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