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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 "constants.h"
- #include "debug.h"
- #include "main.h" // For g_profiler and g_settings
- #include "settings.h"
- #include "tile.h"
- #include "gamedef.h"
- #include "collision.h"
- #include <stdlib.h>
- #include "util/numeric.h"
- #include "light.h"
- #include "environment.h"
- #include "clientmap.h"
- #include "mapnode.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);
- }
- std::vector<Particle*> all_particles;
- std::map<u32, ParticleSpawner*> all_particlespawners;
- Particle::Particle(
- IGameDef *gamedef,
- scene::ISceneManager* smgr,
- LocalPlayer *player,
- ClientEnvironment &env,
- v3f pos,
- v3f velocity,
- v3f acceleration,
- float expirationtime,
- float size,
- bool collisiondetection,
- bool vertical,
- video::ITexture *texture,
- v2f texpos,
- v2f texsize
- ):
- scene::ISceneNode(smgr->getRootSceneNode(), smgr)
- {
- // 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;
- // Particle related
- m_pos = pos;
- m_velocity = velocity;
- m_acceleration = acceleration;
- m_expiration = expirationtime;
- m_time = 0;
- m_player = player;
- m_size = size;
- m_collisiondetection = collisiondetection;
- m_vertical = vertical;
- // Irrlicht stuff
- m_collisionbox = core::aabbox3d<f32>
- (-size/2,-size/2,-size/2,size/2,size/2,size/2);
- this->setAutomaticCulling(scene::EAC_OFF);
- // Init lighting
- updateLight();
- // Init model
- updateVertices();
- all_particles.push_back(this);
- }
- Particle::~Particle()
- {
- }
- void Particle::OnRegisterSceneNode()
- {
- if (IsVisible)
- {
- SceneManager->registerNodeForRendering
- (this, scene::ESNRP_TRANSPARENT);
- SceneManager->registerNodeForRendering
- (this, scene::ESNRP_SOLID);
- }
- ISceneNode::OnRegisterSceneNode();
- }
- void Particle::render()
- {
- // TODO: Render particles in front of water and the selectionbox
- 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)
- {
- core::aabbox3d<f32> box = m_collisionbox;
- v3f p_pos = m_pos*BS;
- v3f p_velocity = m_velocity*BS;
- v3f p_acceleration = m_acceleration*BS;
- collisionMoveSimple(m_env, m_gamedef,
- BS*0.5, box,
- 0, dtime,
- p_pos, p_velocity, p_acceleration);
- m_pos = p_pos/BS;
- m_velocity = p_velocity/BS;
- m_acceleration = p_acceleration/BS;
- }
- else
- {
- m_velocity += m_acceleration * dtime;
- m_pos += m_velocity * dtime;
- }
- // Update lighting
- updateLight();
- // Update model
- updateVertices();
- }
- void Particle::updateLight()
- {
- u8 light = 0;
- try{
- 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);
- light = n.getLightBlend(m_env->getDayNightRatio(), m_gamedef->ndef());
- }
- catch(InvalidPositionException &e){
- light = blend_light(m_env->getDayNightRatio(), LIGHT_SUN, 0);
- }
- m_light = decode_light(light);
- }
- void Particle::updateVertices()
- {
- video::SColor c(255, m_light, m_light, m_light);
- f32 tx0 = m_texpos.X;
- f32 tx1 = m_texpos.X + m_texsize.X;
- f32 ty0 = m_texpos.Y;
- f32 ty1 = m_texpos.Y + m_texsize.Y;
- m_vertices[0] = video::S3DVertex(-m_size/2,-m_size/2,0, 0,0,0,
- c, tx0, ty1);
- m_vertices[1] = video::S3DVertex(m_size/2,-m_size/2,0, 0,0,0,
- c, tx1, ty1);
- m_vertices[2] = video::S3DVertex(m_size/2,m_size/2,0, 0,0,0,
- c, tx1, ty0);
- m_vertices[3] = video::S3DVertex(-m_size/2,m_size/2,0, 0,0,0,
- c, tx0, ty0);
- v3s16 camera_offset = m_env->getCameraOffset();
- for(u16 i=0; i<4; i++)
- {
- if (m_vertical) {
- v3f ppos = m_player->getPosition()/BS;
- m_vertices[i].Pos.rotateXZBy(atan2(ppos.Z-m_pos.Z, ppos.X-m_pos.X)/core::DEGTORAD+90);
- } else {
- m_vertices[i].Pos.rotateYZBy(m_player->getPitch());
- m_vertices[i].Pos.rotateXZBy(m_player->getYaw());
- }
- m_box.addInternalPoint(m_vertices[i].Pos);
- m_vertices[i].Pos += m_pos*BS - intToFloat(camera_offset, BS);
- }
- }
- /*
- Helpers
- */
- void allparticles_step (float dtime)
- {
- for(std::vector<Particle*>::iterator i = all_particles.begin();
- i != all_particles.end();)
- {
- if ((*i)->get_expired())
- {
- (*i)->remove();
- delete *i;
- i = all_particles.erase(i);
- }
- else
- {
- (*i)->step(dtime);
- i++;
- }
- }
- }
- void addDiggingParticles(IGameDef* gamedef, scene::ISceneManager* smgr,
- LocalPlayer *player, ClientEnvironment &env, v3s16 pos,
- const TileSpec tiles[])
- {
- for (u16 j = 0; j < 32; j++) // set the amount of particles here
- {
- addNodeParticle(gamedef, smgr, player, env, pos, tiles);
- }
- }
- void addPunchingParticles(IGameDef* gamedef, scene::ISceneManager* smgr,
- LocalPlayer *player, ClientEnvironment &env,
- v3s16 pos, const TileSpec tiles[])
- {
- addNodeParticle(gamedef, smgr, player, env, pos, tiles);
- }
- // add a particle of a node
- // used by digging and punching particles
- void addNodeParticle(IGameDef* gamedef, scene::ISceneManager* smgr,
- LocalPlayer *player, ClientEnvironment &env, v3s16 pos,
- const TileSpec tiles[])
- {
- // Texture
- u8 texid = myrand_range(0,5);
- video::ITexture *texture = tiles[texid].texture;
- // Only use first frame of animated texture
- f32 ymax = 1;
- if(tiles[texid].material_flags & MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES)
- ymax /= tiles[texid].animation_frame_count;
- float size = rand()%64/512.;
- float visual_size = BS*size;
- v2f texsize(size*2, ymax*size*2);
- v2f texpos;
- texpos.X = ((rand()%64)/64.-texsize.X);
- texpos.Y = ymax*((rand()%64)/64.-texsize.Y);
- // Physics
- v3f velocity( (rand()%100/50.-1)/1.5,
- rand()%100/35.,
- (rand()%100/50.-1)/1.5);
- v3f acceleration(0,-9,0);
- v3f particlepos = v3f(
- (f32)pos.X+rand()%100/200.-0.25,
- (f32)pos.Y+rand()%100/200.-0.25,
- (f32)pos.Z+rand()%100/200.-0.25
- );
- new Particle(
- gamedef,
- smgr,
- player,
- env,
- particlepos,
- velocity,
- acceleration,
- rand()%100/100., // expiration time
- visual_size,
- true,
- false,
- texture,
- texpos,
- texsize);
- }
- /*
- ParticleSpawner
- */
- ParticleSpawner::ParticleSpawner(IGameDef* gamedef, scene::ISceneManager *smgr, 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 vertical, video::ITexture *texture, u32 id)
- {
- m_gamedef = gamedef;
- m_smgr = smgr;
- 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_vertical = vertical;
- m_texture = texture;
- m_time = 0;
- for (u16 i = 0; i<=m_amount; i++)
- {
- float spawntime = (float)rand()/(float)RAND_MAX*m_spawntime;
- m_spawntimes.push_back(spawntime);
- }
- all_particlespawners.insert(std::pair<u32, ParticleSpawner*>(id, this));
- }
- ParticleSpawner::~ParticleSpawner() {}
- void ParticleSpawner::step(float dtime, ClientEnvironment &env)
- {
- m_time += dtime;
- 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--;
- v3f pos = random_v3f(m_minpos, m_maxpos);
- v3f vel = random_v3f(m_minvel, m_maxvel);
- v3f acc = random_v3f(m_minacc, m_maxacc);
- float exptime = rand()/(float)RAND_MAX
- *(m_maxexptime-m_minexptime)
- +m_minexptime;
- float size = rand()/(float)RAND_MAX
- *(m_maxsize-m_minsize)
- +m_minsize;
- new Particle(
- m_gamedef,
- m_smgr,
- m_player,
- env,
- pos,
- vel,
- acc,
- exptime,
- size,
- m_collisiondetection,
- m_vertical,
- m_texture,
- v2f(0.0, 0.0),
- v2f(1.0, 1.0));
- i = m_spawntimes.erase(i);
- }
- else
- {
- i++;
- }
- }
- }
- else // Spawner exists for an infinity timespan, spawn on a per-second base
- {
- for (int i = 0; i <= m_amount; i++)
- {
- if (rand()/(float)RAND_MAX < dtime)
- {
- v3f pos = random_v3f(m_minpos, m_maxpos);
- v3f vel = random_v3f(m_minvel, m_maxvel);
- v3f acc = random_v3f(m_minacc, m_maxacc);
- float exptime = rand()/(float)RAND_MAX
- *(m_maxexptime-m_minexptime)
- +m_minexptime;
- float size = rand()/(float)RAND_MAX
- *(m_maxsize-m_minsize)
- +m_minsize;
- new Particle(
- m_gamedef,
- m_smgr,
- m_player,
- env,
- pos,
- vel,
- acc,
- exptime,
- size,
- m_collisiondetection,
- m_vertical,
- m_texture,
- v2f(0.0, 0.0),
- v2f(1.0, 1.0));
- }
- }
- }
- }
- void allparticlespawners_step (float dtime, ClientEnvironment &env)
- {
- for(std::map<u32, ParticleSpawner*>::iterator i =
- all_particlespawners.begin();
- i != all_particlespawners.end();)
- {
- if (i->second->get_expired())
- {
- delete i->second;
- all_particlespawners.erase(i++);
- }
- else
- {
- i->second->step(dtime, env);
- i++;
- }
- }
- }
- void delete_particlespawner (u32 id)
- {
- if (all_particlespawners.find(id) != all_particlespawners.end())
- {
- delete all_particlespawners.find(id)->second;
- all_particlespawners.erase(id);
- }
- }
- void clear_particles ()
- {
- for(std::map<u32, ParticleSpawner*>::iterator i =
- all_particlespawners.begin();
- i != all_particlespawners.end();)
- {
- delete i->second;
- all_particlespawners.erase(i++);
- }
- for(std::vector<Particle*>::iterator i =
- all_particles.begin();
- i != all_particles.end();)
- {
- (*i)->remove();
- delete *i;
- i = all_particles.erase(i);
- }
- }
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