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