💿🐜 Antkeeper source code https://antkeeper.com
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  1. /*
  2. * Copyright (C) 2017-2019 Christopher J. Howard
  3. *
  4. * This file is part of Antkeeper Source Code.
  5. *
  6. * Antkeeper Source Code is free software: you can redistribute it and/or modify
  7. * it under the terms of the GNU General Public License as published by
  8. * the Free Software Foundation, either version 3 of the License, or
  9. * (at your option) any later version.
  10. *
  11. * Antkeeper Source Code is distributed in the hope that it will be useful,
  12. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14. * GNU General Public License for more details.
  15. *
  16. * You should have received a copy of the GNU General Public License
  17. * along with Antkeeper Source Code. If not, see <http://www.gnu.org/licenses/>.
  18. */
  19. #ifndef PARTICLE_SYSTEM_HPP
  20. #define PARTICLE_SYSTEM_HPP
  21. #include "../components/model-component.hpp"
  22. #include "../components/transform-component.hpp"
  23. #include "../entity-group.hpp"
  24. #include "../system.hpp"
  25. #include <emergent/emergent.hpp>
  26. using namespace Emergent;
  27. #include <stack>
  28. class ParticleSystem:
  29. public System
  30. {
  31. public:
  32. ParticleSystem(ComponentManager* componentManager);
  33. ~ParticleSystem();
  34. void setMaterial(Material* material);
  35. void setParticleCount(std::size_t count);
  36. void setDirection(const Vector3& direction);
  37. void setLifeTime(float time);
  38. void setEmissionRate(float frequency);
  39. const BillboardBatch* getBillboardBatch() const;
  40. BillboardBatch* getBillboardBatch();
  41. void resize(std::size_t count);
  42. virtual void update(float t, float dt);
  43. void emit(const Vector3& position);
  44. private:
  45. struct Particle
  46. {
  47. Vector3 translation;
  48. float size;
  49. float life;
  50. float speed;
  51. Vector3 direction;
  52. };
  53. BillboardBatch batch;
  54. BillboardBatch::Range* range;
  55. Material* material;
  56. std::vector<Particle> particles;
  57. Vector3 direction;
  58. float lifeTime;
  59. float emissionRate;
  60. std::stack<std::size_t> stack;
  61. };
  62. inline const BillboardBatch* ParticleSystem::getBillboardBatch() const
  63. {
  64. return &batch;
  65. }
  66. inline BillboardBatch* ParticleSystem::getBillboardBatch()
  67. {
  68. return &batch;
  69. }
  70. #endif // PARTICLE_SYSTEM_HPP