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minetest/src/client/particles.cpp
Gregor Parzefall 6f0d36c41a Fixes and improvements
2023-07-20 22:15:47 +02:00

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/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
This program 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 program 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 program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "particles.h"
#include <cmath>
#include "client.h"
#include "collision.h"
#include "client/content_cao.h"
#include "client/clientevent.h"
#include "client/renderingengine.h"
#include "util/numeric.h"
#include "light.h"
#include "environment.h"
#include "clientmap.h"
#include "mapnode.h"
#include "nodedef.h"
#include "client.h"
#include "settings.h"
/*
Particle
*/
Particle::Particle(
IGameDef *gamedef,
LocalPlayer *player,
ClientEnvironment *env,
const ParticleParameters &p,
const ClientTexRef& texture,
v2f texpos,
v2f texsize,
video::SColor color
):
scene::ISceneNode(((Client *)gamedef)->getSceneManager()->getRootSceneNode(),
((Client *)gamedef)->getSceneManager()),
m_texture(texture)
{
// Misc
m_gamedef = gamedef;
m_env = env;
// translate blend modes to GL blend functions
video::E_BLEND_FACTOR bfsrc, bfdst;
video::E_BLEND_OPERATION blendop;
const auto blendmode = texture.tex != nullptr
? texture.tex -> blendmode
: ParticleParamTypes::BlendMode::alpha;
switch (blendmode) {
case ParticleParamTypes::BlendMode::add:
bfsrc = video::EBF_SRC_ALPHA;
bfdst = video::EBF_DST_ALPHA;
blendop = video::EBO_ADD;
break;
case ParticleParamTypes::BlendMode::sub:
bfsrc = video::EBF_SRC_ALPHA;
bfdst = video::EBF_DST_ALPHA;
blendop = video::EBO_REVSUBTRACT;
break;
case ParticleParamTypes::BlendMode::screen:
bfsrc = video::EBF_ONE;
bfdst = video::EBF_ONE_MINUS_SRC_COLOR;
blendop = video::EBO_ADD;
break;
default: // includes ParticleParamTypes::BlendMode::alpha
bfsrc = video::EBF_SRC_ALPHA;
bfdst = video::EBF_ONE_MINUS_SRC_ALPHA;
blendop = video::EBO_ADD;
break;
}
// Texture
m_material.Lighting = false;
m_material.BackfaceCulling = false;
m_material.FogEnable = true;
m_material.forEachTexture([] (auto &tex) {
tex.MinFilter = video::ETMINF_NEAREST_MIPMAP_NEAREST;
tex.MagFilter = video::ETMAGF_NEAREST;
});
// correctly render layered transparent particles -- see #10398
m_material.ZWriteEnable = video::EZW_AUTO;
// enable alpha blending and set blend mode
m_material.MaterialType = video::EMT_ONETEXTURE_BLEND;
m_material.MaterialTypeParam = video::pack_textureBlendFunc(
bfsrc, bfdst,
video::EMFN_MODULATE_1X,
video::EAS_TEXTURE | video::EAS_VERTEX_COLOR);
m_material.BlendOperation = blendop;
m_material.setTexture(0, m_texture.ref);
m_texpos = texpos;
m_texsize = texsize;
m_animation = p.animation;
// Color
m_base_color = color;
m_color = color;
// Particle related
m_pos = p.pos;
m_velocity = p.vel;
m_acceleration = p.acc;
m_drag = p.drag;
m_jitter = p.jitter;
m_bounce = p.bounce;
m_expiration = p.expirationtime;
m_player = player;
m_size = p.size;
m_collisiondetection = p.collisiondetection;
m_collision_removal = p.collision_removal;
m_object_collision = p.object_collision;
m_vertical = p.vertical;
m_glow = p.glow;
m_alpha = 0;
m_parent = nullptr;
// Irrlicht stuff
const float c = p.size / 2;
m_collisionbox = aabb3f(-c, -c, -c, c, c, c);
this->setAutomaticCulling(scene::EAC_OFF);
// Init lighting
updateLight();
// Init model
updateVertices();
}
Particle::~Particle()
{
/* if our textures aren't owned by a particlespawner, we need to clean
* them up ourselves when the particle dies */
if (m_parent == nullptr)
delete m_texture.tex;
}
void Particle::OnRegisterSceneNode()
{
if (IsVisible)
SceneManager->registerNodeForRendering(this, scene::ESNRP_TRANSPARENT_EFFECT);
ISceneNode::OnRegisterSceneNode();
}
void Particle::render()
{
video::IVideoDriver *driver = SceneManager->getVideoDriver();
driver->setMaterial(m_material);
driver->setTransform(video::ETS_WORLD, AbsoluteTransformation);
u16 indices[] = {0,1,2, 2,3,0};
driver->drawVertexPrimitiveList(m_vertices, 4,
indices, 2, video::EVT_STANDARD,
scene::EPT_TRIANGLES, video::EIT_16BIT);
}
void Particle::step(float dtime)
{
m_time += dtime;
// apply drag (not handled by collisionMoveSimple) and brownian motion
v3f av = vecAbsolute(m_velocity);
av -= av * (m_drag * dtime);
m_velocity = av*vecSign(m_velocity) + v3f(m_jitter.pickWithin())*dtime;
if (m_collisiondetection) {
aabb3f box = m_collisionbox;
v3f p_pos = m_pos * BS;
v3f p_velocity = m_velocity * BS;
collisionMoveResult r = collisionMoveSimple(m_env, m_gamedef, BS * 0.5f,
box, 0.0f, dtime, &p_pos, &p_velocity, m_acceleration * BS, nullptr,
m_object_collision);
f32 bounciness = m_bounce.pickWithin();
if (r.collides && (m_collision_removal || bounciness > 0)) {
if (m_collision_removal) {
// force expiration of the particle
m_expiration = -1.0f;
} else if (bounciness > 0) {
/* cheap way to get a decent bounce effect is to only invert the
* largest component of the velocity vector, so e.g. you don't
* have a rock immediately bounce back in your face when you try
* to skip it across the water (as would happen if we simply
* downscaled and negated the velocity vector). this means
* bounciness will work properly for cubic objects, but meshes
* with diagonal angles and entities will not yield the correct
* visual. this is probably unavoidable */
if (av.Y > av.X && av.Y > av.Z) {
m_velocity.Y = -(m_velocity.Y * bounciness);
} else if (av.X > av.Y && av.X > av.Z) {
m_velocity.X = -(m_velocity.X * bounciness);
} else if (av.Z > av.Y && av.Z > av.X) {
m_velocity.Z = -(m_velocity.Z * bounciness);
} else { // well now we're in a bit of a pickle
m_velocity = -(m_velocity * bounciness);
}
}
} else {
m_velocity = p_velocity / BS;
}
m_pos = p_pos / BS;
} else {
// apply velocity and acceleration to position
m_pos += (m_velocity + m_acceleration * 0.5f * dtime) * dtime;
// apply acceleration to velocity
m_velocity += m_acceleration * dtime;
}
if (m_animation.type != TAT_NONE) {
m_animation_time += dtime;
int frame_length_i, frame_count;
m_animation.determineParams(
m_material.getTexture(0)->getSize(),
&frame_count, &frame_length_i, NULL);
float frame_length = frame_length_i / 1000.0;
while (m_animation_time > frame_length) {
m_animation_frame++;
m_animation_time -= frame_length;
}
}
// animate particle alpha in accordance with settings
if (m_texture.tex != nullptr)
m_alpha = m_texture.tex -> alpha.blend(m_time / (m_expiration+0.1f));
else
m_alpha = 1.f;
// Update lighting
updateLight();
// Update model
updateVertices();
// Update position -- see #10398
v3s16 camera_offset = m_env->getCameraOffset();
setPosition(m_pos*BS - intToFloat(camera_offset, BS));
}
void Particle::updateLight()
{
u8 light = 0;
bool pos_ok;
v3s16 p = v3s16(
floor(m_pos.X+0.5),
floor(m_pos.Y+0.5),
floor(m_pos.Z+0.5)
);
MapNode n = m_env->getClientMap().getNode(p, &pos_ok);
if (pos_ok)
light = n.getLightBlend(m_env->getDayNightRatio(),
m_gamedef->ndef()->getLightingFlags(n));
else
light = blend_light(m_env->getDayNightRatio(), LIGHT_SUN, 0);
u8 m_light = decode_light(light + m_glow);
m_color.set(m_alpha*255,
m_light * m_base_color.getRed() / 255,
m_light * m_base_color.getGreen() / 255,
m_light * m_base_color.getBlue() / 255);
}
void Particle::updateVertices()
{
f32 tx0, tx1, ty0, ty1;
v2f scale;
if (m_texture.tex != nullptr)
scale = m_texture.tex -> scale.blend(m_time / (m_expiration+0.1));
else
scale = v2f(1.f, 1.f);
if (m_animation.type != TAT_NONE) {
const v2u32 texsize = m_material.getTexture(0)->getSize();
v2f texcoord, framesize_f;
v2u32 framesize;
texcoord = m_animation.getTextureCoords(texsize, m_animation_frame);
m_animation.determineParams(texsize, NULL, NULL, &framesize);
framesize_f = v2f(framesize.X / (float) texsize.X, framesize.Y / (float) texsize.Y);
tx0 = m_texpos.X + texcoord.X;
tx1 = m_texpos.X + texcoord.X + framesize_f.X * m_texsize.X;
ty0 = m_texpos.Y + texcoord.Y;
ty1 = m_texpos.Y + texcoord.Y + framesize_f.Y * m_texsize.Y;
} else {
tx0 = m_texpos.X;
tx1 = m_texpos.X + m_texsize.X;
ty0 = m_texpos.Y;
ty1 = m_texpos.Y + m_texsize.Y;
}
auto half = m_size * .5f,
hx = half * scale.X,
hy = half * scale.Y;
m_vertices[0] = video::S3DVertex(-hx, -hy,
0, 0, 0, 0, m_color, tx0, ty1);
m_vertices[1] = video::S3DVertex(hx, -hy,
0, 0, 0, 0, m_color, tx1, ty1);
m_vertices[2] = video::S3DVertex(hx, hy,
0, 0, 0, 0, m_color, tx1, ty0);
m_vertices[3] = video::S3DVertex(-hx, hy,
0, 0, 0, 0, m_color, tx0, ty0);
// see #10398
// v3s16 camera_offset = m_env->getCameraOffset();
// particle position is now handled by step()
m_box.reset(v3f());
for (video::S3DVertex &vertex : m_vertices) {
if (m_vertical) {
v3f ppos = m_player->getPosition()/BS;
vertex.Pos.rotateXZBy(std::atan2(ppos.Z - m_pos.Z, ppos.X - m_pos.X) /
core::DEGTORAD + 90);
} else {
vertex.Pos.rotateYZBy(m_player->getPitch());
vertex.Pos.rotateXZBy(m_player->getYaw());
}
m_box.addInternalPoint(vertex.Pos);
}
}
/*
ParticleSpawner
*/
ParticleSpawner::ParticleSpawner(
IGameDef *gamedef,
LocalPlayer *player,
const ParticleSpawnerParameters &p,
u16 attached_id,
std::unique_ptr<ClientTexture[]>& texpool,
size_t texcount,
ParticleManager *p_manager
):
m_particlemanager(p_manager), p(p)
{
m_gamedef = gamedef;
m_player = player;
m_attached_id = attached_id;
m_texpool = std::move(texpool);
m_texcount = texcount;
m_time = 0;
m_active = 0;
m_dying = false;
m_spawntimes.reserve(p.amount + 1);
for (u16 i = 0; i <= p.amount; i++) {
float spawntime = myrand_float() * p.time;
m_spawntimes.push_back(spawntime);
}
size_t max_particles = 0; // maximum number of particles likely to be visible at any given time
if (p.time != 0) {
auto maxGenerations = p.time / std::min(p.exptime.start.min, p.exptime.end.min);
max_particles = p.amount / maxGenerations;
} else {
auto longestLife = std::max(p.exptime.start.max, p.exptime.end.max);
max_particles = p.amount * longestLife;
}
p_manager->reserveParticleSpace(max_particles * 1.2);
}
namespace {
GenericCAO *findObjectByID(ClientEnvironment *env, u16 id) {
if (id == 0)
return nullptr;
return env->getGenericCAO(id);
}
}
void ParticleSpawner::spawnParticle(ClientEnvironment *env, float radius,
const core::matrix4 *attached_absolute_pos_rot_matrix)
{
float fac = 0;
if (p.time != 0) { // ensure safety from divide-by-zeroes
fac = m_time / (p.time+0.1f);
}
auto r_pos = p.pos.blend(fac);
auto r_vel = p.vel.blend(fac);
auto r_acc = p.acc.blend(fac);
auto r_drag = p.drag.blend(fac);
auto r_radius = p.radius.blend(fac);
auto r_jitter = p.jitter.blend(fac);
auto r_bounce = p.bounce.blend(fac);
v3f attractor_origin = p.attractor_origin.blend(fac);
v3f attractor_direction = p.attractor_direction.blend(fac);
auto attractor_obj = findObjectByID(env, p.attractor_attachment);
auto attractor_direction_obj = findObjectByID(env, p.attractor_direction_attachment);
auto r_exp = p.exptime.blend(fac);
auto r_size = p.size.blend(fac);
auto r_attract = p.attract.blend(fac);
auto attract = r_attract.pickWithin();
v3f ppos = m_player->getPosition() / BS;
v3f pos = r_pos.pickWithin();
v3f sphere_radius = r_radius.pickWithin();
// Need to apply this first or the following check
// will be wrong for attached spawners
if (attached_absolute_pos_rot_matrix) {
pos *= BS;
attached_absolute_pos_rot_matrix->transformVect(pos);
pos /= BS;
v3s16 camera_offset = m_particlemanager->m_env->getCameraOffset();
pos.X += camera_offset.X;
pos.Y += camera_offset.Y;
pos.Z += camera_offset.Z;
}
if (pos.getDistanceFromSQ(ppos) > radius*radius)
return;
// Parameters for the single particle we're about to spawn
ParticleParameters pp;
pp.pos = pos;
pp.vel = r_vel.pickWithin();
pp.acc = r_acc.pickWithin();
pp.drag = r_drag.pickWithin();
pp.jitter = r_jitter;
pp.bounce = r_bounce;
if (attached_absolute_pos_rot_matrix) {
// Apply attachment rotation
attached_absolute_pos_rot_matrix->rotateVect(pp.vel);
attached_absolute_pos_rot_matrix->rotateVect(pp.acc);
}
if (attractor_obj)
attractor_origin += attractor_obj->getPosition() / BS;
if (attractor_direction_obj) {
auto *attractor_absolute_pos_rot_matrix = attractor_direction_obj->getAbsolutePosRotMatrix();
if (attractor_absolute_pos_rot_matrix)
attractor_absolute_pos_rot_matrix->rotateVect(attractor_direction);
}
pp.expirationtime = r_exp.pickWithin();
if (sphere_radius != v3f()) {
f32 l = sphere_radius.getLength();
v3f mag = sphere_radius;
mag.normalize();
v3f ofs = v3f(l,0,0);
ofs.rotateXZBy(myrand_range(0.f,360.f));
ofs.rotateYZBy(myrand_range(0.f,360.f));
ofs.rotateXYBy(myrand_range(0.f,360.f));
pp.pos += ofs * mag;
}
if (p.attractor_kind != ParticleParamTypes::AttractorKind::none && attract != 0) {
v3f dir;
f32 dist = 0; /* =0 necessary to silence warning */
switch (p.attractor_kind) {
case ParticleParamTypes::AttractorKind::none:
break;
case ParticleParamTypes::AttractorKind::point: {
dist = pp.pos.getDistanceFrom(attractor_origin);
dir = pp.pos - attractor_origin;
dir.normalize();
break;
}
case ParticleParamTypes::AttractorKind::line: {
// https://github.com/minetest/minetest/issues/11505#issuecomment-915612700
const auto& lorigin = attractor_origin;
v3f ldir = attractor_direction;
ldir.normalize();
auto origin_to_point = pp.pos - lorigin;
auto scalar_projection = origin_to_point.dotProduct(ldir);
auto point_on_line = lorigin + (ldir * scalar_projection);
dist = pp.pos.getDistanceFrom(point_on_line);
dir = (point_on_line - pp.pos);
dir.normalize();
dir *= -1; // flip it around so strength=1 attracts, not repulses
break;
}
case ParticleParamTypes::AttractorKind::plane: {
// https://github.com/minetest/minetest/issues/11505#issuecomment-915612700
const v3f& porigin = attractor_origin;
v3f normal = attractor_direction;
normal.normalize();
v3f point_to_origin = porigin - pp.pos;
f32 factor = normal.dotProduct(point_to_origin);
if (numericAbsolute(factor) == 0.0f) {
dir = normal;
} else {
factor = numericSign(factor);
dir = normal * factor;
}
dist = numericAbsolute(normal.dotProduct(pp.pos - porigin));
dir *= -1; // flip it around so strength=1 attracts, not repulses
break;
}
}
f32 speedTowards = numericAbsolute(attract) * dist;
v3f avel = dir * speedTowards;
if (attract > 0 && speedTowards > 0) {
avel *= -1;
if (p.attractor_kill) {
// make sure the particle dies after crossing the attractor threshold
f32 timeToCenter = dist / speedTowards;
if (timeToCenter < pp.expirationtime)
pp.expirationtime = timeToCenter;
}
}
pp.vel += avel;
}
p.copyCommon(pp);
ClientTexRef texture;
v2f texpos, texsize;
video::SColor color(0xFFFFFFFF);
if (p.node.getContent() != CONTENT_IGNORE) {
const ContentFeatures &f =
m_particlemanager->m_env->getGameDef()->ndef()->get(p.node);
if (!ParticleManager::getNodeParticleParams(p.node, f, pp, &texture.ref,
texpos, texsize, &color, p.node_tile))
return;
} else {
if (m_texcount == 0)
return;
texture = decltype(texture)(m_texpool[m_texcount == 1 ? 0 : myrand_range(0,m_texcount-1)]);
texpos = v2f(0.0f, 0.0f);
texsize = v2f(1.0f, 1.0f);
if (texture.tex->animated)
pp.animation = texture.tex->animation;
}
// synchronize animation length with particle life if desired
if (pp.animation.type != TAT_NONE) {
// FIXME: this should be moved into a TileAnimationParams class method
if (pp.animation.type == TAT_VERTICAL_FRAMES &&
pp.animation.vertical_frames.length < 0) {
auto& a = pp.animation.vertical_frames;
// we add a tiny extra value to prevent the first frame
// from flickering back on just before the particle dies
a.length = (pp.expirationtime / -a.length) + 0.1;
} else if (pp.animation.type == TAT_SHEET_2D &&
pp.animation.sheet_2d.frame_length < 0) {
auto& a = pp.animation.sheet_2d;
auto frames = a.frames_w * a.frames_h;
auto runtime = (pp.expirationtime / -a.frame_length) + 0.1;
pp.animation.sheet_2d.frame_length = frames / runtime;
}
}
// Allow keeping default random size
if (p.size.start.max > 0.0f || p.size.end.max > 0.0f)
pp.size = r_size.pickWithin();
++m_active;
auto pa = new Particle(
m_gamedef,
m_player,
env,
pp,
texture,
texpos,
texsize,
color
);
pa->m_parent = this;
m_particlemanager->addParticle(pa);
}
void ParticleSpawner::step(float dtime, ClientEnvironment *env)
{
m_time += dtime;
static thread_local const float radius =
g_settings->getS16("max_block_send_distance") * MAP_BLOCKSIZE;
bool unloaded = false;
const core::matrix4 *attached_absolute_pos_rot_matrix = nullptr;
if (m_attached_id) {
if (GenericCAO *attached = env->getGenericCAO(m_attached_id)) {
attached_absolute_pos_rot_matrix = attached->getAbsolutePosRotMatrix();
} else {
unloaded = true;
}
}
if (p.time != 0) {
// Spawner exists for a predefined timespan
for (auto i = m_spawntimes.begin(); i != m_spawntimes.end(); ) {
if ((*i) <= m_time && p.amount > 0) {
--p.amount;
// Pretend to, but don't actually spawn a particle if it is
// attached to an unloaded object or distant from player.
if (!unloaded)
spawnParticle(env, radius, attached_absolute_pos_rot_matrix);
i = m_spawntimes.erase(i);
} else {
++i;
}
}
} else {
// Spawner exists for an infinity timespan, spawn on a per-second base
// Skip this step if attached to an unloaded object
if (unloaded)
return;
for (int i = 0; i <= p.amount; i++) {
if (myrand_float() < dtime)
spawnParticle(env, radius, attached_absolute_pos_rot_matrix);
}
}
}
/*
ParticleManager
*/
ParticleManager::ParticleManager(ClientEnvironment *env) :
m_env(env)
{}
ParticleManager::~ParticleManager()
{
clearAll();
}
void ParticleManager::step(float dtime)
{
stepParticles (dtime);
stepSpawners (dtime);
}
void ParticleManager::stepSpawners(float dtime)
{
MutexAutoLock lock(m_spawner_list_lock);
for (auto i = m_particle_spawners.begin(); i != m_particle_spawners.end();) {
if (i->second->getExpired()) {
// the particlespawner owns the textures, so we need to make
// sure there are no active particles before we free it
if (i->second->m_active == 0) {
delete i->second;
m_particle_spawners.erase(i++);
} else {
++i;
}
} else {
i->second->step(dtime, m_env);
++i;
}
}
}
void ParticleManager::stepParticles(float dtime)
{
MutexAutoLock lock(m_particle_list_lock);
for (auto i = m_particles.begin(); i != m_particles.end();) {
if ((*i)->get_expired()) {
if ((*i)->m_parent) {
assert((*i)->m_parent->m_active != 0);
--(*i)->m_parent->m_active;
}
(*i)->remove();
delete *i;
i = m_particles.erase(i);
} else {
(*i)->step(dtime);
++i;
}
}
}
void ParticleManager::clearAll()
{
MutexAutoLock lock(m_spawner_list_lock);
MutexAutoLock lock2(m_particle_list_lock);
for (auto i = m_particle_spawners.begin(); i != m_particle_spawners.end();) {
delete i->second;
m_particle_spawners.erase(i++);
}
for(auto i = m_particles.begin(); i != m_particles.end();)
{
(*i)->remove();
delete *i;
i = m_particles.erase(i);
}
}
void ParticleManager::handleParticleEvent(ClientEvent *event, Client *client,
LocalPlayer *player)
{
switch (event->type) {
case CE_DELETE_PARTICLESPAWNER: {
deleteParticleSpawner(event->delete_particlespawner.id);
// no allocated memory in delete event
break;
}
case CE_ADD_PARTICLESPAWNER: {
deleteParticleSpawner(event->add_particlespawner.id);
const ParticleSpawnerParameters &p = *event->add_particlespawner.p;
// texture pool
std::unique_ptr<ClientTexture[]> texpool = nullptr;
size_t txpsz = 0;
if (!p.texpool.empty()) {
txpsz = p.texpool.size();
texpool = decltype(texpool)(new ClientTexture [txpsz]);
for (size_t i = 0; i < txpsz; ++i) {
texpool[i] = ClientTexture(p.texpool[i], client->tsrc());
}
} else {
// no texpool in use, use fallback texture
txpsz = 1;
texpool = decltype(texpool)(new ClientTexture[1] {
ClientTexture(p.texture, client->tsrc())
});
}
auto toadd = new ParticleSpawner(client, player,
p,
event->add_particlespawner.attached_id,
texpool,
txpsz,
this);
addParticleSpawner(event->add_particlespawner.id, toadd);
delete event->add_particlespawner.p;
break;
}
case CE_SPAWN_PARTICLE: {
ParticleParameters &p = *event->spawn_particle;
ClientTexRef texture;
v2f texpos, texsize;
video::SColor color(0xFFFFFFFF);
f32 oldsize = p.size;
if (p.node.getContent() != CONTENT_IGNORE) {
const ContentFeatures &f = m_env->getGameDef()->ndef()->get(p.node);
getNodeParticleParams(p.node, f, p, &texture.ref, texpos,
texsize, &color, p.node_tile);
} else {
/* with no particlespawner to own the texture, we need
* to save it on the heap. it will be freed when the
* particle is destroyed */
auto texstore = new ClientTexture(p.texture, client->tsrc());
texture = ClientTexRef(*texstore);
texpos = v2f(0.0f, 0.0f);
texsize = v2f(1.0f, 1.0f);
}
// Allow keeping default random size
if (oldsize > 0.0f)
p.size = oldsize;
if (texture.ref) {
Particle *toadd = new Particle(client, player, m_env,
p, texture, texpos, texsize, color);
addParticle(toadd);
}
delete event->spawn_particle;
break;
}
default: break;
}
}
bool ParticleManager::getNodeParticleParams(const MapNode &n,
const ContentFeatures &f, ParticleParameters &p, video::ITexture **texture,
v2f &texpos, v2f &texsize, video::SColor *color, u8 tilenum)
{
// No particles for "airlike" nodes
if (f.drawtype == NDT_AIRLIKE)
return false;
// Texture
u8 texid;
if (tilenum > 0 && tilenum <= 6)
texid = tilenum - 1;
else
texid = myrand_range(0,5);
const TileLayer &tile = f.tiles[texid].layers[0];
p.animation.type = TAT_NONE;
// Only use first frame of animated texture
if (tile.material_flags & MATERIAL_FLAG_ANIMATION)
*texture = (*tile.frames)[0].texture;
else
*texture = tile.texture;
float size = (myrand_range(0,8)) / 64.0f;
p.size = BS * size;
if (tile.scale)
size /= tile.scale;
texsize = v2f(size * 2.0f, size * 2.0f);
texpos.X = (myrand_range(0,64)) / 64.0f - texsize.X;
texpos.Y = (myrand_range(0,64)) / 64.0f - texsize.Y;
if (tile.has_color)
*color = tile.color;
else
n.getColor(f, color);
return true;
}
// The final burst of particles when a node is finally dug, *not* particles
// spawned during the digging of a node.
void ParticleManager::addDiggingParticles(IGameDef *gamedef,
LocalPlayer *player, v3s16 pos, const MapNode &n, const ContentFeatures &f)
{
// No particles for "airlike" nodes
if (f.drawtype == NDT_AIRLIKE)
return;
for (u16 j = 0; j < 16; j++) {
addNodeParticle(gamedef, player, pos, n, f);
}
}
// During the digging of a node particles are spawned individually by this
// function, called from Game::handleDigging() in game.cpp.
void ParticleManager::addNodeParticle(IGameDef *gamedef,
LocalPlayer *player, v3s16 pos, const MapNode &n, const ContentFeatures &f)
{
ParticleParameters p;
video::ITexture *ref = nullptr;
v2f texpos, texsize;
video::SColor color;
if (!getNodeParticleParams(n, f, p, &ref, texpos, texsize, &color))
return;
p.expirationtime = myrand_range(0, 100) / 100.0f;
// Physics
p.vel = v3f(
myrand_range(-1.5f,1.5f),
myrand_range(0.f,3.f),
myrand_range(-1.5f,1.5f)
);
p.acc = v3f(
0.0f,
-player->movement_gravity * player->physics_override.gravity / BS,
0.0f
);
p.pos = v3f(
(f32)pos.X + myrand_range(0.f, .5f) - .25f,
(f32)pos.Y + myrand_range(0.f, .5f) - .25f,
(f32)pos.Z + myrand_range(0.f, .5f) - .25f
);
Particle *toadd = new Particle(
gamedef,
player,
m_env,
p,
ClientTexRef(ref),
texpos,
texsize,
color);
addParticle(toadd);
}
void ParticleManager::reserveParticleSpace(size_t max_estimate)
{
MutexAutoLock lock(m_particle_list_lock);
m_particles.reserve(m_particles.size() + max_estimate);
}
void ParticleManager::addParticle(Particle *toadd)
{
MutexAutoLock lock(m_particle_list_lock);
m_particles.push_back(toadd);
}
void ParticleManager::addParticleSpawner(u64 id, ParticleSpawner *toadd)
{
MutexAutoLock lock(m_spawner_list_lock);
m_particle_spawners[id] = toadd;
}
void ParticleManager::deleteParticleSpawner(u64 id)
{
MutexAutoLock lock(m_spawner_list_lock);
auto it = m_particle_spawners.find(id);
if (it != m_particle_spawners.end()) {
it->second->setDying();
}
}
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