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