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godot/scene/2d/cpu_particles_2d.h

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/*************************************************************************/
/* cpu_particles_2d.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifndef CPU_PARTICLES_2D_H
#define CPU_PARTICLES_2D_H
#include "core/templates/rid.h"
#include "scene/2d/node_2d.h"
#include "scene/resources/texture.h"
class CPUParticles2D : public Node2D {
private:
GDCLASS(CPUParticles2D, Node2D);
public:
enum DrawOrder {
DRAW_ORDER_INDEX,
DRAW_ORDER_LIFETIME,
};
enum Parameter {
PARAM_INITIAL_LINEAR_VELOCITY,
PARAM_ANGULAR_VELOCITY,
PARAM_ORBIT_VELOCITY,
PARAM_LINEAR_ACCEL,
PARAM_RADIAL_ACCEL,
PARAM_TANGENTIAL_ACCEL,
PARAM_DAMPING,
PARAM_ANGLE,
PARAM_SCALE,
PARAM_HUE_VARIATION,
PARAM_ANIM_SPEED,
PARAM_ANIM_OFFSET,
PARAM_MAX
};
enum ParticleFlags {
PARTICLE_FLAG_ALIGN_Y_TO_VELOCITY,
PARTICLE_FLAG_ROTATE_Y, // Unused, but exposed for consistency with 3D.
PARTICLE_FLAG_DISABLE_Z, // Unused, but exposed for consistency with 3D.
PARTICLE_FLAG_MAX
};
enum EmissionShape {
EMISSION_SHAPE_POINT,
EMISSION_SHAPE_SPHERE,
EMISSION_SHAPE_RECTANGLE,
EMISSION_SHAPE_POINTS,
EMISSION_SHAPE_DIRECTED_POINTS,
EMISSION_SHAPE_MAX
};
private:
bool emitting = false;
struct Particle {
Transform2D transform;
Color color;
float custom[4] = {};
real_t rotation = 0.0;
Vector2 velocity;
bool active = false;
real_t angle_rand = 0.0;
real_t scale_rand = 0.0;
real_t hue_rot_rand = 0.0;
real_t anim_offset_rand = 0.0;
float time = 0.0;
float lifetime = 0.0;
Color base_color;
uint32_t seed = 0;
};
float time = 0.0;
float inactive_time = 0.0;
float frame_remainder = 0.0;
int cycle = 0;
bool redraw = false;
RID mesh;
RID multimesh;
Vector<Particle> particles;
Vector<float> particle_data;
Vector<int> particle_order;
struct SortLifetime {
const Particle *particles = nullptr;
bool operator()(int p_a, int p_b) const {
return particles[p_a].time > particles[p_b].time;
}
};
struct SortAxis {
const Particle *particles = nullptr;
Vector2 axis;
bool operator()(int p_a, int p_b) const {
return axis.dot(particles[p_a].transform[2]) < axis.dot(particles[p_b].transform[2]);
}
};
//
bool one_shot = false;
float lifetime = 1.0;
float pre_process_time = 0.0;
real_t explosiveness_ratio = 0.0;
real_t randomness_ratio = 0.0;
real_t lifetime_randomness = 0.0;
real_t speed_scale = 1.0;
bool local_coords;
int fixed_fps = 0;
bool fractional_delta = true;
Transform2D inv_emission_transform;
DrawOrder draw_order = DRAW_ORDER_INDEX;
Ref<Texture2D> texture;
////////
Vector2 direction = Vector2(1, 0);
real_t spread = 45.0;
real_t parameters[PARAM_MAX];
real_t randomness[PARAM_MAX];
Ref<Curve> curve_parameters[PARAM_MAX];
Color color;
Ref<Gradient> color_ramp;
bool particle_flags[PARTICLE_FLAG_MAX];
EmissionShape emission_shape = EMISSION_SHAPE_POINT;
real_t emission_sphere_radius = 1.0;
Vector2 emission_rect_extents = Vector2(1, 1);
Vector<Vector2> emission_points;
Vector<Vector2> emission_normals;
Vector<Color> emission_colors;
int emission_point_count = 0;
Vector2 gravity = Vector2(0, 98);
void _update_internal();
void _particles_process(float p_delta);
void _update_particle_data_buffer();
Mutex update_mutex;
void _update_render_thread();
void _update_mesh_texture();
void _set_redraw(bool p_redraw);
void _texture_changed();
protected:
static void _bind_methods();
void _notification(int p_what);
virtual void _validate_property(PropertyInfo &property) const override;
public:
void set_emitting(bool p_emitting);
void set_amount(int p_amount);
void set_lifetime(float p_lifetime);
void set_one_shot(bool p_one_shot);
void set_pre_process_time(float p_time);
void set_explosiveness_ratio(real_t p_ratio);
void set_randomness_ratio(real_t p_ratio);
void set_lifetime_randomness(float p_random);
void set_visibility_aabb(const Rect2 &p_aabb);
void set_use_local_coordinates(bool p_enable);
void set_speed_scale(real_t p_scale);
bool is_emitting() const;
int get_amount() const;
float get_lifetime() const;
bool get_one_shot() const;
float get_pre_process_time() const;
real_t get_explosiveness_ratio() const;
real_t get_randomness_ratio() const;
float get_lifetime_randomness() const;
Rect2 get_visibility_aabb() const;
bool get_use_local_coordinates() const;
real_t get_speed_scale() const;
void set_fixed_fps(int p_count);
int get_fixed_fps() const;
void set_fractional_delta(bool p_enable);
bool get_fractional_delta() const;
void set_draw_order(DrawOrder p_order);
DrawOrder get_draw_order() const;
void set_draw_passes(int p_count);
int get_draw_passes() const;
void set_texture(const Ref<Texture2D> &p_texture);
Ref<Texture2D> get_texture() const;
///////////////////
void set_direction(Vector2 p_direction);
Vector2 get_direction() const;
void set_spread(real_t p_spread);
real_t get_spread() const;
void set_param(Parameter p_param, real_t p_value);
real_t get_param(Parameter p_param) const;
void set_param_randomness(Parameter p_param, real_t p_value);
real_t get_param_randomness(Parameter p_param) const;
void set_param_curve(Parameter p_param, const Ref<Curve> &p_curve);
Ref<Curve> get_param_curve(Parameter p_param) const;
void set_color(const Color &p_color);
Color get_color() const;
void set_color_ramp(const Ref<Gradient> &p_ramp);
Ref<Gradient> get_color_ramp() const;
void set_particle_flag(ParticleFlags p_particle_flag, bool p_enable);
bool get_particle_flag(ParticleFlags p_particle_flag) const;
void set_emission_shape(EmissionShape p_shape);
void set_emission_sphere_radius(real_t p_radius);
void set_emission_rect_extents(Vector2 p_extents);
void set_emission_points(const Vector<Vector2> &p_points);
void set_emission_normals(const Vector<Vector2> &p_normals);
void set_emission_colors(const Vector<Color> &p_colors);
void set_emission_point_count(int p_count);
EmissionShape get_emission_shape() const;
real_t get_emission_sphere_radius() const;
Vector2 get_emission_rect_extents() const;
Vector<Vector2> get_emission_points() const;
Vector<Vector2> get_emission_normals() const;
Vector<Color> get_emission_colors() const;
int get_emission_point_count() const;
void set_gravity(const Vector2 &p_gravity);
Vector2 get_gravity() const;
TypedArray<String> get_configuration_warnings() const override;
void restart();
void convert_from_particles(Node *p_particles);
CPUParticles2D();
~CPUParticles2D();
};
VARIANT_ENUM_CAST(CPUParticles2D::DrawOrder)
VARIANT_ENUM_CAST(CPUParticles2D::Parameter)
VARIANT_ENUM_CAST(CPUParticles2D::ParticleFlags)
VARIANT_ENUM_CAST(CPUParticles2D::EmissionShape)
#endif // CPU_PARTICLES_2D_H
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