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 // Convert a privileges value into a human-readable string,
  27 // with each component separated by a comma.
  28 std::wstring privsToString(u64 privs)
  29 {
  30         std::wostringstream os(std::ios_base::binary);
  31         if(privs & PRIV_BUILD)
  32                 os<<L"build,";
  33         if(privs & PRIV_TELEPORT)
  34                 os<<L"teleport,";
  35         if(privs & PRIV_SETTIME)
  36                 os<<L"settime,";
  37         if(privs & PRIV_PRIVS)
  38                 os<<L"privs,";
  39         if(privs & PRIV_SHOUT)
  40                 os<<L"shout,";
  41         if(os.tellp())
  42         {
  43                 // Drop the trailing comma. (Why on earth can't
  44                 // you truncate a C++ stream anyway???)
  45                 std::wstring tmp = os.str();
  46                 return tmp.substr(0, tmp.length() -1);
  47         }
  48         return os.str();
  49 }
  50
  51 // Converts a comma-seperated list of privilege values into a
  52 // privileges value. The reverse of privsToString(). Returns
  53 // PRIV_INVALID if there is anything wrong with the input.
  54 u64 stringToPrivs(std::wstring str)
  55 {
  56         u64 privs=0;
  57         std::vector<std::wstring> pr;
  58         pr=str_split(str, ',');
  59         for(std::vector<std::wstring>::iterator i = pr.begin();
  60                 i != pr.end(); ++i)
  61         {
  62                 if(*i == L"build")
  63                         privs |= PRIV_BUILD;
  64                 else if(*i == L"teleport")
  65                         privs |= PRIV_TELEPORT;
  66                 else if(*i == L"settime")
  67                         privs |= PRIV_SETTIME;
  68                 else if(*i == L"privs")
  69                         privs |= PRIV_PRIVS;
  70                 else if(*i == L"shout")
  71                         privs |= PRIV_SHOUT;
  72                 else
  73                         return PRIV_INVALID;
  74         }
  75         return privs;
  76 }
  77
  78
  79 Player::Player():
  80         touching_ground(false),
  81         in_water(false),
  82         in_water_stable(false),
  83         swimming_up(false),
  84         craftresult_is_preview(true),
  85         hp(20),
  86         privs(PRIV_DEFAULT),
  87         peer_id(PEER_ID_INEXISTENT),
  88         m_pitch(0),
  89         m_yaw(0),
  90         m_speed(0,0,0),
  91         m_position(0,0,0)
  92 {
  93         updateName("<not set>");
  94         updatePassword("");
  95         resetInventory();
  96 }
  97
  98 Player::~Player()
  99 {
 100 }
 101
 102 void Player::resetInventory()
 103 {
 104         inventory.clear();
 105         inventory.addList("main", PLAYER_INVENTORY_SIZE);
 106         inventory.addList("craft", 9);
 107         inventory.addList("craftresult", 1);
 108 }
 109
 110 // Y direction is ignored
 111 void Player::accelerate(v3f target_speed, f32 max_increase)
 112 {
 113         v3f d_wanted = target_speed - m_speed;
 114         d_wanted.Y = 0;
 115         f32 dl_wanted = d_wanted.getLength();
 116         f32 dl = dl_wanted;
 117         if(dl > max_increase)
 118                 dl = max_increase;
 119
 120         v3f d = d_wanted.normalize() * dl;
 121
 122         m_speed.X += d.X;
 123         m_speed.Z += d.Z;
 124         //m_speed += d;
 125
 126 #if 0 // old code
 127         if(m_speed.X < target_speed.X - max_increase)
 128                 m_speed.X += max_increase;
 129         else if(m_speed.X > target_speed.X + max_increase)
 130                 m_speed.X -= max_increase;
 131         else if(m_speed.X < target_speed.X)
 132                 m_speed.X = target_speed.X;
 133         else if(m_speed.X > target_speed.X)
 134                 m_speed.X = target_speed.X;
 135
 136         if(m_speed.Z < target_speed.Z - max_increase)
 137                 m_speed.Z += max_increase;
 138         else if(m_speed.Z > target_speed.Z + max_increase)
 139                 m_speed.Z -= max_increase;
 140         else if(m_speed.Z < target_speed.Z)
 141                 m_speed.Z = target_speed.Z;
 142         else if(m_speed.Z > target_speed.Z)
 143                 m_speed.Z = target_speed.Z;
 144 #endif
 145 }
 146
 147 void Player::serialize(std::ostream &os)
 148 {
 149         // Utilize a Settings object for storing values
 150         Settings args;
 151         args.setS32("version", 1);
 152         args.set("name", m_name);
 153         args.set("password", m_password);
 154         args.setFloat("pitch", m_pitch);
 155         args.setFloat("yaw", m_yaw);
 156         args.setV3F("position", m_position);
 157         args.setBool("craftresult_is_preview", craftresult_is_preview);
 158         args.setS32("hp", hp);
 159         args.setU64("privs", privs);
 160
 161         args.writeLines(os);
 162
 163         os<<"PlayerArgsEnd\n";
 164
 165         inventory.serialize(os);
 166 }
 167
 168 void Player::deSerialize(std::istream &is)
 169 {
 170         Settings args;
 171
 172         for(;;)
 173         {
 174                 if(is.eof())
 175                         throw SerializationError
 176                                         ("Player::deSerialize(): PlayerArgsEnd not found");
 177                 std::string line;
 178                 std::getline(is, line);
 179                 std::string trimmedline = trim(line);
 180                 if(trimmedline == "PlayerArgsEnd")
 181                         break;
 182                 args.parseConfigLine(line);
 183         }
 184
 185         //args.getS32("version");
 186         std::string name = args.get("name");
 187         updateName(name.c_str());
 188         std::string password = "";
 189         if(args.exists("password"))
 190                 password = args.get("password");
 191         updatePassword(password.c_str());
 192         m_pitch = args.getFloat("pitch");
 193         m_yaw = args.getFloat("yaw");
 194         m_position = args.getV3F("position");
 195         try{
 196                 craftresult_is_preview = args.getBool("craftresult_is_preview");
 197         }catch(SettingNotFoundException &e){
 198                 craftresult_is_preview = true;
 199         }
 200         try{
 201                 hp = args.getS32("hp");
 202         }catch(SettingNotFoundException &e){
 203                 hp = 20;
 204         }
 205         try{
 206                 std::string sprivs = args.get("privs");
 207                 if(sprivs == "all")
 208                 {
 209                         privs = PRIV_ALL;
 210                 }
 211                 else
 212                 {
 213                         std::istringstream ss(sprivs);
 214                         ss>>privs;
 215                 }
 216         }catch(SettingNotFoundException &e){
 217                 privs = PRIV_DEFAULT;
 218         }
 219
 220         inventory.deSerialize(is);
 221 }
 222
 223 /*
 224         RemotePlayer
 225 */
 226
 227 #ifndef SERVER
 228
 229 RemotePlayer::RemotePlayer(
 230                 scene::ISceneNode* parent,
 231                 IrrlichtDevice *device,
 232                 s32 id):
 233         scene::ISceneNode(parent, (device==NULL)?NULL:device->getSceneManager(), id),
 234         m_text(NULL)
 235 {
 236         m_box = core::aabbox3d<f32>(-BS/2,0,-BS/2,BS/2,BS*2,BS/2);
 237
 238         if(parent != NULL && device != NULL)
 239         {
 240                 // ISceneNode stores a member called SceneManager
 241                 scene::ISceneManager* mgr = SceneManager;
 242                 video::IVideoDriver* driver = mgr->getVideoDriver();
 243                 gui::IGUIEnvironment* gui = device->getGUIEnvironment();
 244
 245                 // Add a text node for showing the name
 246                 wchar_t wname[1] = {0};
 247                 m_text = mgr->addTextSceneNode(gui->getBuiltInFont(),
 248                                 wname, video::SColor(255,255,255,255), this);
 249                 m_text->setPosition(v3f(0, (f32)BS*2.1, 0));
 250
 251                 // Attach a simple mesh to the player for showing an image
 252                 scene::SMesh *mesh = new scene::SMesh();
 253                 { // Front
 254                 scene::IMeshBuffer *buf = new scene::SMeshBuffer();
 255                 video::SColor c(255,255,255,255);
 256                 video::S3DVertex vertices[4] =
 257                 {
 258                         video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
 259                         video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
 260                         video::S3DVertex(BS/2,BS*2,0, 0,0,0, c, 1,0),
 261                         video::S3DVertex(-BS/2,BS*2,0, 0,0,0, c, 0,0),
 262                 };
 263                 u16 indices[] = {0,1,2,2,3,0};
 264                 buf->append(vertices, 4, indices, 6);
 265                 // Set material
 266                 buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
 267                 //buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
 268                 buf->getMaterial().setTexture(0, driver->getTexture(getTexturePath("player.png").c_str()));
 269                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
 270                 buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
 271                 //buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 272                 buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 273                 // Add to mesh
 274                 mesh->addMeshBuffer(buf);
 275                 buf->drop();
 276                 }
 277                 { // Back
 278                 scene::IMeshBuffer *buf = new scene::SMeshBuffer();
 279                 video::SColor c(255,255,255,255);
 280                 video::S3DVertex vertices[4] =
 281                 {
 282                         video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
 283                         video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
 284                         video::S3DVertex(-BS/2,BS*2,0, 0,0,0, c, 0,0),
 285                         video::S3DVertex(BS/2,BS*2,0, 0,0,0, c, 1,0),
 286                 };
 287                 u16 indices[] = {0,1,2,2,3,0};
 288                 buf->append(vertices, 4, indices, 6);
 289                 // Set material
 290                 buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
 291                 //buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
 292                 buf->getMaterial().setTexture(0, driver->getTexture(getTexturePath("player_back.png").c_str()));
 293                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
 294                 buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
 295                 buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 296                 // Add to mesh
 297                 mesh->addMeshBuffer(buf);
 298                 buf->drop();
 299                 }
 300                 m_node = mgr->addMeshSceneNode(mesh, this);
 301                 mesh->drop();
 302                 m_node->setPosition(v3f(0,0,0));
 303         }
 304 }
 305
 306 RemotePlayer::~RemotePlayer()
 307 {
 308         if(SceneManager != NULL)
 309                 ISceneNode::remove();
 310 }
 311
 312 void RemotePlayer::updateName(const char *name)
 313 {
 314         Player::updateName(name);
 315         if(m_text != NULL)
 316         {
 317                 wchar_t wname[PLAYERNAME_SIZE];
 318                 mbstowcs(wname, m_name, strlen(m_name)+1);
 319                 m_text->setText(wname);
 320         }
 321 }
 322
 323 void RemotePlayer::move(f32 dtime, Map &map, f32 pos_max_d)
 324 {
 325         m_pos_animation_time_counter += dtime;
 326         m_pos_animation_counter += dtime;
 327         v3f movevector = m_position - m_oldpos;
 328         f32 moveratio;
 329         if(m_pos_animation_time < 0.001)
 330                 moveratio = 1.0;
 331         else
 332                 moveratio = m_pos_animation_counter / m_pos_animation_time;
 333         if(moveratio > 1.5)
 334                 moveratio = 1.5;
 335         m_showpos = m_oldpos + movevector * moveratio;
 336
 337         ISceneNode::setPosition(m_showpos);
 338 }
 339
 340 #endif
 341
 342 #ifndef SERVER
 343 /*
 344         LocalPlayer
 345 */
 346
 347 LocalPlayer::LocalPlayer():
 348         m_sneak_node(32767,32767,32767),
 349         m_sneak_node_exists(false)
 350 {
 351         // Initialize hp to 0, so that no hearts will be shown if server
 352         // doesn't support health points
 353         hp = 0;
 354 }
 355
 356 LocalPlayer::~LocalPlayer()
 357 {
 358 }
 359
 360 void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d,
 361                 core::list<CollisionInfo> *collision_info)
 362 {
 363         v3f position = getPosition();
 364         v3f oldpos = position;
 365         v3s16 oldpos_i = floatToInt(oldpos, BS);
 366
 367         /*std::cout<<"oldpos_i=("<<oldpos_i.X<<","<<oldpos_i.Y<<","
 368                         <<oldpos_i.Z<<")"<<std::endl;*/
 369
 370         /*
 371                 Calculate new position
 372         */
 373         position += m_speed * dtime;
 374
 375         // Skip collision detection if a special movement mode is used
 376         bool free_move = g_settings.getBool("free_move");
 377         if(free_move)
 378         {
 379                 setPosition(position);
 380                 return;
 381         }
 382
 383         /*
 384                 Collision detection
 385         */
 386
 387         // Player position in nodes
 388         v3s16 pos_i = floatToInt(position, BS);
 389
 390         /*
 391                 Check if player is in water (the oscillating value)
 392         */
 393         try{
 394                 // If in water, the threshold of coming out is at higher y
 395                 if(in_water)
 396                 {
 397                         v3s16 pp = floatToInt(position + v3f(0,BS*0.1,0), BS);
 398                         in_water = content_liquid(map.getNode(pp).d);
 399                 }
 400                 // If not in water, the threshold of going in is at lower y
 401                 else
 402                 {
 403                         v3s16 pp = floatToInt(position + v3f(0,BS*0.5,0), BS);
 404                         in_water = content_liquid(map.getNode(pp).d);
 405                 }
 406         }
 407         catch(InvalidPositionException &e)
 408         {
 409                 in_water = false;
 410         }
 411
 412         /*
 413                 Check if player is in water (the stable value)
 414         */
 415         try{
 416                 v3s16 pp = floatToInt(position + v3f(0,0,0), BS);
 417                 in_water_stable = content_liquid(map.getNode(pp).d);
 418         }
 419         catch(InvalidPositionException &e)
 420         {
 421                 in_water_stable = false;
 422         }
 423
 424         /*
 425                 Collision uncertainty radius
 426                 Make it a bit larger than the maximum distance of movement
 427         */
 428         //f32 d = pos_max_d * 1.1;
 429         // A fairly large value in here makes moving smoother
 430         f32 d = 0.15*BS;
 431
 432         // This should always apply, otherwise there are glitches
 433         assert(d > pos_max_d);
 434
 435         float player_radius = BS*0.35;
 436         float player_height = BS*1.7;
 437
 438         // Maximum distance over border for sneaking
 439         f32 sneak_max = BS*0.4;
 440
 441         /*
 442                 If sneaking, player has larger collision radius to keep from
 443                 falling
 444         */
 445         /*if(control.sneak)
 446                 player_radius = sneak_max + d*1.1;*/
 447
 448         /*
 449                 If sneaking, keep in range from the last walked node and don't
 450                 fall off from it
 451         */
 452         if(control.sneak && m_sneak_node_exists)
 453         {
 454                 f32 maxd = 0.5*BS + sneak_max;
 455                 v3f lwn_f = intToFloat(m_sneak_node, BS);
 456                 position.X = rangelim(position.X, lwn_f.X-maxd, lwn_f.X+maxd);
 457                 position.Z = rangelim(position.Z, lwn_f.Z-maxd, lwn_f.Z+maxd);
 458
 459                 f32 min_y = lwn_f.Y + 0.5*BS;
 460                 if(position.Y < min_y)
 461                 {
 462                         position.Y = min_y;
 463                         if(m_speed.Y < 0)
 464                                 m_speed.Y = 0;
 465                 }
 466         }
 467
 468         /*
 469                 Calculate player collision box (new and old)
 470         */
 471         core::aabbox3d<f32> playerbox(
 472                 position.X - player_radius,
 473                 position.Y - 0.0,
 474                 position.Z - player_radius,
 475                 position.X + player_radius,
 476                 position.Y + player_height,
 477                 position.Z + player_radius
 478         );
 479         core::aabbox3d<f32> playerbox_old(
 480                 oldpos.X - player_radius,
 481                 oldpos.Y - 0.0,
 482                 oldpos.Z - player_radius,
 483                 oldpos.X + player_radius,
 484                 oldpos.Y + player_height,
 485                 oldpos.Z + player_radius
 486         );
 487
 488         /*
 489                 If the player's feet touch the topside of any node, this is
 490                 set to true.
 491
 492                 Player is allowed to jump when this is true.
 493         */
 494         touching_ground = false;
 495
 496         /*std::cout<<"Checking collisions for ("
 497                         <<oldpos_i.X<<","<<oldpos_i.Y<<","<<oldpos_i.Z
 498                         <<") -> ("
 499                         <<pos_i.X<<","<<pos_i.Y<<","<<pos_i.Z
 500                         <<"):"<<std::endl;*/
 501
 502         /*
 503                 Go through every node around the player
 504         */
 505         for(s16 y = oldpos_i.Y - 1; y <= oldpos_i.Y + 2; y++)
 506         for(s16 z = oldpos_i.Z - 1; z <= oldpos_i.Z + 1; z++)
 507         for(s16 x = oldpos_i.X - 1; x <= oldpos_i.X + 1; x++)
 508         {
 509                 try{
 510                         // Player collides into walkable nodes
 511                         if(content_walkable(map.getNode(v3s16(x,y,z)).d) == false)
 512                                 continue;
 513                 }
 514                 catch(InvalidPositionException &e)
 515                 {
 516                         // Doing nothing here will block the player from
 517                         // walking over map borders
 518                 }
 519
 520                 core::aabbox3d<f32> nodebox = getNodeBox(v3s16(x,y,z), BS);
 521
 522                 /*
 523                         See if the player is touching ground.
 524
 525                         Player touches ground if player's minimum Y is near node's
 526                         maximum Y and player's X-Z-area overlaps with the node's
 527                         X-Z-area.
 528
 529                         Use 0.15*BS so that it is easier to get on a node.
 530                 */
 531                 if(
 532                                 //fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < d
 533                                 fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < 0.15*BS
 534                                 && nodebox.MaxEdge.X-d > playerbox.MinEdge.X
 535                                 && nodebox.MinEdge.X+d < playerbox.MaxEdge.X
 536                                 && nodebox.MaxEdge.Z-d > playerbox.MinEdge.Z
 537                                 && nodebox.MinEdge.Z+d < playerbox.MaxEdge.Z
 538                 ){
 539                         touching_ground = 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).d) == false)
 675                                         continue;
 676                                 // And the node above it has to be nonwalkable
 677                                 if(content_walkable(map.getNode(p+v3s16(0,1,0)).d) == 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 void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d)
 717 {
 718         move(dtime, map, pos_max_d, NULL);
 719 }
 720
 721 void LocalPlayer::applyControl(float dtime)
 722 {
 723         // Clear stuff
 724         swimming_up = false;
 725
 726         // Random constants
 727         f32 walk_acceleration = 4.0 * BS;
 728         f32 walkspeed_max = 4.0 * BS;
 729
 730         setPitch(control.pitch);
 731         setYaw(control.yaw);
 732
 733         v3f move_direction = v3f(0,0,1);
 734         move_direction.rotateXZBy(getYaw());
 735
 736         v3f speed = v3f(0,0,0);
 737
 738         bool free_move = g_settings.getBool("free_move");
 739         bool fast_move = g_settings.getBool("fast_move");
 740         bool continuous_forward = g_settings.getBool("continuous_forward");
 741
 742         if(free_move)
 743         {
 744                 v3f speed = getSpeed();
 745                 speed.Y = 0;
 746                 setSpeed(speed);
 747         }
 748
 749         // Whether superspeed mode is used or not
 750         bool superspeed = false;
 751
 752         // If free movement and fast movement, always move fast
 753         if(free_move && fast_move)
 754                 superspeed = true;
 755
 756         // Auxiliary button 1 (E)
 757         if(control.aux1)
 758         {
 759                 if(free_move)
 760                 {
 761                         // In free movement mode, aux1 descends
 762                         v3f speed = getSpeed();
 763                         if(fast_move)
 764                                 speed.Y = -20*BS;
 765                         else
 766                                 speed.Y = -walkspeed_max;
 767                         setSpeed(speed);
 768                 }
 769                 else
 770                 {
 771                         // If not free movement but fast is allowed, aux1 is
 772                         // "Turbo button"
 773                         if(fast_move)
 774                                 superspeed = true;
 775                 }
 776         }
 777
 778         if(continuous_forward)
 779                 speed += move_direction;
 780
 781         if(control.up)
 782         {
 783                 if(continuous_forward)
 784                         superspeed = true;
 785                 else
 786                         speed += move_direction;
 787         }
 788         if(control.down)
 789         {
 790                 speed -= move_direction;
 791         }
 792         if(control.left)
 793         {
 794                 speed += move_direction.crossProduct(v3f(0,1,0));
 795         }
 796         if(control.right)
 797         {
 798                 speed += move_direction.crossProduct(v3f(0,-1,0));
 799         }
 800         if(control.jump)
 801         {
 802                 if(free_move)
 803                 {
 804                         v3f speed = getSpeed();
 805                         if(fast_move)
 806                                 speed.Y = 20*BS;
 807                         else
 808                                 speed.Y = walkspeed_max;
 809                         setSpeed(speed);
 810                 }
 811                 else if(touching_ground)
 812                 {
 813                         v3f speed = getSpeed();
 814                         /*
 815                                 NOTE: The d value in move() affects jump height by
 816                                 raising the height at which the jump speed is kept
 817                                 at its starting value
 818                         */
 819                         speed.Y = 6.5*BS;
 820                         setSpeed(speed);
 821                 }
 822                 // Use the oscillating value for getting out of water
 823                 // (so that the player doesn't fly on the surface)
 824                 else if(in_water)
 825                 {
 826                         v3f speed = getSpeed();
 827                         speed.Y = 1.5*BS;
 828                         setSpeed(speed);
 829                         swimming_up = true;
 830                 }
 831         }
 832
 833         // The speed of the player (Y is ignored)
 834         if(superspeed)
 835                 speed = speed.normalize() * walkspeed_max * 5.0;
 836         else if(control.sneak)
 837                 speed = speed.normalize() * walkspeed_max / 3.0;
 838         else
 839                 speed = speed.normalize() * walkspeed_max;
 840
 841         f32 inc = walk_acceleration * BS * dtime;
 842
 843         // Faster acceleration if fast and free movement
 844         if(free_move && fast_move)
 845                 inc = walk_acceleration * BS * dtime * 10;
 846
 847         // Accelerate to target speed with maximum increment
 848         accelerate(speed, inc);
 849 }
 850 #endif
 851