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