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 "main.h" // For g_settings
  29 #include "settings.h"
  30 #include "nodedef.h"
  31 #include "environment.h"
  32 #include "gamedef.h"
  33
  34 Player::Player(IGameDef *gamedef):
  35         touching_ground(false),
  36         in_water(false),
  37         in_water_stable(false),
  38         is_climbing(false),
  39         swimming_up(false),
  40         inventory_backup(NULL),
  41         craftresult_is_preview(true),
  42         hp(20),
  43         peer_id(PEER_ID_INEXISTENT),
  44 // protected
  45         m_gamedef(gamedef),
  46         m_selected_item(0),
  47         m_pitch(0),
  48         m_yaw(0),
  49         m_speed(0,0,0),
  50         m_position(0,0,0)
  51 {
  52         updateName("<not set>");
  53         resetInventory();
  54 }
  55
  56 Player::~Player()
  57 {
  58         delete inventory_backup;
  59 }
  60
  61 void Player::wieldItem(u16 item)
  62 {
  63         m_selected_item = item;
  64 }
  65
  66 void Player::resetInventory()
  67 {
  68         inventory.clear();
  69         inventory.addList("main", PLAYER_INVENTORY_SIZE);
  70         inventory.addList("craft", 9);
  71         inventory.addList("craftresult", 1);
  72 }
  73
  74 // Y direction is ignored
  75 void Player::accelerate(v3f target_speed, f32 max_increase)
  76 {
  77         v3f d_wanted = target_speed - m_speed;
  78         d_wanted.Y = 0;
  79         f32 dl_wanted = d_wanted.getLength();
  80         f32 dl = dl_wanted;
  81         if(dl > max_increase)
  82                 dl = max_increase;
  83
  84         v3f d = d_wanted.normalize() * dl;
  85
  86         m_speed.X += d.X;
  87         m_speed.Z += d.Z;
  88         //m_speed += d;
  89
  90 #if 0 // old code
  91         if(m_speed.X < target_speed.X - max_increase)
  92                 m_speed.X += max_increase;
  93         else if(m_speed.X > target_speed.X + max_increase)
  94                 m_speed.X -= max_increase;
  95         else if(m_speed.X < target_speed.X)
  96                 m_speed.X = target_speed.X;
  97         else if(m_speed.X > target_speed.X)
  98                 m_speed.X = target_speed.X;
  99
 100         if(m_speed.Z < target_speed.Z - max_increase)
 101                 m_speed.Z += max_increase;
 102         else if(m_speed.Z > target_speed.Z + max_increase)
 103                 m_speed.Z -= max_increase;
 104         else if(m_speed.Z < target_speed.Z)
 105                 m_speed.Z = target_speed.Z;
 106         else if(m_speed.Z > target_speed.Z)
 107                 m_speed.Z = target_speed.Z;
 108 #endif
 109 }
 110
 111 void Player::serialize(std::ostream &os)
 112 {
 113         // Utilize a Settings object for storing values
 114         Settings args;
 115         args.setS32("version", 1);
 116         args.set("name", m_name);
 117         //args.set("password", m_password);
 118         args.setFloat("pitch", m_pitch);
 119         args.setFloat("yaw", m_yaw);
 120         args.setV3F("position", m_position);
 121         args.setBool("craftresult_is_preview", craftresult_is_preview);
 122         args.setS32("hp", hp);
 123
 124         args.writeLines(os);
 125
 126         os<<"PlayerArgsEnd\n";
 127
 128         // If actual inventory is backed up due to creative mode, save it
 129         // instead of the dummy creative mode inventory
 130         if(inventory_backup)
 131                 inventory_backup->serialize(os);
 132         else
 133                 inventory.serialize(os);
 134 }
 135
 136 void Player::deSerialize(std::istream &is)
 137 {
 138         Settings args;
 139
 140         for(;;)
 141         {
 142                 if(is.eof())
 143                         throw SerializationError
 144                                         ("Player::deSerialize(): PlayerArgsEnd not found");
 145                 std::string line;
 146                 std::getline(is, line);
 147                 std::string trimmedline = trim(line);
 148                 if(trimmedline == "PlayerArgsEnd")
 149                         break;
 150                 args.parseConfigLine(line);
 151         }
 152
 153         //args.getS32("version"); // Version field value not used
 154         std::string name = args.get("name");
 155         updateName(name.c_str());
 156         setPitch(args.getFloat("pitch"));
 157         setYaw(args.getFloat("yaw"));
 158         setPosition(args.getV3F("position"));
 159         try{
 160                 craftresult_is_preview = args.getBool("craftresult_is_preview");
 161         }catch(SettingNotFoundException &e){
 162                 craftresult_is_preview = true;
 163         }
 164         try{
 165                 hp = args.getS32("hp");
 166         }catch(SettingNotFoundException &e){
 167                 hp = 20;
 168         }
 169
 170         inventory.deSerialize(is, m_gamedef);
 171 }
 172
 173 /*
 174         ServerRemotePlayer
 175 */
 176
 177 ServerRemotePlayer::ServerRemotePlayer(ServerEnvironment *env):
 178         Player(env->getGameDef()),
 179         ServerActiveObject(env, v3f(0,0,0))
 180 {
 181 }
 182 ServerRemotePlayer::ServerRemotePlayer(ServerEnvironment *env, v3f pos_, u16 peer_id_,
 183                 const char *name_):
 184         Player(env->getGameDef()),
 185         ServerActiveObject(env, pos_)
 186 {
 187         setPosition(pos_);
 188         peer_id = peer_id_;
 189         updateName(name_);
 190 }
 191
 192 /* ServerActiveObject interface */
 193
 194 InventoryItem* ServerRemotePlayer::getWieldedItem()
 195 {
 196         InventoryList *list = inventory.getList("main");
 197         if (list)
 198                 return list->getItem(m_selected_item);
 199         return NULL;
 200 }
 201 void ServerRemotePlayer::damageWieldedItem(u16 amount)
 202 {
 203         infostream<<"Damaging "<<getName()<<"'s wielded item for amount="
 204                         <<amount<<std::endl;
 205         InventoryList *list = inventory.getList("main");
 206         if(!list)
 207                 return;
 208         InventoryItem *item = list->getItem(m_selected_item);
 209         if(item && (std::string)item->getName() == "ToolItem"){
 210                 ToolItem *titem = (ToolItem*)item;
 211                 bool weared_out = titem->addWear(amount);
 212                 if(weared_out)
 213                         list->deleteItem(m_selected_item);
 214         }
 215 }
 216 bool ServerRemotePlayer::addToInventory(InventoryItem *item)
 217 {
 218         infostream<<"Adding "<<item->getName()<<" into "<<getName()
 219                         <<"'s inventory"<<std::endl;
 220
 221         InventoryList *ilist = inventory.getList("main");
 222         if(ilist == NULL)
 223                 return false;
 224
 225         // In creative mode, just delete the item
 226         if(g_settings->getBool("creative_mode")){
 227                 return false;
 228         }
 229
 230         // Skip if inventory has no free space
 231         if(ilist->roomForItem(item) == false)
 232         {
 233                 infostream<<"Player inventory has no free space"<<std::endl;
 234                 return false;
 235         }
 236
 237         // Add to inventory
 238         InventoryItem *leftover = ilist->addItem(item);
 239         assert(!leftover);
 240
 241         return true;
 242 }
 243 void ServerRemotePlayer::setHP(s16 hp_)
 244 {
 245         hp = hp_;
 246 }
 247 s16 ServerRemotePlayer::getHP()
 248 {
 249         return hp;
 250 }
 251
 252 /*
 253         RemotePlayer
 254 */
 255
 256 #ifndef SERVER
 257
 258 RemotePlayer::RemotePlayer(
 259                 IGameDef *gamedef,
 260                 scene::ISceneNode* parent,
 261                 IrrlichtDevice *device,
 262                 s32 id):
 263         Player(gamedef),
 264         scene::ISceneNode(parent, (device==NULL)?NULL:device->getSceneManager(), id),
 265         m_text(NULL)
 266 {
 267         m_box = core::aabbox3d<f32>(-BS/2,0,-BS/2,BS/2,BS*2,BS/2);
 268
 269         if(parent != NULL && device != NULL)
 270         {
 271                 // ISceneNode stores a member called SceneManager
 272                 scene::ISceneManager* mgr = SceneManager;
 273                 video::IVideoDriver* driver = mgr->getVideoDriver();
 274                 gui::IGUIEnvironment* gui = device->getGUIEnvironment();
 275
 276                 // Add a text node for showing the name
 277                 wchar_t wname[1] = {0};
 278                 m_text = mgr->addTextSceneNode(gui->getBuiltInFont(),
 279                                 wname, video::SColor(255,255,255,255), this);
 280                 m_text->setPosition(v3f(0, (f32)BS*2.1, 0));
 281
 282                 // Attach a simple mesh to the player for showing an image
 283                 scene::SMesh *mesh = new scene::SMesh();
 284                 { // Front
 285                 scene::IMeshBuffer *buf = new scene::SMeshBuffer();
 286                 video::SColor c(255,255,255,255);
 287                 video::S3DVertex vertices[4] =
 288                 {
 289                         video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
 290                         video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
 291                         video::S3DVertex(BS/2,BS*2,0, 0,0,0, c, 1,0),
 292                         video::S3DVertex(-BS/2,BS*2,0, 0,0,0, c, 0,0),
 293                 };
 294                 u16 indices[] = {0,1,2,2,3,0};
 295                 buf->append(vertices, 4, indices, 6);
 296                 // Set material
 297                 buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
 298                 //buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
 299                 buf->getMaterial().setTexture(0, driver->getTexture(getTexturePath("player.png").c_str()));
 300                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
 301                 buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
 302                 //buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 303                 buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 304                 // Add to mesh
 305                 mesh->addMeshBuffer(buf);
 306                 buf->drop();
 307                 }
 308                 { // Back
 309                 scene::IMeshBuffer *buf = new scene::SMeshBuffer();
 310                 video::SColor c(255,255,255,255);
 311                 video::S3DVertex vertices[4] =
 312                 {
 313                         video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
 314                         video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
 315                         video::S3DVertex(-BS/2,BS*2,0, 0,0,0, c, 0,0),
 316                         video::S3DVertex(BS/2,BS*2,0, 0,0,0, c, 1,0),
 317                 };
 318                 u16 indices[] = {0,1,2,2,3,0};
 319                 buf->append(vertices, 4, indices, 6);
 320                 // Set material
 321                 buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
 322                 //buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
 323                 buf->getMaterial().setTexture(0, driver->getTexture(getTexturePath("player_back.png").c_str()));
 324                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
 325                 buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
 326                 buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 327                 // Add to mesh
 328                 mesh->addMeshBuffer(buf);
 329                 buf->drop();
 330                 }
 331                 m_node = mgr->addMeshSceneNode(mesh, this);
 332                 mesh->drop();
 333                 m_node->setPosition(v3f(0,0,0));
 334         }
 335 }
 336
 337 RemotePlayer::~RemotePlayer()
 338 {
 339         if(SceneManager != NULL)
 340                 ISceneNode::remove();
 341 }
 342
 343 void RemotePlayer::updateName(const char *name)
 344 {
 345         Player::updateName(name);
 346         if(m_text != NULL)
 347         {
 348                 wchar_t wname[PLAYERNAME_SIZE];
 349                 mbstowcs(wname, m_name, strlen(m_name)+1);
 350                 m_text->setText(wname);
 351         }
 352 }
 353
 354 void RemotePlayer::move(f32 dtime, Map &map, f32 pos_max_d)
 355 {
 356         m_pos_animation_time_counter += dtime;
 357         m_pos_animation_counter += dtime;
 358         v3f movevector = m_position - m_oldpos;
 359         f32 moveratio;
 360         if(m_pos_animation_time < 0.001)
 361                 moveratio = 1.0;
 362         else
 363                 moveratio = m_pos_animation_counter / m_pos_animation_time;
 364         if(moveratio > 1.5)
 365                 moveratio = 1.5;
 366         m_showpos = m_oldpos + movevector * moveratio;
 367
 368         ISceneNode::setPosition(m_showpos);
 369 }
 370
 371 #endif
 372
 373 #ifndef SERVER
 374 /*
 375         LocalPlayer
 376 */
 377
 378 LocalPlayer::LocalPlayer(IGameDef *gamedef):
 379         Player(gamedef),
 380         m_sneak_node(32767,32767,32767),
 381         m_sneak_node_exists(false)
 382 {
 383         // Initialize hp to 0, so that no hearts will be shown if server
 384         // doesn't support health points
 385         hp = 0;
 386 }
 387
 388 LocalPlayer::~LocalPlayer()
 389 {
 390 }
 391
 392 void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d,
 393                 core::list<CollisionInfo> *collision_info)
 394 {
 395         INodeDefManager *nodemgr = m_gamedef->ndef();
 396
 397         v3f position = getPosition();
 398         v3f oldpos = position;
 399         v3s16 oldpos_i = floatToInt(oldpos, BS);
 400
 401         v3f old_speed = m_speed;
 402
 403         /*std::cout<<"oldpos_i=("<<oldpos_i.X<<","<<oldpos_i.Y<<","
 404                         <<oldpos_i.Z<<")"<<std::endl;*/
 405
 406         /*
 407                 Calculate new position
 408         */
 409         position += m_speed * dtime;
 410
 411         // Skip collision detection if a special movement mode is used
 412         bool free_move = g_settings->getBool("free_move");
 413         if(free_move)
 414         {
 415                 setPosition(position);
 416                 return;
 417         }
 418
 419         /*
 420                 Collision detection
 421         */
 422
 423         // Player position in nodes
 424         v3s16 pos_i = floatToInt(position, BS);
 425
 426         /*
 427                 Check if player is in water (the oscillating value)
 428         */
 429         try{
 430                 // If in water, the threshold of coming out is at higher y
 431                 if(in_water)
 432                 {
 433                         v3s16 pp = floatToInt(position + v3f(0,BS*0.1,0), BS);
 434                         in_water = nodemgr->get(map.getNode(pp).getContent()).isLiquid();
 435                 }
 436                 // If not in water, the threshold of going in is at lower y
 437                 else
 438                 {
 439                         v3s16 pp = floatToInt(position + v3f(0,BS*0.5,0), BS);
 440                         in_water = nodemgr->get(map.getNode(pp).getContent()).isLiquid();
 441                 }
 442         }
 443         catch(InvalidPositionException &e)
 444         {
 445                 in_water = false;
 446         }
 447
 448         /*
 449                 Check if player is in water (the stable value)
 450         */
 451         try{
 452                 v3s16 pp = floatToInt(position + v3f(0,0,0), BS);
 453                 in_water_stable = nodemgr->get(map.getNode(pp).getContent()).isLiquid();
 454         }
 455         catch(InvalidPositionException &e)
 456         {
 457                 in_water_stable = false;
 458         }
 459
 460         /*
 461                 Check if player is climbing
 462         */
 463
 464         try {
 465                 v3s16 pp = floatToInt(position + v3f(0,0.5*BS,0), BS);
 466                 v3s16 pp2 = floatToInt(position + v3f(0,-0.2*BS,0), BS);
 467                 is_climbing = ((nodemgr->get(map.getNode(pp).getContent()).climbable ||
 468                 nodemgr->get(map.getNode(pp2).getContent()).climbable) && !free_move);
 469         }
 470         catch(InvalidPositionException &e)
 471         {
 472                 is_climbing = false;
 473         }
 474
 475         /*
 476                 Collision uncertainty radius
 477                 Make it a bit larger than the maximum distance of movement
 478         */
 479         //f32 d = pos_max_d * 1.1;
 480         // A fairly large value in here makes moving smoother
 481         f32 d = 0.15*BS;
 482
 483         // This should always apply, otherwise there are glitches
 484         assert(d > pos_max_d);
 485
 486         float player_radius = BS*0.35;
 487         float player_height = BS*1.7;
 488
 489         // Maximum distance over border for sneaking
 490         f32 sneak_max = BS*0.4;
 491
 492         /*
 493                 If sneaking, player has larger collision radius to keep from
 494                 falling
 495         */
 496         /*if(control.sneak)
 497                 player_radius = sneak_max + d*1.1;*/
 498
 499         /*
 500                 If sneaking, keep in range from the last walked node and don't
 501                 fall off from it
 502         */
 503         if(control.sneak && m_sneak_node_exists)
 504         {
 505                 f32 maxd = 0.5*BS + sneak_max;
 506                 v3f lwn_f = intToFloat(m_sneak_node, BS);
 507                 position.X = rangelim(position.X, lwn_f.X-maxd, lwn_f.X+maxd);
 508                 position.Z = rangelim(position.Z, lwn_f.Z-maxd, lwn_f.Z+maxd);
 509
 510                 f32 min_y = lwn_f.Y + 0.5*BS;
 511                 if(position.Y < min_y)
 512                 {
 513                         position.Y = min_y;
 514
 515                         //v3f old_speed = m_speed;
 516
 517                         if(m_speed.Y < 0)
 518                                 m_speed.Y = 0;
 519
 520                         /*if(collision_info)
 521                         {
 522                                 // Report fall collision
 523                                 if(old_speed.Y < m_speed.Y - 0.1)
 524                                 {
 525                                         CollisionInfo info;
 526                                         info.t = COLLISION_FALL;
 527                                         info.speed = m_speed.Y - old_speed.Y;
 528                                         collision_info->push_back(info);
 529                                 }
 530                         }*/
 531                 }
 532         }
 533
 534         /*
 535                 Calculate player collision box (new and old)
 536         */
 537         core::aabbox3d<f32> playerbox(
 538                 position.X - player_radius,
 539                 position.Y - 0.0,
 540                 position.Z - player_radius,
 541                 position.X + player_radius,
 542                 position.Y + player_height,
 543                 position.Z + player_radius
 544         );
 545         core::aabbox3d<f32> playerbox_old(
 546                 oldpos.X - player_radius,
 547                 oldpos.Y - 0.0,
 548                 oldpos.Z - player_radius,
 549                 oldpos.X + player_radius,
 550                 oldpos.Y + player_height,
 551                 oldpos.Z + player_radius
 552         );
 553
 554         /*
 555                 If the player's feet touch the topside of any node, this is
 556                 set to true.
 557
 558                 Player is allowed to jump when this is true.
 559         */
 560         touching_ground = false;
 561
 562         /*std::cout<<"Checking collisions for ("
 563                         <<oldpos_i.X<<","<<oldpos_i.Y<<","<<oldpos_i.Z
 564                         <<") -> ("
 565                         <<pos_i.X<<","<<pos_i.Y<<","<<pos_i.Z
 566                         <<"):"<<std::endl;*/
 567
 568         bool standing_on_unloaded = false;
 569
 570         /*
 571                 Go through every node around the player
 572         */
 573         for(s16 y = oldpos_i.Y - 1; y <= oldpos_i.Y + 2; y++)
 574         for(s16 z = oldpos_i.Z - 1; z <= oldpos_i.Z + 1; z++)
 575         for(s16 x = oldpos_i.X - 1; x <= oldpos_i.X + 1; x++)
 576         {
 577                 bool is_unloaded = false;
 578                 try{
 579                         // Player collides into walkable nodes
 580                         if(nodemgr->get(map.getNode(v3s16(x,y,z))).walkable == false)
 581                                 continue;
 582                 }
 583                 catch(InvalidPositionException &e)
 584                 {
 585                         is_unloaded = true;
 586                         // Doing nothing here will block the player from
 587                         // walking over map borders
 588                 }
 589
 590                 core::aabbox3d<f32> nodebox = getNodeBox(v3s16(x,y,z), BS);
 591
 592                 /*
 593                         See if the player is touching ground.
 594
 595                         Player touches ground if player's minimum Y is near node's
 596                         maximum Y and player's X-Z-area overlaps with the node's
 597                         X-Z-area.
 598
 599                         Use 0.15*BS so that it is easier to get on a node.
 600                 */
 601                 if(
 602                                 //fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < d
 603                                 fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < 0.15*BS
 604                                 && nodebox.MaxEdge.X-d > playerbox.MinEdge.X
 605                                 && nodebox.MinEdge.X+d < playerbox.MaxEdge.X
 606                                 && nodebox.MaxEdge.Z-d > playerbox.MinEdge.Z
 607                                 && nodebox.MinEdge.Z+d < playerbox.MaxEdge.Z
 608                 ){
 609                         touching_ground = true;
 610                         if(is_unloaded)
 611                                 standing_on_unloaded = true;
 612                 }
 613
 614                 // If player doesn't intersect with node, ignore node.
 615                 if(playerbox.intersectsWithBox(nodebox) == false)
 616                         continue;
 617
 618                 /*
 619                         Go through every axis
 620                 */
 621                 v3f dirs[3] = {
 622                         v3f(0,0,1), // back-front
 623                         v3f(0,1,0), // top-bottom
 624                         v3f(1,0,0), // right-left
 625                 };
 626                 for(u16 i=0; i<3; i++)
 627                 {
 628                         /*
 629                                 Calculate values along the axis
 630                         */
 631                         f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[i]);
 632                         f32 nodemin = nodebox.MinEdge.dotProduct(dirs[i]);
 633                         f32 playermax = playerbox.MaxEdge.dotProduct(dirs[i]);
 634                         f32 playermin = playerbox.MinEdge.dotProduct(dirs[i]);
 635                         f32 playermax_old = playerbox_old.MaxEdge.dotProduct(dirs[i]);
 636                         f32 playermin_old = playerbox_old.MinEdge.dotProduct(dirs[i]);
 637
 638                         /*
 639                                 Check collision for the axis.
 640                                 Collision happens when player is going through a surface.
 641                         */
 642                         /*f32 neg_d = d;
 643                         f32 pos_d = d;
 644                         // Make it easier to get on top of a node
 645                         if(i == 1)
 646                                 neg_d = 0.15*BS;
 647                         bool negative_axis_collides =
 648                                 (nodemax > playermin && nodemax <= playermin_old + neg_d
 649                                         && m_speed.dotProduct(dirs[i]) < 0);
 650                         bool positive_axis_collides =
 651                                 (nodemin < playermax && nodemin >= playermax_old - pos_d
 652                                         && m_speed.dotProduct(dirs[i]) > 0);*/
 653                         bool negative_axis_collides =
 654                                 (nodemax > playermin && nodemax <= playermin_old + d
 655                                         && m_speed.dotProduct(dirs[i]) < 0);
 656                         bool positive_axis_collides =
 657                                 (nodemin < playermax && nodemin >= playermax_old - d
 658                                         && m_speed.dotProduct(dirs[i]) > 0);
 659                         bool main_axis_collides =
 660                                         negative_axis_collides || positive_axis_collides;
 661
 662                         /*
 663                                 Check overlap of player and node in other axes
 664                         */
 665                         bool other_axes_overlap = true;
 666                         for(u16 j=0; j<3; j++)
 667                         {
 668                                 if(j == i)
 669                                         continue;
 670                                 f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[j]);
 671                                 f32 nodemin = nodebox.MinEdge.dotProduct(dirs[j]);
 672                                 f32 playermax = playerbox.MaxEdge.dotProduct(dirs[j]);
 673                                 f32 playermin = playerbox.MinEdge.dotProduct(dirs[j]);
 674                                 if(!(nodemax - d > playermin && nodemin + d < playermax))
 675                                 {
 676                                         other_axes_overlap = false;
 677                                         break;
 678                                 }
 679                         }
 680
 681                         /*
 682                                 If this is a collision, revert the position in the main
 683                                 direction.
 684                         */
 685                         if(other_axes_overlap && main_axis_collides)
 686                         {
 687                                 //v3f old_speed = m_speed;
 688
 689                                 m_speed -= m_speed.dotProduct(dirs[i]) * dirs[i];
 690                                 position -= position.dotProduct(dirs[i]) * dirs[i];
 691                                 position += oldpos.dotProduct(dirs[i]) * dirs[i];
 692
 693                                 /*if(collision_info)
 694                                 {
 695                                         // Report fall collision
 696                                         if(old_speed.Y < m_speed.Y - 0.1)
 697                                         {
 698                                                 CollisionInfo info;
 699                                                 info.t = COLLISION_FALL;
 700                                                 info.speed = m_speed.Y - old_speed.Y;
 701                                                 collision_info->push_back(info);
 702                                         }
 703                                 }*/
 704                         }
 705
 706                 }
 707         } // xyz
 708
 709         /*
 710                 Check the nodes under the player to see from which node the
 711                 player is sneaking from, if any.
 712         */
 713         {
 714                 v3s16 pos_i_bottom = floatToInt(position - v3f(0,BS/2,0), BS);
 715                 v2f player_p2df(position.X, position.Z);
 716                 f32 min_distance_f = 100000.0*BS;
 717                 // If already seeking from some node, compare to it.
 718                 /*if(m_sneak_node_exists)
 719                 {
 720                         v3f sneaknode_pf = intToFloat(m_sneak_node, BS);
 721                         v2f sneaknode_p2df(sneaknode_pf.X, sneaknode_pf.Z);
 722                         f32 d_horiz_f = player_p2df.getDistanceFrom(sneaknode_p2df);
 723                         f32 d_vert_f = fabs(sneaknode_pf.Y + BS*0.5 - position.Y);
 724                         // Ignore if player is not on the same level (likely dropped)
 725                         if(d_vert_f < 0.15*BS)
 726                                 min_distance_f = d_horiz_f;
 727                 }*/
 728                 v3s16 new_sneak_node = m_sneak_node;
 729                 for(s16 x=-1; x<=1; x++)
 730                 for(s16 z=-1; z<=1; z++)
 731                 {
 732                         v3s16 p = pos_i_bottom + v3s16(x,0,z);
 733                         v3f pf = intToFloat(p, BS);
 734                         v2f node_p2df(pf.X, pf.Z);
 735                         f32 distance_f = player_p2df.getDistanceFrom(node_p2df);
 736                         f32 max_axis_distance_f = MYMAX(
 737                                         fabs(player_p2df.X-node_p2df.X),
 738                                         fabs(player_p2df.Y-node_p2df.Y));
 739
 740                         if(distance_f > min_distance_f ||
 741                                         max_axis_distance_f > 0.5*BS + sneak_max + 0.1*BS)
 742                                 continue;
 743
 744                         try{
 745                                 // The node to be sneaked on has to be walkable
 746                                 if(nodemgr->get(map.getNode(p)).walkable == false)
 747                                         continue;
 748                                 // And the node above it has to be nonwalkable
 749                                 if(nodemgr->get(map.getNode(p+v3s16(0,1,0))).walkable == true)
 750                                         continue;
 751                         }
 752                         catch(InvalidPositionException &e)
 753                         {
 754                                 continue;
 755                         }
 756
 757                         min_distance_f = distance_f;
 758                         new_sneak_node = p;
 759                 }
 760
 761                 bool sneak_node_found = (min_distance_f < 100000.0*BS*0.9);
 762
 763                 if(control.sneak && m_sneak_node_exists)
 764                 {
 765                         if(sneak_node_found)
 766                                 m_sneak_node = new_sneak_node;
 767                 }
 768                 else
 769                 {
 770                         m_sneak_node = new_sneak_node;
 771                         m_sneak_node_exists = sneak_node_found;
 772                 }
 773
 774                 /*
 775                         If sneaking, the player's collision box can be in air, so
 776                         this has to be set explicitly
 777                 */
 778                 if(sneak_node_found && control.sneak)
 779                         touching_ground = true;
 780         }
 781
 782         /*
 783                 Set new position
 784         */
 785         setPosition(position);
 786
 787         /*
 788                 Report collisions
 789         */
 790         if(collision_info)
 791         {
 792                 // Report fall collision
 793                 if(old_speed.Y < m_speed.Y - 0.1 && !standing_on_unloaded)
 794                 {
 795                         CollisionInfo info;
 796                         info.t = COLLISION_FALL;
 797                         info.speed = m_speed.Y - old_speed.Y;
 798                         collision_info->push_back(info);
 799                 }
 800         }
 801 }
 802
 803 void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d)
 804 {
 805         move(dtime, map, pos_max_d, NULL);
 806 }
 807
 808 void LocalPlayer::applyControl(float dtime)
 809 {
 810         // Clear stuff
 811         swimming_up = false;
 812
 813         // Random constants
 814         f32 walk_acceleration = 4.0 * BS;
 815         f32 walkspeed_max = 4.0 * BS;
 816
 817         setPitch(control.pitch);
 818         setYaw(control.yaw);
 819
 820         v3f move_direction = v3f(0,0,1);
 821         move_direction.rotateXZBy(getYaw());
 822
 823         v3f speed = v3f(0,0,0);
 824
 825         bool free_move = g_settings->getBool("free_move");
 826         bool fast_move = g_settings->getBool("fast_move");
 827         bool continuous_forward = g_settings->getBool("continuous_forward");
 828
 829         if(free_move || is_climbing)
 830         {
 831                 v3f speed = getSpeed();
 832                 speed.Y = 0;
 833                 setSpeed(speed);
 834         }
 835
 836         // Whether superspeed mode is used or not
 837         bool superspeed = false;
 838
 839         // If free movement and fast movement, always move fast
 840         if(free_move && fast_move)
 841                 superspeed = true;
 842
 843         // Auxiliary button 1 (E)
 844         if(control.aux1)
 845         {
 846                 if(free_move)
 847                 {
 848                         // In free movement mode, aux1 descends
 849                         v3f speed = getSpeed();
 850                         if(fast_move)
 851                                 speed.Y = -20*BS;
 852                         else
 853                                 speed.Y = -walkspeed_max;
 854                         setSpeed(speed);
 855                 }
 856                 else if(is_climbing)
 857                 {
 858                         v3f speed = getSpeed();
 859                         speed.Y = -3*BS;
 860                         setSpeed(speed);
 861                 }
 862                 else
 863                 {
 864                         // If not free movement but fast is allowed, aux1 is
 865                         // "Turbo button"
 866                         if(fast_move)
 867                                 superspeed = true;
 868                 }
 869         }
 870
 871         if(continuous_forward)
 872                 speed += move_direction;
 873
 874         if(control.up)
 875         {
 876                 if(continuous_forward)
 877                         superspeed = true;
 878                 else
 879                         speed += move_direction;
 880         }
 881         if(control.down)
 882         {
 883                 speed -= move_direction;
 884         }
 885         if(control.left)
 886         {
 887                 speed += move_direction.crossProduct(v3f(0,1,0));
 888         }
 889         if(control.right)
 890         {
 891                 speed += move_direction.crossProduct(v3f(0,-1,0));
 892         }
 893         if(control.jump)
 894         {
 895                 if(free_move)
 896                 {
 897                         v3f speed = getSpeed();
 898                         if(fast_move)
 899                                 speed.Y = 20*BS;
 900                         else
 901                                 speed.Y = walkspeed_max;
 902                         setSpeed(speed);
 903                 }
 904                 else if(touching_ground)
 905                 {
 906                         v3f speed = getSpeed();
 907                         /*
 908                                 NOTE: The d value in move() affects jump height by
 909                                 raising the height at which the jump speed is kept
 910                                 at its starting value
 911                         */
 912                         speed.Y = 6.5*BS;
 913                         setSpeed(speed);
 914                 }
 915                 // Use the oscillating value for getting out of water
 916                 // (so that the player doesn't fly on the surface)
 917                 else if(in_water)
 918                 {
 919                         v3f speed = getSpeed();
 920                         speed.Y = 1.5*BS;
 921                         setSpeed(speed);
 922                         swimming_up = true;
 923                 }
 924                 else if(is_climbing)
 925                 {
 926                         v3f speed = getSpeed();
 927                         speed.Y = 3*BS;
 928                         setSpeed(speed);
 929                 }
 930         }
 931
 932         // The speed of the player (Y is ignored)
 933         if(superspeed)
 934                 speed = speed.normalize() * walkspeed_max * 5.0;
 935         else if(control.sneak)
 936                 speed = speed.normalize() * walkspeed_max / 3.0;
 937         else
 938                 speed = speed.normalize() * walkspeed_max;
 939
 940         f32 inc = walk_acceleration * BS * dtime;
 941
 942         // Faster acceleration if fast and free movement
 943         if(free_move && fast_move)
 944                 inc = walk_acceleration * BS * dtime * 10;
 945
 946         // Accelerate to target speed with maximum increment
 947         accelerate(speed, inc);
 948 }
 949 #endif
 950