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