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godot/scene/3d/particles.cpp

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/*************************************************************************/
/* particles.cpp */
/*************************************************************************/
/* 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. */
/*************************************************************************/
#include "particles.h"
#include "core/os/os.h"
#include "scene/resources/particles_material.h"
#include "servers/visual_server.h"
AABB Particles::get_aabb() const {
return AABB();
}
PoolVector<Face3> Particles::get_faces(uint32_t p_usage_flags) const {
return PoolVector<Face3>();
}
void Particles::set_emitting(bool p_emitting) {
VS::get_singleton()->particles_set_emitting(particles, p_emitting);
if (p_emitting && one_shot) {
set_process_internal(true);
} else if (!p_emitting) {
set_process_internal(false);
}
}
void Particles::set_amount(int p_amount) {
ERR_FAIL_COND_MSG(p_amount < 1, "Amount of particles cannot be smaller than 1.");
amount = p_amount;
VS::get_singleton()->particles_set_amount(particles, amount);
}
void Particles::set_lifetime(float p_lifetime) {
ERR_FAIL_COND_MSG(p_lifetime <= 0, "Particles lifetime must be greater than 0.");
lifetime = p_lifetime;
VS::get_singleton()->particles_set_lifetime(particles, lifetime);
}
void Particles::set_one_shot(bool p_one_shot) {
one_shot = p_one_shot;
VS::get_singleton()->particles_set_one_shot(particles, one_shot);
if (is_emitting()) {
set_process_internal(true);
if (!one_shot) {
VisualServer::get_singleton()->particles_restart(particles);
}
}
if (!one_shot) {
set_process_internal(false);
}
}
void Particles::set_pre_process_time(float p_time) {
pre_process_time = p_time;
VS::get_singleton()->particles_set_pre_process_time(particles, pre_process_time);
}
void Particles::set_explosiveness_ratio(float p_ratio) {
explosiveness_ratio = p_ratio;
VS::get_singleton()->particles_set_explosiveness_ratio(particles, explosiveness_ratio);
}
void Particles::set_randomness_ratio(float p_ratio) {
randomness_ratio = p_ratio;
VS::get_singleton()->particles_set_randomness_ratio(particles, randomness_ratio);
}
void Particles::set_visibility_aabb(const AABB &p_aabb) {
visibility_aabb = p_aabb;
VS::get_singleton()->particles_set_custom_aabb(particles, visibility_aabb);
update_gizmo();
_change_notify("visibility_aabb");
}
void Particles::set_use_local_coordinates(bool p_enable) {
local_coords = p_enable;
VS::get_singleton()->particles_set_use_local_coordinates(particles, local_coords);
}
void Particles::set_process_material(const Ref<Material> &p_material) {
process_material = p_material;
RID material_rid;
if (process_material.is_valid()) {
material_rid = process_material->get_rid();
}
VS::get_singleton()->particles_set_process_material(particles, material_rid);
update_configuration_warning();
}
void Particles::set_speed_scale(float p_scale) {
speed_scale = p_scale;
VS::get_singleton()->particles_set_speed_scale(particles, p_scale);
}
bool Particles::is_emitting() const {
return VS::get_singleton()->particles_get_emitting(particles);
}
int Particles::get_amount() const {
return amount;
}
float Particles::get_lifetime() const {
return lifetime;
}
bool Particles::get_one_shot() const {
return one_shot;
}
float Particles::get_pre_process_time() const {
return pre_process_time;
}
float Particles::get_explosiveness_ratio() const {
return explosiveness_ratio;
}
float Particles::get_randomness_ratio() const {
return randomness_ratio;
}
AABB Particles::get_visibility_aabb() const {
return visibility_aabb;
}
bool Particles::get_use_local_coordinates() const {
return local_coords;
}
Ref<Material> Particles::get_process_material() const {
return process_material;
}
float Particles::get_speed_scale() const {
return speed_scale;
}
void Particles::set_draw_order(DrawOrder p_order) {
draw_order = p_order;
VS::get_singleton()->particles_set_draw_order(particles, VS::ParticlesDrawOrder(p_order));
}
Particles::DrawOrder Particles::get_draw_order() const {
return draw_order;
}
void Particles::set_draw_passes(int p_count) {
ERR_FAIL_COND(p_count < 1);
draw_passes.resize(p_count);
VS::get_singleton()->particles_set_draw_passes(particles, p_count);
_change_notify();
}
int Particles::get_draw_passes() const {
return draw_passes.size();
}
void Particles::set_draw_pass_mesh(int p_pass, const Ref<Mesh> &p_mesh) {
ERR_FAIL_INDEX(p_pass, draw_passes.size());
draw_passes.write[p_pass] = p_mesh;
RID mesh_rid;
if (p_mesh.is_valid()) {
mesh_rid = p_mesh->get_rid();
}
VS::get_singleton()->particles_set_draw_pass_mesh(particles, p_pass, mesh_rid);
update_configuration_warning();
}
Ref<Mesh> Particles::get_draw_pass_mesh(int p_pass) const {
ERR_FAIL_INDEX_V(p_pass, draw_passes.size(), Ref<Mesh>());
return draw_passes[p_pass];
}
void Particles::set_fixed_fps(int p_count) {
fixed_fps = p_count;
VS::get_singleton()->particles_set_fixed_fps(particles, p_count);
}
int Particles::get_fixed_fps() const {
return fixed_fps;
}
void Particles::set_fractional_delta(bool p_enable) {
fractional_delta = p_enable;
VS::get_singleton()->particles_set_fractional_delta(particles, p_enable);
}
bool Particles::get_fractional_delta() const {
return fractional_delta;
}
String Particles::get_configuration_warning() const {
if (OS::get_singleton()->get_current_video_driver() == OS::VIDEO_DRIVER_GLES2) {
return TTR("GPU-based particles are not supported by the GLES2 video driver.\nUse the CPUParticles node instead. You can use the \"Convert to CPUParticles\" option for this purpose.");
}
String warnings = GeometryInstance::get_configuration_warning();
bool meshes_found = false;
bool anim_material_found = false;
for (int i = 0; i < draw_passes.size(); i++) {
if (draw_passes[i].is_valid()) {
meshes_found = true;
for (int j = 0; j < draw_passes[i]->get_surface_count(); j++) {
anim_material_found = Object::cast_to<ShaderMaterial>(draw_passes[i]->surface_get_material(j).ptr()) != nullptr;
SpatialMaterial *spat = Object::cast_to<SpatialMaterial>(draw_passes[i]->surface_get_material(j).ptr());
anim_material_found = anim_material_found || (spat && spat->get_billboard_mode() == SpatialMaterial::BILLBOARD_PARTICLES);
}
if (anim_material_found) {
break;
}
}
}
anim_material_found = anim_material_found || Object::cast_to<ShaderMaterial>(get_material_override().ptr()) != nullptr;
SpatialMaterial *spat = Object::cast_to<SpatialMaterial>(get_material_override().ptr());
anim_material_found = anim_material_found || (spat && spat->get_billboard_mode() == SpatialMaterial::BILLBOARD_PARTICLES);
if (!meshes_found) {
if (warnings != String()) {
warnings += "\n\n";
}
warnings += "- " + TTR("Nothing is visible because meshes have not been assigned to draw passes.");
}
if (process_material.is_null()) {
if (warnings != String()) {
warnings += "\n";
}
warnings += "- " + TTR("A material to process the particles is not assigned, so no behavior is imprinted.");
} else {
const ParticlesMaterial *process = Object::cast_to<ParticlesMaterial>(process_material.ptr());
if (!anim_material_found && process &&
(process->get_param(ParticlesMaterial::PARAM_ANIM_SPEED) != 0.0 || process->get_param(ParticlesMaterial::PARAM_ANIM_OFFSET) != 0.0 ||
process->get_param_texture(ParticlesMaterial::PARAM_ANIM_SPEED).is_valid() || process->get_param_texture(ParticlesMaterial::PARAM_ANIM_OFFSET).is_valid())) {
if (warnings != String()) {
warnings += "\n";
}
warnings += "- " + TTR("Particles animation requires the usage of a SpatialMaterial whose Billboard Mode is set to \"Particle Billboard\".");
}
}
return warnings;
}
void Particles::restart() {
VisualServer::get_singleton()->particles_restart(particles);
VisualServer::get_singleton()->particles_set_emitting(particles, true);
}
AABB Particles::capture_aabb() const {
return VS::get_singleton()->particles_get_current_aabb(particles);
}
void Particles::_validate_property(PropertyInfo &property) const {
if (property.name.begins_with("draw_pass_")) {
int index = property.name.get_slicec('_', 2).to_int() - 1;
if (index >= draw_passes.size()) {
property.usage = 0;
return;
}
}
}
void Particles::_notification(int p_what) {
if (p_what == NOTIFICATION_PAUSED || p_what == NOTIFICATION_UNPAUSED) {
if (can_process()) {
VS::get_singleton()->particles_set_speed_scale(particles, speed_scale);
} else {
VS::get_singleton()->particles_set_speed_scale(particles, 0);
}
}
// Use internal process when emitting and one_shot are on so that when
// the shot ends the editor can properly update
if (p_what == NOTIFICATION_INTERNAL_PROCESS) {
if (one_shot && !is_emitting()) {
_change_notify();
set_process_internal(false);
}
}
if (p_what == NOTIFICATION_VISIBILITY_CHANGED) {
// make sure particles are updated before rendering occurs if they were active before
if (is_visible_in_tree() && !VS::get_singleton()->particles_is_inactive(particles)) {
VS::get_singleton()->particles_request_process(particles);
}
}
}
void Particles::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_emitting", "emitting"), &Particles::set_emitting);
ClassDB::bind_method(D_METHOD("set_amount", "amount"), &Particles::set_amount);
ClassDB::bind_method(D_METHOD("set_lifetime", "secs"), &Particles::set_lifetime);
ClassDB::bind_method(D_METHOD("set_one_shot", "enable"), &Particles::set_one_shot);
ClassDB::bind_method(D_METHOD("set_pre_process_time", "secs"), &Particles::set_pre_process_time);
ClassDB::bind_method(D_METHOD("set_explosiveness_ratio", "ratio"), &Particles::set_explosiveness_ratio);
ClassDB::bind_method(D_METHOD("set_randomness_ratio", "ratio"), &Particles::set_randomness_ratio);
ClassDB::bind_method(D_METHOD("set_visibility_aabb", "aabb"), &Particles::set_visibility_aabb);
ClassDB::bind_method(D_METHOD("set_use_local_coordinates", "enable"), &Particles::set_use_local_coordinates);
ClassDB::bind_method(D_METHOD("set_fixed_fps", "fps"), &Particles::set_fixed_fps);
ClassDB::bind_method(D_METHOD("set_fractional_delta", "enable"), &Particles::set_fractional_delta);
ClassDB::bind_method(D_METHOD("set_process_material", "material"), &Particles::set_process_material);
ClassDB::bind_method(D_METHOD("set_speed_scale", "scale"), &Particles::set_speed_scale);
ClassDB::bind_method(D_METHOD("is_emitting"), &Particles::is_emitting);
ClassDB::bind_method(D_METHOD("get_amount"), &Particles::get_amount);
ClassDB::bind_method(D_METHOD("get_lifetime"), &Particles::get_lifetime);
ClassDB::bind_method(D_METHOD("get_one_shot"), &Particles::get_one_shot);
ClassDB::bind_method(D_METHOD("get_pre_process_time"), &Particles::get_pre_process_time);
ClassDB::bind_method(D_METHOD("get_explosiveness_ratio"), &Particles::get_explosiveness_ratio);
ClassDB::bind_method(D_METHOD("get_randomness_ratio"), &Particles::get_randomness_ratio);
ClassDB::bind_method(D_METHOD("get_visibility_aabb"), &Particles::get_visibility_aabb);
ClassDB::bind_method(D_METHOD("get_use_local_coordinates"), &Particles::get_use_local_coordinates);
ClassDB::bind_method(D_METHOD("get_fixed_fps"), &Particles::get_fixed_fps);
ClassDB::bind_method(D_METHOD("get_fractional_delta"), &Particles::get_fractional_delta);
ClassDB::bind_method(D_METHOD("get_process_material"), &Particles::get_process_material);
ClassDB::bind_method(D_METHOD("get_speed_scale"), &Particles::get_speed_scale);
ClassDB::bind_method(D_METHOD("set_draw_order", "order"), &Particles::set_draw_order);
ClassDB::bind_method(D_METHOD("get_draw_order"), &Particles::get_draw_order);
ClassDB::bind_method(D_METHOD("set_draw_passes", "passes"), &Particles::set_draw_passes);
ClassDB::bind_method(D_METHOD("set_draw_pass_mesh", "pass", "mesh"), &Particles::set_draw_pass_mesh);
ClassDB::bind_method(D_METHOD("get_draw_passes"), &Particles::get_draw_passes);
ClassDB::bind_method(D_METHOD("get_draw_pass_mesh", "pass"), &Particles::get_draw_pass_mesh);
ClassDB::bind_method(D_METHOD("restart"), &Particles::restart);
ClassDB::bind_method(D_METHOD("capture_aabb"), &Particles::capture_aabb);
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "emitting"), "set_emitting", "is_emitting");
ADD_PROPERTY(PropertyInfo(Variant::INT, "amount", PROPERTY_HINT_EXP_RANGE, "1,1000000,1"), "set_amount", "get_amount");
ADD_GROUP("Time", "");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "lifetime", PROPERTY_HINT_EXP_RANGE, "0.01,600.0,0.01,or_greater"), "set_lifetime", "get_lifetime");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "one_shot"), "set_one_shot", "get_one_shot");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "preprocess", PROPERTY_HINT_EXP_RANGE, "0.00,600.0,0.01"), "set_pre_process_time", "get_pre_process_time");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "speed_scale", PROPERTY_HINT_RANGE, "0,64,0.01"), "set_speed_scale", "get_speed_scale");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "explosiveness", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_explosiveness_ratio", "get_explosiveness_ratio");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "randomness", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_randomness_ratio", "get_randomness_ratio");
ADD_PROPERTY(PropertyInfo(Variant::INT, "fixed_fps", PROPERTY_HINT_RANGE, "0,1000,1"), "set_fixed_fps", "get_fixed_fps");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "fract_delta"), "set_fractional_delta", "get_fractional_delta");
ADD_GROUP("Drawing", "");
ADD_PROPERTY(PropertyInfo(Variant::AABB, "visibility_aabb"), "set_visibility_aabb", "get_visibility_aabb");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "local_coords"), "set_use_local_coordinates", "get_use_local_coordinates");
ADD_PROPERTY(PropertyInfo(Variant::INT, "draw_order", PROPERTY_HINT_ENUM, "Index,Lifetime,View Depth"), "set_draw_order", "get_draw_order");
ADD_GROUP("Process Material", "");
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "process_material", PROPERTY_HINT_RESOURCE_TYPE, "ShaderMaterial,ParticlesMaterial"), "set_process_material", "get_process_material");
ADD_GROUP("Draw Passes", "draw_");
ADD_PROPERTY(PropertyInfo(Variant::INT, "draw_passes", PROPERTY_HINT_RANGE, "0," + itos(MAX_DRAW_PASSES) + ",1"), "set_draw_passes", "get_draw_passes");
for (int i = 0; i < MAX_DRAW_PASSES; i++) {
ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "draw_pass_" + itos(i + 1), PROPERTY_HINT_RESOURCE_TYPE, "Mesh"), "set_draw_pass_mesh", "get_draw_pass_mesh", i);
}
BIND_ENUM_CONSTANT(DRAW_ORDER_INDEX);
BIND_ENUM_CONSTANT(DRAW_ORDER_LIFETIME);
BIND_ENUM_CONSTANT(DRAW_ORDER_VIEW_DEPTH);
BIND_CONSTANT(MAX_DRAW_PASSES);
}
Particles::Particles() {
particles = VS::get_singleton()->particles_create();
set_base(particles);
one_shot = false; // Needed so that set_emitting doesn't access uninitialized values
set_emitting(true);
set_one_shot(false);
set_amount(8);
set_lifetime(1);
set_fixed_fps(0);
set_fractional_delta(true);
set_pre_process_time(0);
set_explosiveness_ratio(0);
set_randomness_ratio(0);
set_visibility_aabb(AABB(Vector3(-4, -4, -4), Vector3(8, 8, 8)));
set_use_local_coordinates(true);
set_draw_passes(1);
set_draw_order(DRAW_ORDER_INDEX);
set_speed_scale(1);
}
Particles::~Particles() {
VS::get_singleton()->free(particles);
}
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