src/player.cpp

   1 /*
   2 (c) 2010 Perttu Ahola <celeron55@gmail.com>
   3 */
   4
   5 #include "player.h"
   6 #include "map.h"
   7 #include "connection.h"
   8 #include "constants.h"
   9
  10 Player::Player():
  11         touching_ground(false),
  12         inventory(PLAYER_INVENTORY_SIZE),
  13         peer_id(PEER_ID_NEW),
  14         m_speed(0,0,0),
  15         m_position(0,0,0)
  16 {
  17         updateName("<not set>");
  18 }
  19
  20 Player::~Player()
  21 {
  22 }
  23
  24 void Player::move(f32 dtime, Map &map)
  25 {
  26         v3f position = getPosition();
  27         v3f oldpos = position;
  28         v3s16 oldpos_i = floatToInt(oldpos);
  29
  30         /*std::cout<<"oldpos_i=("<<oldpos_i.X<<","<<oldpos_i.Y<<","
  31                         <<oldpos_i.Z<<")"<<std::endl;*/
  32
  33         position += m_speed * dtime;
  34
  35         // Skip collision detection if player is non-local
  36         if(isLocal() == false)
  37         {
  38                 setPosition(position);
  39                 return;
  40         }
  41
  42         /*
  43                 Collision detection
  44         */
  45
  46         v3s16 pos_i = floatToInt(position);
  47
  48         // The frame length is limited to the player going 0.1*BS per call
  49         f32 d = (float)BS * 0.15;
  50
  51 #define PLAYER_RADIUS (BS*0.3)
  52 #define PLAYER_HEIGHT (BS*1.7)
  53
  54         core::aabbox3d<f32> playerbox(
  55                 position.X - PLAYER_RADIUS,
  56                 position.Y - 0.0,
  57                 position.Z - PLAYER_RADIUS,
  58                 position.X + PLAYER_RADIUS,
  59                 position.Y + PLAYER_HEIGHT,
  60                 position.Z + PLAYER_RADIUS
  61         );
  62         core::aabbox3d<f32> playerbox_old(
  63                 oldpos.X - PLAYER_RADIUS,
  64                 oldpos.Y - 0.0,
  65                 oldpos.Z - PLAYER_RADIUS,
  66                 oldpos.X + PLAYER_RADIUS,
  67                 oldpos.Y + PLAYER_HEIGHT,
  68                 oldpos.Z + PLAYER_RADIUS
  69         );
  70
  71         //hilightboxes.push_back(playerbox);
  72
  73         touching_ground = false;
  74
  75         /*std::cout<<"Checking collisions for ("
  76                         <<oldpos_i.X<<","<<oldpos_i.Y<<","<<oldpos_i.Z
  77                         <<") -> ("
  78                         <<pos_i.X<<","<<pos_i.Y<<","<<pos_i.Z
  79                         <<"):"<<std::endl;*/
  80
  81         for(s16 y = oldpos_i.Y - 1; y <= oldpos_i.Y + 2; y++){
  82                 for(s16 z = oldpos_i.Z - 1; z <= oldpos_i.Z + 1; z++){
  83                         for(s16 x = oldpos_i.X - 1; x <= oldpos_i.X + 1; x++){
  84                                 //std::cout<<"with ("<<x<<","<<y<<","<<z<<"): ";
  85                                 try{
  86                                         if(map.getNode(v3s16(x,y,z)).d == MATERIAL_AIR){
  87                                                 //std::cout<<"air."<<std::endl;
  88                                                 continue;
  89                                         }
  90                                 }
  91                                 catch(InvalidPositionException &e)
  92                                 {
  93                                         // Doing nothing here will block the player from
  94                                         // walking over map borders
  95                                 }
  96
  97                                 core::aabbox3d<f32> nodebox = Map::getNodeBox(
  98                                                 v3s16(x,y,z));
  99
 100                                 // See if the player is touching ground
 101                                 if(
 102                                                 fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < d
 103                                                 && nodebox.MaxEdge.X-d > playerbox.MinEdge.X
 104                                                 && nodebox.MinEdge.X+d < playerbox.MaxEdge.X
 105                                                 && nodebox.MaxEdge.Z-d > playerbox.MinEdge.Z
 106                                                 && nodebox.MinEdge.Z+d < playerbox.MaxEdge.Z
 107                                 ){
 108                                         touching_ground = true;
 109                                 }
 110
 111                                 if(playerbox.intersectsWithBox(nodebox))
 112                                 {
 113
 114         v3f dirs[3] = {
 115                 v3f(0,0,1), // back
 116                 v3f(0,1,0), // top
 117                 v3f(1,0,0), // right
 118         };
 119         for(u16 i=0; i<3; i++)
 120         {
 121                 f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[i]);
 122                 f32 nodemin = nodebox.MinEdge.dotProduct(dirs[i]);
 123                 f32 playermax = playerbox.MaxEdge.dotProduct(dirs[i]);
 124                 f32 playermin = playerbox.MinEdge.dotProduct(dirs[i]);
 125                 f32 playermax_old = playerbox_old.MaxEdge.dotProduct(dirs[i]);
 126                 f32 playermin_old = playerbox_old.MinEdge.dotProduct(dirs[i]);
 127
 128                 bool main_edge_collides =
 129                         ((nodemax > playermin && nodemax <= playermin_old + d
 130                                 && m_speed.dotProduct(dirs[i]) < 0)
 131                         ||
 132                         (nodemin < playermax && nodemin >= playermax_old - d
 133                                 && m_speed.dotProduct(dirs[i]) > 0));
 134
 135                 bool other_edges_collide = true;
 136                 for(u16 j=0; j<3; j++)
 137                 {
 138                         if(j == i)
 139                                 continue;
 140                         f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[j]);
 141                         f32 nodemin = nodebox.MinEdge.dotProduct(dirs[j]);
 142                         f32 playermax = playerbox.MaxEdge.dotProduct(dirs[j]);
 143                         f32 playermin = playerbox.MinEdge.dotProduct(dirs[j]);
 144                         if(!(nodemax - d > playermin && nodemin + d < playermax))
 145                         {
 146                                 other_edges_collide = false;
 147                                 break;
 148                         }
 149                 }
 150
 151                 if(main_edge_collides && other_edges_collide)
 152                 {
 153                         m_speed -= m_speed.dotProduct(dirs[i]) * dirs[i];
 154                         position -= position.dotProduct(dirs[i]) * dirs[i];
 155                         position += oldpos.dotProduct(dirs[i]) * dirs[i];
 156                 }
 157
 158         }
 159                                 } // if(playerbox.intersectsWithBox(nodebox))
 160                         } // for x
 161                 } // for z
 162         } // for y
 163
 164         setPosition(position);
 165 }
 166
 167 // Y direction is ignored
 168 void Player::accelerate(v3f target_speed, f32 max_increase)
 169 {
 170         if(m_speed.X < target_speed.X - max_increase)
 171                 m_speed.X += max_increase;
 172         else if(m_speed.X > target_speed.X + max_increase)
 173                 m_speed.X -= max_increase;
 174         else if(m_speed.X < target_speed.X)
 175                 m_speed.X = target_speed.X;
 176         else if(m_speed.X > target_speed.X)
 177                 m_speed.X = target_speed.X;
 178
 179         if(m_speed.Z < target_speed.Z - max_increase)
 180                 m_speed.Z += max_increase;
 181         else if(m_speed.Z > target_speed.Z + max_increase)
 182                 m_speed.Z -= max_increase;
 183         else if(m_speed.Z < target_speed.Z)
 184                 m_speed.Z = target_speed.Z;
 185         else if(m_speed.Z > target_speed.Z)
 186                 m_speed.Z = target_speed.Z;
 187 }
 188
 189 /*
 190         RemotePlayer
 191 */
 192
 193 RemotePlayer::RemotePlayer(
 194                 scene::ISceneNode* parent,
 195                 IrrlichtDevice *device,
 196                 s32 id):
 197         scene::ISceneNode(parent, (device==NULL)?NULL:device->getSceneManager(), id),
 198         m_text(NULL)
 199 {
 200         m_box = core::aabbox3d<f32>(-BS/2,0,-BS/2,BS/2,BS*2,BS/2);
 201
 202         if(parent != NULL && device != NULL)
 203         {
 204                 // ISceneNode stores a member called SceneManager
 205                 scene::ISceneManager* mgr = SceneManager;
 206                 video::IVideoDriver* driver = mgr->getVideoDriver();
 207                 gui::IGUIEnvironment* gui = device->getGUIEnvironment();
 208
 209                 // Add a text node for showing the name
 210                 wchar_t wname[1] = {0};
 211                 m_text = mgr->addTextSceneNode(gui->getBuiltInFont(),
 212                                 wname, video::SColor(255,255,255,255), this);
 213                 m_text->setPosition(v3f(0, (f32)BS*2.1, 0));
 214
 215                 // Attach a simple mesh to the player for showing an image
 216                 scene::SMesh *mesh = new scene::SMesh();
 217                 { // Front
 218                 scene::IMeshBuffer *buf = new scene::SMeshBuffer();
 219                 video::SColor c(255,255,255,255);
 220                 video::S3DVertex vertices[4] =
 221                 {
 222                         video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
 223                         video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
 224                         video::S3DVertex(BS/2,BS*2,0, 0,0,0, c, 1,0),
 225                         video::S3DVertex(-BS/2,BS*2,0, 0,0,0, c, 0,0),
 226                 };
 227                 u16 indices[] = {0,1,2,2,3,0};
 228                 buf->append(vertices, 4, indices, 6);
 229                 // Set material
 230                 buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
 231                 //buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
 232                 buf->getMaterial().setTexture(0, driver->getTexture("../data/player.png"));
 233                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
 234                 //buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 235                 buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 236                 // Add to mesh
 237                 mesh->addMeshBuffer(buf);
 238                 buf->drop();
 239                 }
 240                 { // Back
 241                 scene::IMeshBuffer *buf = new scene::SMeshBuffer();
 242                 video::SColor c(255,255,255,255);
 243                 video::S3DVertex vertices[4] =
 244                 {
 245                         video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
 246                         video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
 247                         video::S3DVertex(-BS/2,BS*2,0, 0,0,0, c, 0,0),
 248                         video::S3DVertex(BS/2,BS*2,0, 0,0,0, c, 1,0),
 249                 };
 250                 u16 indices[] = {0,1,2,2,3,0};
 251                 buf->append(vertices, 4, indices, 6);
 252                 // Set material
 253                 buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
 254                 //buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
 255                 buf->getMaterial().setTexture(0, driver->getTexture("../data/player_back.png"));
 256                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
 257                 buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 258                 // Add to mesh
 259                 mesh->addMeshBuffer(buf);
 260                 buf->drop();
 261                 }
 262                 scene::IMeshSceneNode *node = mgr->addMeshSceneNode(mesh, this);
 263                 mesh->drop();
 264                 node->setPosition(v3f(0,0,0));
 265         }
 266 }
 267
 268 RemotePlayer::~RemotePlayer()
 269 {
 270         if(SceneManager != NULL)
 271                 ISceneNode::remove();
 272 }
 273
 274 void RemotePlayer::updateName(const char *name)
 275 {
 276         Player::updateName(name);
 277         if(m_text != NULL)
 278         {
 279                 wchar_t wname[PLAYERNAME_SIZE];
 280                 mbstowcs(wname, m_name, strlen(m_name)+1);
 281                 m_text->setText(wname);
 282         }
 283 }
 284
 285 /*
 286         LocalPlayer
 287 */
 288
 289 LocalPlayer::LocalPlayer()
 290 {
 291 }
 292
 293 LocalPlayer::~LocalPlayer()
 294 {
 295 }
 296
 297 void LocalPlayer::applyControl(float dtime)
 298 {
 299         // Random constants
 300 #define WALK_ACCELERATION (4.0 * BS)
 301 #define WALKSPEED_MAX (4.0 * BS)
 302         f32 walk_acceleration = WALK_ACCELERATION;
 303         f32 walkspeed_max = WALKSPEED_MAX;
 304
 305         setPitch(control.pitch);
 306         setYaw(control.yaw);
 307
 308         v3f move_direction = v3f(0,0,1);
 309         move_direction.rotateXZBy(getYaw());
 310
 311         v3f speed = v3f(0,0,0);
 312
 313         // Superspeed mode
 314         bool superspeed = false;
 315         if(control.superspeed)
 316         {
 317                 speed += move_direction;
 318                 superspeed = true;
 319         }
 320
 321         if(control.up)
 322         {
 323                 speed += move_direction;
 324         }
 325         if(control.down)
 326         {
 327                 speed -= move_direction;
 328         }
 329         if(control.left)
 330         {
 331                 speed += move_direction.crossProduct(v3f(0,1,0));
 332         }
 333         if(control.right)
 334         {
 335                 speed += move_direction.crossProduct(v3f(0,-1,0));
 336         }
 337         if(control.jump)
 338         {
 339                 if(touching_ground){
 340                         v3f speed = getSpeed();
 341                         speed.Y = 6.5*BS;
 342                         setSpeed(speed);
 343                 }
 344         }
 345
 346         // The speed of the player (Y is ignored)
 347         if(superspeed)
 348                 speed = speed.normalize() * walkspeed_max * 5;
 349         else
 350                 speed = speed.normalize() * walkspeed_max;
 351
 352         f32 inc = walk_acceleration * BS * dtime;
 353
 354         // Accelerate to target speed with maximum increment
 355         accelerate(speed, inc);
 356 }
 357
 358