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 #ifndef SERVER
 179 /*
 180         LocalPlayer
 181 */
 182
 183 LocalPlayer::LocalPlayer(IGameDef *gamedef):
 184         Player(gamedef),
 185         m_sneak_node(32767,32767,32767),
 186         m_sneak_node_exists(false)
 187 {
 188         // Initialize hp to 0, so that no hearts will be shown if server
 189         // doesn't support health points
 190         hp = 0;
 191 }
 192
 193 LocalPlayer::~LocalPlayer()
 194 {
 195 }
 196
 197 void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d,
 198                 core::list<CollisionInfo> *collision_info)
 199 {
 200         INodeDefManager *nodemgr = m_gamedef->ndef();
 201
 202         v3f position = getPosition();
 203         v3f oldpos = position;
 204         v3s16 oldpos_i = floatToInt(oldpos, BS);
 205
 206         v3f old_speed = m_speed;
 207
 208         /*std::cout<<"oldpos_i=("<<oldpos_i.X<<","<<oldpos_i.Y<<","
 209                         <<oldpos_i.Z<<")"<<std::endl;*/
 210
 211         /*
 212                 Calculate new position
 213         */
 214         position += m_speed * dtime;
 215
 216         // Skip collision detection if a special movement mode is used
 217         bool free_move = g_settings->getBool("free_move");
 218         if(free_move)
 219         {
 220                 setPosition(position);
 221                 return;
 222         }
 223
 224         /*
 225                 Collision detection
 226         */
 227
 228         // Player position in nodes
 229         v3s16 pos_i = floatToInt(position, BS);
 230
 231         /*
 232                 Check if player is in water (the oscillating value)
 233         */
 234         try{
 235                 // If in water, the threshold of coming out is at higher y
 236                 if(in_water)
 237                 {
 238                         v3s16 pp = floatToInt(position + v3f(0,BS*0.1,0), BS);
 239                         in_water = nodemgr->get(map.getNode(pp).getContent()).isLiquid();
 240                 }
 241                 // If not in water, the threshold of going in is at lower y
 242                 else
 243                 {
 244                         v3s16 pp = floatToInt(position + v3f(0,BS*0.5,0), BS);
 245                         in_water = nodemgr->get(map.getNode(pp).getContent()).isLiquid();
 246                 }
 247         }
 248         catch(InvalidPositionException &e)
 249         {
 250                 in_water = false;
 251         }
 252
 253         /*
 254                 Check if player is in water (the stable value)
 255         */
 256         try{
 257                 v3s16 pp = floatToInt(position + v3f(0,0,0), BS);
 258                 in_water_stable = nodemgr->get(map.getNode(pp).getContent()).isLiquid();
 259         }
 260         catch(InvalidPositionException &e)
 261         {
 262                 in_water_stable = false;
 263         }
 264
 265         /*
 266                 Check if player is climbing
 267         */
 268
 269         try {
 270                 v3s16 pp = floatToInt(position + v3f(0,0.5*BS,0), BS);
 271                 v3s16 pp2 = floatToInt(position + v3f(0,-0.2*BS,0), BS);
 272                 is_climbing = ((nodemgr->get(map.getNode(pp).getContent()).climbable ||
 273                 nodemgr->get(map.getNode(pp2).getContent()).climbable) && !free_move);
 274         }
 275         catch(InvalidPositionException &e)
 276         {
 277                 is_climbing = false;
 278         }
 279
 280         /*
 281                 Collision uncertainty radius
 282                 Make it a bit larger than the maximum distance of movement
 283         */
 284         //f32 d = pos_max_d * 1.1;
 285         // A fairly large value in here makes moving smoother
 286         f32 d = 0.15*BS;
 287
 288         // This should always apply, otherwise there are glitches
 289         assert(d > pos_max_d);
 290
 291         float player_radius = BS*0.35;
 292         float player_height = BS*1.7;
 293
 294         // Maximum distance over border for sneaking
 295         f32 sneak_max = BS*0.4;
 296
 297         /*
 298                 If sneaking, player has larger collision radius to keep from
 299                 falling
 300         */
 301         /*if(control.sneak)
 302                 player_radius = sneak_max + d*1.1;*/
 303
 304         /*
 305                 If sneaking, keep in range from the last walked node and don't
 306                 fall off from it
 307         */
 308         if(control.sneak && m_sneak_node_exists)
 309         {
 310                 f32 maxd = 0.5*BS + sneak_max;
 311                 v3f lwn_f = intToFloat(m_sneak_node, BS);
 312                 position.X = rangelim(position.X, lwn_f.X-maxd, lwn_f.X+maxd);
 313                 position.Z = rangelim(position.Z, lwn_f.Z-maxd, lwn_f.Z+maxd);
 314
 315                 f32 min_y = lwn_f.Y + 0.5*BS;
 316                 if(position.Y < min_y)
 317                 {
 318                         position.Y = min_y;
 319
 320                         //v3f old_speed = m_speed;
 321
 322                         if(m_speed.Y < 0)
 323                                 m_speed.Y = 0;
 324
 325                         /*if(collision_info)
 326                         {
 327                                 // Report fall collision
 328                                 if(old_speed.Y < m_speed.Y - 0.1)
 329                                 {
 330                                         CollisionInfo info;
 331                                         info.t = COLLISION_FALL;
 332                                         info.speed = m_speed.Y - old_speed.Y;
 333                                         collision_info->push_back(info);
 334                                 }
 335                         }*/
 336                 }
 337         }
 338
 339         /*
 340                 Calculate player collision box (new and old)
 341         */
 342         core::aabbox3d<f32> playerbox(
 343                 position.X - player_radius,
 344                 position.Y - 0.0,
 345                 position.Z - player_radius,
 346                 position.X + player_radius,
 347                 position.Y + player_height,
 348                 position.Z + player_radius
 349         );
 350         core::aabbox3d<f32> playerbox_old(
 351                 oldpos.X - player_radius,
 352                 oldpos.Y - 0.0,
 353                 oldpos.Z - player_radius,
 354                 oldpos.X + player_radius,
 355                 oldpos.Y + player_height,
 356                 oldpos.Z + player_radius
 357         );
 358
 359         /*
 360                 If the player's feet touch the topside of any node, this is
 361                 set to true.
 362
 363                 Player is allowed to jump when this is true.
 364         */
 365         touching_ground = false;
 366
 367         /*std::cout<<"Checking collisions for ("
 368                         <<oldpos_i.X<<","<<oldpos_i.Y<<","<<oldpos_i.Z
 369                         <<") -> ("
 370                         <<pos_i.X<<","<<pos_i.Y<<","<<pos_i.Z
 371                         <<"):"<<std::endl;*/
 372
 373         bool standing_on_unloaded = false;
 374
 375         /*
 376                 Go through every node around the player
 377         */
 378         for(s16 y = oldpos_i.Y - 1; y <= oldpos_i.Y + 2; y++)
 379         for(s16 z = oldpos_i.Z - 1; z <= oldpos_i.Z + 1; z++)
 380         for(s16 x = oldpos_i.X - 1; x <= oldpos_i.X + 1; x++)
 381         {
 382                 bool is_unloaded = false;
 383                 try{
 384                         // Player collides into walkable nodes
 385                         if(nodemgr->get(map.getNode(v3s16(x,y,z))).walkable == false)
 386                                 continue;
 387                 }
 388                 catch(InvalidPositionException &e)
 389                 {
 390                         is_unloaded = true;
 391                         // Doing nothing here will block the player from
 392                         // walking over map borders
 393                 }
 394
 395                 core::aabbox3d<f32> nodebox = getNodeBox(v3s16(x,y,z), BS);
 396
 397                 /*
 398                         See if the player is touching ground.
 399
 400                         Player touches ground if player's minimum Y is near node's
 401                         maximum Y and player's X-Z-area overlaps with the node's
 402                         X-Z-area.
 403
 404                         Use 0.15*BS so that it is easier to get on a node.
 405                 */
 406                 if(
 407                                 //fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < d
 408                                 fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < 0.15*BS
 409                                 && nodebox.MaxEdge.X-d > playerbox.MinEdge.X
 410                                 && nodebox.MinEdge.X+d < playerbox.MaxEdge.X
 411                                 && nodebox.MaxEdge.Z-d > playerbox.MinEdge.Z
 412                                 && nodebox.MinEdge.Z+d < playerbox.MaxEdge.Z
 413                 ){
 414                         touching_ground = true;
 415                         if(is_unloaded)
 416                                 standing_on_unloaded = true;
 417                 }
 418
 419                 // If player doesn't intersect with node, ignore node.
 420                 if(playerbox.intersectsWithBox(nodebox) == false)
 421                         continue;
 422
 423                 /*
 424                         Go through every axis
 425                 */
 426                 v3f dirs[3] = {
 427                         v3f(0,0,1), // back-front
 428                         v3f(0,1,0), // top-bottom
 429                         v3f(1,0,0), // right-left
 430                 };
 431                 for(u16 i=0; i<3; i++)
 432                 {
 433                         /*
 434                                 Calculate values along the axis
 435                         */
 436                         f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[i]);
 437                         f32 nodemin = nodebox.MinEdge.dotProduct(dirs[i]);
 438                         f32 playermax = playerbox.MaxEdge.dotProduct(dirs[i]);
 439                         f32 playermin = playerbox.MinEdge.dotProduct(dirs[i]);
 440                         f32 playermax_old = playerbox_old.MaxEdge.dotProduct(dirs[i]);
 441                         f32 playermin_old = playerbox_old.MinEdge.dotProduct(dirs[i]);
 442
 443                         /*
 444                                 Check collision for the axis.
 445                                 Collision happens when player is going through a surface.
 446                         */
 447                         /*f32 neg_d = d;
 448                         f32 pos_d = d;
 449                         // Make it easier to get on top of a node
 450                         if(i == 1)
 451                                 neg_d = 0.15*BS;
 452                         bool negative_axis_collides =
 453                                 (nodemax > playermin && nodemax <= playermin_old + neg_d
 454                                         && m_speed.dotProduct(dirs[i]) < 0);
 455                         bool positive_axis_collides =
 456                                 (nodemin < playermax && nodemin >= playermax_old - pos_d
 457                                         && m_speed.dotProduct(dirs[i]) > 0);*/
 458                         bool negative_axis_collides =
 459                                 (nodemax > playermin && nodemax <= playermin_old + d
 460                                         && m_speed.dotProduct(dirs[i]) < 0);
 461                         bool positive_axis_collides =
 462                                 (nodemin < playermax && nodemin >= playermax_old - d
 463                                         && m_speed.dotProduct(dirs[i]) > 0);
 464                         bool main_axis_collides =
 465                                         negative_axis_collides || positive_axis_collides;
 466
 467                         /*
 468                                 Check overlap of player and node in other axes
 469                         */
 470                         bool other_axes_overlap = true;
 471                         for(u16 j=0; j<3; j++)
 472                         {
 473                                 if(j == i)
 474                                         continue;
 475                                 f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[j]);
 476                                 f32 nodemin = nodebox.MinEdge.dotProduct(dirs[j]);
 477                                 f32 playermax = playerbox.MaxEdge.dotProduct(dirs[j]);
 478                                 f32 playermin = playerbox.MinEdge.dotProduct(dirs[j]);
 479                                 if(!(nodemax - d > playermin && nodemin + d < playermax))
 480                                 {
 481                                         other_axes_overlap = false;
 482                                         break;
 483                                 }
 484                         }
 485
 486                         /*
 487                                 If this is a collision, revert the position in the main
 488                                 direction.
 489                         */
 490                         if(other_axes_overlap && main_axis_collides)
 491                         {
 492                                 //v3f old_speed = m_speed;
 493
 494                                 m_speed -= m_speed.dotProduct(dirs[i]) * dirs[i];
 495                                 position -= position.dotProduct(dirs[i]) * dirs[i];
 496                                 position += oldpos.dotProduct(dirs[i]) * dirs[i];
 497
 498                                 /*if(collision_info)
 499                                 {
 500                                         // Report fall collision
 501                                         if(old_speed.Y < m_speed.Y - 0.1)
 502                                         {
 503                                                 CollisionInfo info;
 504                                                 info.t = COLLISION_FALL;
 505                                                 info.speed = m_speed.Y - old_speed.Y;
 506                                                 collision_info->push_back(info);
 507                                         }
 508                                 }*/
 509                         }
 510
 511                 }
 512         } // xyz
 513
 514         /*
 515                 Check the nodes under the player to see from which node the
 516                 player is sneaking from, if any.
 517         */
 518         {
 519                 v3s16 pos_i_bottom = floatToInt(position - v3f(0,BS/2,0), BS);
 520                 v2f player_p2df(position.X, position.Z);
 521                 f32 min_distance_f = 100000.0*BS;
 522                 // If already seeking from some node, compare to it.
 523                 /*if(m_sneak_node_exists)
 524                 {
 525                         v3f sneaknode_pf = intToFloat(m_sneak_node, BS);
 526                         v2f sneaknode_p2df(sneaknode_pf.X, sneaknode_pf.Z);
 527                         f32 d_horiz_f = player_p2df.getDistanceFrom(sneaknode_p2df);
 528                         f32 d_vert_f = fabs(sneaknode_pf.Y + BS*0.5 - position.Y);
 529                         // Ignore if player is not on the same level (likely dropped)
 530                         if(d_vert_f < 0.15*BS)
 531                                 min_distance_f = d_horiz_f;
 532                 }*/
 533                 v3s16 new_sneak_node = m_sneak_node;
 534                 for(s16 x=-1; x<=1; x++)
 535                 for(s16 z=-1; z<=1; z++)
 536                 {
 537                         v3s16 p = pos_i_bottom + v3s16(x,0,z);
 538                         v3f pf = intToFloat(p, BS);
 539                         v2f node_p2df(pf.X, pf.Z);
 540                         f32 distance_f = player_p2df.getDistanceFrom(node_p2df);
 541                         f32 max_axis_distance_f = MYMAX(
 542                                         fabs(player_p2df.X-node_p2df.X),
 543                                         fabs(player_p2df.Y-node_p2df.Y));
 544
 545                         if(distance_f > min_distance_f ||
 546                                         max_axis_distance_f > 0.5*BS + sneak_max + 0.1*BS)
 547                                 continue;
 548
 549                         try{
 550                                 // The node to be sneaked on has to be walkable
 551                                 if(nodemgr->get(map.getNode(p)).walkable == false)
 552                                         continue;
 553                                 // And the node above it has to be nonwalkable
 554                                 if(nodemgr->get(map.getNode(p+v3s16(0,1,0))).walkable == true)
 555                                         continue;
 556                         }
 557                         catch(InvalidPositionException &e)
 558                         {
 559                                 continue;
 560                         }
 561
 562                         min_distance_f = distance_f;
 563                         new_sneak_node = p;
 564                 }
 565
 566                 bool sneak_node_found = (min_distance_f < 100000.0*BS*0.9);
 567
 568                 if(control.sneak && m_sneak_node_exists)
 569                 {
 570                         if(sneak_node_found)
 571                                 m_sneak_node = new_sneak_node;
 572                 }
 573                 else
 574                 {
 575                         m_sneak_node = new_sneak_node;
 576                         m_sneak_node_exists = sneak_node_found;
 577                 }
 578
 579                 /*
 580                         If sneaking, the player's collision box can be in air, so
 581                         this has to be set explicitly
 582                 */
 583                 if(sneak_node_found && control.sneak)
 584                         touching_ground = true;
 585         }
 586
 587         /*
 588                 Set new position
 589         */
 590         setPosition(position);
 591
 592         /*
 593                 Report collisions
 594         */
 595         if(collision_info)
 596         {
 597                 // Report fall collision
 598                 if(old_speed.Y < m_speed.Y - 0.1 && !standing_on_unloaded)
 599                 {
 600                         CollisionInfo info;
 601                         info.t = COLLISION_FALL;
 602                         info.speed = m_speed.Y - old_speed.Y;
 603                         collision_info->push_back(info);
 604                 }
 605         }
 606 }
 607
 608 void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d)
 609 {
 610         move(dtime, map, pos_max_d, NULL);
 611 }
 612
 613 void LocalPlayer::applyControl(float dtime)
 614 {
 615         // Clear stuff
 616         swimming_up = false;
 617
 618         // Random constants
 619         f32 walk_acceleration = 4.0 * BS;
 620         f32 walkspeed_max = 4.0 * BS;
 621
 622         setPitch(control.pitch);
 623         setYaw(control.yaw);
 624
 625         v3f move_direction = v3f(0,0,1);
 626         move_direction.rotateXZBy(getYaw());
 627
 628         v3f speed = v3f(0,0,0);
 629
 630         bool free_move = g_settings->getBool("free_move");
 631         bool fast_move = g_settings->getBool("fast_move");
 632         bool continuous_forward = g_settings->getBool("continuous_forward");
 633
 634         if(free_move || is_climbing)
 635         {
 636                 v3f speed = getSpeed();
 637                 speed.Y = 0;
 638                 setSpeed(speed);
 639         }
 640
 641         // Whether superspeed mode is used or not
 642         bool superspeed = false;
 643
 644         // If free movement and fast movement, always move fast
 645         if(free_move && fast_move)
 646                 superspeed = true;
 647
 648         // Auxiliary button 1 (E)
 649         if(control.aux1)
 650         {
 651                 if(free_move)
 652                 {
 653                         // In free movement mode, aux1 descends
 654                         v3f speed = getSpeed();
 655                         if(fast_move)
 656                                 speed.Y = -20*BS;
 657                         else
 658                                 speed.Y = -walkspeed_max;
 659                         setSpeed(speed);
 660                 }
 661                 else if(is_climbing)
 662                 {
 663                         v3f speed = getSpeed();
 664                         speed.Y = -3*BS;
 665                         setSpeed(speed);
 666                 }
 667                 else
 668                 {
 669                         // If not free movement but fast is allowed, aux1 is
 670                         // "Turbo button"
 671                         if(fast_move)
 672                                 superspeed = true;
 673                 }
 674         }
 675
 676         if(continuous_forward)
 677                 speed += move_direction;
 678
 679         if(control.up)
 680         {
 681                 if(continuous_forward)
 682                         superspeed = true;
 683                 else
 684                         speed += move_direction;
 685         }
 686         if(control.down)
 687         {
 688                 speed -= move_direction;
 689         }
 690         if(control.left)
 691         {
 692                 speed += move_direction.crossProduct(v3f(0,1,0));
 693         }
 694         if(control.right)
 695         {
 696                 speed += move_direction.crossProduct(v3f(0,-1,0));
 697         }
 698         if(control.jump)
 699         {
 700                 if(free_move)
 701                 {
 702                         v3f speed = getSpeed();
 703                         if(fast_move)
 704                                 speed.Y = 20*BS;
 705                         else
 706                                 speed.Y = walkspeed_max;
 707                         setSpeed(speed);
 708                 }
 709                 else if(touching_ground)
 710                 {
 711                         v3f speed = getSpeed();
 712                         /*
 713                                 NOTE: The d value in move() affects jump height by
 714                                 raising the height at which the jump speed is kept
 715                                 at its starting value
 716                         */
 717                         speed.Y = 6.5*BS;
 718                         setSpeed(speed);
 719                 }
 720                 // Use the oscillating value for getting out of water
 721                 // (so that the player doesn't fly on the surface)
 722                 else if(in_water)
 723                 {
 724                         v3f speed = getSpeed();
 725                         speed.Y = 1.5*BS;
 726                         setSpeed(speed);
 727                         swimming_up = true;
 728                 }
 729                 else if(is_climbing)
 730                 {
 731                         v3f speed = getSpeed();
 732                         speed.Y = 3*BS;
 733                         setSpeed(speed);
 734                 }
 735         }
 736
 737         // The speed of the player (Y is ignored)
 738         if(superspeed)
 739                 speed = speed.normalize() * walkspeed_max * 5.0;
 740         else if(control.sneak)
 741                 speed = speed.normalize() * walkspeed_max / 3.0;
 742         else
 743                 speed = speed.normalize() * walkspeed_max;
 744
 745         f32 inc = walk_acceleration * BS * dtime;
 746
 747         // Faster acceleration if fast and free movement
 748         if(free_move && fast_move)
 749                 inc = walk_acceleration * BS * dtime * 10;
 750
 751         // Accelerate to target speed with maximum increment
 752         accelerate(speed, inc);
 753 }
 754 #endif
 755