src/player.cpp

   1 /*
   2 Minetest-c55
   3 Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation; either version 2 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "player.h"
  21 #include "map.h"
  22 #include "connection.h"
  23 #include "constants.h"
  24 #include "utility.h"
  25 #ifndef SERVER
  26 #include <ITextSceneNode.h>
  27 #endif
  28 #include "main.h" // For g_settings
  29 #include "settings.h"
  30 #include "nodedef.h"
  31 #include "environment.h"
  32 #include "gamedef.h"
  33
  34 Player::Player(IGameDef *gamedef):
  35         touching_ground(false),
  36         in_water(false),
  37         in_water_stable(false),
  38         is_climbing(false),
  39         swimming_up(false),
  40         inventory_backup(NULL),
  41         craftresult_is_preview(true),
  42         hp(20),
  43         peer_id(PEER_ID_INEXISTENT),
  44 // protected
  45         m_gamedef(gamedef),
  46         m_selected_item(0),
  47         m_pitch(0),
  48         m_yaw(0),
  49         m_speed(0,0,0),
  50         m_position(0,0,0)
  51 {
  52         updateName("<not set>");
  53         resetInventory();
  54 }
  55
  56 Player::~Player()
  57 {
  58         delete inventory_backup;
  59 }
  60
  61 void Player::wieldItem(u16 item)
  62 {
  63         m_selected_item = item;
  64 }
  65
  66 void Player::resetInventory()
  67 {
  68         inventory.clear();
  69         inventory.addList("main", PLAYER_INVENTORY_SIZE);
  70         inventory.addList("craft", 9);
  71         inventory.addList("craftresult", 1);
  72 }
  73
  74 // Y direction is ignored
  75 void Player::accelerate(v3f target_speed, f32 max_increase)
  76 {
  77         v3f d_wanted = target_speed - m_speed;
  78         d_wanted.Y = 0;
  79         f32 dl_wanted = d_wanted.getLength();
  80         f32 dl = dl_wanted;
  81         if(dl > max_increase)
  82                 dl = max_increase;
  83
  84         v3f d = d_wanted.normalize() * dl;
  85
  86         m_speed.X += d.X;
  87         m_speed.Z += d.Z;
  88         //m_speed += d;
  89
  90 #if 0 // old code
  91         if(m_speed.X < target_speed.X - max_increase)
  92                 m_speed.X += max_increase;
  93         else if(m_speed.X > target_speed.X + max_increase)
  94                 m_speed.X -= max_increase;
  95         else if(m_speed.X < target_speed.X)
  96                 m_speed.X = target_speed.X;
  97         else if(m_speed.X > target_speed.X)
  98                 m_speed.X = target_speed.X;
  99
 100         if(m_speed.Z < target_speed.Z - max_increase)
 101                 m_speed.Z += max_increase;
 102         else if(m_speed.Z > target_speed.Z + max_increase)
 103                 m_speed.Z -= max_increase;
 104         else if(m_speed.Z < target_speed.Z)
 105                 m_speed.Z = target_speed.Z;
 106         else if(m_speed.Z > target_speed.Z)
 107                 m_speed.Z = target_speed.Z;
 108 #endif
 109 }
 110
 111 v3s16 Player::getLightPosition() const
 112 {
 113         return floatToInt(m_position + v3f(0,BS+BS/2,0), BS);
 114 }
 115
 116 void Player::serialize(std::ostream &os)
 117 {
 118         // Utilize a Settings object for storing values
 119         Settings args;
 120         args.setS32("version", 1);
 121         args.set("name", m_name);
 122         //args.set("password", m_password);
 123         args.setFloat("pitch", m_pitch);
 124         args.setFloat("yaw", m_yaw);
 125         args.setV3F("position", m_position);
 126         args.setBool("craftresult_is_preview", craftresult_is_preview);
 127         args.setS32("hp", hp);
 128
 129         args.writeLines(os);
 130
 131         os<<"PlayerArgsEnd\n";
 132
 133         // If actual inventory is backed up due to creative mode, save it
 134         // instead of the dummy creative mode inventory
 135         if(inventory_backup)
 136                 inventory_backup->serialize(os);
 137         else
 138                 inventory.serialize(os);
 139 }
 140
 141 void Player::deSerialize(std::istream &is)
 142 {
 143         Settings args;
 144
 145         for(;;)
 146         {
 147                 if(is.eof())
 148                         throw SerializationError
 149                                         ("Player::deSerialize(): PlayerArgsEnd not found");
 150                 std::string line;
 151                 std::getline(is, line);
 152                 std::string trimmedline = trim(line);
 153                 if(trimmedline == "PlayerArgsEnd")
 154                         break;
 155                 args.parseConfigLine(line);
 156         }
 157
 158         //args.getS32("version"); // Version field value not used
 159         std::string name = args.get("name");
 160         updateName(name.c_str());
 161         setPitch(args.getFloat("pitch"));
 162         setYaw(args.getFloat("yaw"));
 163         setPosition(args.getV3F("position"));
 164         try{
 165                 craftresult_is_preview = args.getBool("craftresult_is_preview");
 166         }catch(SettingNotFoundException &e){
 167                 craftresult_is_preview = true;
 168         }
 169         try{
 170                 hp = args.getS32("hp");
 171         }catch(SettingNotFoundException &e){
 172                 hp = 20;
 173         }
 174
 175         inventory.deSerialize(is, m_gamedef);
 176 }
 177
 178 /*
 179         ServerRemotePlayer
 180 */
 181
 182 ServerRemotePlayer::ServerRemotePlayer(ServerEnvironment *env):
 183         Player(env->getGameDef()),
 184         ServerActiveObject(env, v3f(0,0,0)),
 185         m_last_good_position(0,0,0),
 186         m_last_good_position_age(0),
 187         m_additional_items()
 188 {
 189 }
 190 ServerRemotePlayer::ServerRemotePlayer(ServerEnvironment *env, v3f pos_, u16 peer_id_,
 191                 const char *name_):
 192         Player(env->getGameDef()),
 193         ServerActiveObject(env, pos_)
 194 {
 195         setPosition(pos_);
 196         peer_id = peer_id_;
 197         updateName(name_);
 198 }
 199 ServerRemotePlayer::~ServerRemotePlayer()
 200 {
 201         clearAddToInventoryLater();
 202 }
 203
 204 /* ServerActiveObject interface */
 205
 206 InventoryItem* ServerRemotePlayer::getWieldedItem()
 207 {
 208         InventoryList *list = inventory.getList("main");
 209         if (list)
 210                 return list->getItem(m_selected_item);
 211         return NULL;
 212 }
 213 void ServerRemotePlayer::damageWieldedItem(u16 amount)
 214 {
 215         infostream<<"Damaging "<<getName()<<"'s wielded item for amount="
 216                         <<amount<<std::endl;
 217         InventoryList *list = inventory.getList("main");
 218         if(!list)
 219                 return;
 220         InventoryItem *item = list->getItem(m_selected_item);
 221         if(item && (std::string)item->getName() == "ToolItem"){
 222                 ToolItem *titem = (ToolItem*)item;
 223                 bool weared_out = titem->addWear(amount);
 224                 if(weared_out)
 225                         list->deleteItem(m_selected_item);
 226         }
 227 }
 228 bool ServerRemotePlayer::addToInventory(InventoryItem *item)
 229 {
 230         infostream<<"Adding "<<item->getName()<<" into "<<getName()
 231                         <<"'s inventory"<<std::endl;
 232
 233         InventoryList *ilist = inventory.getList("main");
 234         if(ilist == NULL)
 235                 return false;
 236
 237         // In creative mode, just delete the item
 238         if(g_settings->getBool("creative_mode")){
 239                 return false;
 240         }
 241
 242         // Skip if inventory has no free space
 243         if(ilist->roomForItem(item) == false)
 244         {
 245                 infostream<<"Player inventory has no free space"<<std::endl;
 246                 return false;
 247         }
 248
 249         // Add to inventory
 250         InventoryItem *leftover = ilist->addItem(item);
 251         assert(!leftover);
 252
 253         return true;
 254 }
 255 void ServerRemotePlayer::addToInventoryLater(InventoryItem *item)
 256 {
 257         infostream<<"Adding (later) "<<item->getName()<<" into "<<getName()
 258                         <<"'s inventory"<<std::endl;
 259         m_additional_items.push_back(item);
 260 }
 261 void ServerRemotePlayer::clearAddToInventoryLater()
 262 {
 263         for (std::vector<InventoryItem*>::iterator
 264                         i = m_additional_items.begin();
 265                         i != m_additional_items.end(); i++)
 266         {
 267                 delete *i;
 268         }
 269         m_additional_items.clear();
 270 }
 271 void ServerRemotePlayer::completeAddToInventoryLater(u16 preferred_index)
 272 {
 273         InventoryList *ilist = inventory.getList("main");
 274         if(ilist == NULL)
 275         {
 276                 clearAddToInventoryLater();
 277                 return;
 278         }
 279
 280         // In creative mode, just delete the items
 281         if(g_settings->getBool("creative_mode"))
 282         {
 283                 clearAddToInventoryLater();
 284                 return;
 285         }
 286
 287         for (std::vector<InventoryItem*>::iterator
 288                         i = m_additional_items.begin();
 289                         i != m_additional_items.end(); i++)
 290         {
 291                 InventoryItem *item = *i;
 292                 InventoryItem *leftover = item;
 293                 leftover = ilist->addItem(preferred_index, leftover);
 294                 leftover = ilist->addItem(leftover);
 295                 delete leftover;
 296         }
 297         m_additional_items.clear();
 298 }
 299 void ServerRemotePlayer::setHP(s16 hp_)
 300 {
 301         hp = hp_;
 302
 303         // FIXME: don't hardcode maximum HP, make configurable per object
 304         if(hp < 0)
 305                 hp = 0;
 306         else if(hp > 20)
 307                 hp = 20;
 308 }
 309 s16 ServerRemotePlayer::getHP()
 310 {
 311         return hp;
 312 }
 313
 314 /*
 315         RemotePlayer
 316 */
 317
 318 #ifndef SERVER
 319
 320 RemotePlayer::RemotePlayer(
 321                 IGameDef *gamedef,
 322                 scene::ISceneNode* parent,
 323                 IrrlichtDevice *device,
 324                 s32 id):
 325         Player(gamedef),
 326         scene::ISceneNode(parent, (device==NULL)?NULL:device->getSceneManager(), id),
 327         m_text(NULL)
 328 {
 329         m_box = core::aabbox3d<f32>(-BS/2,0,-BS/2,BS/2,BS*2,BS/2);
 330
 331         if(parent != NULL && device != NULL)
 332         {
 333                 // ISceneNode stores a member called SceneManager
 334                 scene::ISceneManager* mgr = SceneManager;
 335                 video::IVideoDriver* driver = mgr->getVideoDriver();
 336                 gui::IGUIEnvironment* gui = device->getGUIEnvironment();
 337
 338                 // Add a text node for showing the name
 339                 wchar_t wname[1] = {0};
 340                 m_text = mgr->addTextSceneNode(gui->getBuiltInFont(),
 341                                 wname, video::SColor(255,255,255,255), this);
 342                 m_text->setPosition(v3f(0, (f32)BS*2.1, 0));
 343
 344                 // Attach a simple mesh to the player for showing an image
 345                 scene::SMesh *mesh = new scene::SMesh();
 346                 { // Front
 347                 scene::IMeshBuffer *buf = new scene::SMeshBuffer();
 348                 video::SColor c(255,255,255,255);
 349                 video::S3DVertex vertices[4] =
 350                 {
 351                         video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
 352                         video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
 353                         video::S3DVertex(BS/2,BS*2,0, 0,0,0, c, 1,0),
 354                         video::S3DVertex(-BS/2,BS*2,0, 0,0,0, c, 0,0),
 355                 };
 356                 u16 indices[] = {0,1,2,2,3,0};
 357                 buf->append(vertices, 4, indices, 6);
 358                 // Set material
 359                 buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
 360                 //buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
 361                 buf->getMaterial().setTexture(0, driver->getTexture(getTexturePath("player.png").c_str()));
 362                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
 363                 buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
 364                 //buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 365                 buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 366                 // Add to mesh
 367                 mesh->addMeshBuffer(buf);
 368                 buf->drop();
 369                 }
 370                 { // Back
 371                 scene::IMeshBuffer *buf = new scene::SMeshBuffer();
 372                 video::SColor c(255,255,255,255);
 373                 video::S3DVertex vertices[4] =
 374                 {
 375                         video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
 376                         video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
 377                         video::S3DVertex(-BS/2,BS*2,0, 0,0,0, c, 0,0),
 378                         video::S3DVertex(BS/2,BS*2,0, 0,0,0, c, 1,0),
 379                 };
 380                 u16 indices[] = {0,1,2,2,3,0};
 381                 buf->append(vertices, 4, indices, 6);
 382                 // Set material
 383                 buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
 384                 //buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
 385                 buf->getMaterial().setTexture(0, driver->getTexture(getTexturePath("player_back.png").c_str()));
 386                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
 387                 buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
 388                 buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 389                 // Add to mesh
 390                 mesh->addMeshBuffer(buf);
 391                 buf->drop();
 392                 }
 393                 m_node = mgr->addMeshSceneNode(mesh, this);
 394                 mesh->drop();
 395                 m_node->setPosition(v3f(0,0,0));
 396         }
 397 }
 398
 399 RemotePlayer::~RemotePlayer()
 400 {
 401         if(SceneManager != NULL)
 402                 ISceneNode::remove();
 403 }
 404
 405 void RemotePlayer::updateName(const char *name)
 406 {
 407         Player::updateName(name);
 408         if(m_text != NULL)
 409         {
 410                 wchar_t wname[PLAYERNAME_SIZE];
 411                 mbstowcs(wname, m_name, strlen(m_name)+1);
 412                 m_text->setText(wname);
 413         }
 414 }
 415
 416 void RemotePlayer::move(f32 dtime, Map &map, f32 pos_max_d)
 417 {
 418         m_pos_animation_time_counter += dtime;
 419         m_pos_animation_counter += dtime;
 420         v3f movevector = m_position - m_oldpos;
 421         f32 moveratio;
 422         if(m_pos_animation_time < 0.001)
 423                 moveratio = 1.0;
 424         else
 425                 moveratio = m_pos_animation_counter / m_pos_animation_time;
 426         if(moveratio > 1.5)
 427                 moveratio = 1.5;
 428         m_showpos = m_oldpos + movevector * moveratio;
 429
 430         ISceneNode::setPosition(m_showpos);
 431 }
 432
 433 #endif
 434
 435 #ifndef SERVER
 436 /*
 437         LocalPlayer
 438 */
 439
 440 LocalPlayer::LocalPlayer(IGameDef *gamedef):
 441         Player(gamedef),
 442         m_sneak_node(32767,32767,32767),
 443         m_sneak_node_exists(false)
 444 {
 445         // Initialize hp to 0, so that no hearts will be shown if server
 446         // doesn't support health points
 447         hp = 0;
 448 }
 449
 450 LocalPlayer::~LocalPlayer()
 451 {
 452 }
 453
 454 void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d,
 455                 core::list<CollisionInfo> *collision_info)
 456 {
 457         INodeDefManager *nodemgr = m_gamedef->ndef();
 458
 459         v3f position = getPosition();
 460         v3f oldpos = position;
 461         v3s16 oldpos_i = floatToInt(oldpos, BS);
 462
 463         v3f old_speed = m_speed;
 464
 465         /*std::cout<<"oldpos_i=("<<oldpos_i.X<<","<<oldpos_i.Y<<","
 466                         <<oldpos_i.Z<<")"<<std::endl;*/
 467
 468         /*
 469                 Calculate new position
 470         */
 471         position += m_speed * dtime;
 472
 473         // Skip collision detection if a special movement mode is used
 474         bool free_move = g_settings->getBool("free_move");
 475         if(free_move)
 476         {
 477                 setPosition(position);
 478                 return;
 479         }
 480
 481         /*
 482                 Collision detection
 483         */
 484
 485         // Player position in nodes
 486         v3s16 pos_i = floatToInt(position, BS);
 487
 488         /*
 489                 Check if player is in water (the oscillating value)
 490         */
 491         try{
 492                 // If in water, the threshold of coming out is at higher y
 493                 if(in_water)
 494                 {
 495                         v3s16 pp = floatToInt(position + v3f(0,BS*0.1,0), BS);
 496                         in_water = nodemgr->get(map.getNode(pp).getContent()).isLiquid();
 497                 }
 498                 // If not in water, the threshold of going in is at lower y
 499                 else
 500                 {
 501                         v3s16 pp = floatToInt(position + v3f(0,BS*0.5,0), BS);
 502                         in_water = nodemgr->get(map.getNode(pp).getContent()).isLiquid();
 503                 }
 504         }
 505         catch(InvalidPositionException &e)
 506         {
 507                 in_water = false;
 508         }
 509
 510         /*
 511                 Check if player is in water (the stable value)
 512         */
 513         try{
 514                 v3s16 pp = floatToInt(position + v3f(0,0,0), BS);
 515                 in_water_stable = nodemgr->get(map.getNode(pp).getContent()).isLiquid();
 516         }
 517         catch(InvalidPositionException &e)
 518         {
 519                 in_water_stable = false;
 520         }
 521
 522         /*
 523                 Check if player is climbing
 524         */
 525
 526         try {
 527                 v3s16 pp = floatToInt(position + v3f(0,0.5*BS,0), BS);
 528                 v3s16 pp2 = floatToInt(position + v3f(0,-0.2*BS,0), BS);
 529                 is_climbing = ((nodemgr->get(map.getNode(pp).getContent()).climbable ||
 530                 nodemgr->get(map.getNode(pp2).getContent()).climbable) && !free_move);
 531         }
 532         catch(InvalidPositionException &e)
 533         {
 534                 is_climbing = false;
 535         }
 536
 537         /*
 538                 Collision uncertainty radius
 539                 Make it a bit larger than the maximum distance of movement
 540         */
 541         //f32 d = pos_max_d * 1.1;
 542         // A fairly large value in here makes moving smoother
 543         f32 d = 0.15*BS;
 544
 545         // This should always apply, otherwise there are glitches
 546         assert(d > pos_max_d);
 547
 548         float player_radius = BS*0.35;
 549         float player_height = BS*1.7;
 550
 551         // Maximum distance over border for sneaking
 552         f32 sneak_max = BS*0.4;
 553
 554         /*
 555                 If sneaking, player has larger collision radius to keep from
 556                 falling
 557         */
 558         /*if(control.sneak)
 559                 player_radius = sneak_max + d*1.1;*/
 560
 561         /*
 562                 If sneaking, keep in range from the last walked node and don't
 563                 fall off from it
 564         */
 565         if(control.sneak && m_sneak_node_exists)
 566         {
 567                 f32 maxd = 0.5*BS + sneak_max;
 568                 v3f lwn_f = intToFloat(m_sneak_node, BS);
 569                 position.X = rangelim(position.X, lwn_f.X-maxd, lwn_f.X+maxd);
 570                 position.Z = rangelim(position.Z, lwn_f.Z-maxd, lwn_f.Z+maxd);
 571
 572                 f32 min_y = lwn_f.Y + 0.5*BS;
 573                 if(position.Y < min_y)
 574                 {
 575                         position.Y = min_y;
 576
 577                         //v3f old_speed = m_speed;
 578
 579                         if(m_speed.Y < 0)
 580                                 m_speed.Y = 0;
 581
 582                         /*if(collision_info)
 583                         {
 584                                 // Report fall collision
 585                                 if(old_speed.Y < m_speed.Y - 0.1)
 586                                 {
 587                                         CollisionInfo info;
 588                                         info.t = COLLISION_FALL;
 589                                         info.speed = m_speed.Y - old_speed.Y;
 590                                         collision_info->push_back(info);
 591                                 }
 592                         }*/
 593                 }
 594         }
 595
 596         /*
 597                 Calculate player collision box (new and old)
 598         */
 599         core::aabbox3d<f32> playerbox(
 600                 position.X - player_radius,
 601                 position.Y - 0.0,
 602                 position.Z - player_radius,
 603                 position.X + player_radius,
 604                 position.Y + player_height,
 605                 position.Z + player_radius
 606         );
 607         core::aabbox3d<f32> playerbox_old(
 608                 oldpos.X - player_radius,
 609                 oldpos.Y - 0.0,
 610                 oldpos.Z - player_radius,
 611                 oldpos.X + player_radius,
 612                 oldpos.Y + player_height,
 613                 oldpos.Z + player_radius
 614         );
 615
 616         /*
 617                 If the player's feet touch the topside of any node, this is
 618                 set to true.
 619
 620                 Player is allowed to jump when this is true.
 621         */
 622         touching_ground = false;
 623
 624         /*std::cout<<"Checking collisions for ("
 625                         <<oldpos_i.X<<","<<oldpos_i.Y<<","<<oldpos_i.Z
 626                         <<") -> ("
 627                         <<pos_i.X<<","<<pos_i.Y<<","<<pos_i.Z
 628                         <<"):"<<std::endl;*/
 629
 630         bool standing_on_unloaded = false;
 631
 632         /*
 633                 Go through every node around the player
 634         */
 635         for(s16 y = oldpos_i.Y - 1; y <= oldpos_i.Y + 2; y++)
 636         for(s16 z = oldpos_i.Z - 1; z <= oldpos_i.Z + 1; z++)
 637         for(s16 x = oldpos_i.X - 1; x <= oldpos_i.X + 1; x++)
 638         {
 639                 bool is_unloaded = false;
 640                 try{
 641                         // Player collides into walkable nodes
 642                         if(nodemgr->get(map.getNode(v3s16(x,y,z))).walkable == false)
 643                                 continue;
 644                 }
 645                 catch(InvalidPositionException &e)
 646                 {
 647                         is_unloaded = true;
 648                         // Doing nothing here will block the player from
 649                         // walking over map borders
 650                 }
 651
 652                 core::aabbox3d<f32> nodebox = getNodeBox(v3s16(x,y,z), BS);
 653
 654                 /*
 655                         See if the player is touching ground.
 656
 657                         Player touches ground if player's minimum Y is near node's
 658                         maximum Y and player's X-Z-area overlaps with the node's
 659                         X-Z-area.
 660
 661                         Use 0.15*BS so that it is easier to get on a node.
 662                 */
 663                 if(
 664                                 //fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < d
 665                                 fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < 0.15*BS
 666                                 && nodebox.MaxEdge.X-d > playerbox.MinEdge.X
 667                                 && nodebox.MinEdge.X+d < playerbox.MaxEdge.X
 668                                 && nodebox.MaxEdge.Z-d > playerbox.MinEdge.Z
 669                                 && nodebox.MinEdge.Z+d < playerbox.MaxEdge.Z
 670                 ){
 671                         touching_ground = true;
 672                         if(is_unloaded)
 673                                 standing_on_unloaded = true;
 674                 }
 675
 676                 // If player doesn't intersect with node, ignore node.
 677                 if(playerbox.intersectsWithBox(nodebox) == false)
 678                         continue;
 679
 680                 /*
 681                         Go through every axis
 682                 */
 683                 v3f dirs[3] = {
 684                         v3f(0,0,1), // back-front
 685                         v3f(0,1,0), // top-bottom
 686                         v3f(1,0,0), // right-left
 687                 };
 688                 for(u16 i=0; i<3; i++)
 689                 {
 690                         /*
 691                                 Calculate values along the axis
 692                         */
 693                         f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[i]);
 694                         f32 nodemin = nodebox.MinEdge.dotProduct(dirs[i]);
 695                         f32 playermax = playerbox.MaxEdge.dotProduct(dirs[i]);
 696                         f32 playermin = playerbox.MinEdge.dotProduct(dirs[i]);
 697                         f32 playermax_old = playerbox_old.MaxEdge.dotProduct(dirs[i]);
 698                         f32 playermin_old = playerbox_old.MinEdge.dotProduct(dirs[i]);
 699
 700                         /*
 701                                 Check collision for the axis.
 702                                 Collision happens when player is going through a surface.
 703                         */
 704                         /*f32 neg_d = d;
 705                         f32 pos_d = d;
 706                         // Make it easier to get on top of a node
 707                         if(i == 1)
 708                                 neg_d = 0.15*BS;
 709                         bool negative_axis_collides =
 710                                 (nodemax > playermin && nodemax <= playermin_old + neg_d
 711                                         && m_speed.dotProduct(dirs[i]) < 0);
 712                         bool positive_axis_collides =
 713                                 (nodemin < playermax && nodemin >= playermax_old - pos_d
 714                                         && m_speed.dotProduct(dirs[i]) > 0);*/
 715                         bool negative_axis_collides =
 716                                 (nodemax > playermin && nodemax <= playermin_old + d
 717                                         && m_speed.dotProduct(dirs[i]) < 0);
 718                         bool positive_axis_collides =
 719                                 (nodemin < playermax && nodemin >= playermax_old - d
 720                                         && m_speed.dotProduct(dirs[i]) > 0);
 721                         bool main_axis_collides =
 722                                         negative_axis_collides || positive_axis_collides;
 723
 724                         /*
 725                                 Check overlap of player and node in other axes
 726                         */
 727                         bool other_axes_overlap = true;
 728                         for(u16 j=0; j<3; j++)
 729                         {
 730                                 if(j == i)
 731                                         continue;
 732                                 f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[j]);
 733                                 f32 nodemin = nodebox.MinEdge.dotProduct(dirs[j]);
 734                                 f32 playermax = playerbox.MaxEdge.dotProduct(dirs[j]);
 735                                 f32 playermin = playerbox.MinEdge.dotProduct(dirs[j]);
 736                                 if(!(nodemax - d > playermin && nodemin + d < playermax))
 737                                 {
 738                                         other_axes_overlap = false;
 739                                         break;
 740                                 }
 741                         }
 742
 743                         /*
 744                                 If this is a collision, revert the position in the main
 745                                 direction.
 746                         */
 747                         if(other_axes_overlap && main_axis_collides)
 748                         {
 749                                 //v3f old_speed = m_speed;
 750
 751                                 m_speed -= m_speed.dotProduct(dirs[i]) * dirs[i];
 752                                 position -= position.dotProduct(dirs[i]) * dirs[i];
 753                                 position += oldpos.dotProduct(dirs[i]) * dirs[i];
 754
 755                                 /*if(collision_info)
 756                                 {
 757                                         // Report fall collision
 758                                         if(old_speed.Y < m_speed.Y - 0.1)
 759                                         {
 760                                                 CollisionInfo info;
 761                                                 info.t = COLLISION_FALL;
 762                                                 info.speed = m_speed.Y - old_speed.Y;
 763                                                 collision_info->push_back(info);
 764                                         }
 765                                 }*/
 766                         }
 767
 768                 }
 769         } // xyz
 770
 771         /*
 772                 Check the nodes under the player to see from which node the
 773                 player is sneaking from, if any.
 774         */
 775         {
 776                 v3s16 pos_i_bottom = floatToInt(position - v3f(0,BS/2,0), BS);
 777                 v2f player_p2df(position.X, position.Z);
 778                 f32 min_distance_f = 100000.0*BS;
 779                 // If already seeking from some node, compare to it.
 780                 /*if(m_sneak_node_exists)
 781                 {
 782                         v3f sneaknode_pf = intToFloat(m_sneak_node, BS);
 783                         v2f sneaknode_p2df(sneaknode_pf.X, sneaknode_pf.Z);
 784                         f32 d_horiz_f = player_p2df.getDistanceFrom(sneaknode_p2df);
 785                         f32 d_vert_f = fabs(sneaknode_pf.Y + BS*0.5 - position.Y);
 786                         // Ignore if player is not on the same level (likely dropped)
 787                         if(d_vert_f < 0.15*BS)
 788                                 min_distance_f = d_horiz_f;
 789                 }*/
 790                 v3s16 new_sneak_node = m_sneak_node;
 791                 for(s16 x=-1; x<=1; x++)
 792                 for(s16 z=-1; z<=1; z++)
 793                 {
 794                         v3s16 p = pos_i_bottom + v3s16(x,0,z);
 795                         v3f pf = intToFloat(p, BS);
 796                         v2f node_p2df(pf.X, pf.Z);
 797                         f32 distance_f = player_p2df.getDistanceFrom(node_p2df);
 798                         f32 max_axis_distance_f = MYMAX(
 799                                         fabs(player_p2df.X-node_p2df.X),
 800                                         fabs(player_p2df.Y-node_p2df.Y));
 801
 802                         if(distance_f > min_distance_f ||
 803                                         max_axis_distance_f > 0.5*BS + sneak_max + 0.1*BS)
 804                                 continue;
 805
 806                         try{
 807                                 // The node to be sneaked on has to be walkable
 808                                 if(nodemgr->get(map.getNode(p)).walkable == false)
 809                                         continue;
 810                                 // And the node above it has to be nonwalkable
 811                                 if(nodemgr->get(map.getNode(p+v3s16(0,1,0))).walkable == true)
 812                                         continue;
 813                         }
 814                         catch(InvalidPositionException &e)
 815                         {
 816                                 continue;
 817                         }
 818
 819                         min_distance_f = distance_f;
 820                         new_sneak_node = p;
 821                 }
 822
 823                 bool sneak_node_found = (min_distance_f < 100000.0*BS*0.9);
 824
 825                 if(control.sneak && m_sneak_node_exists)
 826                 {
 827                         if(sneak_node_found)
 828                                 m_sneak_node = new_sneak_node;
 829                 }
 830                 else
 831                 {
 832                         m_sneak_node = new_sneak_node;
 833                         m_sneak_node_exists = sneak_node_found;
 834                 }
 835
 836                 /*
 837                         If sneaking, the player's collision box can be in air, so
 838                         this has to be set explicitly
 839                 */
 840                 if(sneak_node_found && control.sneak)
 841                         touching_ground = true;
 842         }
 843
 844         /*
 845                 Set new position
 846         */
 847         setPosition(position);
 848
 849         /*
 850                 Report collisions
 851         */
 852         if(collision_info)
 853         {
 854                 // Report fall collision
 855                 if(old_speed.Y < m_speed.Y - 0.1 && !standing_on_unloaded)
 856                 {
 857                         CollisionInfo info;
 858                         info.t = COLLISION_FALL;
 859                         info.speed = m_speed.Y - old_speed.Y;
 860                         collision_info->push_back(info);
 861                 }
 862         }
 863 }
 864
 865 void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d)
 866 {
 867         move(dtime, map, pos_max_d, NULL);
 868 }
 869
 870 void LocalPlayer::applyControl(float dtime)
 871 {
 872         // Clear stuff
 873         swimming_up = false;
 874
 875         // Random constants
 876         f32 walk_acceleration = 4.0 * BS;
 877         f32 walkspeed_max = 4.0 * BS;
 878
 879         setPitch(control.pitch);
 880         setYaw(control.yaw);
 881
 882         v3f move_direction = v3f(0,0,1);
 883         move_direction.rotateXZBy(getYaw());
 884
 885         v3f speed = v3f(0,0,0);
 886
 887         bool free_move = g_settings->getBool("free_move");
 888         bool fast_move = g_settings->getBool("fast_move");
 889         bool continuous_forward = g_settings->getBool("continuous_forward");
 890
 891         if(free_move || is_climbing)
 892         {
 893                 v3f speed = getSpeed();
 894                 speed.Y = 0;
 895                 setSpeed(speed);
 896         }
 897
 898         // Whether superspeed mode is used or not
 899         bool superspeed = false;
 900
 901         // If free movement and fast movement, always move fast
 902         if(free_move && fast_move)
 903                 superspeed = true;
 904
 905         // Auxiliary button 1 (E)
 906         if(control.aux1)
 907         {
 908                 if(free_move)
 909                 {
 910                         // In free movement mode, aux1 descends
 911                         v3f speed = getSpeed();
 912                         if(fast_move)
 913                                 speed.Y = -20*BS;
 914                         else
 915                                 speed.Y = -walkspeed_max;
 916                         setSpeed(speed);
 917                 }
 918                 else if(is_climbing)
 919                 {
 920                         v3f speed = getSpeed();
 921                         speed.Y = -3*BS;
 922                         setSpeed(speed);
 923                 }
 924                 else
 925                 {
 926                         // If not free movement but fast is allowed, aux1 is
 927                         // "Turbo button"
 928                         if(fast_move)
 929                                 superspeed = true;
 930                 }
 931         }
 932
 933         if(continuous_forward)
 934                 speed += move_direction;
 935
 936         if(control.up)
 937         {
 938                 if(continuous_forward)
 939                         superspeed = true;
 940                 else
 941                         speed += move_direction;
 942         }
 943         if(control.down)
 944         {
 945                 speed -= move_direction;
 946         }
 947         if(control.left)
 948         {
 949                 speed += move_direction.crossProduct(v3f(0,1,0));
 950         }
 951         if(control.right)
 952         {
 953                 speed += move_direction.crossProduct(v3f(0,-1,0));
 954         }
 955         if(control.jump)
 956         {
 957                 if(free_move)
 958                 {
 959                         v3f speed = getSpeed();
 960                         if(fast_move)
 961                                 speed.Y = 20*BS;
 962                         else
 963                                 speed.Y = walkspeed_max;
 964                         setSpeed(speed);
 965                 }
 966                 else if(touching_ground)
 967                 {
 968                         v3f speed = getSpeed();
 969                         /*
 970                                 NOTE: The d value in move() affects jump height by
 971                                 raising the height at which the jump speed is kept
 972                                 at its starting value
 973                         */
 974                         speed.Y = 6.5*BS;
 975                         setSpeed(speed);
 976                 }
 977                 // Use the oscillating value for getting out of water
 978                 // (so that the player doesn't fly on the surface)
 979                 else if(in_water)
 980                 {
 981                         v3f speed = getSpeed();
 982                         speed.Y = 1.5*BS;
 983                         setSpeed(speed);
 984                         swimming_up = true;
 985                 }
 986                 else if(is_climbing)
 987                 {
 988                         v3f speed = getSpeed();
 989                         speed.Y = 3*BS;
 990                         setSpeed(speed);
 991                 }
 992         }
 993
 994         // The speed of the player (Y is ignored)
 995         if(superspeed)
 996                 speed = speed.normalize() * walkspeed_max * 5.0;
 997         else if(control.sneak)
 998                 speed = speed.normalize() * walkspeed_max / 3.0;
 999         else
1000                 speed = speed.normalize() * walkspeed_max;
1001
1002         f32 inc = walk_acceleration * BS * dtime;
1003
1004         // Faster acceleration if fast and free movement
1005         if(free_move && fast_move)
1006                 inc = walk_acceleration * BS * dtime * 10;
1007
1008         // Accelerate to target speed with maximum increment
1009         accelerate(speed, inc);
1010 }
1011 #endif
1012