src/serverobject.cpp

   1 /*
   2 Minetest-c55
   3 Copyright (C) 2010-2011 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 #include "serverobject.h"
  21 #include <fstream>
  22 #include "environment.h"
  23 #include "inventory.h"
  24 #include "collision.h"
  25
  26 core::map<u16, ServerActiveObject::Factory> ServerActiveObject::m_types;
  27
  28 ServerActiveObject::ServerActiveObject(ServerEnvironment *env, u16 id, v3f pos):
  29         ActiveObject(id),
  30         m_known_by_count(0),
  31         m_removed(false),
  32         m_static_exists(false),
  33         m_static_block(1337,1337,1337),
  34         m_env(env),
  35         m_base_position(pos)
  36 {
  37 }
  38
  39 ServerActiveObject::~ServerActiveObject()
  40 {
  41 }
  42
  43 ServerActiveObject* ServerActiveObject::create(u8 type,
  44                 ServerEnvironment *env, u16 id, v3f pos,
  45                 const std::string &data)
  46 {
  47         // Find factory function
  48         core::map<u16, Factory>::Node *n;
  49         n = m_types.find(type);
  50         if(n == NULL)
  51         {
  52                 // If factory is not found, just return.
  53                 dstream<<"WARNING: ServerActiveObject: No factory for type="
  54                                 <<type<<std::endl;
  55                 return NULL;
  56         }
  57
  58         Factory f = n->getValue();
  59         ServerActiveObject *object = (*f)(env, id, pos, data);
  60         return object;
  61 }
  62
  63 void ServerActiveObject::registerType(u16 type, Factory f)
  64 {
  65         core::map<u16, Factory>::Node *n;
  66         n = m_types.find(type);
  67         if(n)
  68                 return;
  69         m_types.insert(type, f);
  70 }
  71
  72
  73 /*
  74         TestSAO
  75 */
  76
  77 // Prototype
  78 TestSAO proto_TestSAO(NULL, 0, v3f(0,0,0));
  79
  80 TestSAO::TestSAO(ServerEnvironment *env, u16 id, v3f pos):
  81         ServerActiveObject(env, id, pos),
  82         m_timer1(0),
  83         m_age(0)
  84 {
  85         ServerActiveObject::registerType(getType(), create);
  86 }
  87
  88 ServerActiveObject* TestSAO::create(ServerEnvironment *env, u16 id, v3f pos,
  89                 const std::string &data)
  90 {
  91         return new TestSAO(env, id, pos);
  92 }
  93
  94 void TestSAO::step(float dtime, Queue<ActiveObjectMessage> &messages,
  95                 bool send_recommended)
  96 {
  97         m_age += dtime;
  98         if(m_age > 10)
  99         {
 100                 m_removed = true;
 101                 return;
 102         }
 103
 104         m_base_position.Y += dtime * BS * 2;
 105         if(m_base_position.Y > 8*BS)
 106                 m_base_position.Y = 2*BS;
 107
 108         if(send_recommended == false)
 109                 return;
 110
 111         m_timer1 -= dtime;
 112         if(m_timer1 < 0.0)
 113         {
 114                 m_timer1 += 0.125;
 115                 //dstream<<"TestSAO: id="<<getId()<<" sending data"<<std::endl;
 116
 117                 std::string data;
 118
 119                 data += itos(0); // 0 = position
 120                 data += " ";
 121                 data += itos(m_base_position.X);
 122                 data += " ";
 123                 data += itos(m_base_position.Y);
 124                 data += " ";
 125                 data += itos(m_base_position.Z);
 126
 127                 ActiveObjectMessage aom(getId(), false, data);
 128                 messages.push_back(aom);
 129         }
 130 }
 131
 132
 133 /*
 134         ItemSAO
 135 */
 136
 137 // Prototype
 138 ItemSAO proto_ItemSAO(NULL, 0, v3f(0,0,0), "");
 139
 140 ItemSAO::ItemSAO(ServerEnvironment *env, u16 id, v3f pos,
 141                 const std::string inventorystring):
 142         ServerActiveObject(env, id, pos),
 143         m_inventorystring(inventorystring),
 144         m_speed_f(0,0,0),
 145         m_last_sent_position(0,0,0)
 146 {
 147         dstream<<"Server: ItemSAO created with inventorystring=\""
 148                         <<m_inventorystring<<"\""<<std::endl;
 149         ServerActiveObject::registerType(getType(), create);
 150 }
 151
 152 ServerActiveObject* ItemSAO::create(ServerEnvironment *env, u16 id, v3f pos,
 153                 const std::string &data)
 154 {
 155         std::istringstream is(data, std::ios::binary);
 156         char buf[1];
 157         // read version
 158         is.read(buf, 1);
 159         u8 version = buf[0];
 160         // check if version is supported
 161         if(version != 0)
 162                 return NULL;
 163         std::string inventorystring = deSerializeString(is);
 164         dstream<<"ItemSAO::create(): Creating item \""
 165                         <<inventorystring<<"\""<<std::endl;
 166         return new ItemSAO(env, id, pos, inventorystring);
 167 }
 168
 169 void ItemSAO::step(float dtime, Queue<ActiveObjectMessage> &messages,
 170                 bool send_recommended)
 171 {
 172         assert(m_env);
 173         core::aabbox3d<f32> box(-BS/3.,0.0,-BS/3., BS/3.,BS*2./3.,BS/3.);
 174         collisionMoveResult moveresult;
 175         // Apply gravity
 176         m_speed_f += v3f(0, -dtime*9.81*BS, 0);
 177         // Maximum movement without glitches
 178         f32 pos_max_d = BS*0.25;
 179         // Limit speed
 180         if(m_speed_f.getLength()*dtime > pos_max_d)
 181                 m_speed_f *= pos_max_d / (m_speed_f.getLength()*dtime);
 182         v3f pos_f = getBasePosition();
 183         v3f pos_f_old = pos_f;
 184         moveresult = collisionMoveSimple(&m_env->getMap(), pos_max_d,
 185                         box, dtime, pos_f, m_speed_f);
 186
 187         if(send_recommended == false)
 188                 return;
 189
 190         if(pos_f.getDistanceFrom(m_last_sent_position) > 0.05*BS)
 191         {
 192                 setBasePosition(pos_f);
 193                 m_last_sent_position = pos_f;
 194
 195                 std::ostringstream os(std::ios::binary);
 196                 char buf[6];
 197                 // command (0 = update position)
 198                 buf[0] = 0;
 199                 os.write(buf, 1);
 200                 // pos
 201                 writeS32((u8*)buf, m_base_position.X*1000);
 202                 os.write(buf, 4);
 203                 writeS32((u8*)buf, m_base_position.Y*1000);
 204                 os.write(buf, 4);
 205                 writeS32((u8*)buf, m_base_position.Z*1000);
 206                 os.write(buf, 4);
 207                 // create message and add to list
 208                 ActiveObjectMessage aom(getId(), false, os.str());
 209                 messages.push_back(aom);
 210         }
 211 }
 212
 213 std::string ItemSAO::getClientInitializationData()
 214 {
 215         std::ostringstream os(std::ios::binary);
 216         char buf[6];
 217         // version
 218         buf[0] = 0;
 219         os.write(buf, 1);
 220         // pos
 221         writeS32((u8*)buf, m_base_position.X*1000);
 222         os.write(buf, 4);
 223         writeS32((u8*)buf, m_base_position.Y*1000);
 224         os.write(buf, 4);
 225         writeS32((u8*)buf, m_base_position.Z*1000);
 226         os.write(buf, 4);
 227         // inventorystring
 228         os<<serializeString(m_inventorystring);
 229         return os.str();
 230 }
 231
 232 std::string ItemSAO::getStaticData()
 233 {
 234         dstream<<__FUNCTION_NAME<<std::endl;
 235         std::ostringstream os(std::ios::binary);
 236         char buf[1];
 237         // version
 238         buf[0] = 0;
 239         os.write(buf, 1);
 240         // inventorystring
 241         os<<serializeString(m_inventorystring);
 242         return os.str();
 243 }
 244
 245 InventoryItem * ItemSAO::createInventoryItem()
 246 {
 247         try{
 248                 std::istringstream is(m_inventorystring, std::ios_base::binary);
 249                 InventoryItem *item = InventoryItem::deSerialize(is);
 250                 dstream<<__FUNCTION_NAME<<": m_inventorystring=\""
 251                                 <<m_inventorystring<<"\" -> item="<<item
 252                                 <<std::endl;
 253                 return item;
 254         }
 255         catch(SerializationError &e)
 256         {
 257                 dstream<<__FUNCTION_NAME<<": serialization error: "
 258                                 <<"m_inventorystring=\""<<m_inventorystring<<"\""<<std::endl;
 259                 return NULL;
 260         }
 261 }
 262
 263
 264 /*
 265         RatSAO
 266 */
 267
 268 // Prototype
 269 RatSAO proto_RatSAO(NULL, 0, v3f(0,0,0));
 270
 271 RatSAO::RatSAO(ServerEnvironment *env, u16 id, v3f pos):
 272         ServerActiveObject(env, id, pos),
 273         m_speed_f(0,0,0)
 274 {
 275         dstream<<"Server: RatSAO created"<<std::endl;
 276         ServerActiveObject::registerType(getType(), create);
 277
 278         m_oldpos = v3f(0,0,0);
 279         m_last_sent_position = v3f(0,0,0);
 280         m_yaw = 0;
 281         m_counter1 = 0;
 282         m_counter2 = 0;
 283         m_age = 0;
 284         m_touching_ground = false;
 285 }
 286
 287 ServerActiveObject* RatSAO::create(ServerEnvironment *env, u16 id, v3f pos,
 288                 const std::string &data)
 289 {
 290         std::istringstream is(data, std::ios::binary);
 291         char buf[1];
 292         // read version
 293         is.read(buf, 1);
 294         u8 version = buf[0];
 295         // check if version is supported
 296         if(version != 0)
 297                 return NULL;
 298         return new RatSAO(env, id, pos);
 299 }
 300
 301 void RatSAO::step(float dtime, Queue<ActiveObjectMessage> &messages,
 302                 bool send_recommended)
 303 {
 304         assert(m_env);
 305
 306         /*
 307                 The AI
 308         */
 309
 310         /*m_age += dtime;
 311         if(m_age > 60)
 312         {
 313                 // Die
 314                 m_removed = true;
 315                 return;
 316         }*/
 317
 318         // Apply gravity
 319         m_speed_f.Y -= dtime*9.81*BS;
 320
 321         /*
 322                 Move around if some player is close
 323         */
 324         bool player_is_close = false;
 325         // Check connected players
 326         core::list<Player*> players = m_env->getPlayers(true);
 327         core::list<Player*>::Iterator i;
 328         for(i = players.begin();
 329                         i != players.end(); i++)
 330         {
 331                 Player *player = *i;
 332                 v3f playerpos = player->getPosition();
 333                 if(m_base_position.getDistanceFrom(playerpos) < BS*10.0)
 334                 {
 335                         player_is_close = true;
 336                         break;
 337                 }
 338         }
 339
 340         if(player_is_close == false)
 341         {
 342                 m_speed_f.X = 0;
 343                 m_speed_f.Z = 0;
 344         }
 345         else
 346         {
 347                 // Move around
 348                 v3f dir(cos(m_yaw/180*PI),0,sin(m_yaw/180*PI));
 349                 f32 speed = 2*BS;
 350                 m_speed_f.X = speed * dir.X;
 351                 m_speed_f.Z = speed * dir.Z;
 352
 353                 if(m_touching_ground && (m_oldpos - m_base_position).getLength()
 354                                 < dtime*speed/2)
 355                 {
 356                         m_counter1 -= dtime;
 357                         if(m_counter1 < 0.0)
 358                         {
 359                                 m_counter1 += 1.0;
 360                                 m_speed_f.Y = 5.0*BS;
 361                         }
 362                 }
 363
 364                 {
 365                         m_counter2 -= dtime;
 366                         if(m_counter2 < 0.0)
 367                         {
 368                                 m_counter2 += (float)(myrand()%100)/100*3.0;
 369                                 m_yaw += ((float)(myrand()%200)-100)/100*180;
 370                                 m_yaw = wrapDegrees(m_yaw);
 371                         }
 372                 }
 373         }
 374
 375         m_oldpos = m_base_position;
 376
 377         /*
 378                 Move it, with collision detection
 379         */
 380
 381         core::aabbox3d<f32> box(-BS/3.,0.0,-BS/3., BS/3.,BS*2./3.,BS/3.);
 382         collisionMoveResult moveresult;
 383         // Maximum movement without glitches
 384         f32 pos_max_d = BS*0.25;
 385         // Limit speed
 386         if(m_speed_f.getLength()*dtime > pos_max_d)
 387                 m_speed_f *= pos_max_d / (m_speed_f.getLength()*dtime);
 388         v3f pos_f = getBasePosition();
 389         v3f pos_f_old = pos_f;
 390         moveresult = collisionMoveSimple(&m_env->getMap(), pos_max_d,
 391                         box, dtime, pos_f, m_speed_f);
 392         m_touching_ground = moveresult.touching_ground;
 393
 394         setBasePosition(pos_f);
 395
 396         if(send_recommended == false)
 397                 return;
 398
 399         if(pos_f.getDistanceFrom(m_last_sent_position) > 0.05*BS)
 400         {
 401                 m_last_sent_position = pos_f;
 402
 403                 std::ostringstream os(std::ios::binary);
 404                 // command (0 = update position)
 405                 writeU8(os, 0);
 406                 // pos
 407                 writeV3F1000(os, m_base_position);
 408                 // yaw
 409                 writeF1000(os, m_yaw);
 410                 // create message and add to list
 411                 ActiveObjectMessage aom(getId(), false, os.str());
 412                 messages.push_back(aom);
 413         }
 414 }
 415
 416 std::string RatSAO::getClientInitializationData()
 417 {
 418         std::ostringstream os(std::ios::binary);
 419         // version
 420         writeU8(os, 0);
 421         // pos
 422         writeV3F1000(os, m_base_position);
 423         return os.str();
 424 }
 425
 426 std::string RatSAO::getStaticData()
 427 {
 428         dstream<<__FUNCTION_NAME<<std::endl;
 429         std::ostringstream os(std::ios::binary);
 430         // version
 431         writeU8(os, 0);
 432         return os.str();
 433 }
 434
 435 InventoryItem* RatSAO::createPickedUpItem()
 436 {
 437         std::istringstream is("CraftItem rat 1", std::ios_base::binary);
 438         InventoryItem *item = InventoryItem::deSerialize(is);
 439         return item;
 440 }
 441
 442