src/player.cpp

   1 /*
   2 Minetest-c55
   3 Copyright (C) 2010 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 /*
  21 (c) 2010 Perttu Ahola <celeron55@gmail.com>
  22 */
  23
  24 #include "player.h"
  25 #include "map.h"
  26 #include "connection.h"
  27 #include "constants.h"
  28 #include "utility.h"
  29
  30 Player::Player():
  31         touching_ground(false),
  32         in_water(false),
  33         in_water_stable(false),
  34         swimming_up(false),
  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 }
  48
  49 void Player::resetInventory()
  50 {
  51         inventory.clear();
  52         inventory.addList("main", PLAYER_INVENTORY_SIZE);
  53         inventory.addList("craft", 9);
  54         inventory.addList("craftresult", 1);
  55 }
  56
  57 // Y direction is ignored
  58 void Player::accelerate(v3f target_speed, f32 max_increase)
  59 {
  60         v3f d_wanted = target_speed - m_speed;
  61         d_wanted.Y = 0;
  62         f32 dl_wanted = d_wanted.getLength();
  63         f32 dl = dl_wanted;
  64         if(dl > max_increase)
  65                 dl = max_increase;
  66
  67         v3f d = d_wanted.normalize() * dl;
  68
  69         m_speed.X += d.X;
  70         m_speed.Z += d.Z;
  71         //m_speed += d;
  72
  73 #if 0 // old code
  74         if(m_speed.X < target_speed.X - max_increase)
  75                 m_speed.X += max_increase;
  76         else if(m_speed.X > target_speed.X + max_increase)
  77                 m_speed.X -= max_increase;
  78         else if(m_speed.X < target_speed.X)
  79                 m_speed.X = target_speed.X;
  80         else if(m_speed.X > target_speed.X)
  81                 m_speed.X = target_speed.X;
  82
  83         if(m_speed.Z < target_speed.Z - max_increase)
  84                 m_speed.Z += max_increase;
  85         else if(m_speed.Z > target_speed.Z + max_increase)
  86                 m_speed.Z -= max_increase;
  87         else if(m_speed.Z < target_speed.Z)
  88                 m_speed.Z = target_speed.Z;
  89         else if(m_speed.Z > target_speed.Z)
  90                 m_speed.Z = target_speed.Z;
  91 #endif
  92 }
  93
  94 void Player::serialize(std::ostream &os)
  95 {
  96         // Utilize a Settings object for storing values
  97         Settings args;
  98         args.setS32("version", 1);
  99         args.set("name", m_name);
 100         args.setFloat("pitch", m_pitch);
 101         args.setFloat("yaw", m_yaw);
 102         args.setV3F("position", m_position);
 103
 104         args.writeLines(os);
 105
 106         os<<"PlayerArgsEnd\n";
 107
 108         inventory.serialize(os);
 109 }
 110
 111 void Player::deSerialize(std::istream &is)
 112 {
 113         Settings args;
 114
 115         for(;;)
 116         {
 117                 if(is.eof())
 118                         throw SerializationError
 119                                         ("Player::deSerialize(): PlayerArgsEnd not found");
 120                 std::string line;
 121                 std::getline(is, line);
 122                 std::string trimmedline = trim(line);
 123                 if(trimmedline == "PlayerArgsEnd")
 124                         break;
 125                 args.parseConfigLine(line);
 126         }
 127
 128         //args.getS32("version");
 129         std::string name = args.get("name");
 130         updateName(name.c_str());
 131         m_pitch = args.getFloat("pitch");
 132         m_yaw = args.getFloat("yaw");
 133         m_position = args.getV3F("position");
 134
 135         inventory.deSerialize(is);
 136 }
 137
 138 /*
 139         RemotePlayer
 140 */
 141
 142 #ifndef SERVER
 143
 144 RemotePlayer::RemotePlayer(
 145                 scene::ISceneNode* parent,
 146                 IrrlichtDevice *device,
 147                 s32 id):
 148         scene::ISceneNode(parent, (device==NULL)?NULL:device->getSceneManager(), id),
 149         m_text(NULL)
 150 {
 151         m_box = core::aabbox3d<f32>(-BS/2,0,-BS/2,BS/2,BS*2,BS/2);
 152
 153         if(parent != NULL && device != NULL)
 154         {
 155                 // ISceneNode stores a member called SceneManager
 156                 scene::ISceneManager* mgr = SceneManager;
 157                 video::IVideoDriver* driver = mgr->getVideoDriver();
 158                 gui::IGUIEnvironment* gui = device->getGUIEnvironment();
 159
 160                 // Add a text node for showing the name
 161                 wchar_t wname[1] = {0};
 162                 m_text = mgr->addTextSceneNode(gui->getBuiltInFont(),
 163                                 wname, video::SColor(255,255,255,255), this);
 164                 m_text->setPosition(v3f(0, (f32)BS*2.1, 0));
 165
 166                 // Attach a simple mesh to the player for showing an image
 167                 scene::SMesh *mesh = new scene::SMesh();
 168                 { // Front
 169                 scene::IMeshBuffer *buf = new scene::SMeshBuffer();
 170                 video::SColor c(255,255,255,255);
 171                 video::S3DVertex vertices[4] =
 172                 {
 173                         video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
 174                         video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
 175                         video::S3DVertex(BS/2,BS*2,0, 0,0,0, c, 1,0),
 176                         video::S3DVertex(-BS/2,BS*2,0, 0,0,0, c, 0,0),
 177                 };
 178                 u16 indices[] = {0,1,2,2,3,0};
 179                 buf->append(vertices, 4, indices, 6);
 180                 // Set material
 181                 buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
 182                 //buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
 183                 buf->getMaterial().setTexture(0, driver->getTexture(porting::getDataPath("player.png").c_str()));
 184                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
 185                 buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
 186                 //buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 187                 buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 188                 // Add to mesh
 189                 mesh->addMeshBuffer(buf);
 190                 buf->drop();
 191                 }
 192                 { // Back
 193                 scene::IMeshBuffer *buf = new scene::SMeshBuffer();
 194                 video::SColor c(255,255,255,255);
 195                 video::S3DVertex vertices[4] =
 196                 {
 197                         video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
 198                         video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
 199                         video::S3DVertex(-BS/2,BS*2,0, 0,0,0, c, 0,0),
 200                         video::S3DVertex(BS/2,BS*2,0, 0,0,0, c, 1,0),
 201                 };
 202                 u16 indices[] = {0,1,2,2,3,0};
 203                 buf->append(vertices, 4, indices, 6);
 204                 // Set material
 205                 buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
 206                 //buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
 207                 buf->getMaterial().setTexture(0, driver->getTexture(porting::getDataPath("player_back.png").c_str()));
 208                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
 209                 buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
 210                 buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 211                 // Add to mesh
 212                 mesh->addMeshBuffer(buf);
 213                 buf->drop();
 214                 }
 215                 m_node = mgr->addMeshSceneNode(mesh, this);
 216                 mesh->drop();
 217                 m_node->setPosition(v3f(0,0,0));
 218         }
 219 }
 220
 221 RemotePlayer::~RemotePlayer()
 222 {
 223         if(SceneManager != NULL)
 224                 ISceneNode::remove();
 225 }
 226
 227 void RemotePlayer::updateName(const char *name)
 228 {
 229         Player::updateName(name);
 230         if(m_text != NULL)
 231         {
 232                 wchar_t wname[PLAYERNAME_SIZE];
 233                 mbstowcs(wname, m_name, strlen(m_name)+1);
 234                 m_text->setText(wname);
 235         }
 236 }
 237
 238 void RemotePlayer::move(f32 dtime, Map &map, f32 pos_max_d)
 239 {
 240         m_pos_animation_time_counter += dtime;
 241         m_pos_animation_counter += dtime;
 242         v3f movevector = m_position - m_oldpos;
 243         f32 moveratio;
 244         if(m_pos_animation_time < 0.001)
 245                 moveratio = 1.0;
 246         else
 247                 moveratio = m_pos_animation_counter / m_pos_animation_time;
 248         if(moveratio > 1.5)
 249                 moveratio = 1.5;
 250         m_showpos = m_oldpos + movevector * moveratio;
 251
 252         ISceneNode::setPosition(m_showpos);
 253 }
 254
 255 #endif
 256
 257 #ifndef SERVER
 258 /*
 259         LocalPlayer
 260 */
 261
 262 LocalPlayer::LocalPlayer():
 263         m_sneak_node(32767,32767,32767),
 264         m_sneak_node_exists(false)
 265 {
 266 }
 267
 268 LocalPlayer::~LocalPlayer()
 269 {
 270 }
 271
 272 void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d)
 273 {
 274         v3f position = getPosition();
 275         v3f oldpos = position;
 276         v3s16 oldpos_i = floatToInt(oldpos);
 277
 278         /*std::cout<<"oldpos_i=("<<oldpos_i.X<<","<<oldpos_i.Y<<","
 279                         <<oldpos_i.Z<<")"<<std::endl;*/
 280
 281         /*
 282                 Calculate new position
 283         */
 284         position += m_speed * dtime;
 285
 286         // Skip collision detection if a special movement mode is used
 287         bool free_move = g_settings.getBool("free_move");
 288         if(free_move)
 289         {
 290                 setPosition(position);
 291                 return;
 292         }
 293
 294         /*
 295                 Collision detection
 296         */
 297
 298         // Player position in nodes
 299         v3s16 pos_i = floatToInt(position);
 300
 301         /*
 302                 Check if player is in water (the oscillating value)
 303         */
 304         try{
 305                 // If in water, the threshold of coming out is at higher y
 306                 if(in_water)
 307                 {
 308                         v3s16 pp = floatToInt(position + v3f(0,BS*0.1,0));
 309                         in_water = content_liquid(map.getNode(pp).d);
 310                 }
 311                 // If not in water, the threshold of going in is at lower y
 312                 else
 313                 {
 314                         v3s16 pp = floatToInt(position + v3f(0,BS*0.5,0));
 315                         in_water = content_liquid(map.getNode(pp).d);
 316                 }
 317         }
 318         catch(InvalidPositionException &e)
 319         {
 320                 in_water = false;
 321         }
 322
 323         /*
 324                 Check if player is in water (the stable value)
 325         */
 326         try{
 327                 v3s16 pp = floatToInt(position + v3f(0,0,0));
 328                 in_water_stable = content_liquid(map.getNode(pp).d);
 329         }
 330         catch(InvalidPositionException &e)
 331         {
 332                 in_water_stable = false;
 333         }
 334
 335         /*
 336                 Collision uncertainty radius
 337                 Make it a bit larger than the maximum distance of movement
 338         */
 339         //f32 d = pos_max_d * 1.1;
 340         // A fairly large value in here makes moving smoother
 341         f32 d = 0.15*BS;
 342
 343         // This should always apply, otherwise there are glitches
 344         assert(d > pos_max_d);
 345
 346         float player_radius = BS*0.35;
 347         float player_height = BS*1.7;
 348
 349         // Maximum distance over border for sneaking
 350         f32 sneak_max = BS*0.4;
 351
 352         /*
 353                 If sneaking, player has larger collision radius to keep from
 354                 falling
 355         */
 356         /*if(control.sneak)
 357                 player_radius = sneak_max + d*1.1;*/
 358
 359         /*
 360                 If sneaking, keep in range from the last walked node and don't
 361                 fall off from it
 362         */
 363         if(control.sneak && m_sneak_node_exists)
 364         {
 365                 f32 maxd = 0.5*BS + sneak_max;
 366                 v3f lwn_f = intToFloat(m_sneak_node);
 367                 position.X = rangelim(position.X, lwn_f.X-maxd, lwn_f.X+maxd);
 368                 position.Z = rangelim(position.Z, lwn_f.Z-maxd, lwn_f.Z+maxd);
 369
 370                 f32 min_y = lwn_f.Y + 0.5*BS;
 371                 if(position.Y < min_y)
 372                 {
 373                         position.Y = min_y;
 374                         if(m_speed.Y < 0)
 375                                 m_speed.Y = 0;
 376                 }
 377         }
 378
 379         /*
 380                 Calculate player collision box (new and old)
 381         */
 382         core::aabbox3d<f32> playerbox(
 383                 position.X - player_radius,
 384                 position.Y - 0.0,
 385                 position.Z - player_radius,
 386                 position.X + player_radius,
 387                 position.Y + player_height,
 388                 position.Z + player_radius
 389         );
 390         core::aabbox3d<f32> playerbox_old(
 391                 oldpos.X - player_radius,
 392                 oldpos.Y - 0.0,
 393                 oldpos.Z - player_radius,
 394                 oldpos.X + player_radius,
 395                 oldpos.Y + player_height,
 396                 oldpos.Z + player_radius
 397         );
 398
 399         /*
 400                 If the player's feet touch the topside of any node, this is
 401                 set to true.
 402
 403                 Player is allowed to jump when this is true.
 404         */
 405         touching_ground = false;
 406
 407         /*std::cout<<"Checking collisions for ("
 408                         <<oldpos_i.X<<","<<oldpos_i.Y<<","<<oldpos_i.Z
 409                         <<") -> ("
 410                         <<pos_i.X<<","<<pos_i.Y<<","<<pos_i.Z
 411                         <<"):"<<std::endl;*/
 412
 413         /*
 414                 Go through every node around the player
 415         */
 416         for(s16 y = oldpos_i.Y - 1; y <= oldpos_i.Y + 2; y++)
 417         for(s16 z = oldpos_i.Z - 1; z <= oldpos_i.Z + 1; z++)
 418         for(s16 x = oldpos_i.X - 1; x <= oldpos_i.X + 1; x++)
 419         {
 420                 try{
 421                         // Player collides into walkable nodes
 422                         if(content_walkable(map.getNode(v3s16(x,y,z)).d) == false)
 423                                 continue;
 424                 }
 425                 catch(InvalidPositionException &e)
 426                 {
 427                         // Doing nothing here will block the player from
 428                         // walking over map borders
 429                 }
 430
 431                 core::aabbox3d<f32> nodebox = Map::getNodeBox(
 432                                 v3s16(x,y,z));
 433
 434                 /*
 435                         See if the player is touching ground.
 436
 437                         Player touches ground if player's minimum Y is near node's
 438                         maximum Y and player's X-Z-area overlaps with the node's
 439                         X-Z-area.
 440
 441                         Use 0.15*BS so that it is easier to get on a node.
 442                 */
 443                 if(
 444                                 //fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < d
 445                                 fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < 0.15*BS
 446                                 && nodebox.MaxEdge.X-d > playerbox.MinEdge.X
 447                                 && nodebox.MinEdge.X+d < playerbox.MaxEdge.X
 448                                 && nodebox.MaxEdge.Z-d > playerbox.MinEdge.Z
 449                                 && nodebox.MinEdge.Z+d < playerbox.MaxEdge.Z
 450                 ){
 451                         touching_ground = true;
 452                 }
 453
 454                 // If player doesn't intersect with node, ignore node.
 455                 if(playerbox.intersectsWithBox(nodebox) == false)
 456                         continue;
 457
 458                 /*
 459                         Go through every axis
 460                 */
 461                 v3f dirs[3] = {
 462                         v3f(0,0,1), // back-front
 463                         v3f(0,1,0), // top-bottom
 464                         v3f(1,0,0), // right-left
 465                 };
 466                 for(u16 i=0; i<3; i++)
 467                 {
 468                         /*
 469                                 Calculate values along the axis
 470                         */
 471                         f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[i]);
 472                         f32 nodemin = nodebox.MinEdge.dotProduct(dirs[i]);
 473                         f32 playermax = playerbox.MaxEdge.dotProduct(dirs[i]);
 474                         f32 playermin = playerbox.MinEdge.dotProduct(dirs[i]);
 475                         f32 playermax_old = playerbox_old.MaxEdge.dotProduct(dirs[i]);
 476                         f32 playermin_old = playerbox_old.MinEdge.dotProduct(dirs[i]);
 477
 478                         /*
 479                                 Check collision for the axis.
 480                                 Collision happens when player is going through a surface.
 481                         */
 482                         /*f32 neg_d = d;
 483                         f32 pos_d = d;
 484                         // Make it easier to get on top of a node
 485                         if(i == 1)
 486                                 neg_d = 0.15*BS;
 487                         bool negative_axis_collides =
 488                                 (nodemax > playermin && nodemax <= playermin_old + neg_d
 489                                         && m_speed.dotProduct(dirs[i]) < 0);
 490                         bool positive_axis_collides =
 491                                 (nodemin < playermax && nodemin >= playermax_old - pos_d
 492                                         && m_speed.dotProduct(dirs[i]) > 0);*/
 493                         bool negative_axis_collides =
 494                                 (nodemax > playermin && nodemax <= playermin_old + d
 495                                         && m_speed.dotProduct(dirs[i]) < 0);
 496                         bool positive_axis_collides =
 497                                 (nodemin < playermax && nodemin >= playermax_old - d
 498                                         && m_speed.dotProduct(dirs[i]) > 0);
 499                         bool main_axis_collides =
 500                                         negative_axis_collides || positive_axis_collides;
 501
 502                         /*
 503                                 Check overlap of player and node in other axes
 504                         */
 505                         bool other_axes_overlap = true;
 506                         for(u16 j=0; j<3; j++)
 507                         {
 508                                 if(j == i)
 509                                         continue;
 510                                 f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[j]);
 511                                 f32 nodemin = nodebox.MinEdge.dotProduct(dirs[j]);
 512                                 f32 playermax = playerbox.MaxEdge.dotProduct(dirs[j]);
 513                                 f32 playermin = playerbox.MinEdge.dotProduct(dirs[j]);
 514                                 if(!(nodemax - d > playermin && nodemin + d < playermax))
 515                                 {
 516                                         other_axes_overlap = false;
 517                                         break;
 518                                 }
 519                         }
 520
 521                         /*
 522                                 If this is a collision, revert the position in the main
 523                                 direction.
 524                         */
 525                         if(other_axes_overlap && main_axis_collides)
 526                         {
 527                                 m_speed -= m_speed.dotProduct(dirs[i]) * dirs[i];
 528                                 position -= position.dotProduct(dirs[i]) * dirs[i];
 529                                 position += oldpos.dotProduct(dirs[i]) * dirs[i];
 530                         }
 531
 532                 }
 533         } // xyz
 534
 535         /*
 536                 Check the nodes under the player to see from which node the
 537                 player is sneaking from, if any.
 538         */
 539         {
 540                 v3s16 pos_i_bottom = floatToInt(position - v3f(0,BS/2,0));
 541                 v2f player_p2df(position.X, position.Z);
 542                 f32 min_distance_f = 100000.0*BS;
 543                 // If already seeking from some node, compare to it.
 544                 /*if(m_sneak_node_exists)
 545                 {
 546                         v3f sneaknode_pf = intToFloat(m_sneak_node);
 547                         v2f sneaknode_p2df(sneaknode_pf.X, sneaknode_pf.Z);
 548                         f32 d_horiz_f = player_p2df.getDistanceFrom(sneaknode_p2df);
 549                         f32 d_vert_f = fabs(sneaknode_pf.Y + BS*0.5 - position.Y);
 550                         // Ignore if player is not on the same level (likely dropped)
 551                         if(d_vert_f < 0.15*BS)
 552                                 min_distance_f = d_horiz_f;
 553                 }*/
 554                 v3s16 new_sneak_node = m_sneak_node;
 555                 for(s16 x=-1; x<=1; x++)
 556                 for(s16 z=-1; z<=1; z++)
 557                 {
 558                         v3s16 p = pos_i_bottom + v3s16(x,0,z);
 559                         v3f pf = intToFloat(p);
 560                         v2f node_p2df(pf.X, pf.Z);
 561                         f32 distance_f = player_p2df.getDistanceFrom(node_p2df);
 562                         f32 max_axis_distance_f = MYMAX(
 563                                         fabs(player_p2df.X-node_p2df.X),
 564                                         fabs(player_p2df.Y-node_p2df.Y));
 565
 566                         if(distance_f > min_distance_f ||
 567                                         max_axis_distance_f > 0.5*BS + sneak_max + 0.1*BS)
 568                                 continue;
 569
 570                         try{
 571                                 // The node to be sneaked on has to be walkable
 572                                 if(content_walkable(map.getNode(p).d) == false)
 573                                         continue;
 574                                 // And the node above it has to be nonwalkable
 575                                 if(content_walkable(map.getNode(p+v3s16(0,1,0)).d) == true)
 576                                         continue;
 577                         }
 578                         catch(InvalidPositionException &e)
 579                         {
 580                                 continue;
 581                         }
 582
 583                         min_distance_f = distance_f;
 584                         new_sneak_node = p;
 585                 }
 586
 587                 bool sneak_node_found = (min_distance_f < 100000.0*BS*0.9);
 588
 589                 if(control.sneak && m_sneak_node_exists)
 590                 {
 591                         if(sneak_node_found)
 592                                 m_sneak_node = new_sneak_node;
 593                 }
 594                 else
 595                 {
 596                         m_sneak_node = new_sneak_node;
 597                         m_sneak_node_exists = sneak_node_found;
 598                 }
 599
 600                 /*
 601                         If sneaking, the player's collision box can be in air, so
 602                         this has to be set explicitly
 603                 */
 604                 if(sneak_node_found && control.sneak)
 605                         touching_ground = true;
 606         }
 607
 608         /*
 609                 Set new position
 610         */
 611         setPosition(position);
 612 }
 613
 614 void LocalPlayer::applyControl(float dtime)
 615 {
 616         // Clear stuff
 617         swimming_up = false;
 618
 619         // Random constants
 620         f32 walk_acceleration = 4.0 * BS;
 621         f32 walkspeed_max = 4.0 * BS;
 622
 623         setPitch(control.pitch);
 624         setYaw(control.yaw);
 625
 626         v3f move_direction = v3f(0,0,1);
 627         move_direction.rotateXZBy(getYaw());
 628
 629         v3f speed = v3f(0,0,0);
 630
 631         bool free_move = g_settings.getBool("free_move");
 632         bool fast_move = g_settings.getBool("fast_move");
 633         bool continuous_forward = g_settings.getBool("continuous_forward");
 634
 635         if(free_move)
 636         {
 637                 v3f speed = getSpeed();
 638                 speed.Y = 0;
 639                 setSpeed(speed);
 640         }
 641
 642         // Whether superspeed mode is used or not
 643         bool superspeed = false;
 644
 645         // If free movement and fast movement, always move fast
 646         if(free_move && fast_move)
 647                 superspeed = true;
 648
 649         // Auxiliary button 1 (E)
 650         if(control.aux1)
 651         {
 652                 if(free_move)
 653                 {
 654                         // In free movement mode, aux1 descends
 655                         v3f speed = getSpeed();
 656                         if(fast_move)
 657                                 speed.Y = -20*BS;
 658                         else
 659                                 speed.Y = -walkspeed_max;
 660                         setSpeed(speed);
 661                 }
 662                 else
 663                 {
 664                         // If not free movement but fast is allowed, aux1 is
 665                         // "Turbo button"
 666                         if(fast_move)
 667                                 superspeed = true;
 668                 }
 669         }
 670
 671         if(continuous_forward)
 672                 speed += move_direction;
 673
 674         if(control.up)
 675         {
 676                 if(continuous_forward)
 677                         superspeed = true;
 678                 else
 679                         speed += move_direction;
 680         }
 681         if(control.down)
 682         {
 683                 speed -= move_direction;
 684         }
 685         if(control.left)
 686         {
 687                 speed += move_direction.crossProduct(v3f(0,1,0));
 688         }
 689         if(control.right)
 690         {
 691                 speed += move_direction.crossProduct(v3f(0,-1,0));
 692         }
 693         if(control.jump)
 694         {
 695                 if(free_move)
 696                 {
 697                         v3f speed = getSpeed();
 698                         if(fast_move)
 699                                 speed.Y = 20*BS;
 700                         else
 701                                 speed.Y = walkspeed_max;
 702                         setSpeed(speed);
 703                 }
 704                 else if(touching_ground)
 705                 {
 706                         v3f speed = getSpeed();
 707                         /*
 708                                 NOTE: The d value in move() affects jump height by
 709                                 raising the height at which the jump speed is kept
 710                                 at its starting value
 711                         */
 712                         speed.Y = 6.5*BS;
 713                         setSpeed(speed);
 714                 }
 715                 // Use the oscillating value for getting out of water
 716                 // (so that the player doesn't fly on the surface)
 717                 else if(in_water)
 718                 {
 719                         v3f speed = getSpeed();
 720                         speed.Y = 1.5*BS;
 721                         setSpeed(speed);
 722                         swimming_up = true;
 723                 }
 724         }
 725
 726         // The speed of the player (Y is ignored)
 727         if(superspeed)
 728                 speed = speed.normalize() * walkspeed_max * 5.0;
 729         else if(control.sneak)
 730                 speed = speed.normalize() * walkspeed_max / 3.0;
 731         else
 732                 speed = speed.normalize() * walkspeed_max;
 733
 734         f32 inc = walk_acceleration * BS * dtime;
 735
 736         // Faster acceleration if fast and free movement
 737         if(free_move && fast_move)
 738                 inc = walk_acceleration * BS * dtime * 10;
 739
 740         // Accelerate to target speed with maximum increment
 741         accelerate(speed, inc);
 742 }
 743 #endif
 744