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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"
- /*
- Utility
- */
- static f32 random_f32(f32 min, f32 max)
- {
- return rand() / (float)RAND_MAX * (max - min) + min;
- }
- static v3f random_v3f(v3f min, v3f max)
- {
- return v3f(
- random_f32(min.X, max.X),
- random_f32(min.Y, max.Y),
- random_f32(min.Z, max.Z));
- }
- /*
- Particle
- */
- Particle::Particle(
- IGameDef *gamedef,
- LocalPlayer *player,
- ClientEnvironment *env,
- const ParticleParameters &p,
- video::ITexture *texture,
- v2f texpos,
- v2f texsize,
- video::SColor color
- ):
- scene::ISceneNode(((Client *)gamedef)->getSceneManager()->getRootSceneNode(),
- ((Client *)gamedef)->getSceneManager())
- {
- // Misc
- m_gamedef = gamedef;
- m_env = env;
- // Texture
- m_material.setFlag(video::EMF_LIGHTING, false);
- m_material.setFlag(video::EMF_BACK_FACE_CULLING, false);
- m_material.setFlag(video::EMF_BILINEAR_FILTER, false);
- m_material.setFlag(video::EMF_FOG_ENABLE, true);
- m_material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
- m_material.setTexture(0, texture);
- 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_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;
- // 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();
- }
- 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;
- 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);
- if (m_collision_removal && r.collides) {
- // force expiration of the particle
- m_expiration = -1.0;
- } else {
- m_pos = p_pos / BS;
- m_velocity = p_velocity / BS;
- }
- } else {
- m_velocity += m_acceleration * dtime;
- m_pos += m_velocity * 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;
- }
- }
- // Update lighting
- updateLight();
- // Update model
- updateVertices();
- }
- 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());
- else
- light = blend_light(m_env->getDayNightRatio(), LIGHT_SUN, 0);
- u8 m_light = decode_light(light + m_glow);
- m_color.set(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;
- 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;
- }
- m_vertices[0] = video::S3DVertex(-m_size / 2, -m_size / 2,
- 0, 0, 0, 0, m_color, tx0, ty1);
- m_vertices[1] = video::S3DVertex(m_size / 2, -m_size / 2,
- 0, 0, 0, 0, m_color, tx1, ty1);
- m_vertices[2] = video::S3DVertex(m_size / 2, m_size / 2,
- 0, 0, 0, 0, m_color, tx1, ty0);
- m_vertices[3] = video::S3DVertex(-m_size / 2, m_size / 2,
- 0, 0, 0, 0, m_color, tx0, ty0);
- v3s16 camera_offset = m_env->getCameraOffset();
- 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);
- vertex.Pos += m_pos*BS - intToFloat(camera_offset, BS);
- }
- }
- /*
- ParticleSpawner
- */
- ParticleSpawner::ParticleSpawner(
- IGameDef *gamedef,
- LocalPlayer *player,
- const ParticleSpawnerParameters &p,
- u16 attached_id,
- video::ITexture *texture,
- ParticleManager *p_manager
- ):
- m_particlemanager(p_manager), p(p)
- {
- m_gamedef = gamedef;
- m_player = player;
- m_attached_id = attached_id;
- m_texture = texture;
- m_time = 0;
- m_spawntimes.reserve(p.amount + 1);
- for (u16 i = 0; i <= p.amount; i++) {
- float spawntime = rand() / (float)RAND_MAX * p.time;
- m_spawntimes.push_back(spawntime);
- }
- }
- void ParticleSpawner::spawnParticle(ClientEnvironment *env, float radius,
- const core::matrix4 *attached_absolute_pos_rot_matrix)
- {
- v3f ppos = m_player->getPosition() / BS;
- v3f pos = random_v3f(p.minpos, p.maxpos);
- // 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.getDistanceFrom(ppos) > radius)
- return;
- // Parameters for the single particle we're about to spawn
- ParticleParameters pp;
- pp.pos = pos;
- pp.vel = random_v3f(p.minvel, p.maxvel);
- pp.acc = random_v3f(p.minacc, p.maxacc);
- 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);
- }
- pp.expirationtime = random_f32(p.minexptime, p.maxexptime);
- p.copyCommon(pp);
- video::ITexture *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,
- texpos, texsize, &color, p.node_tile))
- return;
- } else {
- texture = m_texture;
- texpos = v2f(0.0f, 0.0f);
- texsize = v2f(1.0f, 1.0f);
- }
- // Allow keeping default random size
- if (p.maxsize > 0.0f)
- pp.size = random_f32(p.minsize, p.maxsize);
- m_particlemanager->addParticle(new Particle(
- m_gamedef,
- m_player,
- env,
- pp,
- texture,
- texpos,
- texsize,
- color
- ));
- }
- 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 = dynamic_cast<GenericCAO *>(env->getActiveObject(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 (rand() / (float)RAND_MAX < 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->get_expired()) {
- delete i->second;
- m_particle_spawners.erase(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()) {
- (*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;
- video::ITexture *texture =
- client->tsrc()->getTextureForMesh(p.texture);
- auto toadd = new ParticleSpawner(client, player,
- p,
- event->add_particlespawner.attached_id,
- texture,
- this);
- addParticleSpawner(event->add_particlespawner.id, toadd);
- delete event->add_particlespawner.p;
- break;
- }
- case CE_SPAWN_PARTICLE: {
- ParticleParameters &p = *event->spawn_particle;
- video::ITexture *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);
- if (!getNodeParticleParams(p.node, f, p, &texture, texpos,
- texsize, &color, p.node_tile))
- texture = nullptr;
- } else {
- texture = client->tsrc()->getTextureForMesh(p.texture);
- 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) {
- 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 = rand() % 6;
- 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 = (rand() % 8) / 64.0f;
- p.size = BS * size;
- if (tile.scale)
- size /= tile.scale;
- texsize = v2f(size * 2.0f, size * 2.0f);
- texpos.X = (rand() % 64) / 64.0f - texsize.X;
- texpos.Y = (rand() % 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 *texture;
- v2f texpos, texsize;
- video::SColor color;
- if (!getNodeParticleParams(n, f, p, &texture, texpos, texsize, &color))
- return;
- p.expirationtime = (rand() % 100) / 100.0f;
- // Physics
- p.vel = v3f(
- (rand() % 150) / 50.0f - 1.5f,
- (rand() % 150) / 50.0f,
- (rand() % 150) / 50.0f - 1.5f
- );
- p.acc = v3f(
- 0.0f,
- -player->movement_gravity * player->physics_override_gravity / BS,
- 0.0f
- );
- p.pos = v3f(
- (f32)pos.X + (rand() % 100) / 200.0f - 0.25f,
- (f32)pos.Y + (rand() % 100) / 200.0f - 0.25f,
- (f32)pos.Z + (rand() % 100) / 200.0f - 0.25f
- );
- Particle *toadd = new Particle(
- gamedef,
- player,
- m_env,
- p,
- texture,
- texpos,
- texsize,
- color);
- addParticle(toadd);
- }
- 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()) {
- delete it->second;
- m_particle_spawners.erase(it);
- }
- }
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