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 "collision.h"
  32 #include "environment.h"
  33 #include "gamedef.h"
  34
  35 Player::Player(IGameDef *gamedef):
  36         touching_ground(false),
  37         in_water(false),
  38         in_water_stable(false),
  39         is_climbing(false),
  40         swimming_up(false),
  41         inventory(gamedef->idef()),
  42         inventory_backup(NULL),
  43         hp(20),
  44         peer_id(PEER_ID_INEXISTENT),
  45 // protected
  46         m_gamedef(gamedef),
  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::resetInventory()
  62 {
  63         inventory.clear();
  64         inventory.addList("main", PLAYER_INVENTORY_SIZE);
  65         inventory.addList("craft", 9);
  66         inventory.addList("craftpreview", 1);
  67         inventory.addList("craftresult", 1);
  68 }
  69
  70 // Y direction is ignored
  71 void Player::accelerate(v3f target_speed, f32 max_increase)
  72 {
  73         v3f d_wanted = target_speed - m_speed;
  74         d_wanted.Y = 0;
  75         f32 dl_wanted = d_wanted.getLength();
  76         f32 dl = dl_wanted;
  77         if(dl > max_increase)
  78                 dl = max_increase;
  79
  80         v3f d = d_wanted.normalize() * dl;
  81
  82         m_speed.X += d.X;
  83         m_speed.Z += d.Z;
  84         //m_speed += d;
  85
  86 #if 0 // old code
  87         if(m_speed.X < target_speed.X - max_increase)
  88                 m_speed.X += max_increase;
  89         else if(m_speed.X > target_speed.X + max_increase)
  90                 m_speed.X -= max_increase;
  91         else if(m_speed.X < target_speed.X)
  92                 m_speed.X = target_speed.X;
  93         else if(m_speed.X > target_speed.X)
  94                 m_speed.X = target_speed.X;
  95
  96         if(m_speed.Z < target_speed.Z - max_increase)
  97                 m_speed.Z += max_increase;
  98         else if(m_speed.Z > target_speed.Z + max_increase)
  99                 m_speed.Z -= max_increase;
 100         else if(m_speed.Z < target_speed.Z)
 101                 m_speed.Z = target_speed.Z;
 102         else if(m_speed.Z > target_speed.Z)
 103                 m_speed.Z = target_speed.Z;
 104 #endif
 105 }
 106
 107 v3s16 Player::getLightPosition() const
 108 {
 109         return floatToInt(m_position + v3f(0,BS+BS/2,0), BS);
 110 }
 111
 112 void Player::serialize(std::ostream &os)
 113 {
 114         // Utilize a Settings object for storing values
 115         Settings args;
 116         args.setS32("version", 1);
 117         args.set("name", m_name);
 118         //args.set("password", m_password);
 119         args.setFloat("pitch", m_pitch);
 120         args.setFloat("yaw", m_yaw);
 121         args.setV3F("position", m_position);
 122         args.setS32("hp", hp);
 123
 124         args.writeLines(os);
 125
 126         os<<"PlayerArgsEnd\n";
 127
 128         // If actual inventory is backed up due to creative mode, save it
 129         // instead of the dummy creative mode inventory
 130         if(inventory_backup)
 131                 inventory_backup->serialize(os);
 132         else
 133                 inventory.serialize(os);
 134 }
 135
 136 void Player::deSerialize(std::istream &is)
 137 {
 138         Settings args;
 139
 140         for(;;)
 141         {
 142                 if(is.eof())
 143                         throw SerializationError
 144                                         ("Player::deSerialize(): PlayerArgsEnd not found");
 145                 std::string line;
 146                 std::getline(is, line);
 147                 std::string trimmedline = trim(line);
 148                 if(trimmedline == "PlayerArgsEnd")
 149                         break;
 150                 args.parseConfigLine(line);
 151         }
 152
 153         //args.getS32("version"); // Version field value not used
 154         std::string name = args.get("name");
 155         updateName(name.c_str());
 156         setPitch(args.getFloat("pitch"));
 157         setYaw(args.getFloat("yaw"));
 158         setPosition(args.getV3F("position"));
 159         try{
 160                 hp = args.getS32("hp");
 161         }catch(SettingNotFoundException &e){
 162                 hp = 20;
 163         }
 164
 165         inventory.deSerialize(is);
 166
 167         if(inventory.getList("craftpreview") == NULL)
 168         {
 169                 // Convert players without craftpreview
 170                 inventory.addList("craftpreview", 1);
 171
 172                 bool craftresult_is_preview = true;
 173                 if(args.exists("craftresult_is_preview"))
 174                         craftresult_is_preview = args.getBool("craftresult_is_preview");
 175                 if(craftresult_is_preview)
 176                 {
 177                         // Clear craftresult
 178                         inventory.getList("craftresult")->changeItem(0, ItemStack());
 179                 }
 180         }
 181 }
 182
 183 #ifndef SERVER
 184 /*
 185         LocalPlayer
 186 */
 187
 188 LocalPlayer::LocalPlayer(IGameDef *gamedef):
 189         Player(gamedef),
 190         m_sneak_node(32767,32767,32767),
 191         m_sneak_node_exists(false)
 192 {
 193         // Initialize hp to 0, so that no hearts will be shown if server
 194         // doesn't support health points
 195         hp = 0;
 196 }
 197
 198 LocalPlayer::~LocalPlayer()
 199 {
 200 }
 201
 202 void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d,
 203                 core::list<CollisionInfo> *collision_info)
 204 {
 205         INodeDefManager *nodemgr = m_gamedef->ndef();
 206
 207         v3f position = getPosition();
 208         v3f oldpos = position;
 209         v3s16 oldpos_i = floatToInt(oldpos, BS);
 210
 211         v3f old_speed = m_speed;
 212
 213         /*std::cout<<"oldpos_i=("<<oldpos_i.X<<","<<oldpos_i.Y<<","
 214                         <<oldpos_i.Z<<")"<<std::endl;*/
 215
 216         /*
 217                 Calculate new position
 218         */
 219         position += m_speed * dtime;
 220
 221         // Skip collision detection if a special movement mode is used
 222         bool free_move = g_settings->getBool("free_move");
 223         if(free_move)
 224         {
 225                 setPosition(position);
 226                 return;
 227         }
 228
 229         /*
 230                 Collision detection
 231         */
 232
 233         // Player position in nodes
 234         v3s16 pos_i = floatToInt(position, BS);
 235
 236         /*
 237                 Check if player is in water (the oscillating value)
 238         */
 239         try{
 240                 // If in water, the threshold of coming out is at higher y
 241                 if(in_water)
 242                 {
 243                         v3s16 pp = floatToInt(position + v3f(0,BS*0.1,0), BS);
 244                         in_water = nodemgr->get(map.getNode(pp).getContent()).isLiquid();
 245                 }
 246                 // If not in water, the threshold of going in is at lower y
 247                 else
 248                 {
 249                         v3s16 pp = floatToInt(position + v3f(0,BS*0.5,0), BS);
 250                         in_water = nodemgr->get(map.getNode(pp).getContent()).isLiquid();
 251                 }
 252         }
 253         catch(InvalidPositionException &e)
 254         {
 255                 in_water = false;
 256         }
 257
 258         /*
 259                 Check if player is in water (the stable value)
 260         */
 261         try{
 262                 v3s16 pp = floatToInt(position + v3f(0,0,0), BS);
 263                 in_water_stable = nodemgr->get(map.getNode(pp).getContent()).isLiquid();
 264         }
 265         catch(InvalidPositionException &e)
 266         {
 267                 in_water_stable = false;
 268         }
 269
 270         /*
 271                 Check if player is climbing
 272         */
 273
 274         try {
 275                 v3s16 pp = floatToInt(position + v3f(0,0.5*BS,0), BS);
 276                 v3s16 pp2 = floatToInt(position + v3f(0,-0.2*BS,0), BS);
 277                 is_climbing = ((nodemgr->get(map.getNode(pp).getContent()).climbable ||
 278                 nodemgr->get(map.getNode(pp2).getContent()).climbable) && !free_move);
 279         }
 280         catch(InvalidPositionException &e)
 281         {
 282                 is_climbing = false;
 283         }
 284
 285         /*
 286                 Collision uncertainty radius
 287                 Make it a bit larger than the maximum distance of movement
 288         */
 289         //f32 d = pos_max_d * 1.1;
 290         // A fairly large value in here makes moving smoother
 291         f32 d = 0.15*BS;
 292
 293         // This should always apply, otherwise there are glitches
 294         assert(d > pos_max_d);
 295
 296         float player_radius = BS*0.35;
 297         float player_height = BS*1.7;
 298
 299         // Maximum distance over border for sneaking
 300         f32 sneak_max = BS*0.4;
 301
 302         /*
 303                 If sneaking, player has larger collision radius to keep from
 304                 falling
 305         */
 306         /*if(control.sneak)
 307                 player_radius = sneak_max + d*1.1;*/
 308
 309         /*
 310                 If sneaking, keep in range from the last walked node and don't
 311                 fall off from it
 312         */
 313         if(control.sneak && m_sneak_node_exists)
 314         {
 315                 f32 maxd = 0.5*BS + sneak_max;
 316                 v3f lwn_f = intToFloat(m_sneak_node, BS);
 317                 position.X = rangelim(position.X, lwn_f.X-maxd, lwn_f.X+maxd);
 318                 position.Z = rangelim(position.Z, lwn_f.Z-maxd, lwn_f.Z+maxd);
 319
 320                 f32 min_y = lwn_f.Y + 0.5*BS;
 321                 if(position.Y < min_y)
 322                 {
 323                         position.Y = min_y;
 324
 325                         //v3f old_speed = m_speed;
 326
 327                         if(m_speed.Y < 0)
 328                                 m_speed.Y = 0;
 329
 330                         /*if(collision_info)
 331                         {
 332                                 // Report fall collision
 333                                 if(old_speed.Y < m_speed.Y - 0.1)
 334                                 {
 335                                         CollisionInfo info;
 336                                         info.t = COLLISION_FALL;
 337                                         info.speed = m_speed.Y - old_speed.Y;
 338                                         collision_info->push_back(info);
 339                                 }
 340                         }*/
 341                 }
 342         }
 343
 344         /*
 345                 Calculate player collision box (new and old)
 346         */
 347         core::aabbox3d<f32> playerbox(
 348                 position.X - player_radius,
 349                 position.Y - 0.0,
 350                 position.Z - player_radius,
 351                 position.X + player_radius,
 352                 position.Y + player_height,
 353                 position.Z + player_radius
 354         );
 355         core::aabbox3d<f32> playerbox_old(
 356                 oldpos.X - player_radius,
 357                 oldpos.Y - 0.0,
 358                 oldpos.Z - player_radius,
 359                 oldpos.X + player_radius,
 360                 oldpos.Y + player_height,
 361                 oldpos.Z + player_radius
 362         );
 363
 364         /*
 365                 If the player's feet touch the topside of any node, this is
 366                 set to true.
 367
 368                 Player is allowed to jump when this is true.
 369         */
 370         touching_ground = false;
 371
 372         /*std::cout<<"Checking collisions for ("
 373                         <<oldpos_i.X<<","<<oldpos_i.Y<<","<<oldpos_i.Z
 374                         <<") -> ("
 375                         <<pos_i.X<<","<<pos_i.Y<<","<<pos_i.Z
 376                         <<"):"<<std::endl;*/
 377
 378         bool standing_on_unloaded = false;
 379
 380         /*
 381                 Go through every node around the player
 382         */
 383         for(s16 y = oldpos_i.Y - 1; y <= oldpos_i.Y + 2; y++)
 384         for(s16 z = oldpos_i.Z - 1; z <= oldpos_i.Z + 1; z++)
 385         for(s16 x = oldpos_i.X - 1; x <= oldpos_i.X + 1; x++)
 386         {
 387                 bool is_unloaded = false;
 388                 try{
 389                         // Player collides into walkable nodes
 390                         if(nodemgr->get(map.getNode(v3s16(x,y,z))).walkable == false)
 391                                 continue;
 392                 }
 393                 catch(InvalidPositionException &e)
 394                 {
 395                         is_unloaded = true;
 396                         // Doing nothing here will block the player from
 397                         // walking over map borders
 398                 }
 399
 400                 core::aabbox3d<f32> nodebox = getNodeBox(v3s16(x,y,z), BS);
 401
 402                 /*
 403                         See if the player is touching ground.
 404
 405                         Player touches ground if player's minimum Y is near node's
 406                         maximum Y and player's X-Z-area overlaps with the node's
 407                         X-Z-area.
 408
 409                         Use 0.15*BS so that it is easier to get on a node.
 410                 */
 411                 if(
 412                                 //fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < d
 413                                 fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < 0.15*BS
 414                                 && nodebox.MaxEdge.X-d > playerbox.MinEdge.X
 415                                 && nodebox.MinEdge.X+d < playerbox.MaxEdge.X
 416                                 && nodebox.MaxEdge.Z-d > playerbox.MinEdge.Z
 417                                 && nodebox.MinEdge.Z+d < playerbox.MaxEdge.Z
 418                 ){
 419                         touching_ground = true;
 420                         if(is_unloaded)
 421                                 standing_on_unloaded = true;
 422                 }
 423
 424                 // If player doesn't intersect with node, ignore node.
 425                 if(playerbox.intersectsWithBox(nodebox) == false)
 426                         continue;
 427
 428                 /*
 429                         Go through every axis
 430                 */
 431                 v3f dirs[3] = {
 432                         v3f(0,0,1), // back-front
 433                         v3f(0,1,0), // top-bottom
 434                         v3f(1,0,0), // right-left
 435                 };
 436                 for(u16 i=0; i<3; i++)
 437                 {
 438                         /*
 439                                 Calculate values along the axis
 440                         */
 441                         f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[i]);
 442                         f32 nodemin = nodebox.MinEdge.dotProduct(dirs[i]);
 443                         f32 playermax = playerbox.MaxEdge.dotProduct(dirs[i]);
 444                         f32 playermin = playerbox.MinEdge.dotProduct(dirs[i]);
 445                         f32 playermax_old = playerbox_old.MaxEdge.dotProduct(dirs[i]);
 446                         f32 playermin_old = playerbox_old.MinEdge.dotProduct(dirs[i]);
 447
 448                         /*
 449                                 Check collision for the axis.
 450                                 Collision happens when player is going through a surface.
 451                         */
 452                         /*f32 neg_d = d;
 453                         f32 pos_d = d;
 454                         // Make it easier to get on top of a node
 455                         if(i == 1)
 456                                 neg_d = 0.15*BS;
 457                         bool negative_axis_collides =
 458                                 (nodemax > playermin && nodemax <= playermin_old + neg_d
 459                                         && m_speed.dotProduct(dirs[i]) < 0);
 460                         bool positive_axis_collides =
 461                                 (nodemin < playermax && nodemin >= playermax_old - pos_d
 462                                         && m_speed.dotProduct(dirs[i]) > 0);*/
 463                         bool negative_axis_collides =
 464                                 (nodemax > playermin && nodemax <= playermin_old + d
 465                                         && m_speed.dotProduct(dirs[i]) < 0);
 466                         bool positive_axis_collides =
 467                                 (nodemin < playermax && nodemin >= playermax_old - d
 468                                         && m_speed.dotProduct(dirs[i]) > 0);
 469                         bool main_axis_collides =
 470                                         negative_axis_collides || positive_axis_collides;
 471
 472                         /*
 473                                 Check overlap of player and node in other axes
 474                         */
 475                         bool other_axes_overlap = true;
 476                         for(u16 j=0; j<3; j++)
 477                         {
 478                                 if(j == i)
 479                                         continue;
 480                                 f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[j]);
 481                                 f32 nodemin = nodebox.MinEdge.dotProduct(dirs[j]);
 482                                 f32 playermax = playerbox.MaxEdge.dotProduct(dirs[j]);
 483                                 f32 playermin = playerbox.MinEdge.dotProduct(dirs[j]);
 484                                 if(!(nodemax - d > playermin && nodemin + d < playermax))
 485                                 {
 486                                         other_axes_overlap = false;
 487                                         break;
 488                                 }
 489                         }
 490
 491                         /*
 492                                 If this is a collision, revert the position in the main
 493                                 direction.
 494                         */
 495                         if(other_axes_overlap && main_axis_collides)
 496                         {
 497                                 //v3f old_speed = m_speed;
 498
 499                                 m_speed -= m_speed.dotProduct(dirs[i]) * dirs[i];
 500                                 position -= position.dotProduct(dirs[i]) * dirs[i];
 501                                 position += oldpos.dotProduct(dirs[i]) * dirs[i];
 502
 503                                 /*if(collision_info)
 504                                 {
 505                                         // Report fall collision
 506                                         if(old_speed.Y < m_speed.Y - 0.1)
 507                                         {
 508                                                 CollisionInfo info;
 509                                                 info.t = COLLISION_FALL;
 510                                                 info.speed = m_speed.Y - old_speed.Y;
 511                                                 collision_info->push_back(info);
 512                                         }
 513                                 }*/
 514                         }
 515
 516                 }
 517         } // xyz
 518
 519         /*
 520                 Check the nodes under the player to see from which node the
 521                 player is sneaking from, if any.
 522         */
 523         {
 524                 v3s16 pos_i_bottom = floatToInt(position - v3f(0,BS/2,0), BS);
 525                 v2f player_p2df(position.X, position.Z);
 526                 f32 min_distance_f = 100000.0*BS;
 527                 // If already seeking from some node, compare to it.
 528                 /*if(m_sneak_node_exists)
 529                 {
 530                         v3f sneaknode_pf = intToFloat(m_sneak_node, BS);
 531                         v2f sneaknode_p2df(sneaknode_pf.X, sneaknode_pf.Z);
 532                         f32 d_horiz_f = player_p2df.getDistanceFrom(sneaknode_p2df);
 533                         f32 d_vert_f = fabs(sneaknode_pf.Y + BS*0.5 - position.Y);
 534                         // Ignore if player is not on the same level (likely dropped)
 535                         if(d_vert_f < 0.15*BS)
 536                                 min_distance_f = d_horiz_f;
 537                 }*/
 538                 v3s16 new_sneak_node = m_sneak_node;
 539                 for(s16 x=-1; x<=1; x++)
 540                 for(s16 z=-1; z<=1; z++)
 541                 {
 542                         v3s16 p = pos_i_bottom + v3s16(x,0,z);
 543                         v3f pf = intToFloat(p, BS);
 544                         v2f node_p2df(pf.X, pf.Z);
 545                         f32 distance_f = player_p2df.getDistanceFrom(node_p2df);
 546                         f32 max_axis_distance_f = MYMAX(
 547                                         fabs(player_p2df.X-node_p2df.X),
 548                                         fabs(player_p2df.Y-node_p2df.Y));
 549
 550                         if(distance_f > min_distance_f ||
 551                                         max_axis_distance_f > 0.5*BS + sneak_max + 0.1*BS)
 552                                 continue;
 553
 554                         try{
 555                                 // The node to be sneaked on has to be walkable
 556                                 if(nodemgr->get(map.getNode(p)).walkable == false)
 557                                         continue;
 558                                 // And the node above it has to be nonwalkable
 559                                 if(nodemgr->get(map.getNode(p+v3s16(0,1,0))).walkable == true)
 560                                         continue;
 561                         }
 562                         catch(InvalidPositionException &e)
 563                         {
 564                                 continue;
 565                         }
 566
 567                         min_distance_f = distance_f;
 568                         new_sneak_node = p;
 569                 }
 570
 571                 bool sneak_node_found = (min_distance_f < 100000.0*BS*0.9);
 572
 573                 if(control.sneak && m_sneak_node_exists)
 574                 {
 575                         if(sneak_node_found)
 576                                 m_sneak_node = new_sneak_node;
 577                 }
 578                 else
 579                 {
 580                         m_sneak_node = new_sneak_node;
 581                         m_sneak_node_exists = sneak_node_found;
 582                 }
 583
 584                 /*
 585                         If sneaking, the player's collision box can be in air, so
 586                         this has to be set explicitly
 587                 */
 588                 if(sneak_node_found && control.sneak)
 589                         touching_ground = true;
 590         }
 591
 592         /*
 593                 Set new position
 594         */
 595         setPosition(position);
 596
 597         /*
 598                 Report collisions
 599         */
 600         if(collision_info)
 601         {
 602                 // Report fall collision
 603                 if(old_speed.Y < m_speed.Y - 0.1 && !standing_on_unloaded)
 604                 {
 605                         CollisionInfo info;
 606                         info.t = COLLISION_FALL;
 607                         info.speed = m_speed.Y - old_speed.Y;
 608                         collision_info->push_back(info);
 609                 }
 610         }
 611 }
 612
 613 void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d)
 614 {
 615         move(dtime, map, pos_max_d, NULL);
 616 }
 617
 618 void LocalPlayer::applyControl(float dtime)
 619 {
 620         // Clear stuff
 621         swimming_up = false;
 622
 623         // Random constants
 624         f32 walk_acceleration = 4.0 * BS;
 625         f32 walkspeed_max = 4.0 * BS;
 626
 627         setPitch(control.pitch);
 628         setYaw(control.yaw);
 629
 630         v3f move_direction = v3f(0,0,1);
 631         move_direction.rotateXZBy(getYaw());
 632
 633         v3f speed = v3f(0,0,0);
 634
 635         bool free_move = g_settings->getBool("free_move");
 636         bool fast_move = g_settings->getBool("fast_move");
 637         bool continuous_forward = g_settings->getBool("continuous_forward");
 638
 639         if(free_move || is_climbing)
 640         {
 641                 v3f speed = getSpeed();
 642                 speed.Y = 0;
 643                 setSpeed(speed);
 644         }
 645
 646         // Whether superspeed mode is used or not
 647         bool superspeed = false;
 648
 649         // If free movement and fast movement, always move fast
 650         if(free_move && fast_move)
 651                 superspeed = true;
 652
 653         // Auxiliary button 1 (E)
 654         if(control.aux1)
 655         {
 656                 if(free_move)
 657                 {
 658                         // In free movement mode, aux1 descends
 659                         v3f speed = getSpeed();
 660                         if(fast_move)
 661                                 speed.Y = -20*BS;
 662                         else
 663                                 speed.Y = -walkspeed_max;
 664                         setSpeed(speed);
 665                 }
 666                 else if(is_climbing)
 667                 {
 668                         v3f speed = getSpeed();
 669                         speed.Y = -3*BS;
 670                         setSpeed(speed);
 671                 }
 672                 else
 673                 {
 674                         // If not free movement but fast is allowed, aux1 is
 675                         // "Turbo button"
 676                         if(fast_move)
 677                                 superspeed = true;
 678                 }
 679         }
 680
 681         if(continuous_forward)
 682                 speed += move_direction;
 683
 684         if(control.up)
 685         {
 686                 if(continuous_forward)
 687                         superspeed = true;
 688                 else
 689                         speed += move_direction;
 690         }
 691         if(control.down)
 692         {
 693                 speed -= move_direction;
 694         }
 695         if(control.left)
 696         {
 697                 speed += move_direction.crossProduct(v3f(0,1,0));
 698         }
 699         if(control.right)
 700         {
 701                 speed += move_direction.crossProduct(v3f(0,-1,0));
 702         }
 703         if(control.jump)
 704         {
 705                 if(free_move)
 706                 {
 707                         v3f speed = getSpeed();
 708                         if(fast_move)
 709                                 speed.Y = 20*BS;
 710                         else
 711                                 speed.Y = walkspeed_max;
 712                         setSpeed(speed);
 713                 }
 714                 else if(touching_ground)
 715                 {
 716                         /*
 717                                 NOTE: The d value in move() affects jump height by
 718                                 raising the height at which the jump speed is kept
 719                                 at its starting value
 720                         */
 721                         v3f speed = getSpeed();
 722                         if(speed.Y >= -0.5*BS)
 723                         {
 724                                 speed.Y = 6.5*BS;
 725                                 setSpeed(speed);
 726                         }
 727                 }
 728                 // Use the oscillating value for getting out of water
 729                 // (so that the player doesn't fly on the surface)
 730                 else if(in_water)
 731                 {
 732                         v3f speed = getSpeed();
 733                         speed.Y = 1.5*BS;
 734                         setSpeed(speed);
 735                         swimming_up = true;
 736                 }
 737                 else if(is_climbing)
 738                 {
 739                         v3f speed = getSpeed();
 740                         speed.Y = 3*BS;
 741                         setSpeed(speed);
 742                 }
 743         }
 744
 745         // The speed of the player (Y is ignored)
 746         if(superspeed)
 747                 speed = speed.normalize() * walkspeed_max * 5.0;
 748         else if(control.sneak)
 749                 speed = speed.normalize() * walkspeed_max / 3.0;
 750         else
 751                 speed = speed.normalize() * walkspeed_max;
 752
 753         f32 inc = walk_acceleration * BS * dtime;
 754
 755         // Faster acceleration if fast and free movement
 756         if(free_move && fast_move)
 757                 inc = walk_acceleration * BS * dtime * 10;
 758
 759         // Accelerate to target speed with maximum increment
 760         accelerate(speed, inc);
 761 }
 762 #endif
 763