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 #include "mapnode_contentfeatures.h"
  30
  31 Player::Player():
  32         touching_ground(false),
  33         in_water(false),
  34         in_water_stable(false),
  35         is_climbing(false),
  36         swimming_up(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"); // Version field value not used
 149         std::string name = args.get("name");
 150         updateName(name.c_str());
 151         setPitch(args.getFloat("pitch"));
 152         setYaw(args.getFloat("yaw"));
 153         setPosition(args.getV3F("position"));
 154         try{
 155                 craftresult_is_preview = args.getBool("craftresult_is_preview");
 156         }catch(SettingNotFoundException &e){
 157                 craftresult_is_preview = true;
 158         }
 159         try{
 160                 hp = args.getS32("hp");
 161         }catch(SettingNotFoundException &e){
 162                 hp = 20;
 163         }
 164
 165         inventory.deSerialize(is);
 166 }
 167
 168 /*
 169         ServerRemotePlayer
 170 */
 171
 172 /* ServerActiveObject interface */
 173
 174 InventoryItem* ServerRemotePlayer::getWieldedItem()
 175 {
 176         InventoryList *list = inventory.getList("main");
 177         if (list)
 178                 return list->getItem(m_selected_item);
 179         return NULL;
 180 }
 181 void ServerRemotePlayer::damageWieldedItem(u16 amount)
 182 {
 183         infostream<<"Damaging "<<getName()<<"'s wielded item for amount="
 184                         <<amount<<std::endl;
 185         InventoryList *list = inventory.getList("main");
 186         if(!list)
 187                 return;
 188         InventoryItem *item = list->getItem(m_selected_item);
 189         if(item && (std::string)item->getName() == "ToolItem"){
 190                 ToolItem *titem = (ToolItem*)item;
 191                 bool weared_out = titem->addWear(amount);
 192                 if(weared_out)
 193                         list->deleteItem(m_selected_item);
 194         }
 195 }
 196 bool ServerRemotePlayer::addToInventory(InventoryItem *item)
 197 {
 198         infostream<<"Adding "<<item->getName()<<" into "<<getName()
 199                         <<"'s inventory"<<std::endl;
 200
 201         InventoryList *ilist = inventory.getList("main");
 202         if(ilist == NULL)
 203                 return false;
 204
 205         // In creative mode, just delete the item
 206         if(g_settings->getBool("creative_mode")){
 207                 return false;
 208         }
 209
 210         // Skip if inventory has no free space
 211         if(ilist->roomForItem(item) == false)
 212         {
 213                 infostream<<"Player inventory has no free space"<<std::endl;
 214                 return false;
 215         }
 216
 217         // Add to inventory
 218         InventoryItem *leftover = ilist->addItem(item);
 219         assert(!leftover);
 220
 221         return true;
 222 }
 223 void ServerRemotePlayer::setHP(s16 hp_)
 224 {
 225         hp = hp_;
 226 }
 227 s16 ServerRemotePlayer::getHP()
 228 {
 229         return hp;
 230 }
 231
 232 /*
 233         RemotePlayer
 234 */
 235
 236 #ifndef SERVER
 237
 238 RemotePlayer::RemotePlayer(
 239                 scene::ISceneNode* parent,
 240                 IrrlichtDevice *device,
 241                 s32 id):
 242         scene::ISceneNode(parent, (device==NULL)?NULL:device->getSceneManager(), id),
 243         m_text(NULL)
 244 {
 245         m_box = core::aabbox3d<f32>(-BS/2,0,-BS/2,BS/2,BS*2,BS/2);
 246
 247         if(parent != NULL && device != NULL)
 248         {
 249                 // ISceneNode stores a member called SceneManager
 250                 scene::ISceneManager* mgr = SceneManager;
 251                 video::IVideoDriver* driver = mgr->getVideoDriver();
 252                 gui::IGUIEnvironment* gui = device->getGUIEnvironment();
 253
 254                 // Add a text node for showing the name
 255                 wchar_t wname[1] = {0};
 256                 m_text = mgr->addTextSceneNode(gui->getBuiltInFont(),
 257                                 wname, video::SColor(255,255,255,255), this);
 258                 m_text->setPosition(v3f(0, (f32)BS*2.1, 0));
 259
 260                 // Attach a simple mesh to the player for showing an image
 261                 scene::SMesh *mesh = new scene::SMesh();
 262                 { // Front
 263                 scene::IMeshBuffer *buf = new scene::SMeshBuffer();
 264                 video::SColor c(255,255,255,255);
 265                 video::S3DVertex vertices[4] =
 266                 {
 267                         video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
 268                         video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
 269                         video::S3DVertex(BS/2,BS*2,0, 0,0,0, c, 1,0),
 270                         video::S3DVertex(-BS/2,BS*2,0, 0,0,0, c, 0,0),
 271                 };
 272                 u16 indices[] = {0,1,2,2,3,0};
 273                 buf->append(vertices, 4, indices, 6);
 274                 // Set material
 275                 buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
 276                 //buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
 277                 buf->getMaterial().setTexture(0, driver->getTexture(getTexturePath("player.png").c_str()));
 278                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
 279                 buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
 280                 //buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 281                 buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 282                 // Add to mesh
 283                 mesh->addMeshBuffer(buf);
 284                 buf->drop();
 285                 }
 286                 { // Back
 287                 scene::IMeshBuffer *buf = new scene::SMeshBuffer();
 288                 video::SColor c(255,255,255,255);
 289                 video::S3DVertex vertices[4] =
 290                 {
 291                         video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
 292                         video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
 293                         video::S3DVertex(-BS/2,BS*2,0, 0,0,0, c, 0,0),
 294                         video::S3DVertex(BS/2,BS*2,0, 0,0,0, c, 1,0),
 295                 };
 296                 u16 indices[] = {0,1,2,2,3,0};
 297                 buf->append(vertices, 4, indices, 6);
 298                 // Set material
 299                 buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
 300                 //buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
 301                 buf->getMaterial().setTexture(0, driver->getTexture(getTexturePath("player_back.png").c_str()));
 302                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
 303                 buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
 304                 buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 305                 // Add to mesh
 306                 mesh->addMeshBuffer(buf);
 307                 buf->drop();
 308                 }
 309                 m_node = mgr->addMeshSceneNode(mesh, this);
 310                 mesh->drop();
 311                 m_node->setPosition(v3f(0,0,0));
 312         }
 313 }
 314
 315 RemotePlayer::~RemotePlayer()
 316 {
 317         if(SceneManager != NULL)
 318                 ISceneNode::remove();
 319 }
 320
 321 void RemotePlayer::updateName(const char *name)
 322 {
 323         Player::updateName(name);
 324         if(m_text != NULL)
 325         {
 326                 wchar_t wname[PLAYERNAME_SIZE];
 327                 mbstowcs(wname, m_name, strlen(m_name)+1);
 328                 m_text->setText(wname);
 329         }
 330 }
 331
 332 void RemotePlayer::move(f32 dtime, Map &map, f32 pos_max_d)
 333 {
 334         m_pos_animation_time_counter += dtime;
 335         m_pos_animation_counter += dtime;
 336         v3f movevector = m_position - m_oldpos;
 337         f32 moveratio;
 338         if(m_pos_animation_time < 0.001)
 339                 moveratio = 1.0;
 340         else
 341                 moveratio = m_pos_animation_counter / m_pos_animation_time;
 342         if(moveratio > 1.5)
 343                 moveratio = 1.5;
 344         m_showpos = m_oldpos + movevector * moveratio;
 345
 346         ISceneNode::setPosition(m_showpos);
 347 }
 348
 349 #endif
 350
 351 #ifndef SERVER
 352 /*
 353         LocalPlayer
 354 */
 355
 356 LocalPlayer::LocalPlayer():
 357         m_sneak_node(32767,32767,32767),
 358         m_sneak_node_exists(false)
 359 {
 360         // Initialize hp to 0, so that no hearts will be shown if server
 361         // doesn't support health points
 362         hp = 0;
 363 }
 364
 365 LocalPlayer::~LocalPlayer()
 366 {
 367 }
 368
 369 void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d,
 370                 core::list<CollisionInfo> *collision_info)
 371 {
 372         v3f position = getPosition();
 373         v3f oldpos = position;
 374         v3s16 oldpos_i = floatToInt(oldpos, BS);
 375
 376         v3f old_speed = m_speed;
 377
 378         /*std::cout<<"oldpos_i=("<<oldpos_i.X<<","<<oldpos_i.Y<<","
 379                         <<oldpos_i.Z<<")"<<std::endl;*/
 380
 381         /*
 382                 Calculate new position
 383         */
 384         position += m_speed * dtime;
 385
 386         // Skip collision detection if a special movement mode is used
 387         bool free_move = g_settings->getBool("free_move");
 388         if(free_move)
 389         {
 390                 setPosition(position);
 391                 return;
 392         }
 393
 394         /*
 395                 Collision detection
 396         */
 397
 398         // Player position in nodes
 399         v3s16 pos_i = floatToInt(position, BS);
 400
 401         /*
 402                 Check if player is in water (the oscillating value)
 403         */
 404         try{
 405                 // If in water, the threshold of coming out is at higher y
 406                 if(in_water)
 407                 {
 408                         v3s16 pp = floatToInt(position + v3f(0,BS*0.1,0), BS);
 409                         in_water = content_liquid(map.getNode(pp).getContent());
 410                 }
 411                 // If not in water, the threshold of going in is at lower y
 412                 else
 413                 {
 414                         v3s16 pp = floatToInt(position + v3f(0,BS*0.5,0), BS);
 415                         in_water = content_liquid(map.getNode(pp).getContent());
 416                 }
 417         }
 418         catch(InvalidPositionException &e)
 419         {
 420                 in_water = false;
 421         }
 422
 423         /*
 424                 Check if player is in water (the stable value)
 425         */
 426         try{
 427                 v3s16 pp = floatToInt(position + v3f(0,0,0), BS);
 428                 in_water_stable = content_liquid(map.getNode(pp).getContent());
 429         }
 430         catch(InvalidPositionException &e)
 431         {
 432                 in_water_stable = false;
 433         }
 434
 435         /*
 436                 Check if player is climbing
 437         */
 438
 439         try {
 440                 v3s16 pp = floatToInt(position + v3f(0,0.5*BS,0), BS);
 441                 v3s16 pp2 = floatToInt(position + v3f(0,-0.2*BS,0), BS);
 442                 is_climbing = ((content_features(map.getNode(pp).getContent()).climbable ||
 443                                 content_features(map.getNode(pp2).getContent()).climbable) && !free_move);
 444         }
 445         catch(InvalidPositionException &e)
 446         {
 447                 is_climbing = false;
 448         }
 449
 450         /*
 451                 Collision uncertainty radius
 452                 Make it a bit larger than the maximum distance of movement
 453         */
 454         //f32 d = pos_max_d * 1.1;
 455         // A fairly large value in here makes moving smoother
 456         f32 d = 0.15*BS;
 457
 458         // This should always apply, otherwise there are glitches
 459         assert(d > pos_max_d);
 460
 461         float player_radius = BS*0.35;
 462         float player_height = BS*1.7;
 463
 464         // Maximum distance over border for sneaking
 465         f32 sneak_max = BS*0.4;
 466
 467         /*
 468                 If sneaking, player has larger collision radius to keep from
 469                 falling
 470         */
 471         /*if(control.sneak)
 472                 player_radius = sneak_max + d*1.1;*/
 473
 474         /*
 475                 If sneaking, keep in range from the last walked node and don't
 476                 fall off from it
 477         */
 478         if(control.sneak && m_sneak_node_exists)
 479         {
 480                 f32 maxd = 0.5*BS + sneak_max;
 481                 v3f lwn_f = intToFloat(m_sneak_node, BS);
 482                 position.X = rangelim(position.X, lwn_f.X-maxd, lwn_f.X+maxd);
 483                 position.Z = rangelim(position.Z, lwn_f.Z-maxd, lwn_f.Z+maxd);
 484
 485                 f32 min_y = lwn_f.Y + 0.5*BS;
 486                 if(position.Y < min_y)
 487                 {
 488                         position.Y = min_y;
 489
 490                         //v3f old_speed = m_speed;
 491
 492                         if(m_speed.Y < 0)
 493                                 m_speed.Y = 0;
 494
 495                         /*if(collision_info)
 496                         {
 497                                 // Report fall collision
 498                                 if(old_speed.Y < m_speed.Y - 0.1)
 499                                 {
 500                                         CollisionInfo info;
 501                                         info.t = COLLISION_FALL;
 502                                         info.speed = m_speed.Y - old_speed.Y;
 503                                         collision_info->push_back(info);
 504                                 }
 505                         }*/
 506                 }
 507         }
 508
 509         /*
 510                 Calculate player collision box (new and old)
 511         */
 512         core::aabbox3d<f32> playerbox(
 513                 position.X - player_radius,
 514                 position.Y - 0.0,
 515                 position.Z - player_radius,
 516                 position.X + player_radius,
 517                 position.Y + player_height,
 518                 position.Z + player_radius
 519         );
 520         core::aabbox3d<f32> playerbox_old(
 521                 oldpos.X - player_radius,
 522                 oldpos.Y - 0.0,
 523                 oldpos.Z - player_radius,
 524                 oldpos.X + player_radius,
 525                 oldpos.Y + player_height,
 526                 oldpos.Z + player_radius
 527         );
 528
 529         /*
 530                 If the player's feet touch the topside of any node, this is
 531                 set to true.
 532
 533                 Player is allowed to jump when this is true.
 534         */
 535         touching_ground = false;
 536
 537         /*std::cout<<"Checking collisions for ("
 538                         <<oldpos_i.X<<","<<oldpos_i.Y<<","<<oldpos_i.Z
 539                         <<") -> ("
 540                         <<pos_i.X<<","<<pos_i.Y<<","<<pos_i.Z
 541                         <<"):"<<std::endl;*/
 542
 543         bool standing_on_unloaded = false;
 544
 545         /*
 546                 Go through every node around the player
 547         */
 548         for(s16 y = oldpos_i.Y - 1; y <= oldpos_i.Y + 2; y++)
 549         for(s16 z = oldpos_i.Z - 1; z <= oldpos_i.Z + 1; z++)
 550         for(s16 x = oldpos_i.X - 1; x <= oldpos_i.X + 1; x++)
 551         {
 552                 bool is_unloaded = false;
 553                 try{
 554                         // Player collides into walkable nodes
 555                         if(content_walkable(map.getNode(v3s16(x,y,z)).getContent()) == false)
 556                                 continue;
 557                 }
 558                 catch(InvalidPositionException &e)
 559                 {
 560                         is_unloaded = true;
 561                         // Doing nothing here will block the player from
 562                         // walking over map borders
 563                 }
 564
 565                 core::aabbox3d<f32> nodebox = getNodeBox(v3s16(x,y,z), BS);
 566
 567                 /*
 568                         See if the player is touching ground.
 569
 570                         Player touches ground if player's minimum Y is near node's
 571                         maximum Y and player's X-Z-area overlaps with the node's
 572                         X-Z-area.
 573
 574                         Use 0.15*BS so that it is easier to get on a node.
 575                 */
 576                 if(
 577                                 //fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < d
 578                                 fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < 0.15*BS
 579                                 && nodebox.MaxEdge.X-d > playerbox.MinEdge.X
 580                                 && nodebox.MinEdge.X+d < playerbox.MaxEdge.X
 581                                 && nodebox.MaxEdge.Z-d > playerbox.MinEdge.Z
 582                                 && nodebox.MinEdge.Z+d < playerbox.MaxEdge.Z
 583                 ){
 584                         touching_ground = true;
 585                         if(is_unloaded)
 586                                 standing_on_unloaded = true;
 587                 }
 588
 589                 // If player doesn't intersect with node, ignore node.
 590                 if(playerbox.intersectsWithBox(nodebox) == false)
 591                         continue;
 592
 593                 /*
 594                         Go through every axis
 595                 */
 596                 v3f dirs[3] = {
 597                         v3f(0,0,1), // back-front
 598                         v3f(0,1,0), // top-bottom
 599                         v3f(1,0,0), // right-left
 600                 };
 601                 for(u16 i=0; i<3; i++)
 602                 {
 603                         /*
 604                                 Calculate values along the axis
 605                         */
 606                         f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[i]);
 607                         f32 nodemin = nodebox.MinEdge.dotProduct(dirs[i]);
 608                         f32 playermax = playerbox.MaxEdge.dotProduct(dirs[i]);
 609                         f32 playermin = playerbox.MinEdge.dotProduct(dirs[i]);
 610                         f32 playermax_old = playerbox_old.MaxEdge.dotProduct(dirs[i]);
 611                         f32 playermin_old = playerbox_old.MinEdge.dotProduct(dirs[i]);
 612
 613                         /*
 614                                 Check collision for the axis.
 615                                 Collision happens when player is going through a surface.
 616                         */
 617                         /*f32 neg_d = d;
 618                         f32 pos_d = d;
 619                         // Make it easier to get on top of a node
 620                         if(i == 1)
 621                                 neg_d = 0.15*BS;
 622                         bool negative_axis_collides =
 623                                 (nodemax > playermin && nodemax <= playermin_old + neg_d
 624                                         && m_speed.dotProduct(dirs[i]) < 0);
 625                         bool positive_axis_collides =
 626                                 (nodemin < playermax && nodemin >= playermax_old - pos_d
 627                                         && m_speed.dotProduct(dirs[i]) > 0);*/
 628                         bool negative_axis_collides =
 629                                 (nodemax > playermin && nodemax <= playermin_old + d
 630                                         && m_speed.dotProduct(dirs[i]) < 0);
 631                         bool positive_axis_collides =
 632                                 (nodemin < playermax && nodemin >= playermax_old - d
 633                                         && m_speed.dotProduct(dirs[i]) > 0);
 634                         bool main_axis_collides =
 635                                         negative_axis_collides || positive_axis_collides;
 636
 637                         /*
 638                                 Check overlap of player and node in other axes
 639                         */
 640                         bool other_axes_overlap = true;
 641                         for(u16 j=0; j<3; j++)
 642                         {
 643                                 if(j == i)
 644                                         continue;
 645                                 f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[j]);
 646                                 f32 nodemin = nodebox.MinEdge.dotProduct(dirs[j]);
 647                                 f32 playermax = playerbox.MaxEdge.dotProduct(dirs[j]);
 648                                 f32 playermin = playerbox.MinEdge.dotProduct(dirs[j]);
 649                                 if(!(nodemax - d > playermin && nodemin + d < playermax))
 650                                 {
 651                                         other_axes_overlap = false;
 652                                         break;
 653                                 }
 654                         }
 655
 656                         /*
 657                                 If this is a collision, revert the position in the main
 658                                 direction.
 659                         */
 660                         if(other_axes_overlap && main_axis_collides)
 661                         {
 662                                 //v3f old_speed = m_speed;
 663
 664                                 m_speed -= m_speed.dotProduct(dirs[i]) * dirs[i];
 665                                 position -= position.dotProduct(dirs[i]) * dirs[i];
 666                                 position += oldpos.dotProduct(dirs[i]) * dirs[i];
 667
 668                                 /*if(collision_info)
 669                                 {
 670                                         // Report fall collision
 671                                         if(old_speed.Y < m_speed.Y - 0.1)
 672                                         {
 673                                                 CollisionInfo info;
 674                                                 info.t = COLLISION_FALL;
 675                                                 info.speed = m_speed.Y - old_speed.Y;
 676                                                 collision_info->push_back(info);
 677                                         }
 678                                 }*/
 679                         }
 680
 681                 }
 682         } // xyz
 683
 684         /*
 685                 Check the nodes under the player to see from which node the
 686                 player is sneaking from, if any.
 687         */
 688         {
 689                 v3s16 pos_i_bottom = floatToInt(position - v3f(0,BS/2,0), BS);
 690                 v2f player_p2df(position.X, position.Z);
 691                 f32 min_distance_f = 100000.0*BS;
 692                 // If already seeking from some node, compare to it.
 693                 /*if(m_sneak_node_exists)
 694                 {
 695                         v3f sneaknode_pf = intToFloat(m_sneak_node, BS);
 696                         v2f sneaknode_p2df(sneaknode_pf.X, sneaknode_pf.Z);
 697                         f32 d_horiz_f = player_p2df.getDistanceFrom(sneaknode_p2df);
 698                         f32 d_vert_f = fabs(sneaknode_pf.Y + BS*0.5 - position.Y);
 699                         // Ignore if player is not on the same level (likely dropped)
 700                         if(d_vert_f < 0.15*BS)
 701                                 min_distance_f = d_horiz_f;
 702                 }*/
 703                 v3s16 new_sneak_node = m_sneak_node;
 704                 for(s16 x=-1; x<=1; x++)
 705                 for(s16 z=-1; z<=1; z++)
 706                 {
 707                         v3s16 p = pos_i_bottom + v3s16(x,0,z);
 708                         v3f pf = intToFloat(p, BS);
 709                         v2f node_p2df(pf.X, pf.Z);
 710                         f32 distance_f = player_p2df.getDistanceFrom(node_p2df);
 711                         f32 max_axis_distance_f = MYMAX(
 712                                         fabs(player_p2df.X-node_p2df.X),
 713                                         fabs(player_p2df.Y-node_p2df.Y));
 714
 715                         if(distance_f > min_distance_f ||
 716                                         max_axis_distance_f > 0.5*BS + sneak_max + 0.1*BS)
 717                                 continue;
 718
 719                         try{
 720                                 // The node to be sneaked on has to be walkable
 721                                 if(content_walkable(map.getNode(p).getContent()) == false)
 722                                         continue;
 723                                 // And the node above it has to be nonwalkable
 724                                 if(content_walkable(map.getNode(p+v3s16(0,1,0)).getContent()) == true)
 725                                         continue;
 726                         }
 727                         catch(InvalidPositionException &e)
 728                         {
 729                                 continue;
 730                         }
 731
 732                         min_distance_f = distance_f;
 733                         new_sneak_node = p;
 734                 }
 735
 736                 bool sneak_node_found = (min_distance_f < 100000.0*BS*0.9);
 737
 738                 if(control.sneak && m_sneak_node_exists)
 739                 {
 740                         if(sneak_node_found)
 741                                 m_sneak_node = new_sneak_node;
 742                 }
 743                 else
 744                 {
 745                         m_sneak_node = new_sneak_node;
 746                         m_sneak_node_exists = sneak_node_found;
 747                 }
 748
 749                 /*
 750                         If sneaking, the player's collision box can be in air, so
 751                         this has to be set explicitly
 752                 */
 753                 if(sneak_node_found && control.sneak)
 754                         touching_ground = true;
 755         }
 756
 757         /*
 758                 Set new position
 759         */
 760         setPosition(position);
 761
 762         /*
 763                 Report collisions
 764         */
 765         if(collision_info)
 766         {
 767                 // Report fall collision
 768                 if(old_speed.Y < m_speed.Y - 0.1 && !standing_on_unloaded)
 769                 {
 770                         CollisionInfo info;
 771                         info.t = COLLISION_FALL;
 772                         info.speed = m_speed.Y - old_speed.Y;
 773                         collision_info->push_back(info);
 774                 }
 775         }
 776 }
 777
 778 void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d)
 779 {
 780         move(dtime, map, pos_max_d, NULL);
 781 }
 782
 783 void LocalPlayer::applyControl(float dtime)
 784 {
 785         // Clear stuff
 786         swimming_up = false;
 787
 788         // Random constants
 789         f32 walk_acceleration = 4.0 * BS;
 790         f32 walkspeed_max = 4.0 * BS;
 791
 792         setPitch(control.pitch);
 793         setYaw(control.yaw);
 794
 795         v3f move_direction = v3f(0,0,1);
 796         move_direction.rotateXZBy(getYaw());
 797
 798         v3f speed = v3f(0,0,0);
 799
 800         bool free_move = g_settings->getBool("free_move");
 801         bool fast_move = g_settings->getBool("fast_move");
 802         bool continuous_forward = g_settings->getBool("continuous_forward");
 803
 804         if(free_move || is_climbing)
 805         {
 806                 v3f speed = getSpeed();
 807                 speed.Y = 0;
 808                 setSpeed(speed);
 809         }
 810
 811         // Whether superspeed mode is used or not
 812         bool superspeed = false;
 813
 814         // If free movement and fast movement, always move fast
 815         if(free_move && fast_move)
 816                 superspeed = true;
 817
 818         // Auxiliary button 1 (E)
 819         if(control.aux1)
 820         {
 821                 if(free_move)
 822                 {
 823                         // In free movement mode, aux1 descends
 824                         v3f speed = getSpeed();
 825                         if(fast_move)
 826                                 speed.Y = -20*BS;
 827                         else
 828                                 speed.Y = -walkspeed_max;
 829                         setSpeed(speed);
 830                 }
 831                 else if(is_climbing)
 832                 {
 833                         v3f speed = getSpeed();
 834                         speed.Y = -3*BS;
 835                         setSpeed(speed);
 836                 }
 837                 else
 838                 {
 839                         // If not free movement but fast is allowed, aux1 is
 840                         // "Turbo button"
 841                         if(fast_move)
 842                                 superspeed = true;
 843                 }
 844         }
 845
 846         if(continuous_forward)
 847                 speed += move_direction;
 848
 849         if(control.up)
 850         {
 851                 if(continuous_forward)
 852                         superspeed = true;
 853                 else
 854                         speed += move_direction;
 855         }
 856         if(control.down)
 857         {
 858                 speed -= move_direction;
 859         }
 860         if(control.left)
 861         {
 862                 speed += move_direction.crossProduct(v3f(0,1,0));
 863         }
 864         if(control.right)
 865         {
 866                 speed += move_direction.crossProduct(v3f(0,-1,0));
 867         }
 868         if(control.jump)
 869         {
 870                 if(free_move)
 871                 {
 872                         v3f speed = getSpeed();
 873                         if(fast_move)
 874                                 speed.Y = 20*BS;
 875                         else
 876                                 speed.Y = walkspeed_max;
 877                         setSpeed(speed);
 878                 }
 879                 else if(touching_ground)
 880                 {
 881                         v3f speed = getSpeed();
 882                         /*
 883                                 NOTE: The d value in move() affects jump height by
 884                                 raising the height at which the jump speed is kept
 885                                 at its starting value
 886                         */
 887                         speed.Y = 6.5*BS;
 888                         setSpeed(speed);
 889                 }
 890                 // Use the oscillating value for getting out of water
 891                 // (so that the player doesn't fly on the surface)
 892                 else if(in_water)
 893                 {
 894                         v3f speed = getSpeed();
 895                         speed.Y = 1.5*BS;
 896                         setSpeed(speed);
 897                         swimming_up = true;
 898                 }
 899                 else if(is_climbing)
 900                 {
 901                         v3f speed = getSpeed();
 902                         speed.Y = 3*BS;
 903                         setSpeed(speed);
 904                 }
 905         }
 906
 907         // The speed of the player (Y is ignored)
 908         if(superspeed)
 909                 speed = speed.normalize() * walkspeed_max * 5.0;
 910         else if(control.sneak)
 911                 speed = speed.normalize() * walkspeed_max / 3.0;
 912         else
 913                 speed = speed.normalize() * walkspeed_max;
 914
 915         f32 inc = walk_acceleration * BS * dtime;
 916
 917         // Faster acceleration if fast and free movement
 918         if(free_move && fast_move)
 919                 inc = walk_acceleration * BS * dtime * 10;
 920
 921         // Accelerate to target speed with maximum increment
 922         accelerate(speed, inc);
 923 }
 924 #endif
 925