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         peer_id(PEER_ID_INEXISTENT),
  34         m_speed(0,0,0),
  35         m_position(0,0,0)
  36 {
  37         updateName("<not set>");
  38         resetInventory();
  39 }
  40
  41 Player::~Player()
  42 {
  43 }
  44
  45 void Player::resetInventory()
  46 {
  47         inventory.clear();
  48         inventory.addList("main", PLAYER_INVENTORY_SIZE);
  49         inventory.addList("craft", 9);
  50         inventory.addList("craftresult", 1);
  51 }
  52
  53 // Y direction is ignored
  54 void Player::accelerate(v3f target_speed, f32 max_increase)
  55 {
  56         v3f d_wanted = target_speed - m_speed;
  57         d_wanted.Y = 0;
  58         f32 dl_wanted = d_wanted.getLength();
  59         f32 dl = dl_wanted;
  60         if(dl > max_increase)
  61                 dl = max_increase;
  62
  63         v3f d = d_wanted.normalize() * dl;
  64
  65         m_speed.X += d.X;
  66         m_speed.Z += d.Z;
  67         //m_speed += d;
  68
  69 #if 0 // old code
  70         if(m_speed.X < target_speed.X - max_increase)
  71                 m_speed.X += max_increase;
  72         else if(m_speed.X > target_speed.X + max_increase)
  73                 m_speed.X -= max_increase;
  74         else if(m_speed.X < target_speed.X)
  75                 m_speed.X = target_speed.X;
  76         else if(m_speed.X > target_speed.X)
  77                 m_speed.X = target_speed.X;
  78
  79         if(m_speed.Z < target_speed.Z - max_increase)
  80                 m_speed.Z += max_increase;
  81         else if(m_speed.Z > target_speed.Z + max_increase)
  82                 m_speed.Z -= max_increase;
  83         else if(m_speed.Z < target_speed.Z)
  84                 m_speed.Z = target_speed.Z;
  85         else if(m_speed.Z > target_speed.Z)
  86                 m_speed.Z = target_speed.Z;
  87 #endif
  88 }
  89
  90 void Player::serialize(std::ostream &os)
  91 {
  92         // Utilize a Settings object for storing values
  93         Settings args;
  94         args.setS32("version", 1);
  95         args.set("name", m_name);
  96         args.setFloat("pitch", m_pitch);
  97         args.setFloat("yaw", m_yaw);
  98         args.setV3F("position", m_position);
  99
 100         args.writeLines(os);
 101
 102         os<<"PlayerArgsEnd\n";
 103
 104         inventory.serialize(os);
 105 }
 106
 107 void Player::deSerialize(std::istream &is)
 108 {
 109         Settings args;
 110
 111         for(;;)
 112         {
 113                 if(is.eof())
 114                         throw SerializationError
 115                                         ("Player::deSerialize(): PlayerArgsEnd not found");
 116                 std::string line;
 117                 std::getline(is, line);
 118                 std::string trimmedline = trim(line);
 119                 if(trimmedline == "PlayerArgsEnd")
 120                         break;
 121                 args.parseConfigLine(line);
 122         }
 123
 124         //args.getS32("version");
 125         std::string name = args.get("name");
 126         updateName(name.c_str());
 127         m_pitch = args.getFloat("pitch");
 128         m_yaw = args.getFloat("yaw");
 129         m_position = args.getV3F("position");
 130
 131         inventory.deSerialize(is);
 132 }
 133
 134 /*
 135         RemotePlayer
 136 */
 137
 138 #ifndef SERVER
 139
 140 RemotePlayer::RemotePlayer(
 141                 scene::ISceneNode* parent,
 142                 IrrlichtDevice *device,
 143                 s32 id):
 144         scene::ISceneNode(parent, (device==NULL)?NULL:device->getSceneManager(), id),
 145         m_text(NULL)
 146 {
 147         m_box = core::aabbox3d<f32>(-BS/2,0,-BS/2,BS/2,BS*2,BS/2);
 148
 149         if(parent != NULL && device != NULL)
 150         {
 151                 // ISceneNode stores a member called SceneManager
 152                 scene::ISceneManager* mgr = SceneManager;
 153                 video::IVideoDriver* driver = mgr->getVideoDriver();
 154                 gui::IGUIEnvironment* gui = device->getGUIEnvironment();
 155
 156                 // Add a text node for showing the name
 157                 wchar_t wname[1] = {0};
 158                 m_text = mgr->addTextSceneNode(gui->getBuiltInFont(),
 159                                 wname, video::SColor(255,255,255,255), this);
 160                 m_text->setPosition(v3f(0, (f32)BS*2.1, 0));
 161
 162                 // Attach a simple mesh to the player for showing an image
 163                 scene::SMesh *mesh = new scene::SMesh();
 164                 { // Front
 165                 scene::IMeshBuffer *buf = new scene::SMeshBuffer();
 166                 video::SColor c(255,255,255,255);
 167                 video::S3DVertex vertices[4] =
 168                 {
 169                         video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
 170                         video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
 171                         video::S3DVertex(BS/2,BS*2,0, 0,0,0, c, 1,0),
 172                         video::S3DVertex(-BS/2,BS*2,0, 0,0,0, c, 0,0),
 173                 };
 174                 u16 indices[] = {0,1,2,2,3,0};
 175                 buf->append(vertices, 4, indices, 6);
 176                 // Set material
 177                 buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
 178                 //buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
 179                 buf->getMaterial().setTexture(0, driver->getTexture(porting::getDataPath("player.png").c_str()));
 180                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
 181                 buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
 182                 //buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 183                 buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 184                 // Add to mesh
 185                 mesh->addMeshBuffer(buf);
 186                 buf->drop();
 187                 }
 188                 { // Back
 189                 scene::IMeshBuffer *buf = new scene::SMeshBuffer();
 190                 video::SColor c(255,255,255,255);
 191                 video::S3DVertex vertices[4] =
 192                 {
 193                         video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
 194                         video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
 195                         video::S3DVertex(-BS/2,BS*2,0, 0,0,0, c, 0,0),
 196                         video::S3DVertex(BS/2,BS*2,0, 0,0,0, c, 1,0),
 197                 };
 198                 u16 indices[] = {0,1,2,2,3,0};
 199                 buf->append(vertices, 4, indices, 6);
 200                 // Set material
 201                 buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
 202                 //buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
 203                 buf->getMaterial().setTexture(0, driver->getTexture(porting::getDataPath("player_back.png").c_str()));
 204                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
 205                 buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
 206                 buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 207                 // Add to mesh
 208                 mesh->addMeshBuffer(buf);
 209                 buf->drop();
 210                 }
 211                 m_node = mgr->addMeshSceneNode(mesh, this);
 212                 mesh->drop();
 213                 m_node->setPosition(v3f(0,0,0));
 214         }
 215 }
 216
 217 RemotePlayer::~RemotePlayer()
 218 {
 219         if(SceneManager != NULL)
 220                 ISceneNode::remove();
 221 }
 222
 223 void RemotePlayer::updateName(const char *name)
 224 {
 225         Player::updateName(name);
 226         if(m_text != NULL)
 227         {
 228                 wchar_t wname[PLAYERNAME_SIZE];
 229                 mbstowcs(wname, m_name, strlen(m_name)+1);
 230                 m_text->setText(wname);
 231         }
 232 }
 233
 234 void RemotePlayer::move(f32 dtime, Map &map)
 235 {
 236         m_pos_animation_time_counter += dtime;
 237         m_pos_animation_counter += dtime;
 238         v3f movevector = m_position - m_oldpos;
 239         f32 moveratio;
 240         if(m_pos_animation_time < 0.001)
 241                 moveratio = 1.0;
 242         else
 243                 moveratio = m_pos_animation_counter / m_pos_animation_time;
 244         if(moveratio > 1.5)
 245                 moveratio = 1.5;
 246         m_showpos = m_oldpos + movevector * moveratio;
 247
 248         ISceneNode::setPosition(m_showpos);
 249 }
 250
 251 #endif
 252
 253 #ifndef SERVER
 254 /*
 255         LocalPlayer
 256 */
 257
 258 LocalPlayer::LocalPlayer()
 259 {
 260 }
 261
 262 LocalPlayer::~LocalPlayer()
 263 {
 264 }
 265
 266 void LocalPlayer::move(f32 dtime, Map &map)
 267 {
 268         v3f position = getPosition();
 269         v3f oldpos = position;
 270         v3s16 oldpos_i = floatToInt(oldpos);
 271
 272         /*std::cout<<"oldpos_i=("<<oldpos_i.X<<","<<oldpos_i.Y<<","
 273                         <<oldpos_i.Z<<")"<<std::endl;*/
 274
 275         position += m_speed * dtime;
 276
 277         bool free_move = g_settings.getBool("free_move");
 278         bool terrain_viewer = g_settings.getBool("terrain_viewer");
 279
 280         // Skip collision detection if player is non-local or
 281         // a special movement mode is used
 282         if(isLocal() == false || free_move || terrain_viewer)
 283         {
 284                 setPosition(position);
 285                 return;
 286         }
 287
 288         /*
 289                 Collision detection
 290         */
 291
 292         v3s16 pos_i = floatToInt(position);
 293
 294         /*
 295                 Check if player is in water
 296         */
 297         try{
 298                 if(in_water)
 299                 {
 300                         v3s16 pp = floatToInt(position + v3f(0,0,0));
 301                         in_water = content_liquid(map.getNode(pp).d);
 302                 }
 303                 else
 304                 {
 305                         v3s16 pp = floatToInt(position + v3f(0,BS/2,0));
 306                         in_water = content_liquid(map.getNode(pp).d);
 307                 }
 308         }
 309         catch(InvalidPositionException &e)
 310         {
 311                 in_water = false;
 312         }
 313
 314         // The frame length is limited to the player going 0.1*BS per call
 315         f32 d = (float)BS * 0.15;
 316
 317 #define PLAYER_RADIUS (BS*0.3)
 318 #define PLAYER_HEIGHT (BS*1.7)
 319
 320         core::aabbox3d<f32> playerbox(
 321                 position.X - PLAYER_RADIUS,
 322                 position.Y - 0.0,
 323                 position.Z - PLAYER_RADIUS,
 324                 position.X + PLAYER_RADIUS,
 325                 position.Y + PLAYER_HEIGHT,
 326                 position.Z + PLAYER_RADIUS
 327         );
 328         core::aabbox3d<f32> playerbox_old(
 329                 oldpos.X - PLAYER_RADIUS,
 330                 oldpos.Y - 0.0,
 331                 oldpos.Z - PLAYER_RADIUS,
 332                 oldpos.X + PLAYER_RADIUS,
 333                 oldpos.Y + PLAYER_HEIGHT,
 334                 oldpos.Z + PLAYER_RADIUS
 335         );
 336
 337         //hilightboxes.push_back(playerbox);
 338
 339         touching_ground = false;
 340
 341         /*std::cout<<"Checking collisions for ("
 342                         <<oldpos_i.X<<","<<oldpos_i.Y<<","<<oldpos_i.Z
 343                         <<") -> ("
 344                         <<pos_i.X<<","<<pos_i.Y<<","<<pos_i.Z
 345                         <<"):"<<std::endl;*/
 346
 347         for(s16 y = oldpos_i.Y - 1; y <= oldpos_i.Y + 2; y++){
 348                 for(s16 z = oldpos_i.Z - 1; z <= oldpos_i.Z + 1; z++){
 349                         for(s16 x = oldpos_i.X - 1; x <= oldpos_i.X + 1; x++){
 350                                 try{
 351                                         if(content_walkable(map.getNode(v3s16(x,y,z)).d) == false){
 352                                                 continue;
 353                                         }
 354                                 }
 355                                 catch(InvalidPositionException &e)
 356                                 {
 357                                         // Doing nothing here will block the player from
 358                                         // walking over map borders
 359                                 }
 360
 361                                 core::aabbox3d<f32> nodebox = Map::getNodeBox(
 362                                                 v3s16(x,y,z));
 363
 364                                 // See if the player is touching ground
 365                                 if(
 366                                                 fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < d
 367                                                 && nodebox.MaxEdge.X-d > playerbox.MinEdge.X
 368                                                 && nodebox.MinEdge.X+d < playerbox.MaxEdge.X
 369                                                 && nodebox.MaxEdge.Z-d > playerbox.MinEdge.Z
 370                                                 && nodebox.MinEdge.Z+d < playerbox.MaxEdge.Z
 371                                 ){
 372                                         touching_ground = true;
 373                                 }
 374
 375                                 if(playerbox.intersectsWithBox(nodebox))
 376                                 {
 377
 378         v3f dirs[3] = {
 379                 v3f(0,0,1), // back
 380                 v3f(0,1,0), // top
 381                 v3f(1,0,0), // right
 382         };
 383         for(u16 i=0; i<3; i++)
 384         {
 385                 f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[i]);
 386                 f32 nodemin = nodebox.MinEdge.dotProduct(dirs[i]);
 387                 f32 playermax = playerbox.MaxEdge.dotProduct(dirs[i]);
 388                 f32 playermin = playerbox.MinEdge.dotProduct(dirs[i]);
 389                 f32 playermax_old = playerbox_old.MaxEdge.dotProduct(dirs[i]);
 390                 f32 playermin_old = playerbox_old.MinEdge.dotProduct(dirs[i]);
 391
 392                 bool main_edge_collides =
 393                         ((nodemax > playermin && nodemax <= playermin_old + d
 394                                 && m_speed.dotProduct(dirs[i]) < 0)
 395                         ||
 396                         (nodemin < playermax && nodemin >= playermax_old - d
 397                                 && m_speed.dotProduct(dirs[i]) > 0));
 398
 399                 bool other_edges_collide = true;
 400                 for(u16 j=0; j<3; j++)
 401                 {
 402                         if(j == i)
 403                                 continue;
 404                         f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[j]);
 405                         f32 nodemin = nodebox.MinEdge.dotProduct(dirs[j]);
 406                         f32 playermax = playerbox.MaxEdge.dotProduct(dirs[j]);
 407                         f32 playermin = playerbox.MinEdge.dotProduct(dirs[j]);
 408                         if(!(nodemax - d > playermin && nodemin + d < playermax))
 409                         {
 410                                 other_edges_collide = false;
 411                                 break;
 412                         }
 413                 }
 414
 415                 if(main_edge_collides && other_edges_collide)
 416                 {
 417                         m_speed -= m_speed.dotProduct(dirs[i]) * dirs[i];
 418                         position -= position.dotProduct(dirs[i]) * dirs[i];
 419                         position += oldpos.dotProduct(dirs[i]) * dirs[i];
 420                 }
 421
 422         }
 423                                 } // if(playerbox.intersectsWithBox(nodebox))
 424                         } // for x
 425                 } // for z
 426         } // for y
 427
 428         setPosition(position);
 429 }
 430
 431 void LocalPlayer::applyControl(float dtime)
 432 {
 433         // Clear stuff
 434         swimming_up = false;
 435
 436         // Random constants
 437 #define WALK_ACCELERATION (4.0 * BS)
 438 #define WALKSPEED_MAX (4.0 * BS)
 439         f32 walk_acceleration = WALK_ACCELERATION;
 440         f32 walkspeed_max = WALKSPEED_MAX;
 441
 442         setPitch(control.pitch);
 443         setYaw(control.yaw);
 444
 445         v3f move_direction = v3f(0,0,1);
 446         move_direction.rotateXZBy(getYaw());
 447
 448         v3f speed = v3f(0,0,0);
 449
 450         bool free_move = g_settings.getBool("free_move");
 451         bool fast_move = g_settings.getBool("fast_move");
 452         bool continuous_forward = g_settings.getBool("continuous_forward");
 453
 454         if(free_move)
 455         {
 456                 v3f speed = getSpeed();
 457                 speed.Y = 0;
 458                 setSpeed(speed);
 459         }
 460
 461         // Whether superspeed mode is used or not
 462         bool superspeed = false;
 463
 464         // If free movement and fast movement, always move fast
 465         if(free_move && fast_move)
 466                 superspeed = true;
 467
 468         // Auxiliary button 1 (E)
 469         if(control.aux1)
 470         {
 471                 if(free_move)
 472                 {
 473                         // In free movement mode, aux1 descends
 474                         v3f speed = getSpeed();
 475                         if(fast_move)
 476                                 speed.Y = -20*BS;
 477                         else
 478                                 speed.Y = -walkspeed_max;
 479                         setSpeed(speed);
 480                 }
 481                 else
 482                 {
 483                         // If not free movement but fast is allowed, aux1 is
 484                         // "Turbo button"
 485                         if(fast_move)
 486                                 superspeed = true;
 487                 }
 488         }
 489
 490         if(continuous_forward)
 491                 speed += move_direction;
 492
 493         if(control.up)
 494         {
 495                 if(continuous_forward)
 496                         superspeed = true;
 497                 else
 498                         speed += move_direction;
 499         }
 500         if(control.down)
 501         {
 502                 speed -= move_direction;
 503         }
 504         if(control.left)
 505         {
 506                 speed += move_direction.crossProduct(v3f(0,1,0));
 507         }
 508         if(control.right)
 509         {
 510                 speed += move_direction.crossProduct(v3f(0,-1,0));
 511         }
 512         if(control.jump)
 513         {
 514                 if(free_move)
 515                 {
 516                         v3f speed = getSpeed();
 517                         if(fast_move)
 518                                 speed.Y = 20*BS;
 519                         else
 520                                 speed.Y = walkspeed_max;
 521                         setSpeed(speed);
 522                 }
 523                 else if(touching_ground)
 524                 {
 525                         v3f speed = getSpeed();
 526                         speed.Y = 6.5*BS;
 527                         setSpeed(speed);
 528                 }
 529                 else if(in_water)
 530                 {
 531                         v3f speed = getSpeed();
 532                         speed.Y = 2.0*BS;
 533                         setSpeed(speed);
 534                         swimming_up = true;
 535                 }
 536         }
 537
 538         // The speed of the player (Y is ignored)
 539         if(superspeed)
 540                 speed = speed.normalize() * walkspeed_max * 5;
 541         else
 542                 speed = speed.normalize() * walkspeed_max;
 543
 544         f32 inc = walk_acceleration * BS * dtime;
 545
 546         // Faster acceleration if fast and free movement
 547         if(free_move && fast_move)
 548                 inc = walk_acceleration * BS * dtime * 10;
 549
 550         // Accelerate to target speed with maximum increment
 551         accelerate(speed, inc);
 552 }
 553 #endif
 554