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 haxmode = g_settings.getBool("haxmode");
 278
 279         // Skip collision detection if player is non-local
 280         if(isLocal() == false || haxmode)
 281         {
 282                 setPosition(position);
 283                 return;
 284         }
 285
 286         /*
 287                 Collision detection
 288         */
 289
 290         v3s16 pos_i = floatToInt(position);
 291
 292         /*
 293                 Check if player is in water
 294         */
 295         try{
 296                 if(in_water)
 297                 {
 298                         v3s16 pp = floatToInt(position + v3f(0,0,0));
 299                         in_water = content_liquid(map.getNode(pp).d);
 300                 }
 301                 else
 302                 {
 303                         v3s16 pp = floatToInt(position + v3f(0,BS/2,0));
 304                         in_water = content_liquid(map.getNode(pp).d);
 305                 }
 306         }
 307         catch(InvalidPositionException &e)
 308         {
 309                 in_water = false;
 310         }
 311
 312         // The frame length is limited to the player going 0.1*BS per call
 313         f32 d = (float)BS * 0.15;
 314
 315 #define PLAYER_RADIUS (BS*0.3)
 316 #define PLAYER_HEIGHT (BS*1.7)
 317
 318         core::aabbox3d<f32> playerbox(
 319                 position.X - PLAYER_RADIUS,
 320                 position.Y - 0.0,
 321                 position.Z - PLAYER_RADIUS,
 322                 position.X + PLAYER_RADIUS,
 323                 position.Y + PLAYER_HEIGHT,
 324                 position.Z + PLAYER_RADIUS
 325         );
 326         core::aabbox3d<f32> playerbox_old(
 327                 oldpos.X - PLAYER_RADIUS,
 328                 oldpos.Y - 0.0,
 329                 oldpos.Z - PLAYER_RADIUS,
 330                 oldpos.X + PLAYER_RADIUS,
 331                 oldpos.Y + PLAYER_HEIGHT,
 332                 oldpos.Z + PLAYER_RADIUS
 333         );
 334
 335         //hilightboxes.push_back(playerbox);
 336
 337         touching_ground = false;
 338
 339         /*std::cout<<"Checking collisions for ("
 340                         <<oldpos_i.X<<","<<oldpos_i.Y<<","<<oldpos_i.Z
 341                         <<") -> ("
 342                         <<pos_i.X<<","<<pos_i.Y<<","<<pos_i.Z
 343                         <<"):"<<std::endl;*/
 344
 345         for(s16 y = oldpos_i.Y - 1; y <= oldpos_i.Y + 2; y++){
 346                 for(s16 z = oldpos_i.Z - 1; z <= oldpos_i.Z + 1; z++){
 347                         for(s16 x = oldpos_i.X - 1; x <= oldpos_i.X + 1; x++){
 348                                 try{
 349                                         if(content_walkable(map.getNode(v3s16(x,y,z)).d) == false){
 350                                                 continue;
 351                                         }
 352                                 }
 353                                 catch(InvalidPositionException &e)
 354                                 {
 355                                         // Doing nothing here will block the player from
 356                                         // walking over map borders
 357                                 }
 358
 359                                 core::aabbox3d<f32> nodebox = Map::getNodeBox(
 360                                                 v3s16(x,y,z));
 361
 362                                 // See if the player is touching ground
 363                                 if(
 364                                                 fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < d
 365                                                 && nodebox.MaxEdge.X-d > playerbox.MinEdge.X
 366                                                 && nodebox.MinEdge.X+d < playerbox.MaxEdge.X
 367                                                 && nodebox.MaxEdge.Z-d > playerbox.MinEdge.Z
 368                                                 && nodebox.MinEdge.Z+d < playerbox.MaxEdge.Z
 369                                 ){
 370                                         touching_ground = true;
 371                                 }
 372
 373                                 if(playerbox.intersectsWithBox(nodebox))
 374                                 {
 375
 376         v3f dirs[3] = {
 377                 v3f(0,0,1), // back
 378                 v3f(0,1,0), // top
 379                 v3f(1,0,0), // right
 380         };
 381         for(u16 i=0; i<3; i++)
 382         {
 383                 f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[i]);
 384                 f32 nodemin = nodebox.MinEdge.dotProduct(dirs[i]);
 385                 f32 playermax = playerbox.MaxEdge.dotProduct(dirs[i]);
 386                 f32 playermin = playerbox.MinEdge.dotProduct(dirs[i]);
 387                 f32 playermax_old = playerbox_old.MaxEdge.dotProduct(dirs[i]);
 388                 f32 playermin_old = playerbox_old.MinEdge.dotProduct(dirs[i]);
 389
 390                 bool main_edge_collides =
 391                         ((nodemax > playermin && nodemax <= playermin_old + d
 392                                 && m_speed.dotProduct(dirs[i]) < 0)
 393                         ||
 394                         (nodemin < playermax && nodemin >= playermax_old - d
 395                                 && m_speed.dotProduct(dirs[i]) > 0));
 396
 397                 bool other_edges_collide = true;
 398                 for(u16 j=0; j<3; j++)
 399                 {
 400                         if(j == i)
 401                                 continue;
 402                         f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[j]);
 403                         f32 nodemin = nodebox.MinEdge.dotProduct(dirs[j]);
 404                         f32 playermax = playerbox.MaxEdge.dotProduct(dirs[j]);
 405                         f32 playermin = playerbox.MinEdge.dotProduct(dirs[j]);
 406                         if(!(nodemax - d > playermin && nodemin + d < playermax))
 407                         {
 408                                 other_edges_collide = false;
 409                                 break;
 410                         }
 411                 }
 412
 413                 if(main_edge_collides && other_edges_collide)
 414                 {
 415                         m_speed -= m_speed.dotProduct(dirs[i]) * dirs[i];
 416                         position -= position.dotProduct(dirs[i]) * dirs[i];
 417                         position += oldpos.dotProduct(dirs[i]) * dirs[i];
 418                 }
 419
 420         }
 421                                 } // if(playerbox.intersectsWithBox(nodebox))
 422                         } // for x
 423                 } // for z
 424         } // for y
 425
 426         setPosition(position);
 427 }
 428
 429 void LocalPlayer::applyControl(float dtime)
 430 {
 431         // Clear stuff
 432         swimming_up = false;
 433
 434         // Random constants
 435 #define WALK_ACCELERATION (4.0 * BS)
 436 #define WALKSPEED_MAX (4.0 * BS)
 437         f32 walk_acceleration = WALK_ACCELERATION;
 438         f32 walkspeed_max = WALKSPEED_MAX;
 439
 440         setPitch(control.pitch);
 441         setYaw(control.yaw);
 442
 443         v3f move_direction = v3f(0,0,1);
 444         move_direction.rotateXZBy(getYaw());
 445
 446         v3f speed = v3f(0,0,0);
 447
 448         bool haxmode = g_settings.getBool("haxmode");
 449
 450         if(haxmode)
 451         {
 452                 v3f speed = getSpeed();
 453                 speed.Y = 0;
 454                 setSpeed(speed);
 455         }
 456
 457         // Superspeed mode
 458         bool superspeed = false;
 459         if(control.superspeed)
 460         {
 461                 if(haxmode)
 462                 {
 463                         v3f speed = getSpeed();
 464                         speed.Y = -20*BS;
 465                         setSpeed(speed);
 466                 }
 467                 else
 468                 {
 469                         // "Turbo button"
 470                         /*speed += move_direction;
 471                         superspeed = true;*/
 472                 }
 473         }
 474
 475         if(haxmode)
 476                 superspeed = true;
 477
 478         if(control.up)
 479         {
 480                 speed += move_direction;
 481         }
 482         if(control.down)
 483         {
 484                 speed -= move_direction;
 485         }
 486         if(control.left)
 487         {
 488                 speed += move_direction.crossProduct(v3f(0,1,0));
 489         }
 490         if(control.right)
 491         {
 492                 speed += move_direction.crossProduct(v3f(0,-1,0));
 493         }
 494         if(control.jump)
 495         {
 496                 if(haxmode)
 497                 {
 498                         v3f speed = getSpeed();
 499                         /*speed.Y += 20.*BS * dtime * 2;
 500                         if(speed.Y < 0)
 501                                 speed.Y = 0;*/
 502                         speed.Y = 20*BS;
 503                         setSpeed(speed);
 504                 }
 505                 else if(touching_ground)
 506                 {
 507                         v3f speed = getSpeed();
 508                         speed.Y = 6.5*BS;
 509                         setSpeed(speed);
 510                 }
 511                 else if(in_water)
 512                 {
 513                         v3f speed = getSpeed();
 514                         speed.Y = 2.0*BS;
 515                         setSpeed(speed);
 516                         swimming_up = true;
 517                 }
 518         }
 519
 520         // The speed of the player (Y is ignored)
 521         if(superspeed)
 522                 speed = speed.normalize() * walkspeed_max * 5;
 523         else
 524                 speed = speed.normalize() * walkspeed_max;
 525
 526         f32 inc = walk_acceleration * BS * dtime;
 527
 528         if(haxmode)
 529                 inc = walk_acceleration * BS * dtime * 10;
 530
 531         // Accelerate to target speed with maximum increment
 532         accelerate(speed, inc);
 533 }
 534 #endif
 535