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