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 v3s16 Player::getLightPosition() const
 112 {
 113         return floatToInt(m_position + v3f(0,BS+BS/2,0), BS);
 114 }
 115
 116 void Player::serialize(std::ostream &os)
 117 {
 118         // Utilize a Settings object for storing values
 119         Settings args;
 120         args.setS32("version", 1);
 121         args.set("name", m_name);
 122         //args.set("password", m_password);
 123         args.setFloat("pitch", m_pitch);
 124         args.setFloat("yaw", m_yaw);
 125         args.setV3F("position", m_position);
 126         args.setBool("craftresult_is_preview", craftresult_is_preview);
 127         args.setS32("hp", hp);
 128
 129         args.writeLines(os);
 130
 131         os<<"PlayerArgsEnd\n";
 132
 133         // If actual inventory is backed up due to creative mode, save it
 134         // instead of the dummy creative mode inventory
 135         if(inventory_backup)
 136                 inventory_backup->serialize(os);
 137         else
 138                 inventory.serialize(os);
 139 }
 140
 141 void Player::deSerialize(std::istream &is)
 142 {
 143         Settings args;
 144
 145         for(;;)
 146         {
 147                 if(is.eof())
 148                         throw SerializationError
 149                                         ("Player::deSerialize(): PlayerArgsEnd not found");
 150                 std::string line;
 151                 std::getline(is, line);
 152                 std::string trimmedline = trim(line);
 153                 if(trimmedline == "PlayerArgsEnd")
 154                         break;
 155                 args.parseConfigLine(line);
 156         }
 157
 158         //args.getS32("version"); // Version field value not used
 159         std::string name = args.get("name");
 160         updateName(name.c_str());
 161         setPitch(args.getFloat("pitch"));
 162         setYaw(args.getFloat("yaw"));
 163         setPosition(args.getV3F("position"));
 164         try{
 165                 craftresult_is_preview = args.getBool("craftresult_is_preview");
 166         }catch(SettingNotFoundException &e){
 167                 craftresult_is_preview = true;
 168         }
 169         try{
 170                 hp = args.getS32("hp");
 171         }catch(SettingNotFoundException &e){
 172                 hp = 20;
 173         }
 174
 175         inventory.deSerialize(is, m_gamedef);
 176 }
 177
 178 /*
 179         ServerRemotePlayer
 180 */
 181
 182 ServerRemotePlayer::ServerRemotePlayer(ServerEnvironment *env):
 183         Player(env->getGameDef()),
 184         ServerActiveObject(env, v3f(0,0,0)),
 185         m_last_good_position(0,0,0),
 186         m_last_good_position_age(0)
 187 {
 188 }
 189 ServerRemotePlayer::ServerRemotePlayer(ServerEnvironment *env, v3f pos_, u16 peer_id_,
 190                 const char *name_):
 191         Player(env->getGameDef()),
 192         ServerActiveObject(env, pos_)
 193 {
 194         setPosition(pos_);
 195         peer_id = peer_id_;
 196         updateName(name_);
 197 }
 198
 199 /* ServerActiveObject interface */
 200
 201 InventoryItem* ServerRemotePlayer::getWieldedItem()
 202 {
 203         InventoryList *list = inventory.getList("main");
 204         if (list)
 205                 return list->getItem(m_selected_item);
 206         return NULL;
 207 }
 208 void ServerRemotePlayer::damageWieldedItem(u16 amount)
 209 {
 210         infostream<<"Damaging "<<getName()<<"'s wielded item for amount="
 211                         <<amount<<std::endl;
 212         InventoryList *list = inventory.getList("main");
 213         if(!list)
 214                 return;
 215         InventoryItem *item = list->getItem(m_selected_item);
 216         if(item && (std::string)item->getName() == "ToolItem"){
 217                 ToolItem *titem = (ToolItem*)item;
 218                 bool weared_out = titem->addWear(amount);
 219                 if(weared_out)
 220                         list->deleteItem(m_selected_item);
 221         }
 222 }
 223 bool ServerRemotePlayer::addToInventory(InventoryItem *item)
 224 {
 225         infostream<<"Adding "<<item->getName()<<" into "<<getName()
 226                         <<"'s inventory"<<std::endl;
 227
 228         InventoryList *ilist = inventory.getList("main");
 229         if(ilist == NULL)
 230                 return false;
 231
 232         // In creative mode, just delete the item
 233         if(g_settings->getBool("creative_mode")){
 234                 return false;
 235         }
 236
 237         // Skip if inventory has no free space
 238         if(ilist->roomForItem(item) == false)
 239         {
 240                 infostream<<"Player inventory has no free space"<<std::endl;
 241                 return false;
 242         }
 243
 244         // Add to inventory
 245         InventoryItem *leftover = ilist->addItem(item);
 246         assert(!leftover);
 247
 248         return true;
 249 }
 250 void ServerRemotePlayer::setHP(s16 hp_)
 251 {
 252         hp = hp_;
 253 }
 254 s16 ServerRemotePlayer::getHP()
 255 {
 256         return hp;
 257 }
 258
 259 /*
 260         RemotePlayer
 261 */
 262
 263 #ifndef SERVER
 264
 265 RemotePlayer::RemotePlayer(
 266                 IGameDef *gamedef,
 267                 scene::ISceneNode* parent,
 268                 IrrlichtDevice *device,
 269                 s32 id):
 270         Player(gamedef),
 271         scene::ISceneNode(parent, (device==NULL)?NULL:device->getSceneManager(), id),
 272         m_text(NULL)
 273 {
 274         m_box = core::aabbox3d<f32>(-BS/2,0,-BS/2,BS/2,BS*2,BS/2);
 275
 276         if(parent != NULL && device != NULL)
 277         {
 278                 // ISceneNode stores a member called SceneManager
 279                 scene::ISceneManager* mgr = SceneManager;
 280                 video::IVideoDriver* driver = mgr->getVideoDriver();
 281                 gui::IGUIEnvironment* gui = device->getGUIEnvironment();
 282
 283                 // Add a text node for showing the name
 284                 wchar_t wname[1] = {0};
 285                 m_text = mgr->addTextSceneNode(gui->getBuiltInFont(),
 286                                 wname, video::SColor(255,255,255,255), this);
 287                 m_text->setPosition(v3f(0, (f32)BS*2.1, 0));
 288
 289                 // Attach a simple mesh to the player for showing an image
 290                 scene::SMesh *mesh = new scene::SMesh();
 291                 { // Front
 292                 scene::IMeshBuffer *buf = new scene::SMeshBuffer();
 293                 video::SColor c(255,255,255,255);
 294                 video::S3DVertex vertices[4] =
 295                 {
 296                         video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
 297                         video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
 298                         video::S3DVertex(BS/2,BS*2,0, 0,0,0, c, 1,0),
 299                         video::S3DVertex(-BS/2,BS*2,0, 0,0,0, c, 0,0),
 300                 };
 301                 u16 indices[] = {0,1,2,2,3,0};
 302                 buf->append(vertices, 4, indices, 6);
 303                 // Set material
 304                 buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
 305                 //buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
 306                 buf->getMaterial().setTexture(0, driver->getTexture(getTexturePath("player.png").c_str()));
 307                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
 308                 buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
 309                 //buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 310                 buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 311                 // Add to mesh
 312                 mesh->addMeshBuffer(buf);
 313                 buf->drop();
 314                 }
 315                 { // Back
 316                 scene::IMeshBuffer *buf = new scene::SMeshBuffer();
 317                 video::SColor c(255,255,255,255);
 318                 video::S3DVertex vertices[4] =
 319                 {
 320                         video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
 321                         video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
 322                         video::S3DVertex(-BS/2,BS*2,0, 0,0,0, c, 0,0),
 323                         video::S3DVertex(BS/2,BS*2,0, 0,0,0, c, 1,0),
 324                 };
 325                 u16 indices[] = {0,1,2,2,3,0};
 326                 buf->append(vertices, 4, indices, 6);
 327                 // Set material
 328                 buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
 329                 //buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
 330                 buf->getMaterial().setTexture(0, driver->getTexture(getTexturePath("player_back.png").c_str()));
 331                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
 332                 buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
 333                 buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 334                 // Add to mesh
 335                 mesh->addMeshBuffer(buf);
 336                 buf->drop();
 337                 }
 338                 m_node = mgr->addMeshSceneNode(mesh, this);
 339                 mesh->drop();
 340                 m_node->setPosition(v3f(0,0,0));
 341         }
 342 }
 343
 344 RemotePlayer::~RemotePlayer()
 345 {
 346         if(SceneManager != NULL)
 347                 ISceneNode::remove();
 348 }
 349
 350 void RemotePlayer::updateName(const char *name)
 351 {
 352         Player::updateName(name);
 353         if(m_text != NULL)
 354         {
 355                 wchar_t wname[PLAYERNAME_SIZE];
 356                 mbstowcs(wname, m_name, strlen(m_name)+1);
 357                 m_text->setText(wname);
 358         }
 359 }
 360
 361 void RemotePlayer::move(f32 dtime, Map &map, f32 pos_max_d)
 362 {
 363         m_pos_animation_time_counter += dtime;
 364         m_pos_animation_counter += dtime;
 365         v3f movevector = m_position - m_oldpos;
 366         f32 moveratio;
 367         if(m_pos_animation_time < 0.001)
 368                 moveratio = 1.0;
 369         else
 370                 moveratio = m_pos_animation_counter / m_pos_animation_time;
 371         if(moveratio > 1.5)
 372                 moveratio = 1.5;
 373         m_showpos = m_oldpos + movevector * moveratio;
 374
 375         ISceneNode::setPosition(m_showpos);
 376 }
 377
 378 #endif
 379
 380 #ifndef SERVER
 381 /*
 382         LocalPlayer
 383 */
 384
 385 LocalPlayer::LocalPlayer(IGameDef *gamedef):
 386         Player(gamedef),
 387         m_sneak_node(32767,32767,32767),
 388         m_sneak_node_exists(false)
 389 {
 390         // Initialize hp to 0, so that no hearts will be shown if server
 391         // doesn't support health points
 392         hp = 0;
 393 }
 394
 395 LocalPlayer::~LocalPlayer()
 396 {
 397 }
 398
 399 void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d,
 400                 core::list<CollisionInfo> *collision_info)
 401 {
 402         INodeDefManager *nodemgr = m_gamedef->ndef();
 403
 404         v3f position = getPosition();
 405         v3f oldpos = position;
 406         v3s16 oldpos_i = floatToInt(oldpos, BS);
 407
 408         v3f old_speed = m_speed;
 409
 410         /*std::cout<<"oldpos_i=("<<oldpos_i.X<<","<<oldpos_i.Y<<","
 411                         <<oldpos_i.Z<<")"<<std::endl;*/
 412
 413         /*
 414                 Calculate new position
 415         */
 416         position += m_speed * dtime;
 417
 418         // Skip collision detection if a special movement mode is used
 419         bool free_move = g_settings->getBool("free_move");
 420         if(free_move)
 421         {
 422                 setPosition(position);
 423                 return;
 424         }
 425
 426         /*
 427                 Collision detection
 428         */
 429
 430         // Player position in nodes
 431         v3s16 pos_i = floatToInt(position, BS);
 432
 433         /*
 434                 Check if player is in water (the oscillating value)
 435         */
 436         try{
 437                 // If in water, the threshold of coming out is at higher y
 438                 if(in_water)
 439                 {
 440                         v3s16 pp = floatToInt(position + v3f(0,BS*0.1,0), BS);
 441                         in_water = nodemgr->get(map.getNode(pp).getContent()).isLiquid();
 442                 }
 443                 // If not in water, the threshold of going in is at lower y
 444                 else
 445                 {
 446                         v3s16 pp = floatToInt(position + v3f(0,BS*0.5,0), BS);
 447                         in_water = nodemgr->get(map.getNode(pp).getContent()).isLiquid();
 448                 }
 449         }
 450         catch(InvalidPositionException &e)
 451         {
 452                 in_water = false;
 453         }
 454
 455         /*
 456                 Check if player is in water (the stable value)
 457         */
 458         try{
 459                 v3s16 pp = floatToInt(position + v3f(0,0,0), BS);
 460                 in_water_stable = nodemgr->get(map.getNode(pp).getContent()).isLiquid();
 461         }
 462         catch(InvalidPositionException &e)
 463         {
 464                 in_water_stable = false;
 465         }
 466
 467         /*
 468                 Check if player is climbing
 469         */
 470
 471         try {
 472                 v3s16 pp = floatToInt(position + v3f(0,0.5*BS,0), BS);
 473                 v3s16 pp2 = floatToInt(position + v3f(0,-0.2*BS,0), BS);
 474                 is_climbing = ((nodemgr->get(map.getNode(pp).getContent()).climbable ||
 475                 nodemgr->get(map.getNode(pp2).getContent()).climbable) && !free_move);
 476         }
 477         catch(InvalidPositionException &e)
 478         {
 479                 is_climbing = false;
 480         }
 481
 482         /*
 483                 Collision uncertainty radius
 484                 Make it a bit larger than the maximum distance of movement
 485         */
 486         //f32 d = pos_max_d * 1.1;
 487         // A fairly large value in here makes moving smoother
 488         f32 d = 0.15*BS;
 489
 490         // This should always apply, otherwise there are glitches
 491         assert(d > pos_max_d);
 492
 493         float player_radius = BS*0.35;
 494         float player_height = BS*1.7;
 495
 496         // Maximum distance over border for sneaking
 497         f32 sneak_max = BS*0.4;
 498
 499         /*
 500                 If sneaking, player has larger collision radius to keep from
 501                 falling
 502         */
 503         /*if(control.sneak)
 504                 player_radius = sneak_max + d*1.1;*/
 505
 506         /*
 507                 If sneaking, keep in range from the last walked node and don't
 508                 fall off from it
 509         */
 510         if(control.sneak && m_sneak_node_exists)
 511         {
 512                 f32 maxd = 0.5*BS + sneak_max;
 513                 v3f lwn_f = intToFloat(m_sneak_node, BS);
 514                 position.X = rangelim(position.X, lwn_f.X-maxd, lwn_f.X+maxd);
 515                 position.Z = rangelim(position.Z, lwn_f.Z-maxd, lwn_f.Z+maxd);
 516
 517                 f32 min_y = lwn_f.Y + 0.5*BS;
 518                 if(position.Y < min_y)
 519                 {
 520                         position.Y = min_y;
 521
 522                         //v3f old_speed = m_speed;
 523
 524                         if(m_speed.Y < 0)
 525                                 m_speed.Y = 0;
 526
 527                         /*if(collision_info)
 528                         {
 529                                 // Report fall collision
 530                                 if(old_speed.Y < m_speed.Y - 0.1)
 531                                 {
 532                                         CollisionInfo info;
 533                                         info.t = COLLISION_FALL;
 534                                         info.speed = m_speed.Y - old_speed.Y;
 535                                         collision_info->push_back(info);
 536                                 }
 537                         }*/
 538                 }
 539         }
 540
 541         /*
 542                 Calculate player collision box (new and old)
 543         */
 544         core::aabbox3d<f32> playerbox(
 545                 position.X - player_radius,
 546                 position.Y - 0.0,
 547                 position.Z - player_radius,
 548                 position.X + player_radius,
 549                 position.Y + player_height,
 550                 position.Z + player_radius
 551         );
 552         core::aabbox3d<f32> playerbox_old(
 553                 oldpos.X - player_radius,
 554                 oldpos.Y - 0.0,
 555                 oldpos.Z - player_radius,
 556                 oldpos.X + player_radius,
 557                 oldpos.Y + player_height,
 558                 oldpos.Z + player_radius
 559         );
 560
 561         /*
 562                 If the player's feet touch the topside of any node, this is
 563                 set to true.
 564
 565                 Player is allowed to jump when this is true.
 566         */
 567         touching_ground = false;
 568
 569         /*std::cout<<"Checking collisions for ("
 570                         <<oldpos_i.X<<","<<oldpos_i.Y<<","<<oldpos_i.Z
 571                         <<") -> ("
 572                         <<pos_i.X<<","<<pos_i.Y<<","<<pos_i.Z
 573                         <<"):"<<std::endl;*/
 574
 575         bool standing_on_unloaded = false;
 576
 577         /*
 578                 Go through every node around the player
 579         */
 580         for(s16 y = oldpos_i.Y - 1; y <= oldpos_i.Y + 2; y++)
 581         for(s16 z = oldpos_i.Z - 1; z <= oldpos_i.Z + 1; z++)
 582         for(s16 x = oldpos_i.X - 1; x <= oldpos_i.X + 1; x++)
 583         {
 584                 bool is_unloaded = false;
 585                 try{
 586                         // Player collides into walkable nodes
 587                         if(nodemgr->get(map.getNode(v3s16(x,y,z))).walkable == false)
 588                                 continue;
 589                 }
 590                 catch(InvalidPositionException &e)
 591                 {
 592                         is_unloaded = true;
 593                         // Doing nothing here will block the player from
 594                         // walking over map borders
 595                 }
 596
 597                 core::aabbox3d<f32> nodebox = getNodeBox(v3s16(x,y,z), BS);
 598
 599                 /*
 600                         See if the player is touching ground.
 601
 602                         Player touches ground if player's minimum Y is near node's
 603                         maximum Y and player's X-Z-area overlaps with the node's
 604                         X-Z-area.
 605
 606                         Use 0.15*BS so that it is easier to get on a node.
 607                 */
 608                 if(
 609                                 //fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < d
 610                                 fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < 0.15*BS
 611                                 && nodebox.MaxEdge.X-d > playerbox.MinEdge.X
 612                                 && nodebox.MinEdge.X+d < playerbox.MaxEdge.X
 613                                 && nodebox.MaxEdge.Z-d > playerbox.MinEdge.Z
 614                                 && nodebox.MinEdge.Z+d < playerbox.MaxEdge.Z
 615                 ){
 616                         touching_ground = true;
 617                         if(is_unloaded)
 618                                 standing_on_unloaded = true;
 619                 }
 620
 621                 // If player doesn't intersect with node, ignore node.
 622                 if(playerbox.intersectsWithBox(nodebox) == false)
 623                         continue;
 624
 625                 /*
 626                         Go through every axis
 627                 */
 628                 v3f dirs[3] = {
 629                         v3f(0,0,1), // back-front
 630                         v3f(0,1,0), // top-bottom
 631                         v3f(1,0,0), // right-left
 632                 };
 633                 for(u16 i=0; i<3; i++)
 634                 {
 635                         /*
 636                                 Calculate values along the axis
 637                         */
 638                         f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[i]);
 639                         f32 nodemin = nodebox.MinEdge.dotProduct(dirs[i]);
 640                         f32 playermax = playerbox.MaxEdge.dotProduct(dirs[i]);
 641                         f32 playermin = playerbox.MinEdge.dotProduct(dirs[i]);
 642                         f32 playermax_old = playerbox_old.MaxEdge.dotProduct(dirs[i]);
 643                         f32 playermin_old = playerbox_old.MinEdge.dotProduct(dirs[i]);
 644
 645                         /*
 646                                 Check collision for the axis.
 647                                 Collision happens when player is going through a surface.
 648                         */
 649                         /*f32 neg_d = d;
 650                         f32 pos_d = d;
 651                         // Make it easier to get on top of a node
 652                         if(i == 1)
 653                                 neg_d = 0.15*BS;
 654                         bool negative_axis_collides =
 655                                 (nodemax > playermin && nodemax <= playermin_old + neg_d
 656                                         && m_speed.dotProduct(dirs[i]) < 0);
 657                         bool positive_axis_collides =
 658                                 (nodemin < playermax && nodemin >= playermax_old - pos_d
 659                                         && m_speed.dotProduct(dirs[i]) > 0);*/
 660                         bool negative_axis_collides =
 661                                 (nodemax > playermin && nodemax <= playermin_old + d
 662                                         && m_speed.dotProduct(dirs[i]) < 0);
 663                         bool positive_axis_collides =
 664                                 (nodemin < playermax && nodemin >= playermax_old - d
 665                                         && m_speed.dotProduct(dirs[i]) > 0);
 666                         bool main_axis_collides =
 667                                         negative_axis_collides || positive_axis_collides;
 668
 669                         /*
 670                                 Check overlap of player and node in other axes
 671                         */
 672                         bool other_axes_overlap = true;
 673                         for(u16 j=0; j<3; j++)
 674                         {
 675                                 if(j == i)
 676                                         continue;
 677                                 f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[j]);
 678                                 f32 nodemin = nodebox.MinEdge.dotProduct(dirs[j]);
 679                                 f32 playermax = playerbox.MaxEdge.dotProduct(dirs[j]);
 680                                 f32 playermin = playerbox.MinEdge.dotProduct(dirs[j]);
 681                                 if(!(nodemax - d > playermin && nodemin + d < playermax))
 682                                 {
 683                                         other_axes_overlap = false;
 684                                         break;
 685                                 }
 686                         }
 687
 688                         /*
 689                                 If this is a collision, revert the position in the main
 690                                 direction.
 691                         */
 692                         if(other_axes_overlap && main_axis_collides)
 693                         {
 694                                 //v3f old_speed = m_speed;
 695
 696                                 m_speed -= m_speed.dotProduct(dirs[i]) * dirs[i];
 697                                 position -= position.dotProduct(dirs[i]) * dirs[i];
 698                                 position += oldpos.dotProduct(dirs[i]) * dirs[i];
 699
 700                                 /*if(collision_info)
 701                                 {
 702                                         // Report fall collision
 703                                         if(old_speed.Y < m_speed.Y - 0.1)
 704                                         {
 705                                                 CollisionInfo info;
 706                                                 info.t = COLLISION_FALL;
 707                                                 info.speed = m_speed.Y - old_speed.Y;
 708                                                 collision_info->push_back(info);
 709                                         }
 710                                 }*/
 711                         }
 712
 713                 }
 714         } // xyz
 715
 716         /*
 717                 Check the nodes under the player to see from which node the
 718                 player is sneaking from, if any.
 719         */
 720         {
 721                 v3s16 pos_i_bottom = floatToInt(position - v3f(0,BS/2,0), BS);
 722                 v2f player_p2df(position.X, position.Z);
 723                 f32 min_distance_f = 100000.0*BS;
 724                 // If already seeking from some node, compare to it.
 725                 /*if(m_sneak_node_exists)
 726                 {
 727                         v3f sneaknode_pf = intToFloat(m_sneak_node, BS);
 728                         v2f sneaknode_p2df(sneaknode_pf.X, sneaknode_pf.Z);
 729                         f32 d_horiz_f = player_p2df.getDistanceFrom(sneaknode_p2df);
 730                         f32 d_vert_f = fabs(sneaknode_pf.Y + BS*0.5 - position.Y);
 731                         // Ignore if player is not on the same level (likely dropped)
 732                         if(d_vert_f < 0.15*BS)
 733                                 min_distance_f = d_horiz_f;
 734                 }*/
 735                 v3s16 new_sneak_node = m_sneak_node;
 736                 for(s16 x=-1; x<=1; x++)
 737                 for(s16 z=-1; z<=1; z++)
 738                 {
 739                         v3s16 p = pos_i_bottom + v3s16(x,0,z);
 740                         v3f pf = intToFloat(p, BS);
 741                         v2f node_p2df(pf.X, pf.Z);
 742                         f32 distance_f = player_p2df.getDistanceFrom(node_p2df);
 743                         f32 max_axis_distance_f = MYMAX(
 744                                         fabs(player_p2df.X-node_p2df.X),
 745                                         fabs(player_p2df.Y-node_p2df.Y));
 746
 747                         if(distance_f > min_distance_f ||
 748                                         max_axis_distance_f > 0.5*BS + sneak_max + 0.1*BS)
 749                                 continue;
 750
 751                         try{
 752                                 // The node to be sneaked on has to be walkable
 753                                 if(nodemgr->get(map.getNode(p)).walkable == false)
 754                                         continue;
 755                                 // And the node above it has to be nonwalkable
 756                                 if(nodemgr->get(map.getNode(p+v3s16(0,1,0))).walkable == true)
 757                                         continue;
 758                         }
 759                         catch(InvalidPositionException &e)
 760                         {
 761                                 continue;
 762                         }
 763
 764                         min_distance_f = distance_f;
 765                         new_sneak_node = p;
 766                 }
 767
 768                 bool sneak_node_found = (min_distance_f < 100000.0*BS*0.9);
 769
 770                 if(control.sneak && m_sneak_node_exists)
 771                 {
 772                         if(sneak_node_found)
 773                                 m_sneak_node = new_sneak_node;
 774                 }
 775                 else
 776                 {
 777                         m_sneak_node = new_sneak_node;
 778                         m_sneak_node_exists = sneak_node_found;
 779                 }
 780
 781                 /*
 782                         If sneaking, the player's collision box can be in air, so
 783                         this has to be set explicitly
 784                 */
 785                 if(sneak_node_found && control.sneak)
 786                         touching_ground = true;
 787         }
 788
 789         /*
 790                 Set new position
 791         */
 792         setPosition(position);
 793
 794         /*
 795                 Report collisions
 796         */
 797         if(collision_info)
 798         {
 799                 // Report fall collision
 800                 if(old_speed.Y < m_speed.Y - 0.1 && !standing_on_unloaded)
 801                 {
 802                         CollisionInfo info;
 803                         info.t = COLLISION_FALL;
 804                         info.speed = m_speed.Y - old_speed.Y;
 805                         collision_info->push_back(info);
 806                 }
 807         }
 808 }
 809
 810 void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d)
 811 {
 812         move(dtime, map, pos_max_d, NULL);
 813 }
 814
 815 void LocalPlayer::applyControl(float dtime)
 816 {
 817         // Clear stuff
 818         swimming_up = false;
 819
 820         // Random constants
 821         f32 walk_acceleration = 4.0 * BS;
 822         f32 walkspeed_max = 4.0 * BS;
 823
 824         setPitch(control.pitch);
 825         setYaw(control.yaw);
 826
 827         v3f move_direction = v3f(0,0,1);
 828         move_direction.rotateXZBy(getYaw());
 829
 830         v3f speed = v3f(0,0,0);
 831
 832         bool free_move = g_settings->getBool("free_move");
 833         bool fast_move = g_settings->getBool("fast_move");
 834         bool continuous_forward = g_settings->getBool("continuous_forward");
 835
 836         if(free_move || is_climbing)
 837         {
 838                 v3f speed = getSpeed();
 839                 speed.Y = 0;
 840                 setSpeed(speed);
 841         }
 842
 843         // Whether superspeed mode is used or not
 844         bool superspeed = false;
 845
 846         // If free movement and fast movement, always move fast
 847         if(free_move && fast_move)
 848                 superspeed = true;
 849
 850         // Auxiliary button 1 (E)
 851         if(control.aux1)
 852         {
 853                 if(free_move)
 854                 {
 855                         // In free movement mode, aux1 descends
 856                         v3f speed = getSpeed();
 857                         if(fast_move)
 858                                 speed.Y = -20*BS;
 859                         else
 860                                 speed.Y = -walkspeed_max;
 861                         setSpeed(speed);
 862                 }
 863                 else if(is_climbing)
 864                 {
 865                         v3f speed = getSpeed();
 866                         speed.Y = -3*BS;
 867                         setSpeed(speed);
 868                 }
 869                 else
 870                 {
 871                         // If not free movement but fast is allowed, aux1 is
 872                         // "Turbo button"
 873                         if(fast_move)
 874                                 superspeed = true;
 875                 }
 876         }
 877
 878         if(continuous_forward)
 879                 speed += move_direction;
 880
 881         if(control.up)
 882         {
 883                 if(continuous_forward)
 884                         superspeed = true;
 885                 else
 886                         speed += move_direction;
 887         }
 888         if(control.down)
 889         {
 890                 speed -= move_direction;
 891         }
 892         if(control.left)
 893         {
 894                 speed += move_direction.crossProduct(v3f(0,1,0));
 895         }
 896         if(control.right)
 897         {
 898                 speed += move_direction.crossProduct(v3f(0,-1,0));
 899         }
 900         if(control.jump)
 901         {
 902                 if(free_move)
 903                 {
 904                         v3f speed = getSpeed();
 905                         if(fast_move)
 906                                 speed.Y = 20*BS;
 907                         else
 908                                 speed.Y = walkspeed_max;
 909                         setSpeed(speed);
 910                 }
 911                 else if(touching_ground)
 912                 {
 913                         v3f speed = getSpeed();
 914                         /*
 915                                 NOTE: The d value in move() affects jump height by
 916                                 raising the height at which the jump speed is kept
 917                                 at its starting value
 918                         */
 919                         speed.Y = 6.5*BS;
 920                         setSpeed(speed);
 921                 }
 922                 // Use the oscillating value for getting out of water
 923                 // (so that the player doesn't fly on the surface)
 924                 else if(in_water)
 925                 {
 926                         v3f speed = getSpeed();
 927                         speed.Y = 1.5*BS;
 928                         setSpeed(speed);
 929                         swimming_up = true;
 930                 }
 931                 else if(is_climbing)
 932                 {
 933                         v3f speed = getSpeed();
 934                         speed.Y = 3*BS;
 935                         setSpeed(speed);
 936                 }
 937         }
 938
 939         // The speed of the player (Y is ignored)
 940         if(superspeed)
 941                 speed = speed.normalize() * walkspeed_max * 5.0;
 942         else if(control.sneak)
 943                 speed = speed.normalize() * walkspeed_max / 3.0;
 944         else
 945                 speed = speed.normalize() * walkspeed_max;
 946
 947         f32 inc = walk_acceleration * BS * dtime;
 948
 949         // Faster acceleration if fast and free movement
 950         if(free_move && fast_move)
 951                 inc = walk_acceleration * BS * dtime * 10;
 952
 953         // Accelerate to target speed with maximum increment
 954         accelerate(speed, inc);
 955 }
 956 #endif
 957