89 lines
1.8 KiB
C++
89 lines
1.8 KiB
C++
#pragma once
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// Must be the first include
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#include <glad/glad.h>
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// Other includes
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#include "Gedeng/Camera.h"
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#include "Gedeng/Shader.h"
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#include "Gedeng/Texture.h"
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#include <GLFW/glfw3.h>
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#include <glm/glm.hpp>
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namespace Gedeng {
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class ParticleSystem {
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public:
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enum { PARTICLE_TYPE_GENERATOR = 0, PARTICLE_TYPE_NORMAL = 1 };
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ParticleSystem();
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void render();
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void update(float delta);
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void set_position(glm::vec3 position);
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void set_velocity(glm::vec3 min, glm::vec3 max);
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void set_gravity(glm::vec3 gravity);
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void set_color(glm::vec3 color);
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void set_lifetime(float min, float max);
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void set_size(float size);
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void set_interval(float interval);
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void set_number_of_particles(int number);
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void set_texture(Texture *texture);
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void clear();
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void release();
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int get_particle_count();
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void set_camera(const Camera &camera);
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private:
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bool is_valid;
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GLuint transform_feedback_buffer;
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GLuint particle_buffer[2];
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GLuint vao[2];
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GLuint query;
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Texture *texture;
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int current_read_buffer;
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int current_particle_count;
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const int max_particle_count = 1000; // FIXME: Increase
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glm::mat4 projection_matrix, view_matrix;
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glm::vec3 quad1, quad2;
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glm::vec3 camera_pos;
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float elapsed_time;
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float next_generation_time;
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glm::vec3 spawn_position;
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glm::vec3 spawn_velocity_min, spawn_velocity_range;
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glm::vec3 spawn_gravity_vector;
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glm::vec3 spawn_color;
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float spawn_lifetime_min, spawn_lifetime_range;
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float spawn_size;
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int target_particle_count;
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Shader render_shader;
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Shader update_shader;
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class Particle {
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public:
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glm::vec3 position;
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glm::vec3 velocity;
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glm::vec3 color;
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float lifetime;
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float size;
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int type;
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};
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};
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} // namespace Gedeng
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