particle_emitter.hpp

/*
    Particle emitter.
    Copyright (C) 2015 Denis BOURGE

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
    USA
*/

#ifndef HX3D_GRAPHICS_PARTICLEEMITTER
#define HX3D_GRAPHICS_PARTICLEEMITTER

#include "hx3d/graphics/particle.hpp"
#include "hx3d/utils/pool.hpp"

namespace hx3d {
namespace graphics {

class ParticleEmitter {
public:

  ParticleEmitter(const unsigned int maxParticles);

  void emit(const unsigned int qty);

  void update(const float delta);

  void draw(Batch& batch);

  void setTexture(const Ptr<Texture>& texture);

  unsigned int getParticleCount();

  glm::vec3 position;
  glm::vec3 emitter_size;
  glm::vec3 particle_size;
  glm::vec3 gravity;
  glm::vec3 velocity;
  float rotationSpeed;
  float life;

private:
  void emitOne();

  Pool<Particle> particles;

  Ptr<Texture> texture;
};

} /* graphics */
} /* hx3d */

#endif