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 #include "content_sao.h"
  34 #include "tooldef.h"
  35 #include "materials.h"
  36
  37 Player::Player(IGameDef *gamedef):
  38         touching_ground(false),
  39         in_water(false),
  40         in_water_stable(false),
  41         is_climbing(false),
  42         swimming_up(false),
  43         inventory_backup(NULL),
  44         craftresult_is_preview(true),
  45         hp(20),
  46         peer_id(PEER_ID_INEXISTENT),
  47 // protected
  48         m_gamedef(gamedef),
  49         m_selected_item(0),
  50         m_pitch(0),
  51         m_yaw(0),
  52         m_speed(0,0,0),
  53         m_position(0,0,0)
  54 {
  55         updateName("<not set>");
  56         resetInventory();
  57 }
  58
  59 Player::~Player()
  60 {
  61         delete inventory_backup;
  62 }
  63
  64 void Player::wieldItem(u16 item)
  65 {
  66         m_selected_item = item;
  67 }
  68
  69 void Player::resetInventory()
  70 {
  71         inventory.clear();
  72         inventory.addList("main", PLAYER_INVENTORY_SIZE);
  73         inventory.addList("craft", 9);
  74         inventory.addList("craftresult", 1);
  75 }
  76
  77 // Y direction is ignored
  78 void Player::accelerate(v3f target_speed, f32 max_increase)
  79 {
  80         v3f d_wanted = target_speed - m_speed;
  81         d_wanted.Y = 0;
  82         f32 dl_wanted = d_wanted.getLength();
  83         f32 dl = dl_wanted;
  84         if(dl > max_increase)
  85                 dl = max_increase;
  86
  87         v3f d = d_wanted.normalize() * dl;
  88
  89         m_speed.X += d.X;
  90         m_speed.Z += d.Z;
  91         //m_speed += d;
  92
  93 #if 0 // old code
  94         if(m_speed.X < target_speed.X - max_increase)
  95                 m_speed.X += max_increase;
  96         else if(m_speed.X > target_speed.X + max_increase)
  97                 m_speed.X -= max_increase;
  98         else if(m_speed.X < target_speed.X)
  99                 m_speed.X = target_speed.X;
 100         else if(m_speed.X > target_speed.X)
 101                 m_speed.X = target_speed.X;
 102
 103         if(m_speed.Z < target_speed.Z - max_increase)
 104                 m_speed.Z += max_increase;
 105         else if(m_speed.Z > target_speed.Z + max_increase)
 106                 m_speed.Z -= max_increase;
 107         else if(m_speed.Z < target_speed.Z)
 108                 m_speed.Z = target_speed.Z;
 109         else if(m_speed.Z > target_speed.Z)
 110                 m_speed.Z = target_speed.Z;
 111 #endif
 112 }
 113
 114 v3s16 Player::getLightPosition() const
 115 {
 116         return floatToInt(m_position + v3f(0,BS+BS/2,0), BS);
 117 }
 118
 119 void Player::serialize(std::ostream &os)
 120 {
 121         // Utilize a Settings object for storing values
 122         Settings args;
 123         args.setS32("version", 1);
 124         args.set("name", m_name);
 125         //args.set("password", m_password);
 126         args.setFloat("pitch", m_pitch);
 127         args.setFloat("yaw", m_yaw);
 128         args.setV3F("position", m_position);
 129         args.setBool("craftresult_is_preview", craftresult_is_preview);
 130         args.setS32("hp", hp);
 131
 132         args.writeLines(os);
 133
 134         os<<"PlayerArgsEnd\n";
 135
 136         // If actual inventory is backed up due to creative mode, save it
 137         // instead of the dummy creative mode inventory
 138         if(inventory_backup)
 139                 inventory_backup->serialize(os);
 140         else
 141                 inventory.serialize(os);
 142 }
 143
 144 void Player::deSerialize(std::istream &is)
 145 {
 146         Settings args;
 147
 148         for(;;)
 149         {
 150                 if(is.eof())
 151                         throw SerializationError
 152                                         ("Player::deSerialize(): PlayerArgsEnd not found");
 153                 std::string line;
 154                 std::getline(is, line);
 155                 std::string trimmedline = trim(line);
 156                 if(trimmedline == "PlayerArgsEnd")
 157                         break;
 158                 args.parseConfigLine(line);
 159         }
 160
 161         //args.getS32("version"); // Version field value not used
 162         std::string name = args.get("name");
 163         updateName(name.c_str());
 164         setPitch(args.getFloat("pitch"));
 165         setYaw(args.getFloat("yaw"));
 166         setPosition(args.getV3F("position"));
 167         try{
 168                 craftresult_is_preview = args.getBool("craftresult_is_preview");
 169         }catch(SettingNotFoundException &e){
 170                 craftresult_is_preview = true;
 171         }
 172         try{
 173                 hp = args.getS32("hp");
 174         }catch(SettingNotFoundException &e){
 175                 hp = 20;
 176         }
 177
 178         inventory.deSerialize(is, m_gamedef);
 179 }
 180
 181 /*
 182         ServerRemotePlayer
 183 */
 184
 185 ServerRemotePlayer::ServerRemotePlayer(ServerEnvironment *env):
 186         Player(env->getGameDef()),
 187         ServerActiveObject(env, v3f(0,0,0)),
 188         m_last_good_position(0,0,0),
 189         m_last_good_position_age(0),
 190         m_additional_items(),
 191         m_inventory_not_sent(false),
 192         m_hp_not_sent(false),
 193         m_respawn_active(false),
 194         m_is_in_environment(false),
 195         m_position_not_sent(false)
 196 {
 197 }
 198 ServerRemotePlayer::ServerRemotePlayer(ServerEnvironment *env, v3f pos_, u16 peer_id_,
 199                 const char *name_):
 200         Player(env->getGameDef()),
 201         ServerActiveObject(env, pos_),
 202         m_inventory_not_sent(false),
 203         m_hp_not_sent(false),
 204         m_is_in_environment(false),
 205         m_position_not_sent(false)
 206 {
 207         setPosition(pos_);
 208         peer_id = peer_id_;
 209         updateName(name_);
 210 }
 211 ServerRemotePlayer::~ServerRemotePlayer()
 212 {
 213         clearAddToInventoryLater();
 214 }
 215
 216 void ServerRemotePlayer::setPosition(const v3f &position)
 217 {
 218         Player::setPosition(position);
 219         ServerActiveObject::setBasePosition(position);
 220         m_position_not_sent = true;
 221 }
 222
 223 InventoryItem* ServerRemotePlayer::getWieldedItem()
 224 {
 225         InventoryList *list = inventory.getList("main");
 226         if (list)
 227                 return list->getItem(m_selected_item);
 228         return NULL;
 229 }
 230
 231 /* ServerActiveObject interface */
 232
 233 void ServerRemotePlayer::addedToEnvironment()
 234 {
 235         assert(!m_is_in_environment);
 236         m_is_in_environment = true;
 237 }
 238
 239 void ServerRemotePlayer::removingFromEnvironment()
 240 {
 241         assert(m_is_in_environment);
 242         m_is_in_environment = false;
 243 }
 244
 245 bool ServerRemotePlayer::unlimitedTransferDistance() const
 246 {
 247         return true;
 248 }
 249
 250 void ServerRemotePlayer::step(float dtime, bool send_recommended)
 251 {
 252         if(send_recommended == false)
 253                 return;
 254
 255         if(m_position_not_sent)
 256         {
 257                 m_position_not_sent = false;
 258
 259                 std::ostringstream os(std::ios::binary);
 260                 // command (0 = update position)
 261                 writeU8(os, 0);
 262                 // pos
 263                 writeV3F1000(os, getPosition());
 264                 // yaw
 265                 writeF1000(os, getYaw());
 266                 // create message and add to list
 267                 ActiveObjectMessage aom(getId(), false, os.str());
 268                 m_messages_out.push_back(aom);
 269         }
 270 }
 271
 272 std::string ServerRemotePlayer::getClientInitializationData()
 273 {
 274         std::ostringstream os(std::ios::binary);
 275         // version
 276         writeU8(os, 0);
 277         // name
 278         os<<serializeString(getName());
 279         // pos
 280         writeV3F1000(os, getPosition());
 281         // yaw
 282         writeF1000(os, getYaw());
 283         return os.str();
 284 }
 285
 286 std::string ServerRemotePlayer::getStaticData()
 287 {
 288         assert(0);
 289         return "";
 290 }
 291
 292 void ServerRemotePlayer::punch(ServerActiveObject *puncher,
 293                 float time_from_last_punch)
 294 {
 295         if(!puncher)
 296                 return;
 297
 298         // "Material" properties of a player
 299         MaterialProperties mp;
 300         mp.diggability = DIGGABLE_NORMAL;
 301         mp.crackiness = -1.0;
 302         mp.cuttability = 1.0;
 303
 304         ToolDiggingProperties tp;
 305         puncher->getWieldDiggingProperties(&tp);
 306
 307         HittingProperties hitprop = getHittingProperties(&mp, &tp,
 308                         time_from_last_punch);
 309
 310         infostream<<"1. getHP()="<<getHP()<<std::endl;
 311         setHP(getHP() - hitprop.hp);
 312         infostream<<"2. getHP()="<<getHP()<<std::endl;
 313         puncher->damageWieldedItem(hitprop.wear);
 314 }
 315
 316 void ServerRemotePlayer::rightClick(ServerActiveObject *clicker)
 317 {
 318 }
 319
 320 void ServerRemotePlayer::setPos(v3f pos)
 321 {
 322         setPosition(pos);
 323         // Movement caused by this command is always valid
 324         m_last_good_position = pos;
 325         m_last_good_position_age = 0;
 326 }
 327 void ServerRemotePlayer::moveTo(v3f pos, bool continuous)
 328 {
 329         setPosition(pos);
 330         // Movement caused by this command is always valid
 331         m_last_good_position = pos;
 332         m_last_good_position_age = 0;
 333 }
 334
 335 void ServerRemotePlayer::getWieldDiggingProperties(ToolDiggingProperties *dst)
 336 {
 337         IGameDef *gamedef = m_env->getGameDef();
 338         IToolDefManager *tdef = gamedef->tdef();
 339
 340         InventoryItem *item = getWieldedItem();
 341         if(item == NULL || std::string(item->getName()) != "ToolItem"){
 342                 *dst = ToolDiggingProperties();
 343                 return;
 344         }
 345         ToolItem *titem = (ToolItem*)item;
 346         *dst = tdef->getDiggingProperties(titem->getToolName());
 347 }
 348
 349 void ServerRemotePlayer::damageWieldedItem(u16 amount)
 350 {
 351         infostream<<"Damaging "<<getName()<<"'s wielded item for amount="
 352                         <<amount<<std::endl;
 353         InventoryList *list = inventory.getList("main");
 354         if(!list)
 355                 return;
 356         InventoryItem *item = list->getItem(m_selected_item);
 357         if(item && (std::string)item->getName() == "ToolItem"){
 358                 ToolItem *titem = (ToolItem*)item;
 359                 bool weared_out = titem->addWear(amount);
 360                 if(weared_out)
 361                         list->deleteItem(m_selected_item);
 362         }
 363 }
 364 bool ServerRemotePlayer::addToInventory(InventoryItem *item)
 365 {
 366         infostream<<"Adding "<<item->getName()<<" into "<<getName()
 367                         <<"'s inventory"<<std::endl;
 368
 369         InventoryList *ilist = inventory.getList("main");
 370         if(ilist == NULL)
 371                 return false;
 372
 373         // In creative mode, just delete the item
 374         if(g_settings->getBool("creative_mode")){
 375                 return false;
 376         }
 377
 378         // Skip if inventory has no free space
 379         if(ilist->roomForItem(item) == false)
 380         {
 381                 infostream<<"Player inventory has no free space"<<std::endl;
 382                 return false;
 383         }
 384
 385         // Add to inventory
 386         InventoryItem *leftover = ilist->addItem(item);
 387         assert(!leftover);
 388
 389         m_inventory_not_sent = true;
 390
 391         return true;
 392 }
 393 void ServerRemotePlayer::addToInventoryLater(InventoryItem *item)
 394 {
 395         infostream<<"Adding (later) "<<item->getName()<<" into "<<getName()
 396                         <<"'s inventory"<<std::endl;
 397         m_additional_items.push_back(item);
 398 }
 399 void ServerRemotePlayer::clearAddToInventoryLater()
 400 {
 401         for (std::vector<InventoryItem*>::iterator
 402                         i = m_additional_items.begin();
 403                         i != m_additional_items.end(); i++)
 404         {
 405                 delete *i;
 406         }
 407         m_additional_items.clear();
 408 }
 409 void ServerRemotePlayer::completeAddToInventoryLater(u16 preferred_index)
 410 {
 411         InventoryList *ilist = inventory.getList("main");
 412         if(ilist == NULL)
 413         {
 414                 clearAddToInventoryLater();
 415                 return;
 416         }
 417
 418         // In creative mode, just delete the items
 419         if(g_settings->getBool("creative_mode"))
 420         {
 421                 clearAddToInventoryLater();
 422                 return;
 423         }
 424
 425         for (std::vector<InventoryItem*>::iterator
 426                         i = m_additional_items.begin();
 427                         i != m_additional_items.end(); i++)
 428         {
 429                 InventoryItem *item = *i;
 430                 InventoryItem *leftover = item;
 431                 leftover = ilist->addItem(preferred_index, leftover);
 432                 leftover = ilist->addItem(leftover);
 433                 delete leftover;
 434         }
 435         m_additional_items.clear();
 436         m_inventory_not_sent = true;
 437 }
 438 void ServerRemotePlayer::setHP(s16 hp_)
 439 {
 440         s16 oldhp = hp;
 441
 442         // FIXME: don't hardcode maximum HP, make configurable per object
 443         if(hp_ < 0)
 444                 hp_ = 0;
 445         else if(hp_ > 20)
 446                 hp_ = 20;
 447         hp = hp_;
 448
 449         if(hp != oldhp)
 450                 m_hp_not_sent = true;
 451 }
 452 s16 ServerRemotePlayer::getHP()
 453 {
 454         return hp;
 455 }
 456
 457 #ifndef SERVER
 458 /*
 459         LocalPlayer
 460 */
 461
 462 LocalPlayer::LocalPlayer(IGameDef *gamedef):
 463         Player(gamedef),
 464         m_sneak_node(32767,32767,32767),
 465         m_sneak_node_exists(false)
 466 {
 467         // Initialize hp to 0, so that no hearts will be shown if server
 468         // doesn't support health points
 469         hp = 0;
 470 }
 471
 472 LocalPlayer::~LocalPlayer()
 473 {
 474 }
 475
 476 void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d,
 477                 core::list<CollisionInfo> *collision_info)
 478 {
 479         INodeDefManager *nodemgr = m_gamedef->ndef();
 480
 481         v3f position = getPosition();
 482         v3f oldpos = position;
 483         v3s16 oldpos_i = floatToInt(oldpos, BS);
 484
 485         v3f old_speed = m_speed;
 486
 487         /*std::cout<<"oldpos_i=("<<oldpos_i.X<<","<<oldpos_i.Y<<","
 488                         <<oldpos_i.Z<<")"<<std::endl;*/
 489
 490         /*
 491                 Calculate new position
 492         */
 493         position += m_speed * dtime;
 494
 495         // Skip collision detection if a special movement mode is used
 496         bool free_move = g_settings->getBool("free_move");
 497         if(free_move)
 498         {
 499                 setPosition(position);
 500                 return;
 501         }
 502
 503         /*
 504                 Collision detection
 505         */
 506
 507         // Player position in nodes
 508         v3s16 pos_i = floatToInt(position, BS);
 509
 510         /*
 511                 Check if player is in water (the oscillating value)
 512         */
 513         try{
 514                 // If in water, the threshold of coming out is at higher y
 515                 if(in_water)
 516                 {
 517                         v3s16 pp = floatToInt(position + v3f(0,BS*0.1,0), BS);
 518                         in_water = nodemgr->get(map.getNode(pp).getContent()).isLiquid();
 519                 }
 520                 // If not in water, the threshold of going in is at lower y
 521                 else
 522                 {
 523                         v3s16 pp = floatToInt(position + v3f(0,BS*0.5,0), BS);
 524                         in_water = nodemgr->get(map.getNode(pp).getContent()).isLiquid();
 525                 }
 526         }
 527         catch(InvalidPositionException &e)
 528         {
 529                 in_water = false;
 530         }
 531
 532         /*
 533                 Check if player is in water (the stable value)
 534         */
 535         try{
 536                 v3s16 pp = floatToInt(position + v3f(0,0,0), BS);
 537                 in_water_stable = nodemgr->get(map.getNode(pp).getContent()).isLiquid();
 538         }
 539         catch(InvalidPositionException &e)
 540         {
 541                 in_water_stable = false;
 542         }
 543
 544         /*
 545                 Check if player is climbing
 546         */
 547
 548         try {
 549                 v3s16 pp = floatToInt(position + v3f(0,0.5*BS,0), BS);
 550                 v3s16 pp2 = floatToInt(position + v3f(0,-0.2*BS,0), BS);
 551                 is_climbing = ((nodemgr->get(map.getNode(pp).getContent()).climbable ||
 552                 nodemgr->get(map.getNode(pp2).getContent()).climbable) && !free_move);
 553         }
 554         catch(InvalidPositionException &e)
 555         {
 556                 is_climbing = false;
 557         }
 558
 559         /*
 560                 Collision uncertainty radius
 561                 Make it a bit larger than the maximum distance of movement
 562         */
 563         //f32 d = pos_max_d * 1.1;
 564         // A fairly large value in here makes moving smoother
 565         f32 d = 0.15*BS;
 566
 567         // This should always apply, otherwise there are glitches
 568         assert(d > pos_max_d);
 569
 570         float player_radius = BS*0.35;
 571         float player_height = BS*1.7;
 572
 573         // Maximum distance over border for sneaking
 574         f32 sneak_max = BS*0.4;
 575
 576         /*
 577                 If sneaking, player has larger collision radius to keep from
 578                 falling
 579         */
 580         /*if(control.sneak)
 581                 player_radius = sneak_max + d*1.1;*/
 582
 583         /*
 584                 If sneaking, keep in range from the last walked node and don't
 585                 fall off from it
 586         */
 587         if(control.sneak && m_sneak_node_exists)
 588         {
 589                 f32 maxd = 0.5*BS + sneak_max;
 590                 v3f lwn_f = intToFloat(m_sneak_node, BS);
 591                 position.X = rangelim(position.X, lwn_f.X-maxd, lwn_f.X+maxd);
 592                 position.Z = rangelim(position.Z, lwn_f.Z-maxd, lwn_f.Z+maxd);
 593
 594                 f32 min_y = lwn_f.Y + 0.5*BS;
 595                 if(position.Y < min_y)
 596                 {
 597                         position.Y = min_y;
 598
 599                         //v3f old_speed = m_speed;
 600
 601                         if(m_speed.Y < 0)
 602                                 m_speed.Y = 0;
 603
 604                         /*if(collision_info)
 605                         {
 606                                 // Report fall collision
 607                                 if(old_speed.Y < m_speed.Y - 0.1)
 608                                 {
 609                                         CollisionInfo info;
 610                                         info.t = COLLISION_FALL;
 611                                         info.speed = m_speed.Y - old_speed.Y;
 612                                         collision_info->push_back(info);
 613                                 }
 614                         }*/
 615                 }
 616         }
 617
 618         /*
 619                 Calculate player collision box (new and old)
 620         */
 621         core::aabbox3d<f32> playerbox(
 622                 position.X - player_radius,
 623                 position.Y - 0.0,
 624                 position.Z - player_radius,
 625                 position.X + player_radius,
 626                 position.Y + player_height,
 627                 position.Z + player_radius
 628         );
 629         core::aabbox3d<f32> playerbox_old(
 630                 oldpos.X - player_radius,
 631                 oldpos.Y - 0.0,
 632                 oldpos.Z - player_radius,
 633                 oldpos.X + player_radius,
 634                 oldpos.Y + player_height,
 635                 oldpos.Z + player_radius
 636         );
 637
 638         /*
 639                 If the player's feet touch the topside of any node, this is
 640                 set to true.
 641
 642                 Player is allowed to jump when this is true.
 643         */
 644         touching_ground = false;
 645
 646         /*std::cout<<"Checking collisions for ("
 647                         <<oldpos_i.X<<","<<oldpos_i.Y<<","<<oldpos_i.Z
 648                         <<") -> ("
 649                         <<pos_i.X<<","<<pos_i.Y<<","<<pos_i.Z
 650                         <<"):"<<std::endl;*/
 651
 652         bool standing_on_unloaded = false;
 653
 654         /*
 655                 Go through every node around the player
 656         */
 657         for(s16 y = oldpos_i.Y - 1; y <= oldpos_i.Y + 2; y++)
 658         for(s16 z = oldpos_i.Z - 1; z <= oldpos_i.Z + 1; z++)
 659         for(s16 x = oldpos_i.X - 1; x <= oldpos_i.X + 1; x++)
 660         {
 661                 bool is_unloaded = false;
 662                 try{
 663                         // Player collides into walkable nodes
 664                         if(nodemgr->get(map.getNode(v3s16(x,y,z))).walkable == false)
 665                                 continue;
 666                 }
 667                 catch(InvalidPositionException &e)
 668                 {
 669                         is_unloaded = true;
 670                         // Doing nothing here will block the player from
 671                         // walking over map borders
 672                 }
 673
 674                 core::aabbox3d<f32> nodebox = getNodeBox(v3s16(x,y,z), BS);
 675
 676                 /*
 677                         See if the player is touching ground.
 678
 679                         Player touches ground if player's minimum Y is near node's
 680                         maximum Y and player's X-Z-area overlaps with the node's
 681                         X-Z-area.
 682
 683                         Use 0.15*BS so that it is easier to get on a node.
 684                 */
 685                 if(
 686                                 //fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < d
 687                                 fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < 0.15*BS
 688                                 && nodebox.MaxEdge.X-d > playerbox.MinEdge.X
 689                                 && nodebox.MinEdge.X+d < playerbox.MaxEdge.X
 690                                 && nodebox.MaxEdge.Z-d > playerbox.MinEdge.Z
 691                                 && nodebox.MinEdge.Z+d < playerbox.MaxEdge.Z
 692                 ){
 693                         touching_ground = true;
 694                         if(is_unloaded)
 695                                 standing_on_unloaded = true;
 696                 }
 697
 698                 // If player doesn't intersect with node, ignore node.
 699                 if(playerbox.intersectsWithBox(nodebox) == false)
 700                         continue;
 701
 702                 /*
 703                         Go through every axis
 704                 */
 705                 v3f dirs[3] = {
 706                         v3f(0,0,1), // back-front
 707                         v3f(0,1,0), // top-bottom
 708                         v3f(1,0,0), // right-left
 709                 };
 710                 for(u16 i=0; i<3; i++)
 711                 {
 712                         /*
 713                                 Calculate values along the axis
 714                         */
 715                         f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[i]);
 716                         f32 nodemin = nodebox.MinEdge.dotProduct(dirs[i]);
 717                         f32 playermax = playerbox.MaxEdge.dotProduct(dirs[i]);
 718                         f32 playermin = playerbox.MinEdge.dotProduct(dirs[i]);
 719                         f32 playermax_old = playerbox_old.MaxEdge.dotProduct(dirs[i]);
 720                         f32 playermin_old = playerbox_old.MinEdge.dotProduct(dirs[i]);
 721
 722                         /*
 723                                 Check collision for the axis.
 724                                 Collision happens when player is going through a surface.
 725                         */
 726                         /*f32 neg_d = d;
 727                         f32 pos_d = d;
 728                         // Make it easier to get on top of a node
 729                         if(i == 1)
 730                                 neg_d = 0.15*BS;
 731                         bool negative_axis_collides =
 732                                 (nodemax > playermin && nodemax <= playermin_old + neg_d
 733                                         && m_speed.dotProduct(dirs[i]) < 0);
 734                         bool positive_axis_collides =
 735                                 (nodemin < playermax && nodemin >= playermax_old - pos_d
 736                                         && m_speed.dotProduct(dirs[i]) > 0);*/
 737                         bool negative_axis_collides =
 738                                 (nodemax > playermin && nodemax <= playermin_old + d
 739                                         && m_speed.dotProduct(dirs[i]) < 0);
 740                         bool positive_axis_collides =
 741                                 (nodemin < playermax && nodemin >= playermax_old - d
 742                                         && m_speed.dotProduct(dirs[i]) > 0);
 743                         bool main_axis_collides =
 744                                         negative_axis_collides || positive_axis_collides;
 745
 746                         /*
 747                                 Check overlap of player and node in other axes
 748                         */
 749                         bool other_axes_overlap = true;
 750                         for(u16 j=0; j<3; j++)
 751                         {
 752                                 if(j == i)
 753                                         continue;
 754                                 f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[j]);
 755                                 f32 nodemin = nodebox.MinEdge.dotProduct(dirs[j]);
 756                                 f32 playermax = playerbox.MaxEdge.dotProduct(dirs[j]);
 757                                 f32 playermin = playerbox.MinEdge.dotProduct(dirs[j]);
 758                                 if(!(nodemax - d > playermin && nodemin + d < playermax))
 759                                 {
 760                                         other_axes_overlap = false;
 761                                         break;
 762                                 }
 763                         }
 764
 765                         /*
 766                                 If this is a collision, revert the position in the main
 767                                 direction.
 768                         */
 769                         if(other_axes_overlap && main_axis_collides)
 770                         {
 771                                 //v3f old_speed = m_speed;
 772
 773                                 m_speed -= m_speed.dotProduct(dirs[i]) * dirs[i];
 774                                 position -= position.dotProduct(dirs[i]) * dirs[i];
 775                                 position += oldpos.dotProduct(dirs[i]) * dirs[i];
 776
 777                                 /*if(collision_info)
 778                                 {
 779                                         // Report fall collision
 780                                         if(old_speed.Y < m_speed.Y - 0.1)
 781                                         {
 782                                                 CollisionInfo info;
 783                                                 info.t = COLLISION_FALL;
 784                                                 info.speed = m_speed.Y - old_speed.Y;
 785                                                 collision_info->push_back(info);
 786                                         }
 787                                 }*/
 788                         }
 789
 790                 }
 791         } // xyz
 792
 793         /*
 794                 Check the nodes under the player to see from which node the
 795                 player is sneaking from, if any.
 796         */
 797         {
 798                 v3s16 pos_i_bottom = floatToInt(position - v3f(0,BS/2,0), BS);
 799                 v2f player_p2df(position.X, position.Z);
 800                 f32 min_distance_f = 100000.0*BS;
 801                 // If already seeking from some node, compare to it.
 802                 /*if(m_sneak_node_exists)
 803                 {
 804                         v3f sneaknode_pf = intToFloat(m_sneak_node, BS);
 805                         v2f sneaknode_p2df(sneaknode_pf.X, sneaknode_pf.Z);
 806                         f32 d_horiz_f = player_p2df.getDistanceFrom(sneaknode_p2df);
 807                         f32 d_vert_f = fabs(sneaknode_pf.Y + BS*0.5 - position.Y);
 808                         // Ignore if player is not on the same level (likely dropped)
 809                         if(d_vert_f < 0.15*BS)
 810                                 min_distance_f = d_horiz_f;
 811                 }*/
 812                 v3s16 new_sneak_node = m_sneak_node;
 813                 for(s16 x=-1; x<=1; x++)
 814                 for(s16 z=-1; z<=1; z++)
 815                 {
 816                         v3s16 p = pos_i_bottom + v3s16(x,0,z);
 817                         v3f pf = intToFloat(p, BS);
 818                         v2f node_p2df(pf.X, pf.Z);
 819                         f32 distance_f = player_p2df.getDistanceFrom(node_p2df);
 820                         f32 max_axis_distance_f = MYMAX(
 821                                         fabs(player_p2df.X-node_p2df.X),
 822                                         fabs(player_p2df.Y-node_p2df.Y));
 823
 824                         if(distance_f > min_distance_f ||
 825                                         max_axis_distance_f > 0.5*BS + sneak_max + 0.1*BS)
 826                                 continue;
 827
 828                         try{
 829                                 // The node to be sneaked on has to be walkable
 830                                 if(nodemgr->get(map.getNode(p)).walkable == false)
 831                                         continue;
 832                                 // And the node above it has to be nonwalkable
 833                                 if(nodemgr->get(map.getNode(p+v3s16(0,1,0))).walkable == true)
 834                                         continue;
 835                         }
 836                         catch(InvalidPositionException &e)
 837                         {
 838                                 continue;
 839                         }
 840
 841                         min_distance_f = distance_f;
 842                         new_sneak_node = p;
 843                 }
 844
 845                 bool sneak_node_found = (min_distance_f < 100000.0*BS*0.9);
 846
 847                 if(control.sneak && m_sneak_node_exists)
 848                 {
 849                         if(sneak_node_found)
 850                                 m_sneak_node = new_sneak_node;
 851                 }
 852                 else
 853                 {
 854                         m_sneak_node = new_sneak_node;
 855                         m_sneak_node_exists = sneak_node_found;
 856                 }
 857
 858                 /*
 859                         If sneaking, the player's collision box can be in air, so
 860                         this has to be set explicitly
 861                 */
 862                 if(sneak_node_found && control.sneak)
 863                         touching_ground = true;
 864         }
 865
 866         /*
 867                 Set new position
 868         */
 869         setPosition(position);
 870
 871         /*
 872                 Report collisions
 873         */
 874         if(collision_info)
 875         {
 876                 // Report fall collision
 877                 if(old_speed.Y < m_speed.Y - 0.1 && !standing_on_unloaded)
 878                 {
 879                         CollisionInfo info;
 880                         info.t = COLLISION_FALL;
 881                         info.speed = m_speed.Y - old_speed.Y;
 882                         collision_info->push_back(info);
 883                 }
 884         }
 885 }
 886
 887 void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d)
 888 {
 889         move(dtime, map, pos_max_d, NULL);
 890 }
 891
 892 void LocalPlayer::applyControl(float dtime)
 893 {
 894         // Clear stuff
 895         swimming_up = false;
 896
 897         // Random constants
 898         f32 walk_acceleration = 4.0 * BS;
 899         f32 walkspeed_max = 4.0 * BS;
 900
 901         setPitch(control.pitch);
 902         setYaw(control.yaw);
 903
 904         v3f move_direction = v3f(0,0,1);
 905         move_direction.rotateXZBy(getYaw());
 906
 907         v3f speed = v3f(0,0,0);
 908
 909         bool free_move = g_settings->getBool("free_move");
 910         bool fast_move = g_settings->getBool("fast_move");
 911         bool continuous_forward = g_settings->getBool("continuous_forward");
 912
 913         if(free_move || is_climbing)
 914         {
 915                 v3f speed = getSpeed();
 916                 speed.Y = 0;
 917                 setSpeed(speed);
 918         }
 919
 920         // Whether superspeed mode is used or not
 921         bool superspeed = false;
 922
 923         // If free movement and fast movement, always move fast
 924         if(free_move && fast_move)
 925                 superspeed = true;
 926
 927         // Auxiliary button 1 (E)
 928         if(control.aux1)
 929         {
 930                 if(free_move)
 931                 {
 932                         // In free movement mode, aux1 descends
 933                         v3f speed = getSpeed();
 934                         if(fast_move)
 935                                 speed.Y = -20*BS;
 936                         else
 937                                 speed.Y = -walkspeed_max;
 938                         setSpeed(speed);
 939                 }
 940                 else if(is_climbing)
 941                 {
 942                         v3f speed = getSpeed();
 943                         speed.Y = -3*BS;
 944                         setSpeed(speed);
 945                 }
 946                 else
 947                 {
 948                         // If not free movement but fast is allowed, aux1 is
 949                         // "Turbo button"
 950                         if(fast_move)
 951                                 superspeed = true;
 952                 }
 953         }
 954
 955         if(continuous_forward)
 956                 speed += move_direction;
 957
 958         if(control.up)
 959         {
 960                 if(continuous_forward)
 961                         superspeed = true;
 962                 else
 963                         speed += move_direction;
 964         }
 965         if(control.down)
 966         {
 967                 speed -= move_direction;
 968         }
 969         if(control.left)
 970         {
 971                 speed += move_direction.crossProduct(v3f(0,1,0));
 972         }
 973         if(control.right)
 974         {
 975                 speed += move_direction.crossProduct(v3f(0,-1,0));
 976         }
 977         if(control.jump)
 978         {
 979                 if(free_move)
 980                 {
 981                         v3f speed = getSpeed();
 982                         if(fast_move)
 983                                 speed.Y = 20*BS;
 984                         else
 985                                 speed.Y = walkspeed_max;
 986                         setSpeed(speed);
 987                 }
 988                 else if(touching_ground)
 989                 {
 990                         v3f speed = getSpeed();
 991                         /*
 992                                 NOTE: The d value in move() affects jump height by
 993                                 raising the height at which the jump speed is kept
 994                                 at its starting value
 995                         */
 996                         speed.Y = 6.5*BS;
 997                         setSpeed(speed);
 998                 }
 999                 // Use the oscillating value for getting out of water
1000                 // (so that the player doesn't fly on the surface)
1001                 else if(in_water)
1002                 {
1003                         v3f speed = getSpeed();
1004                         speed.Y = 1.5*BS;
1005                         setSpeed(speed);
1006                         swimming_up = true;
1007                 }
1008                 else if(is_climbing)
1009                 {
1010                         v3f speed = getSpeed();
1011                         speed.Y = 3*BS;
1012                         setSpeed(speed);
1013                 }
1014         }
1015
1016         // The speed of the player (Y is ignored)
1017         if(superspeed)
1018                 speed = speed.normalize() * walkspeed_max * 5.0;
1019         else if(control.sneak)
1020                 speed = speed.normalize() * walkspeed_max / 3.0;
1021         else
1022                 speed = speed.normalize() * walkspeed_max;
1023
1024         f32 inc = walk_acceleration * BS * dtime;
1025
1026         // Faster acceleration if fast and free movement
1027         if(free_move && fast_move)
1028                 inc = walk_acceleration * BS * dtime * 10;
1029
1030         // Accelerate to target speed with maximum increment
1031         accelerate(speed, inc);
1032 }
1033 #endif
1034