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)
 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 {
 264 }
 265
 266 LocalPlayer::~LocalPlayer()
 267 {
 268 }
 269
 270 void LocalPlayer::move(f32 dtime, Map &map)
 271 {
 272         v3f position = getPosition();
 273         v3f oldpos = position;
 274         v3s16 oldpos_i = floatToInt(oldpos);
 275
 276         /*std::cout<<"oldpos_i=("<<oldpos_i.X<<","<<oldpos_i.Y<<","
 277                         <<oldpos_i.Z<<")"<<std::endl;*/
 278
 279         position += m_speed * dtime;
 280
 281         bool free_move = g_settings.getBool("free_move");
 282
 283         // Skip collision detection if player is non-local or
 284         // a special movement mode is used
 285         if(isLocal() == false || free_move)
 286         {
 287                 setPosition(position);
 288                 return;
 289         }
 290
 291         /*
 292                 Collision detection
 293         */
 294
 295         v3s16 pos_i = floatToInt(position);
 296
 297         /*
 298                 Check if player is in water (the oscillating value)
 299         */
 300         try{
 301                 if(in_water)
 302                 {
 303                         v3s16 pp = floatToInt(position + v3f(0,0,0));
 304                         in_water = content_liquid(map.getNode(pp).d);
 305                 }
 306                 else
 307                 {
 308                         v3s16 pp = floatToInt(position + v3f(0,BS/2,0));
 309                         in_water = content_liquid(map.getNode(pp).d);
 310                 }
 311         }
 312         catch(InvalidPositionException &e)
 313         {
 314                 in_water = false;
 315         }
 316
 317         /*
 318                 Check if player is in water (the stable value)
 319         */
 320         try{
 321                 v3s16 pp = floatToInt(position + v3f(0,0,0));
 322                 in_water_stable = content_liquid(map.getNode(pp).d);
 323         }
 324         catch(InvalidPositionException &e)
 325         {
 326                 in_water_stable = false;
 327         }
 328
 329         // The frame length is limited to the player going 0.1*BS per call
 330         f32 d = (float)BS * 0.15;
 331
 332 #define PLAYER_RADIUS (BS*0.3)
 333 #define PLAYER_HEIGHT (BS*1.7)
 334
 335         core::aabbox3d<f32> playerbox(
 336                 position.X - PLAYER_RADIUS,
 337                 position.Y - 0.0,
 338                 position.Z - PLAYER_RADIUS,
 339                 position.X + PLAYER_RADIUS,
 340                 position.Y + PLAYER_HEIGHT,
 341                 position.Z + PLAYER_RADIUS
 342         );
 343         core::aabbox3d<f32> playerbox_old(
 344                 oldpos.X - PLAYER_RADIUS,
 345                 oldpos.Y - 0.0,
 346                 oldpos.Z - PLAYER_RADIUS,
 347                 oldpos.X + PLAYER_RADIUS,
 348                 oldpos.Y + PLAYER_HEIGHT,
 349                 oldpos.Z + PLAYER_RADIUS
 350         );
 351
 352         //hilightboxes.push_back(playerbox);
 353
 354         touching_ground = false;
 355
 356         /*std::cout<<"Checking collisions for ("
 357                         <<oldpos_i.X<<","<<oldpos_i.Y<<","<<oldpos_i.Z
 358                         <<") -> ("
 359                         <<pos_i.X<<","<<pos_i.Y<<","<<pos_i.Z
 360                         <<"):"<<std::endl;*/
 361
 362         for(s16 y = oldpos_i.Y - 1; y <= oldpos_i.Y + 2; y++){
 363                 for(s16 z = oldpos_i.Z - 1; z <= oldpos_i.Z + 1; z++){
 364                         for(s16 x = oldpos_i.X - 1; x <= oldpos_i.X + 1; x++){
 365                                 try{
 366                                         if(content_walkable(map.getNode(v3s16(x,y,z)).d) == false){
 367                                                 continue;
 368                                         }
 369                                 }
 370                                 catch(InvalidPositionException &e)
 371                                 {
 372                                         // Doing nothing here will block the player from
 373                                         // walking over map borders
 374                                 }
 375
 376                                 core::aabbox3d<f32> nodebox = Map::getNodeBox(
 377                                                 v3s16(x,y,z));
 378
 379                                 // See if the player is touching ground
 380                                 if(
 381                                                 fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < d
 382                                                 && nodebox.MaxEdge.X-d > playerbox.MinEdge.X
 383                                                 && nodebox.MinEdge.X+d < playerbox.MaxEdge.X
 384                                                 && nodebox.MaxEdge.Z-d > playerbox.MinEdge.Z
 385                                                 && nodebox.MinEdge.Z+d < playerbox.MaxEdge.Z
 386                                 ){
 387                                         touching_ground = true;
 388                                 }
 389
 390                                 if(playerbox.intersectsWithBox(nodebox))
 391                                 {
 392
 393         v3f dirs[3] = {
 394                 v3f(0,0,1), // back
 395                 v3f(0,1,0), // top
 396                 v3f(1,0,0), // right
 397         };
 398         for(u16 i=0; i<3; i++)
 399         {
 400                 f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[i]);
 401                 f32 nodemin = nodebox.MinEdge.dotProduct(dirs[i]);
 402                 f32 playermax = playerbox.MaxEdge.dotProduct(dirs[i]);
 403                 f32 playermin = playerbox.MinEdge.dotProduct(dirs[i]);
 404                 f32 playermax_old = playerbox_old.MaxEdge.dotProduct(dirs[i]);
 405                 f32 playermin_old = playerbox_old.MinEdge.dotProduct(dirs[i]);
 406
 407                 bool main_edge_collides =
 408                         ((nodemax > playermin && nodemax <= playermin_old + d
 409                                 && m_speed.dotProduct(dirs[i]) < 0)
 410                         ||
 411                         (nodemin < playermax && nodemin >= playermax_old - d
 412                                 && m_speed.dotProduct(dirs[i]) > 0));
 413
 414                 bool other_edges_collide = true;
 415                 for(u16 j=0; j<3; j++)
 416                 {
 417                         if(j == i)
 418                                 continue;
 419                         f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[j]);
 420                         f32 nodemin = nodebox.MinEdge.dotProduct(dirs[j]);
 421                         f32 playermax = playerbox.MaxEdge.dotProduct(dirs[j]);
 422                         f32 playermin = playerbox.MinEdge.dotProduct(dirs[j]);
 423                         if(!(nodemax - d > playermin && nodemin + d < playermax))
 424                         {
 425                                 other_edges_collide = false;
 426                                 break;
 427                         }
 428                 }
 429
 430                 if(main_edge_collides && other_edges_collide)
 431                 {
 432                         m_speed -= m_speed.dotProduct(dirs[i]) * dirs[i];
 433                         position -= position.dotProduct(dirs[i]) * dirs[i];
 434                         position += oldpos.dotProduct(dirs[i]) * dirs[i];
 435                 }
 436
 437         }
 438                                 } // if(playerbox.intersectsWithBox(nodebox))
 439                         } // for x
 440                 } // for z
 441         } // for y
 442
 443         setPosition(position);
 444 }
 445
 446 void LocalPlayer::applyControl(float dtime)
 447 {
 448         // Clear stuff
 449         swimming_up = false;
 450
 451         // Random constants
 452 #define WALK_ACCELERATION (4.0 * BS)
 453 #define WALKSPEED_MAX (4.0 * BS)
 454         f32 walk_acceleration = WALK_ACCELERATION;
 455         f32 walkspeed_max = WALKSPEED_MAX;
 456
 457         setPitch(control.pitch);
 458         setYaw(control.yaw);
 459
 460         v3f move_direction = v3f(0,0,1);
 461         move_direction.rotateXZBy(getYaw());
 462
 463         v3f speed = v3f(0,0,0);
 464
 465         bool free_move = g_settings.getBool("free_move");
 466         bool fast_move = g_settings.getBool("fast_move");
 467         bool continuous_forward = g_settings.getBool("continuous_forward");
 468
 469         if(free_move)
 470         {
 471                 v3f speed = getSpeed();
 472                 speed.Y = 0;
 473                 setSpeed(speed);
 474         }
 475
 476         // Whether superspeed mode is used or not
 477         bool superspeed = false;
 478
 479         // If free movement and fast movement, always move fast
 480         if(free_move && fast_move)
 481                 superspeed = true;
 482
 483         // Auxiliary button 1 (E)
 484         if(control.aux1)
 485         {
 486                 if(free_move)
 487                 {
 488                         // In free movement mode, aux1 descends
 489                         v3f speed = getSpeed();
 490                         if(fast_move)
 491                                 speed.Y = -20*BS;
 492                         else
 493                                 speed.Y = -walkspeed_max;
 494                         setSpeed(speed);
 495                 }
 496                 else
 497                 {
 498                         // If not free movement but fast is allowed, aux1 is
 499                         // "Turbo button"
 500                         if(fast_move)
 501                                 superspeed = true;
 502                 }
 503         }
 504
 505         if(continuous_forward)
 506                 speed += move_direction;
 507
 508         if(control.up)
 509         {
 510                 if(continuous_forward)
 511                         superspeed = true;
 512                 else
 513                         speed += move_direction;
 514         }
 515         if(control.down)
 516         {
 517                 speed -= move_direction;
 518         }
 519         if(control.left)
 520         {
 521                 speed += move_direction.crossProduct(v3f(0,1,0));
 522         }
 523         if(control.right)
 524         {
 525                 speed += move_direction.crossProduct(v3f(0,-1,0));
 526         }
 527         if(control.jump)
 528         {
 529                 if(free_move)
 530                 {
 531                         v3f speed = getSpeed();
 532                         if(fast_move)
 533                                 speed.Y = 20*BS;
 534                         else
 535                                 speed.Y = walkspeed_max;
 536                         setSpeed(speed);
 537                 }
 538                 else if(touching_ground)
 539                 {
 540                         v3f speed = getSpeed();
 541                         speed.Y = 6.5*BS;
 542                         setSpeed(speed);
 543                 }
 544                 // Use the oscillating value for getting out of water
 545                 // (so that the player doesn't fly on the surface)
 546                 else if(in_water)
 547                 {
 548                         v3f speed = getSpeed();
 549                         speed.Y = 1.5*BS;
 550                         setSpeed(speed);
 551                         swimming_up = true;
 552                 }
 553         }
 554
 555         // The speed of the player (Y is ignored)
 556         if(superspeed)
 557                 speed = speed.normalize() * walkspeed_max * 5;
 558         else
 559                 speed = speed.normalize() * walkspeed_max;
 560
 561         f32 inc = walk_acceleration * BS * dtime;
 562
 563         // Faster acceleration if fast and free movement
 564         if(free_move && fast_move)
 565                 inc = walk_acceleration * BS * dtime * 10;
 566
 567         // Accelerate to target speed with maximum increment
 568         accelerate(speed, inc);
 569 }
 570 #endif
 571