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