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