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