minetest/src/client/particles.cpp
ANAND 095f26a4f8 particles.cpp: Fix code-style
Mainly spacing and pointer placement
2019-08-31 19:05:53 +02:00

673 lines
17 KiB
C++

/*
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
*/
v3f random_v3f(v3f min, v3f max)
{
return v3f(
rand() / (float)RAND_MAX * (max.X - min.X) + min.X,
rand() / (float)RAND_MAX * (max.Y - min.Y) + min.Y,
rand() / (float)RAND_MAX * (max.Z - min.Z) + min.Z);
}
Particle::Particle(
IGameDef *gamedef,
LocalPlayer *player,
ClientEnvironment *env,
v3f pos,
v3f velocity,
v3f acceleration,
float expirationtime,
float size,
bool collisiondetection,
bool collision_removal,
bool object_collision,
bool vertical,
video::ITexture *texture,
v2f texpos,
v2f texsize,
const struct TileAnimationParams &anim,
u8 glow,
video::SColor color
):
scene::ISceneNode(RenderingEngine::get_scene_manager()->getRootSceneNode(),
RenderingEngine::get_scene_manager())
{
// 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 = anim;
// Color
m_base_color = color;
m_color = color;
// Particle related
m_pos = pos;
m_velocity = velocity;
m_acceleration = acceleration;
m_expiration = expirationtime;
m_player = player;
m_size = size;
m_collisiondetection = collisiondetection;
m_collision_removal = collision_removal;
m_object_collision = object_collision;
m_vertical = vertical;
m_glow = glow;
// Irrlicht stuff
m_collisionbox = aabb3f(
-size / 2,
-size / 2,
-size / 2,
size / 2,
size / 2,
size / 2);
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,
u16 amount,
float time,
v3f minpos, v3f maxpos,
v3f minvel, v3f maxvel,
v3f minacc, v3f maxacc,
float minexptime, float maxexptime,
float minsize, float maxsize,
bool collisiondetection,
bool collision_removal,
bool object_collision,
u16 attached_id,
bool vertical,
video::ITexture *texture,
const struct TileAnimationParams &anim,
u8 glow,
ParticleManager *p_manager
):
m_particlemanager(p_manager)
{
m_gamedef = gamedef;
m_player = player;
m_amount = amount;
m_spawntime = time;
m_minpos = minpos;
m_maxpos = maxpos;
m_minvel = minvel;
m_maxvel = maxvel;
m_minacc = minacc;
m_maxacc = maxacc;
m_minexptime = minexptime;
m_maxexptime = maxexptime;
m_minsize = minsize;
m_maxsize = maxsize;
m_collisiondetection = collisiondetection;
m_collision_removal = collision_removal;
m_object_collision = object_collision;
m_attached_id = attached_id;
m_vertical = vertical;
m_texture = texture;
m_time = 0;
m_animation = anim;
m_glow = glow;
for (u16 i = 0; i <= m_amount; i++)
{
float spawntime = (float)rand() / (float)RAND_MAX * m_spawntime;
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(m_minpos, m_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;
v3f vel = random_v3f(m_minvel, m_maxvel);
v3f acc = random_v3f(m_minacc, m_maxacc);
if (attached_absolute_pos_rot_matrix) {
// Apply attachment rotation
attached_absolute_pos_rot_matrix->rotateVect(vel);
attached_absolute_pos_rot_matrix->rotateVect(acc);
}
float exptime = rand() / (float)RAND_MAX
* (m_maxexptime - m_minexptime)
+ m_minexptime;
float size = rand() / (float)RAND_MAX
* (m_maxsize - m_minsize)
+ m_minsize;
m_particlemanager->addParticle(new Particle(
m_gamedef,
m_player,
env,
pos,
vel,
acc,
exptime,
size,
m_collisiondetection,
m_collision_removal,
m_object_collision,
m_vertical,
m_texture,
v2f(0.0, 0.0),
v2f(1.0, 1.0),
m_animation,
m_glow
));
}
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 (m_spawntime != 0) {
// Spawner exists for a predefined timespan
for (std::vector<float>::iterator i = m_spawntimes.begin();
i != m_spawntimes.end();) {
if ((*i) <= m_time && m_amount > 0) {
--m_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 <= m_amount; i++) {
if (rand() / (float)RAND_MAX < dtime)
spawnParticle(env, radius, attached_absolute_pos_rot_matrix);
}
}
}
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: {
MutexAutoLock lock(m_spawner_list_lock);
if (m_particle_spawners.find(event->delete_particlespawner.id) !=
m_particle_spawners.end()) {
delete m_particle_spawners.find(event->delete_particlespawner.id)->second;
m_particle_spawners.erase(event->delete_particlespawner.id);
}
// no allocated memory in delete event
break;
}
case CE_ADD_PARTICLESPAWNER: {
{
MutexAutoLock lock(m_spawner_list_lock);
if (m_particle_spawners.find(event->add_particlespawner.id) !=
m_particle_spawners.end()) {
delete m_particle_spawners.find(event->add_particlespawner.id)->second;
m_particle_spawners.erase(event->add_particlespawner.id);
}
}
video::ITexture *texture =
client->tsrc()->getTextureForMesh(*(event->add_particlespawner.texture));
auto toadd = new ParticleSpawner(client, player,
event->add_particlespawner.amount,
event->add_particlespawner.spawntime,
*event->add_particlespawner.minpos,
*event->add_particlespawner.maxpos,
*event->add_particlespawner.minvel,
*event->add_particlespawner.maxvel,
*event->add_particlespawner.minacc,
*event->add_particlespawner.maxacc,
event->add_particlespawner.minexptime,
event->add_particlespawner.maxexptime,
event->add_particlespawner.minsize,
event->add_particlespawner.maxsize,
event->add_particlespawner.collisiondetection,
event->add_particlespawner.collision_removal,
event->add_particlespawner.object_collision,
event->add_particlespawner.attached_id,
event->add_particlespawner.vertical,
texture,
event->add_particlespawner.animation,
event->add_particlespawner.glow,
this);
/* delete allocated content of event */
delete event->add_particlespawner.minpos;
delete event->add_particlespawner.maxpos;
delete event->add_particlespawner.minvel;
delete event->add_particlespawner.maxvel;
delete event->add_particlespawner.minacc;
delete event->add_particlespawner.texture;
delete event->add_particlespawner.maxacc;
{
MutexAutoLock lock(m_spawner_list_lock);
m_particle_spawners[event->add_particlespawner.id] = toadd;
}
break;
}
case CE_SPAWN_PARTICLE: {
video::ITexture *texture =
client->tsrc()->getTextureForMesh(*(event->spawn_particle.texture));
Particle *toadd = new Particle(client, player, m_env,
*event->spawn_particle.pos,
*event->spawn_particle.vel,
*event->spawn_particle.acc,
event->spawn_particle.expirationtime,
event->spawn_particle.size,
event->spawn_particle.collisiondetection,
event->spawn_particle.collision_removal,
event->spawn_particle.object_collision,
event->spawn_particle.vertical,
texture,
v2f(0.0, 0.0),
v2f(1.0, 1.0),
event->spawn_particle.animation,
event->spawn_particle.glow);
addParticle(toadd);
delete event->spawn_particle.pos;
delete event->spawn_particle.vel;
delete event->spawn_particle.acc;
delete event->spawn_particle.texture;
break;
}
default: break;
}
}
// 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)
{
// No particles for "airlike" nodes
if (f.drawtype == NDT_AIRLIKE)
return;
// Texture
u8 texid = myrand_range(0, 5);
const TileLayer &tile = f.tiles[texid].layers[0];
video::ITexture *texture;
struct TileAnimationParams anim;
anim.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;
float visual_size = BS * size;
if (tile.scale)
size /= tile.scale;
v2f texsize(size * 2.0f, size * 2.0f);
v2f texpos;
texpos.X = (rand() % 64) / 64.0f - texsize.X;
texpos.Y = (rand() % 64) / 64.0f - texsize.Y;
// Physics
v3f velocity(
(rand() % 150) / 50.0f - 1.5f,
(rand() % 150) / 50.0f,
(rand() % 150) / 50.0f - 1.5f
);
v3f acceleration(
0.0f,
-player->movement_gravity * player->physics_override_gravity / BS,
0.0f
);
v3f particlepos = 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
);
video::SColor color;
if (tile.has_color)
color = tile.color;
else
n.getColor(f, &color);
Particle *toadd = new Particle(
gamedef,
player,
m_env,
particlepos,
velocity,
acceleration,
(rand() % 100) / 100.0f, // expiration time
visual_size,
true,
false,
false,
false,
texture,
texpos,
texsize,
anim,
0,
color);
addParticle(toadd);
}
void ParticleManager::addParticle(Particle *toadd)
{
MutexAutoLock lock(m_particle_list_lock);
m_particles.push_back(toadd);
}