src/player.cpp

   1 /*
   2 Minetest-c55
   3 Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation; either version 2 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "player.h"
  21 #include "map.h"
  22 #include "connection.h"
  23 #include "constants.h"
  24 #include "utility.h"
  25 #ifndef SERVER
  26 #include <ITextSceneNode.h>
  27 #endif
  28 #include "settings.h"
  29
  30 Player::Player():
  31         touching_ground(false),
  32         in_water(false),
  33         in_water_stable(false),
  34         is_climbing(false),
  35         swimming_up(false),
  36         is_frozen(false),
  37         inventory_backup(NULL),
  38         craftresult_is_preview(true),
  39         hp(20),
  40         peer_id(PEER_ID_INEXISTENT),
  41         m_selected_item(0),
  42         m_pitch(0),
  43         m_yaw(0),
  44         m_speed(0,0,0),
  45         m_position(0,0,0)
  46 {
  47         updateName("<not set>");
  48         resetInventory();
  49 }
  50
  51 Player::~Player()
  52 {
  53         delete inventory_backup;
  54 }
  55
  56 void Player::wieldItem(u16 item)
  57 {
  58         m_selected_item = item;
  59 }
  60
  61 void Player::resetInventory()
  62 {
  63         inventory.clear();
  64         inventory.addList("main", PLAYER_INVENTORY_SIZE);
  65         inventory.addList("craft", 9);
  66         inventory.addList("craftresult", 1);
  67 }
  68
  69 // Y direction is ignored
  70 void Player::accelerate(v3f target_speed, f32 max_increase)
  71 {
  72         v3f d_wanted = target_speed - m_speed;
  73         d_wanted.Y = 0;
  74         f32 dl_wanted = d_wanted.getLength();
  75         f32 dl = dl_wanted;
  76         if(dl > max_increase)
  77                 dl = max_increase;
  78
  79         v3f d = d_wanted.normalize() * dl;
  80
  81         m_speed.X += d.X;
  82         m_speed.Z += d.Z;
  83         //m_speed += d;
  84
  85 #if 0 // old code
  86         if(m_speed.X < target_speed.X - max_increase)
  87                 m_speed.X += max_increase;
  88         else if(m_speed.X > target_speed.X + max_increase)
  89                 m_speed.X -= max_increase;
  90         else if(m_speed.X < target_speed.X)
  91                 m_speed.X = target_speed.X;
  92         else if(m_speed.X > target_speed.X)
  93                 m_speed.X = target_speed.X;
  94
  95         if(m_speed.Z < target_speed.Z - max_increase)
  96                 m_speed.Z += max_increase;
  97         else if(m_speed.Z > target_speed.Z + max_increase)
  98                 m_speed.Z -= max_increase;
  99         else if(m_speed.Z < target_speed.Z)
 100                 m_speed.Z = target_speed.Z;
 101         else if(m_speed.Z > target_speed.Z)
 102                 m_speed.Z = target_speed.Z;
 103 #endif
 104 }
 105
 106 void Player::serialize(std::ostream &os)
 107 {
 108         // Utilize a Settings object for storing values
 109         Settings args;
 110         args.setS32("version", 1);
 111         args.set("name", m_name);
 112         //args.set("password", m_password);
 113         args.setFloat("pitch", m_pitch);
 114         args.setFloat("yaw", m_yaw);
 115         args.setV3F("position", m_position);
 116         args.setBool("craftresult_is_preview", craftresult_is_preview);
 117         args.setS32("hp", hp);
 118
 119         args.writeLines(os);
 120
 121         os<<"PlayerArgsEnd\n";
 122
 123         // If actual inventory is backed up due to creative mode, save it
 124         // instead of the dummy creative mode inventory
 125         if(inventory_backup)
 126                 inventory_backup->serialize(os);
 127         else
 128                 inventory.serialize(os);
 129 }
 130
 131 void Player::deSerialize(std::istream &is)
 132 {
 133         Settings args;
 134
 135         for(;;)
 136         {
 137                 if(is.eof())
 138                         throw SerializationError
 139                                         ("Player::deSerialize(): PlayerArgsEnd not found");
 140                 std::string line;
 141                 std::getline(is, line);
 142                 std::string trimmedline = trim(line);
 143                 if(trimmedline == "PlayerArgsEnd")
 144                         break;
 145                 args.parseConfigLine(line);
 146         }
 147
 148         //args.getS32("version");
 149         std::string name = args.get("name");
 150         updateName(name.c_str());
 151         /*std::string password = "";
 152         if(args.exists("password"))
 153                 password = args.get("password");
 154         updatePassword(password.c_str());*/
 155         m_pitch = args.getFloat("pitch");
 156         m_yaw = args.getFloat("yaw");
 157         m_position = args.getV3F("position");
 158         try{
 159                 craftresult_is_preview = args.getBool("craftresult_is_preview");
 160         }catch(SettingNotFoundException &e){
 161                 craftresult_is_preview = true;
 162         }
 163         try{
 164                 hp = args.getS32("hp");
 165         }catch(SettingNotFoundException &e){
 166                 hp = 20;
 167         }
 168         /*try{
 169                 std::string sprivs = args.get("privs");
 170                 if(sprivs == "all")
 171                 {
 172                         privs = PRIV_ALL;
 173                 }
 174                 else
 175                 {
 176                         std::istringstream ss(sprivs);
 177                         ss>>privs;
 178                 }
 179         }catch(SettingNotFoundException &e){
 180                 privs = PRIV_DEFAULT;
 181         }*/
 182
 183         inventory.deSerialize(is);
 184 }
 185
 186 /*
 187         RemotePlayer
 188 */
 189
 190 #ifndef SERVER
 191
 192 RemotePlayer::RemotePlayer(
 193                 scene::ISceneNode* parent,
 194                 IrrlichtDevice *device,
 195                 s32 id):
 196         scene::ISceneNode(parent, (device==NULL)?NULL:device->getSceneManager(), id),
 197         m_text(NULL)
 198 {
 199         m_box = core::aabbox3d<f32>(-BS/2,0,-BS/2,BS/2,BS*2,BS/2);
 200
 201         if(parent != NULL && device != NULL)
 202         {
 203                 // ISceneNode stores a member called SceneManager
 204                 scene::ISceneManager* mgr = SceneManager;
 205                 video::IVideoDriver* driver = mgr->getVideoDriver();
 206                 gui::IGUIEnvironment* gui = device->getGUIEnvironment();
 207
 208                 // Add a text node for showing the name
 209                 wchar_t wname[1] = {0};
 210                 m_text = mgr->addTextSceneNode(gui->getBuiltInFont(),
 211                                 wname, video::SColor(255,255,255,255), this);
 212                 m_text->setPosition(v3f(0, (f32)BS*2.1, 0));
 213
 214                 // Attach a simple mesh to the player for showing an image
 215                 scene::SMesh *mesh = new scene::SMesh();
 216                 { // Front
 217                 scene::IMeshBuffer *buf = new scene::SMeshBuffer();
 218                 video::SColor c(255,255,255,255);
 219                 video::S3DVertex vertices[4] =
 220                 {
 221                         video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
 222                         video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
 223                         video::S3DVertex(BS/2,BS*2,0, 0,0,0, c, 1,0),
 224                         video::S3DVertex(-BS/2,BS*2,0, 0,0,0, c, 0,0),
 225                 };
 226                 u16 indices[] = {0,1,2,2,3,0};
 227                 buf->append(vertices, 4, indices, 6);
 228                 // Set material
 229                 buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
 230                 //buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
 231                 buf->getMaterial().setTexture(0, driver->getTexture(getTexturePath("player.png").c_str()));
 232                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
 233                 buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
 234                 //buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 235                 buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 236                 // Add to mesh
 237                 mesh->addMeshBuffer(buf);
 238                 buf->drop();
 239                 }
 240                 { // Back
 241                 scene::IMeshBuffer *buf = new scene::SMeshBuffer();
 242                 video::SColor c(255,255,255,255);
 243                 video::S3DVertex vertices[4] =
 244                 {
 245                         video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
 246                         video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
 247                         video::S3DVertex(-BS/2,BS*2,0, 0,0,0, c, 0,0),
 248                         video::S3DVertex(BS/2,BS*2,0, 0,0,0, c, 1,0),
 249                 };
 250                 u16 indices[] = {0,1,2,2,3,0};
 251                 buf->append(vertices, 4, indices, 6);
 252                 // Set material
 253                 buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
 254                 //buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
 255                 buf->getMaterial().setTexture(0, driver->getTexture(getTexturePath("player_back.png").c_str()));
 256                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
 257                 buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
 258                 buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 259                 // Add to mesh
 260                 mesh->addMeshBuffer(buf);
 261                 buf->drop();
 262                 }
 263                 m_node = mgr->addMeshSceneNode(mesh, this);
 264                 mesh->drop();
 265                 m_node->setPosition(v3f(0,0,0));
 266         }
 267 }
 268
 269 RemotePlayer::~RemotePlayer()
 270 {
 271         if(SceneManager != NULL)
 272                 ISceneNode::remove();
 273 }
 274
 275 void RemotePlayer::updateName(const char *name)
 276 {
 277         Player::updateName(name);
 278         if(m_text != NULL)
 279         {
 280                 wchar_t wname[PLAYERNAME_SIZE];
 281                 mbstowcs(wname, m_name, strlen(m_name)+1);
 282                 m_text->setText(wname);
 283         }
 284 }
 285
 286 void RemotePlayer::move(f32 dtime, Map &map, f32 pos_max_d)
 287 {
 288         m_pos_animation_time_counter += dtime;
 289         m_pos_animation_counter += dtime;
 290         v3f movevector = m_position - m_oldpos;
 291         f32 moveratio;
 292         if(m_pos_animation_time < 0.001)
 293                 moveratio = 1.0;
 294         else
 295                 moveratio = m_pos_animation_counter / m_pos_animation_time;
 296         if(moveratio > 1.5)
 297                 moveratio = 1.5;
 298         m_showpos = m_oldpos + movevector * moveratio;
 299
 300         ISceneNode::setPosition(m_showpos);
 301 }
 302
 303 #endif
 304
 305 #ifndef SERVER
 306 /*
 307         LocalPlayer
 308 */
 309
 310 LocalPlayer::LocalPlayer():
 311         m_sneak_node(32767,32767,32767),
 312         m_sneak_node_exists(false)
 313 {
 314         // Initialize hp to 0, so that no hearts will be shown if server
 315         // doesn't support health points
 316         hp = 0;
 317 }
 318
 319 LocalPlayer::~LocalPlayer()
 320 {
 321 }
 322
 323 void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d,
 324                 core::list<CollisionInfo> *collision_info)
 325 {
 326         v3f position = getPosition();
 327         v3f oldpos = position;
 328         v3s16 oldpos_i = floatToInt(oldpos, BS);
 329
 330         v3f old_speed = m_speed;
 331
 332         /*std::cout<<"oldpos_i=("<<oldpos_i.X<<","<<oldpos_i.Y<<","
 333                         <<oldpos_i.Z<<")"<<std::endl;*/
 334
 335         /*
 336                 Calculate new position
 337         */
 338         if(is_frozen) {
 339                 // Still move very slowly so as not to feel all completely stuck
 340                 position += m_speed * dtime * 0.001;
 341         }
 342         else {
 343                 position += m_speed * dtime;
 344         }
 345
 346         /*
 347                 If the player enters an unloaded chunk this is set to true.
 348         */
 349         is_frozen = false;
 350
 351         // Skip collision detection if a special movement mode is used
 352         bool free_move = g_settings->getBool("free_move");
 353         if(free_move)
 354         {
 355                 setPosition(position);
 356                 return;
 357         }
 358
 359         /*
 360                 Collision detection
 361         */
 362
 363         // Player position in nodes
 364         v3s16 pos_i = floatToInt(position, BS);
 365
 366         /*
 367                 Check if player is in water (the oscillating value)
 368         */
 369         try{
 370                 // If in water, the threshold of coming out is at higher y
 371                 if(in_water)
 372                 {
 373                         v3s16 pp = floatToInt(position + v3f(0,BS*0.1,0), BS);
 374                         in_water = content_liquid(map.getNode(pp).getContent());
 375                 }
 376                 // If not in water, the threshold of going in is at lower y
 377                 else
 378                 {
 379                         v3s16 pp = floatToInt(position + v3f(0,BS*0.5,0), BS);
 380                         in_water = content_liquid(map.getNode(pp).getContent());
 381                 }
 382         }
 383         catch(InvalidPositionException &e)
 384         {
 385                 in_water = false;
 386         }
 387
 388         /*
 389                 Check if player is in water (the stable value)
 390         */
 391         try{
 392                 v3s16 pp = floatToInt(position + v3f(0,0,0), BS);
 393                 in_water_stable = content_liquid(map.getNode(pp).getContent());
 394         }
 395         catch(InvalidPositionException &e)
 396         {
 397                 in_water_stable = false;
 398         }
 399
 400         /*
 401                 Check if player is climbing
 402         */
 403
 404         try {
 405                 v3s16 pp = floatToInt(position + v3f(0,0.5*BS,0), BS);
 406                 v3s16 pp2 = floatToInt(position + v3f(0,-0.2*BS,0), BS);
 407                 is_climbing = ((content_features(map.getNode(pp).getContent()).climbable ||
 408                                 content_features(map.getNode(pp2).getContent()).climbable) && !free_move);
 409         }
 410         catch(InvalidPositionException &e)
 411         {
 412                 is_climbing = false;
 413         }
 414
 415         /*
 416                 Collision uncertainty radius
 417                 Make it a bit larger than the maximum distance of movement
 418         */
 419         //f32 d = pos_max_d * 1.1;
 420         // A fairly large value in here makes moving smoother
 421         f32 d = 0.15*BS;
 422
 423         // This should always apply, otherwise there are glitches
 424         assert(d > pos_max_d);
 425
 426         float player_radius = BS*0.35;
 427         float player_height = BS*1.7;
 428
 429         // Maximum distance over border for sneaking
 430         f32 sneak_max = BS*0.4;
 431
 432         /*
 433                 If sneaking, player has larger collision radius to keep from
 434                 falling
 435         */
 436         /*if(control.sneak)
 437                 player_radius = sneak_max + d*1.1;*/
 438
 439         /*
 440                 If sneaking, keep in range from the last walked node and don't
 441                 fall off from it
 442         */
 443         if(control.sneak && m_sneak_node_exists)
 444         {
 445                 f32 maxd = 0.5*BS + sneak_max;
 446                 v3f lwn_f = intToFloat(m_sneak_node, BS);
 447                 position.X = rangelim(position.X, lwn_f.X-maxd, lwn_f.X+maxd);
 448                 position.Z = rangelim(position.Z, lwn_f.Z-maxd, lwn_f.Z+maxd);
 449
 450                 f32 min_y = lwn_f.Y + 0.5*BS;
 451                 if(position.Y < min_y)
 452                 {
 453                         position.Y = min_y;
 454
 455                         //v3f old_speed = m_speed;
 456
 457                         if(m_speed.Y < 0)
 458                                 m_speed.Y = 0;
 459
 460                         /*if(collision_info)
 461                         {
 462                                 // Report fall collision
 463                                 if(old_speed.Y < m_speed.Y - 0.1)
 464                                 {
 465                                         CollisionInfo info;
 466                                         info.t = COLLISION_FALL;
 467                                         info.speed = m_speed.Y - old_speed.Y;
 468                                         collision_info->push_back(info);
 469                                 }
 470                         }*/
 471                 }
 472         }
 473
 474         /*
 475                 Calculate player collision box (new and old)
 476         */
 477         core::aabbox3d<f32> playerbox(
 478                 position.X - player_radius,
 479                 position.Y - 0.0,
 480                 position.Z - player_radius,
 481                 position.X + player_radius,
 482                 position.Y + player_height,
 483                 position.Z + player_radius
 484         );
 485         core::aabbox3d<f32> playerbox_old(
 486                 oldpos.X - player_radius,
 487                 oldpos.Y - 0.0,
 488                 oldpos.Z - player_radius,
 489                 oldpos.X + player_radius,
 490                 oldpos.Y + player_height,
 491                 oldpos.Z + player_radius
 492         );
 493
 494         /*
 495                 If the player's feet touch the topside of any node, this is
 496                 set to true.
 497
 498                 Player is allowed to jump when this is true.
 499         */
 500         touching_ground = false;
 501
 502         /*std::cout<<"Checking collisions for ("
 503                         <<oldpos_i.X<<","<<oldpos_i.Y<<","<<oldpos_i.Z
 504                         <<") -> ("
 505                         <<pos_i.X<<","<<pos_i.Y<<","<<pos_i.Z
 506                         <<"):"<<std::endl;*/
 507
 508         /*
 509                 Go through every node around the player
 510         */
 511         for(s16 y = oldpos_i.Y - 1; y <= oldpos_i.Y + 2; y++)
 512         for(s16 z = oldpos_i.Z - 1; z <= oldpos_i.Z + 1; z++)
 513         for(s16 x = oldpos_i.X - 1; x <= oldpos_i.X + 1; x++)
 514         {
 515                 try{
 516                         // Player collides into walkable nodes
 517                         if(content_walkable(map.getNode(v3s16(x,y,z)).getContent()) == false)
 518                                 continue;
 519                 }
 520                 catch(InvalidPositionException &e)
 521                 {
 522                         if(!is_frozen) {
 523                                 // freeze when entering unloaded areas
 524                                 is_frozen = true;
 525                         }
 526                         continue;
 527                 }
 528
 529                 core::aabbox3d<f32> nodebox = getNodeBox(v3s16(x,y,z), BS);
 530
 531                 /*
 532                         See if the player is touching ground.
 533
 534                         Player touches ground if player's minimum Y is near node's
 535                         maximum Y and player's X-Z-area overlaps with the node's
 536                         X-Z-area.
 537
 538                         Use 0.15*BS so that it is easier to get on a node.
 539                 */
 540                 if(
 541                                 //fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < d
 542                                 fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < 0.15*BS
 543                                 && nodebox.MaxEdge.X-d > playerbox.MinEdge.X
 544                                 && nodebox.MinEdge.X+d < playerbox.MaxEdge.X
 545                                 && nodebox.MaxEdge.Z-d > playerbox.MinEdge.Z
 546                                 && nodebox.MinEdge.Z+d < playerbox.MaxEdge.Z
 547                 ){
 548                         touching_ground = true;
 549                 }
 550
 551                 // If player doesn't intersect with node, ignore node.
 552                 if(playerbox.intersectsWithBox(nodebox) == false)
 553                         continue;
 554
 555                 /*
 556                         Go through every axis
 557                 */
 558                 v3f dirs[3] = {
 559                         v3f(0,0,1), // back-front
 560                         v3f(0,1,0), // top-bottom
 561                         v3f(1,0,0), // right-left
 562                 };
 563                 for(u16 i=0; i<3; i++)
 564                 {
 565                         /*
 566                                 Calculate values along the axis
 567                         */
 568                         f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[i]);
 569                         f32 nodemin = nodebox.MinEdge.dotProduct(dirs[i]);
 570                         f32 playermax = playerbox.MaxEdge.dotProduct(dirs[i]);
 571                         f32 playermin = playerbox.MinEdge.dotProduct(dirs[i]);
 572                         f32 playermax_old = playerbox_old.MaxEdge.dotProduct(dirs[i]);
 573                         f32 playermin_old = playerbox_old.MinEdge.dotProduct(dirs[i]);
 574
 575                         /*
 576                                 Check collision for the axis.
 577                                 Collision happens when player is going through a surface.
 578                         */
 579                         /*f32 neg_d = d;
 580                         f32 pos_d = d;
 581                         // Make it easier to get on top of a node
 582                         if(i == 1)
 583                                 neg_d = 0.15*BS;
 584                         bool negative_axis_collides =
 585                                 (nodemax > playermin && nodemax <= playermin_old + neg_d
 586                                         && m_speed.dotProduct(dirs[i]) < 0);
 587                         bool positive_axis_collides =
 588                                 (nodemin < playermax && nodemin >= playermax_old - pos_d
 589                                         && m_speed.dotProduct(dirs[i]) > 0);*/
 590                         bool negative_axis_collides =
 591                                 (nodemax > playermin && nodemax <= playermin_old + d
 592                                         && m_speed.dotProduct(dirs[i]) < 0);
 593                         bool positive_axis_collides =
 594                                 (nodemin < playermax && nodemin >= playermax_old - d
 595                                         && m_speed.dotProduct(dirs[i]) > 0);
 596                         bool main_axis_collides =
 597                                         negative_axis_collides || positive_axis_collides;
 598
 599                         /*
 600                                 Check overlap of player and node in other axes
 601                         */
 602                         bool other_axes_overlap = true;
 603                         for(u16 j=0; j<3; j++)
 604                         {
 605                                 if(j == i)
 606                                         continue;
 607                                 f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[j]);
 608                                 f32 nodemin = nodebox.MinEdge.dotProduct(dirs[j]);
 609                                 f32 playermax = playerbox.MaxEdge.dotProduct(dirs[j]);
 610                                 f32 playermin = playerbox.MinEdge.dotProduct(dirs[j]);
 611                                 if(!(nodemax - d > playermin && nodemin + d < playermax))
 612                                 {
 613                                         other_axes_overlap = false;
 614                                         break;
 615                                 }
 616                         }
 617
 618                         /*
 619                                 If this is a collision, revert the position in the main
 620                                 direction.
 621                         */
 622                         if(other_axes_overlap && main_axis_collides)
 623                         {
 624                                 //v3f old_speed = m_speed;
 625
 626                                 m_speed -= m_speed.dotProduct(dirs[i]) * dirs[i];
 627                                 position -= position.dotProduct(dirs[i]) * dirs[i];
 628                                 position += oldpos.dotProduct(dirs[i]) * dirs[i];
 629
 630                                 /*if(collision_info)
 631                                 {
 632                                         // Report fall collision
 633                                         if(old_speed.Y < m_speed.Y - 0.1)
 634                                         {
 635                                                 CollisionInfo info;
 636                                                 info.t = COLLISION_FALL;
 637                                                 info.speed = m_speed.Y - old_speed.Y;
 638                                                 collision_info->push_back(info);
 639                                         }
 640                                 }*/
 641                         }
 642
 643                 }
 644         } // xyz
 645
 646         /*
 647                 Check the nodes under the player to see from which node the
 648                 player is sneaking from, if any.
 649         */
 650         {
 651                 v3s16 pos_i_bottom = floatToInt(position - v3f(0,BS/2,0), BS);
 652                 v2f player_p2df(position.X, position.Z);
 653                 f32 min_distance_f = 100000.0*BS;
 654                 // If already seeking from some node, compare to it.
 655                 /*if(m_sneak_node_exists)
 656                 {
 657                         v3f sneaknode_pf = intToFloat(m_sneak_node, BS);
 658                         v2f sneaknode_p2df(sneaknode_pf.X, sneaknode_pf.Z);
 659                         f32 d_horiz_f = player_p2df.getDistanceFrom(sneaknode_p2df);
 660                         f32 d_vert_f = fabs(sneaknode_pf.Y + BS*0.5 - position.Y);
 661                         // Ignore if player is not on the same level (likely dropped)
 662                         if(d_vert_f < 0.15*BS)
 663                                 min_distance_f = d_horiz_f;
 664                 }*/
 665                 v3s16 new_sneak_node = m_sneak_node;
 666                 for(s16 x=-1; x<=1; x++)
 667                 for(s16 z=-1; z<=1; z++)
 668                 {
 669                         v3s16 p = pos_i_bottom + v3s16(x,0,z);
 670                         v3f pf = intToFloat(p, BS);
 671                         v2f node_p2df(pf.X, pf.Z);
 672                         f32 distance_f = player_p2df.getDistanceFrom(node_p2df);
 673                         f32 max_axis_distance_f = MYMAX(
 674                                         fabs(player_p2df.X-node_p2df.X),
 675                                         fabs(player_p2df.Y-node_p2df.Y));
 676
 677                         if(distance_f > min_distance_f ||
 678                                         max_axis_distance_f > 0.5*BS + sneak_max + 0.1*BS)
 679                                 continue;
 680
 681                         try{
 682                                 // The node to be sneaked on has to be walkable
 683                                 if(content_walkable(map.getNode(p).getContent()) == false)
 684                                         continue;
 685                                 // And the node above it has to be nonwalkable
 686                                 if(content_walkable(map.getNode(p+v3s16(0,1,0)).getContent()) == true)
 687                                         continue;
 688                         }
 689                         catch(InvalidPositionException &e)
 690                         {
 691                                 continue;
 692                         }
 693
 694                         min_distance_f = distance_f;
 695                         new_sneak_node = p;
 696                 }
 697
 698                 bool sneak_node_found = (min_distance_f < 100000.0*BS*0.9);
 699
 700                 if(control.sneak && m_sneak_node_exists)
 701                 {
 702                         if(sneak_node_found)
 703                                 m_sneak_node = new_sneak_node;
 704                 }
 705                 else
 706                 {
 707                         m_sneak_node = new_sneak_node;
 708                         m_sneak_node_exists = sneak_node_found;
 709                 }
 710
 711                 /*
 712                         If sneaking, the player's collision box can be in air, so
 713                         this has to be set explicitly
 714                 */
 715                 if(sneak_node_found && control.sneak)
 716                         touching_ground = true;
 717         }
 718
 719         /*
 720                 Set new position
 721         */
 722         setPosition(position);
 723
 724         /*
 725                 Report collisions
 726         */
 727         if(collision_info)
 728         {
 729                 // Report fall collision
 730                 if(old_speed.Y < m_speed.Y - 0.1)
 731                 {
 732                         CollisionInfo info;
 733                         info.t = COLLISION_FALL;
 734                         info.speed = m_speed.Y - old_speed.Y;
 735                         collision_info->push_back(info);
 736                 }
 737         }
 738 }
 739
 740 void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d)
 741 {
 742         move(dtime, map, pos_max_d, NULL);
 743 }
 744
 745 void LocalPlayer::applyControl(float dtime)
 746 {
 747         // Clear stuff
 748         swimming_up = false;
 749
 750         // Random constants
 751         f32 walk_acceleration = 4.0 * BS;
 752         f32 walkspeed_max = 4.0 * BS;
 753
 754         setPitch(control.pitch);
 755         setYaw(control.yaw);
 756
 757         v3f move_direction = v3f(0,0,1);
 758         move_direction.rotateXZBy(getYaw());
 759
 760         v3f speed = v3f(0,0,0);
 761
 762         bool free_move = g_settings->getBool("free_move");
 763         bool fast_move = g_settings->getBool("fast_move");
 764         bool continuous_forward = g_settings->getBool("continuous_forward");
 765
 766         if(free_move || is_climbing)
 767         {
 768                 v3f speed = getSpeed();
 769                 speed.Y = 0;
 770                 setSpeed(speed);
 771         }
 772
 773         // Whether superspeed mode is used or not
 774         bool superspeed = false;
 775
 776         // If free movement and fast movement, always move fast
 777         if(free_move && fast_move)
 778                 superspeed = true;
 779
 780         // Auxiliary button 1 (E)
 781         if(control.aux1)
 782         {
 783                 if(free_move)
 784                 {
 785                         // In free movement mode, aux1 descends
 786                         v3f speed = getSpeed();
 787                         if(fast_move)
 788                                 speed.Y = -20*BS;
 789                         else
 790                                 speed.Y = -walkspeed_max;
 791                         setSpeed(speed);
 792                 }
 793                 else if(is_climbing)
 794                 {
 795                         v3f speed = getSpeed();
 796                         speed.Y = -3*BS;
 797                         setSpeed(speed);
 798                 }
 799                 else
 800                 {
 801                         // If not free movement but fast is allowed, aux1 is
 802                         // "Turbo button"
 803                         if(fast_move)
 804                                 superspeed = true;
 805                 }
 806         }
 807
 808         if(continuous_forward)
 809                 speed += move_direction;
 810
 811         if(control.up)
 812         {
 813                 if(continuous_forward)
 814                         superspeed = true;
 815                 else
 816                         speed += move_direction;
 817         }
 818         if(control.down)
 819         {
 820                 speed -= move_direction;
 821         }
 822         if(control.left)
 823         {
 824                 speed += move_direction.crossProduct(v3f(0,1,0));
 825         }
 826         if(control.right)
 827         {
 828                 speed += move_direction.crossProduct(v3f(0,-1,0));
 829         }
 830         if(control.jump)
 831         {
 832                 if(free_move)
 833                 {
 834                         v3f speed = getSpeed();
 835                         if(fast_move)
 836                                 speed.Y = 20*BS;
 837                         else
 838                                 speed.Y = walkspeed_max;
 839                         setSpeed(speed);
 840                 }
 841                 else if(touching_ground)
 842                 {
 843                         v3f speed = getSpeed();
 844                         /*
 845                                 NOTE: The d value in move() affects jump height by
 846                                 raising the height at which the jump speed is kept
 847                                 at its starting value
 848                         */
 849                         speed.Y = 6.5*BS;
 850                         setSpeed(speed);
 851                 }
 852                 // Use the oscillating value for getting out of water
 853                 // (so that the player doesn't fly on the surface)
 854                 else if(in_water)
 855                 {
 856                         v3f speed = getSpeed();
 857                         speed.Y = 1.5*BS;
 858                         setSpeed(speed);
 859                         swimming_up = true;
 860                 }
 861                 else if(is_climbing)
 862                 {
 863                         v3f speed = getSpeed();
 864                         speed.Y = 3*BS;
 865                         setSpeed(speed);
 866                 }
 867         }
 868
 869         // The speed of the player (Y is ignored)
 870         if(superspeed)
 871                 speed = speed.normalize() * walkspeed_max * 5.0;
 872         else if(control.sneak)
 873                 speed = speed.normalize() * walkspeed_max / 3.0;
 874         else
 875                 speed = speed.normalize() * walkspeed_max;
 876
 877         f32 inc = walk_acceleration * BS * dtime;
 878
 879         // Faster acceleration if fast and free movement
 880         if(free_move && fast_move)
 881                 inc = walk_acceleration * BS * dtime * 10;
 882
 883         // Accelerate to target speed with maximum increment
 884         accelerate(speed, inc);
 885 }
 886 #endif
 887