#endif