src/content_sao.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2013 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 Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser 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 "content_sao.h"
  21 #include "util/serialize.h"
  22 #include "collision.h"
  23 #include "environment.h"
  24 #include "tool.h" // For ToolCapabilities
  25 #include "gamedef.h"
  26 #include "nodedef.h"
  27 #include "remoteplayer.h"
  28 #include "server.h"
  29 #include "serverscripting.h"
  30 #include "genericobject.h"
  31
  32 std::map<u16, ServerActiveObject::Factory> ServerActiveObject::m_types;
  33
  34 /*
  35         TestSAO
  36 */
  37
  38 class TestSAO : public ServerActiveObject
  39 {
  40 public:
  41         TestSAO(ServerEnvironment *env, v3f pos):
  42                 ServerActiveObject(env, pos),
  43                 m_timer1(0),
  44                 m_age(0)
  45         {
  46                 ServerActiveObject::registerType(getType(), create);
  47         }
  48         ActiveObjectType getType() const
  49         { return ACTIVEOBJECT_TYPE_TEST; }
  50
  51         static ServerActiveObject* create(ServerEnvironment *env, v3f pos,
  52                         const std::string &data)
  53         {
  54                 return new TestSAO(env, pos);
  55         }
  56
  57         void step(float dtime, bool send_recommended)
  58         {
  59                 m_age += dtime;
  60                 if(m_age > 10)
  61                 {
  62                         m_removed = true;
  63                         return;
  64                 }
  65
  66                 m_base_position.Y += dtime * BS * 2;
  67                 if(m_base_position.Y > 8*BS)
  68                         m_base_position.Y = 2*BS;
  69
  70                 if(send_recommended == false)
  71                         return;
  72
  73                 m_timer1 -= dtime;
  74                 if(m_timer1 < 0.0)
  75                 {
  76                         m_timer1 += 0.125;
  77
  78                         std::string data;
  79
  80                         data += itos(0); // 0 = position
  81                         data += " ";
  82                         data += itos(m_base_position.X);
  83                         data += " ";
  84                         data += itos(m_base_position.Y);
  85                         data += " ";
  86                         data += itos(m_base_position.Z);
  87
  88                         ActiveObjectMessage aom(getId(), false, data);
  89                         m_messages_out.push(aom);
  90                 }
  91         }
  92
  93         bool getCollisionBox(aabb3f *toset) const { return false; }
  94         bool collideWithObjects() const { return false; }
  95
  96 private:
  97         float m_timer1;
  98         float m_age;
  99 };
 100
 101 // Prototype (registers item for deserialization)
 102 TestSAO proto_TestSAO(NULL, v3f(0,0,0));
 103
 104 /*
 105         UnitSAO
 106  */
 107
 108 UnitSAO::UnitSAO(ServerEnvironment *env, v3f pos):
 109         ServerActiveObject(env, pos),
 110         m_hp(-1),
 111         m_yaw(0),
 112         m_properties_sent(true),
 113         m_armor_groups_sent(false),
 114         m_animation_range(0,0),
 115         m_animation_speed(0),
 116         m_animation_blend(0),
 117         m_animation_loop(true),
 118         m_animation_sent(false),
 119         m_bone_position_sent(false),
 120         m_attachment_parent_id(0),
 121         m_attachment_sent(false)
 122 {
 123         // Initialize something to armor groups
 124         m_armor_groups["fleshy"] = 100;
 125 }
 126
 127 bool UnitSAO::isAttached() const
 128 {
 129         if (!m_attachment_parent_id)
 130                 return false;
 131         // Check if the parent still exists
 132         ServerActiveObject *obj = m_env->getActiveObject(m_attachment_parent_id);
 133         if (obj)
 134                 return true;
 135         return false;
 136 }
 137
 138 void UnitSAO::setArmorGroups(const ItemGroupList &armor_groups)
 139 {
 140         m_armor_groups = armor_groups;
 141         m_armor_groups_sent = false;
 142 }
 143
 144 const ItemGroupList &UnitSAO::getArmorGroups()
 145 {
 146         return m_armor_groups;
 147 }
 148
 149 void UnitSAO::setAnimation(v2f frame_range, float frame_speed, float frame_blend, bool frame_loop)
 150 {
 151         // store these so they can be updated to clients
 152         m_animation_range = frame_range;
 153         m_animation_speed = frame_speed;
 154         m_animation_blend = frame_blend;
 155         m_animation_loop = frame_loop;
 156         m_animation_sent = false;
 157 }
 158
 159 void UnitSAO::getAnimation(v2f *frame_range, float *frame_speed, float *frame_blend, bool *frame_loop)
 160 {
 161         *frame_range = m_animation_range;
 162         *frame_speed = m_animation_speed;
 163         *frame_blend = m_animation_blend;
 164         *frame_loop = m_animation_loop;
 165 }
 166
 167 void UnitSAO::setBonePosition(const std::string &bone, v3f position, v3f rotation)
 168 {
 169         // store these so they can be updated to clients
 170         m_bone_position[bone] = core::vector2d<v3f>(position, rotation);
 171         m_bone_position_sent = false;
 172 }
 173
 174 void UnitSAO::getBonePosition(const std::string &bone, v3f *position, v3f *rotation)
 175 {
 176         *position = m_bone_position[bone].X;
 177         *rotation = m_bone_position[bone].Y;
 178 }
 179
 180 void UnitSAO::setAttachment(int parent_id, const std::string &bone, v3f position, v3f rotation)
 181 {
 182         // Attachments need to be handled on both the server and client.
 183         // If we just attach on the server, we can only copy the position of the parent. Attachments
 184         // are still sent to clients at an interval so players might see them lagging, plus we can't
 185         // read and attach to skeletal bones.
 186         // If we just attach on the client, the server still sees the child at its original location.
 187         // This breaks some things so we also give the server the most accurate representation
 188         // even if players only see the client changes.
 189
 190         m_attachment_parent_id = parent_id;
 191         m_attachment_bone = bone;
 192         m_attachment_position = position;
 193         m_attachment_rotation = rotation;
 194         m_attachment_sent = false;
 195 }
 196
 197 void UnitSAO::getAttachment(int *parent_id, std::string *bone, v3f *position,
 198         v3f *rotation)
 199 {
 200         *parent_id = m_attachment_parent_id;
 201         *bone = m_attachment_bone;
 202         *position = m_attachment_position;
 203         *rotation = m_attachment_rotation;
 204 }
 205
 206 void UnitSAO::addAttachmentChild(int child_id)
 207 {
 208         m_attachment_child_ids.insert(child_id);
 209 }
 210
 211 void UnitSAO::removeAttachmentChild(int child_id)
 212 {
 213         m_attachment_child_ids.erase(child_id);
 214 }
 215
 216 const UNORDERED_SET<int> &UnitSAO::getAttachmentChildIds()
 217 {
 218         return m_attachment_child_ids;
 219 }
 220
 221 ObjectProperties* UnitSAO::accessObjectProperties()
 222 {
 223         return &m_prop;
 224 }
 225
 226 void UnitSAO::notifyObjectPropertiesModified()
 227 {
 228         m_properties_sent = false;
 229 }
 230
 231 /*
 232         LuaEntitySAO
 233 */
 234
 235 // Prototype (registers item for deserialization)
 236 LuaEntitySAO proto_LuaEntitySAO(NULL, v3f(0,0,0), "_prototype", "");
 237
 238 LuaEntitySAO::LuaEntitySAO(ServerEnvironment *env, v3f pos,
 239                 const std::string &name, const std::string &state):
 240         UnitSAO(env, pos),
 241         m_init_name(name),
 242         m_init_state(state),
 243         m_registered(false),
 244         m_velocity(0,0,0),
 245         m_acceleration(0,0,0),
 246         m_last_sent_yaw(0),
 247         m_last_sent_position(0,0,0),
 248         m_last_sent_velocity(0,0,0),
 249         m_last_sent_position_timer(0),
 250         m_last_sent_move_precision(0),
 251         m_current_texture_modifier("")
 252 {
 253         // Only register type if no environment supplied
 254         if(env == NULL){
 255                 ServerActiveObject::registerType(getType(), create);
 256                 return;
 257         }
 258 }
 259
 260 LuaEntitySAO::~LuaEntitySAO()
 261 {
 262         if(m_registered){
 263                 m_env->getScriptIface()->luaentity_Remove(m_id);
 264         }
 265
 266         for (UNORDERED_SET<u32>::iterator it = m_attached_particle_spawners.begin();
 267                 it != m_attached_particle_spawners.end(); ++it) {
 268                 m_env->deleteParticleSpawner(*it, false);
 269         }
 270 }
 271
 272 void LuaEntitySAO::addedToEnvironment(u32 dtime_s)
 273 {
 274         ServerActiveObject::addedToEnvironment(dtime_s);
 275
 276         // Create entity from name
 277         m_registered = m_env->getScriptIface()->
 278                 luaentity_Add(m_id, m_init_name.c_str());
 279
 280         if(m_registered){
 281                 // Get properties
 282                 m_env->getScriptIface()->
 283                         luaentity_GetProperties(m_id, &m_prop);
 284                 // Initialize HP from properties
 285                 m_hp = m_prop.hp_max;
 286                 // Activate entity, supplying serialized state
 287                 m_env->getScriptIface()->
 288                         luaentity_Activate(m_id, m_init_state.c_str(), dtime_s);
 289         } else {
 290                 m_prop.infotext = m_init_name;
 291         }
 292 }
 293
 294 ServerActiveObject* LuaEntitySAO::create(ServerEnvironment *env, v3f pos,
 295                 const std::string &data)
 296 {
 297         std::string name;
 298         std::string state;
 299         s16 hp = 1;
 300         v3f velocity;
 301         float yaw = 0;
 302         if(data != ""){
 303                 std::istringstream is(data, std::ios::binary);
 304                 // read version
 305                 u8 version = readU8(is);
 306                 // check if version is supported
 307                 if(version == 0){
 308                         name = deSerializeString(is);
 309                         state = deSerializeLongString(is);
 310                 }
 311                 else if(version == 1){
 312                         name = deSerializeString(is);
 313                         state = deSerializeLongString(is);
 314                         hp = readS16(is);
 315                         velocity = readV3F1000(is);
 316                         yaw = readF1000(is);
 317                 }
 318         }
 319         // create object
 320         infostream<<"LuaEntitySAO::create(name=\""<<name<<"\" state=\""
 321                         <<state<<"\")"<<std::endl;
 322         LuaEntitySAO *sao = new LuaEntitySAO(env, pos, name, state);
 323         sao->m_hp = hp;
 324         sao->m_velocity = velocity;
 325         sao->m_yaw = yaw;
 326         return sao;
 327 }
 328
 329 void LuaEntitySAO::step(float dtime, bool send_recommended)
 330 {
 331         if(!m_properties_sent)
 332         {
 333                 m_properties_sent = true;
 334                 std::string str = getPropertyPacket();
 335                 // create message and add to list
 336                 ActiveObjectMessage aom(getId(), true, str);
 337                 m_messages_out.push(aom);
 338         }
 339
 340         // If attached, check that our parent is still there. If it isn't, detach.
 341         if(m_attachment_parent_id && !isAttached())
 342         {
 343                 m_attachment_parent_id = 0;
 344                 m_attachment_bone = "";
 345                 m_attachment_position = v3f(0,0,0);
 346                 m_attachment_rotation = v3f(0,0,0);
 347                 sendPosition(false, true);
 348         }
 349
 350         m_last_sent_position_timer += dtime;
 351
 352         // Each frame, parent position is copied if the object is attached, otherwise it's calculated normally
 353         // If the object gets detached this comes into effect automatically from the last known origin
 354         if(isAttached())
 355         {
 356                 v3f pos = m_env->getActiveObject(m_attachment_parent_id)->getBasePosition();
 357                 m_base_position = pos;
 358                 m_velocity = v3f(0,0,0);
 359                 m_acceleration = v3f(0,0,0);
 360         }
 361         else
 362         {
 363                 if(m_prop.physical){
 364                         aabb3f box = m_prop.collisionbox;
 365                         box.MinEdge *= BS;
 366                         box.MaxEdge *= BS;
 367                         collisionMoveResult moveresult;
 368                         f32 pos_max_d = BS*0.25; // Distance per iteration
 369                         v3f p_pos = m_base_position;
 370                         v3f p_velocity = m_velocity;
 371                         v3f p_acceleration = m_acceleration;
 372                         moveresult = collisionMoveSimple(m_env, m_env->getGameDef(),
 373                                         pos_max_d, box, m_prop.stepheight, dtime,
 374                                         &p_pos, &p_velocity, p_acceleration,
 375                                         this, m_prop.collideWithObjects);
 376
 377                         // Apply results
 378                         m_base_position = p_pos;
 379                         m_velocity = p_velocity;
 380                         m_acceleration = p_acceleration;
 381                 } else {
 382                         m_base_position += dtime * m_velocity + 0.5 * dtime
 383                                         * dtime * m_acceleration;
 384                         m_velocity += dtime * m_acceleration;
 385                 }
 386
 387                 if((m_prop.automatic_face_movement_dir) &&
 388                                 (fabs(m_velocity.Z) > 0.001 || fabs(m_velocity.X) > 0.001))
 389                 {
 390                         float optimal_yaw = atan2(m_velocity.Z,m_velocity.X) * 180 / M_PI
 391                                         + m_prop.automatic_face_movement_dir_offset;
 392                         float max_rotation_delta =
 393                                         dtime * m_prop.automatic_face_movement_max_rotation_per_sec;
 394
 395                         if ((m_prop.automatic_face_movement_max_rotation_per_sec > 0) &&
 396                                 (fabs(m_yaw - optimal_yaw) > max_rotation_delta)) {
 397
 398                                 m_yaw = optimal_yaw < m_yaw ? m_yaw - max_rotation_delta : m_yaw + max_rotation_delta;
 399                         } else {
 400                                 m_yaw = optimal_yaw;
 401                         }
 402                 }
 403         }
 404
 405         if(m_registered){
 406                 m_env->getScriptIface()->luaentity_Step(m_id, dtime);
 407         }
 408
 409         if(send_recommended == false)
 410                 return;
 411
 412         if(!isAttached())
 413         {
 414                 // TODO: force send when acceleration changes enough?
 415                 float minchange = 0.2*BS;
 416                 if(m_last_sent_position_timer > 1.0){
 417                         minchange = 0.01*BS;
 418                 } else if(m_last_sent_position_timer > 0.2){
 419                         minchange = 0.05*BS;
 420                 }
 421                 float move_d = m_base_position.getDistanceFrom(m_last_sent_position);
 422                 move_d += m_last_sent_move_precision;
 423                 float vel_d = m_velocity.getDistanceFrom(m_last_sent_velocity);
 424                 if(move_d > minchange || vel_d > minchange ||
 425                                 fabs(m_yaw - m_last_sent_yaw) > 1.0){
 426                         sendPosition(true, false);
 427                 }
 428         }
 429
 430         if(m_armor_groups_sent == false){
 431                 m_armor_groups_sent = true;
 432                 std::string str = gob_cmd_update_armor_groups(
 433                                 m_armor_groups);
 434                 // create message and add to list
 435                 ActiveObjectMessage aom(getId(), true, str);
 436                 m_messages_out.push(aom);
 437         }
 438
 439         if(m_animation_sent == false){
 440                 m_animation_sent = true;
 441                 std::string str = gob_cmd_update_animation(
 442                         m_animation_range, m_animation_speed, m_animation_blend, m_animation_loop);
 443                 // create message and add to list
 444                 ActiveObjectMessage aom(getId(), true, str);
 445                 m_messages_out.push(aom);
 446         }
 447
 448         if(m_bone_position_sent == false){
 449                 m_bone_position_sent = true;
 450                 for (UNORDERED_MAP<std::string, core::vector2d<v3f> >::const_iterator
 451                                 ii = m_bone_position.begin(); ii != m_bone_position.end(); ++ii){
 452                         std::string str = gob_cmd_update_bone_position((*ii).first,
 453                                         (*ii).second.X, (*ii).second.Y);
 454                         // create message and add to list
 455                         ActiveObjectMessage aom(getId(), true, str);
 456                         m_messages_out.push(aom);
 457                 }
 458         }
 459
 460         if(m_attachment_sent == false){
 461                 m_attachment_sent = true;
 462                 std::string str = gob_cmd_update_attachment(m_attachment_parent_id, m_attachment_bone, m_attachment_position, m_attachment_rotation);
 463                 // create message and add to list
 464                 ActiveObjectMessage aom(getId(), true, str);
 465                 m_messages_out.push(aom);
 466         }
 467 }
 468
 469 std::string LuaEntitySAO::getClientInitializationData(u16 protocol_version)
 470 {
 471         std::ostringstream os(std::ios::binary);
 472
 473         // protocol >= 14
 474         writeU8(os, 1); // version
 475         os << serializeString(""); // name
 476         writeU8(os, 0); // is_player
 477         writeS16(os, getId()); //id
 478         writeV3F1000(os, m_base_position);
 479         writeF1000(os, m_yaw);
 480         writeS16(os, m_hp);
 481
 482         std::ostringstream msg_os(std::ios::binary);
 483         msg_os << serializeLongString(getPropertyPacket()); // message 1
 484         msg_os << serializeLongString(gob_cmd_update_armor_groups(m_armor_groups)); // 2
 485         msg_os << serializeLongString(gob_cmd_update_animation(
 486                 m_animation_range, m_animation_speed, m_animation_blend, m_animation_loop)); // 3
 487         for (UNORDERED_MAP<std::string, core::vector2d<v3f> >::const_iterator
 488                         ii = m_bone_position.begin(); ii != m_bone_position.end(); ++ii) {
 489                 msg_os << serializeLongString(gob_cmd_update_bone_position((*ii).first,
 490                                 (*ii).second.X, (*ii).second.Y)); // m_bone_position.size
 491         }
 492         msg_os << serializeLongString(gob_cmd_update_attachment(m_attachment_parent_id,
 493                 m_attachment_bone, m_attachment_position, m_attachment_rotation)); // 4
 494         int message_count = 4 + m_bone_position.size();
 495         for (UNORDERED_SET<int>::const_iterator ii = m_attachment_child_ids.begin();
 496                         (ii != m_attachment_child_ids.end()); ++ii) {
 497                 if (ServerActiveObject *obj = m_env->getActiveObject(*ii)) {
 498                         message_count++;
 499                         msg_os << serializeLongString(gob_cmd_update_infant(*ii, obj->getSendType(),
 500                                 obj->getClientInitializationData(protocol_version)));
 501                 }
 502         }
 503
 504         msg_os << serializeLongString(gob_cmd_set_texture_mod(m_current_texture_modifier));
 505         message_count++;
 506
 507         writeU8(os, message_count);
 508         os.write(msg_os.str().c_str(), msg_os.str().size());
 509
 510         // return result
 511         return os.str();
 512 }
 513
 514 void LuaEntitySAO::getStaticData(std::string *result) const
 515 {
 516         verbosestream<<FUNCTION_NAME<<std::endl;
 517         std::ostringstream os(std::ios::binary);
 518         // version
 519         writeU8(os, 1);
 520         // name
 521         os<<serializeString(m_init_name);
 522         // state
 523         if(m_registered){
 524                 std::string state = m_env->getScriptIface()->
 525                         luaentity_GetStaticdata(m_id);
 526                 os<<serializeLongString(state);
 527         } else {
 528                 os<<serializeLongString(m_init_state);
 529         }
 530         // hp
 531         writeS16(os, m_hp);
 532         // velocity
 533         writeV3F1000(os, m_velocity);
 534         // yaw
 535         writeF1000(os, m_yaw);
 536         *result = os.str();
 537 }
 538
 539 int LuaEntitySAO::punch(v3f dir,
 540                 const ToolCapabilities *toolcap,
 541                 ServerActiveObject *puncher,
 542                 float time_from_last_punch)
 543 {
 544         if (!m_registered){
 545                 // Delete unknown LuaEntities when punched
 546                 m_removed = true;
 547                 return 0;
 548         }
 549
 550         // It's best that attachments cannot be punched
 551         if (isAttached())
 552                 return 0;
 553
 554         ItemStack *punchitem = NULL;
 555         ItemStack punchitem_static;
 556         if (puncher) {
 557                 punchitem_static = puncher->getWieldedItem();
 558                 punchitem = &punchitem_static;
 559         }
 560
 561         PunchDamageResult result = getPunchDamage(
 562                         m_armor_groups,
 563                         toolcap,
 564                         punchitem,
 565                         time_from_last_punch);
 566
 567         bool damage_handled = m_env->getScriptIface()->luaentity_Punch(m_id, puncher,
 568                         time_from_last_punch, toolcap, dir, result.did_punch ? result.damage : 0);
 569
 570         if (!damage_handled) {
 571                 if (result.did_punch) {
 572                         setHP(getHP() - result.damage);
 573
 574                         if (result.damage > 0) {
 575                                 std::string punchername = puncher ? puncher->getDescription() : "nil";
 576
 577                                 actionstream << getDescription() << " punched by "
 578                                                 << punchername << ", damage " << result.damage
 579                                                 << " hp, health now " << getHP() << " hp" << std::endl;
 580                         }
 581
 582                         std::string str = gob_cmd_punched(result.damage, getHP());
 583                         // create message and add to list
 584                         ActiveObjectMessage aom(getId(), true, str);
 585                         m_messages_out.push(aom);
 586                 }
 587         }
 588
 589         if (getHP() == 0)
 590                 m_removed = true;
 591
 592
 593
 594         return result.wear;
 595 }
 596
 597 void LuaEntitySAO::rightClick(ServerActiveObject *clicker)
 598 {
 599         if (!m_registered)
 600                 return;
 601         // It's best that attachments cannot be clicked
 602         if (isAttached())
 603                 return;
 604         m_env->getScriptIface()->luaentity_Rightclick(m_id, clicker);
 605 }
 606
 607 void LuaEntitySAO::setPos(const v3f &pos)
 608 {
 609         if(isAttached())
 610                 return;
 611         m_base_position = pos;
 612         sendPosition(false, true);
 613 }
 614
 615 void LuaEntitySAO::moveTo(v3f pos, bool continuous)
 616 {
 617         if(isAttached())
 618                 return;
 619         m_base_position = pos;
 620         if(!continuous)
 621                 sendPosition(true, true);
 622 }
 623
 624 float LuaEntitySAO::getMinimumSavedMovement()
 625 {
 626         return 0.1 * BS;
 627 }
 628
 629 std::string LuaEntitySAO::getDescription()
 630 {
 631         std::ostringstream os(std::ios::binary);
 632         os<<"LuaEntitySAO at (";
 633         os<<(m_base_position.X/BS)<<",";
 634         os<<(m_base_position.Y/BS)<<",";
 635         os<<(m_base_position.Z/BS);
 636         os<<")";
 637         return os.str();
 638 }
 639
 640 void LuaEntitySAO::setHP(s16 hp)
 641 {
 642         if(hp < 0) hp = 0;
 643         m_hp = hp;
 644 }
 645
 646 s16 LuaEntitySAO::getHP() const
 647 {
 648         return m_hp;
 649 }
 650
 651 void LuaEntitySAO::setVelocity(v3f velocity)
 652 {
 653         m_velocity = velocity;
 654 }
 655
 656 v3f LuaEntitySAO::getVelocity()
 657 {
 658         return m_velocity;
 659 }
 660
 661 void LuaEntitySAO::setAcceleration(v3f acceleration)
 662 {
 663         m_acceleration = acceleration;
 664 }
 665
 666 v3f LuaEntitySAO::getAcceleration()
 667 {
 668         return m_acceleration;
 669 }
 670
 671 void LuaEntitySAO::setTextureMod(const std::string &mod)
 672 {
 673         std::string str = gob_cmd_set_texture_mod(mod);
 674         m_current_texture_modifier = mod;
 675         // create message and add to list
 676         ActiveObjectMessage aom(getId(), true, str);
 677         m_messages_out.push(aom);
 678 }
 679
 680 std::string LuaEntitySAO::getTextureMod() const
 681 {
 682         return m_current_texture_modifier;
 683 }
 684
 685 void LuaEntitySAO::setSprite(v2s16 p, int num_frames, float framelength,
 686                 bool select_horiz_by_yawpitch)
 687 {
 688         std::string str = gob_cmd_set_sprite(
 689                 p,
 690                 num_frames,
 691                 framelength,
 692                 select_horiz_by_yawpitch
 693         );
 694         // create message and add to list
 695         ActiveObjectMessage aom(getId(), true, str);
 696         m_messages_out.push(aom);
 697 }
 698
 699 std::string LuaEntitySAO::getName()
 700 {
 701         return m_init_name;
 702 }
 703
 704 std::string LuaEntitySAO::getPropertyPacket()
 705 {
 706         return gob_cmd_set_properties(m_prop);
 707 }
 708
 709 void LuaEntitySAO::sendPosition(bool do_interpolate, bool is_movement_end)
 710 {
 711         // If the object is attached client-side, don't waste bandwidth sending its position to clients
 712         if(isAttached())
 713                 return;
 714
 715         m_last_sent_move_precision = m_base_position.getDistanceFrom(
 716                         m_last_sent_position);
 717         m_last_sent_position_timer = 0;
 718         m_last_sent_yaw = m_yaw;
 719         m_last_sent_position = m_base_position;
 720         m_last_sent_velocity = m_velocity;
 721         //m_last_sent_acceleration = m_acceleration;
 722
 723         float update_interval = m_env->getSendRecommendedInterval();
 724
 725         std::string str = gob_cmd_update_position(
 726                 m_base_position,
 727                 m_velocity,
 728                 m_acceleration,
 729                 m_yaw,
 730                 do_interpolate,
 731                 is_movement_end,
 732                 update_interval
 733         );
 734         // create message and add to list
 735         ActiveObjectMessage aom(getId(), false, str);
 736         m_messages_out.push(aom);
 737 }
 738
 739 bool LuaEntitySAO::getCollisionBox(aabb3f *toset) const
 740 {
 741         if (m_prop.physical)
 742         {
 743                 //update collision box
 744                 toset->MinEdge = m_prop.collisionbox.MinEdge * BS;
 745                 toset->MaxEdge = m_prop.collisionbox.MaxEdge * BS;
 746
 747                 toset->MinEdge += m_base_position;
 748                 toset->MaxEdge += m_base_position;
 749
 750                 return true;
 751         }
 752
 753         return false;
 754 }
 755
 756 bool LuaEntitySAO::collideWithObjects() const
 757 {
 758         return m_prop.collideWithObjects;
 759 }
 760
 761 /*
 762         PlayerSAO
 763 */
 764
 765 // No prototype, PlayerSAO does not need to be deserialized
 766
 767 PlayerSAO::PlayerSAO(ServerEnvironment *env_, u16 peer_id_, bool is_singleplayer):
 768         UnitSAO(env_, v3f(0,0,0)),
 769         m_player(NULL),
 770         m_peer_id(peer_id_),
 771         m_inventory(NULL),
 772         m_damage(0),
 773         m_last_good_position(0,0,0),
 774         m_time_from_last_teleport(0),
 775         m_time_from_last_punch(0),
 776         m_nocheat_dig_pos(32767, 32767, 32767),
 777         m_nocheat_dig_time(0),
 778         m_wield_index(0),
 779         m_position_not_sent(false),
 780         m_is_singleplayer(is_singleplayer),
 781         m_breath(PLAYER_MAX_BREATH),
 782         m_pitch(0),
 783         m_fov(0),
 784         m_wanted_range(0),
 785         m_extended_attributes_modified(false),
 786         // public
 787         m_physics_override_speed(1),
 788         m_physics_override_jump(1),
 789         m_physics_override_gravity(1),
 790         m_physics_override_sneak(true),
 791         m_physics_override_sneak_glitch(true),
 792         m_physics_override_sent(false)
 793 {
 794         assert(m_peer_id != 0); // pre-condition
 795
 796         m_prop.hp_max = PLAYER_MAX_HP;
 797         m_prop.physical = false;
 798         m_prop.weight = 75;
 799         m_prop.collisionbox = aabb3f(-1/3.,-1.0,-1/3., 1/3.,1.0,1/3.);
 800         // start of default appearance, this should be overwritten by LUA
 801         m_prop.visual = "upright_sprite";
 802         m_prop.visual_size = v2f(1, 2);
 803         m_prop.textures.clear();
 804         m_prop.textures.push_back("player.png");
 805         m_prop.textures.push_back("player_back.png");
 806         m_prop.colors.clear();
 807         m_prop.colors.push_back(video::SColor(255, 255, 255, 255));
 808         m_prop.spritediv = v2s16(1,1);
 809         // end of default appearance
 810         m_prop.is_visible = true;
 811         m_prop.makes_footstep_sound = true;
 812         m_hp = PLAYER_MAX_HP;
 813 }
 814
 815 PlayerSAO::~PlayerSAO()
 816 {
 817         if(m_inventory != &m_player->inventory)
 818                 delete m_inventory;
 819 }
 820
 821 void PlayerSAO::initialize(RemotePlayer *player, const std::set<std::string> &privs)
 822 {
 823         assert(player);
 824         m_player = player;
 825         m_privs = privs;
 826         m_inventory = &m_player->inventory;
 827 }
 828
 829 v3f PlayerSAO::getEyeOffset() const
 830 {
 831         return v3f(0, BS * 1.625f, 0);
 832 }
 833
 834 std::string PlayerSAO::getDescription()
 835 {
 836         return std::string("player ") + m_player->getName();
 837 }
 838
 839 // Called after id has been set and has been inserted in environment
 840 void PlayerSAO::addedToEnvironment(u32 dtime_s)
 841 {
 842         ServerActiveObject::addedToEnvironment(dtime_s);
 843         ServerActiveObject::setBasePosition(m_base_position);
 844         m_player->setPlayerSAO(this);
 845         m_player->peer_id = m_peer_id;
 846         m_last_good_position = m_base_position;
 847 }
 848
 849 // Called before removing from environment
 850 void PlayerSAO::removingFromEnvironment()
 851 {
 852         ServerActiveObject::removingFromEnvironment();
 853         if (m_player->getPlayerSAO() == this) {
 854                 unlinkPlayerSessionAndSave();
 855                 for (UNORDERED_SET<u32>::iterator it = m_attached_particle_spawners.begin();
 856                         it != m_attached_particle_spawners.end(); ++it) {
 857                         m_env->deleteParticleSpawner(*it, false);
 858                 }
 859         }
 860 }
 861
 862 std::string PlayerSAO::getClientInitializationData(u16 protocol_version)
 863 {
 864         std::ostringstream os(std::ios::binary);
 865
 866         // Protocol >= 15
 867         writeU8(os, 1); // version
 868         os << serializeString(m_player->getName()); // name
 869         writeU8(os, 1); // is_player
 870         writeS16(os, getId()); //id
 871         writeV3F1000(os, m_base_position + v3f(0,BS*1,0));
 872         writeF1000(os, m_yaw);
 873         writeS16(os, getHP());
 874
 875         std::ostringstream msg_os(std::ios::binary);
 876         msg_os << serializeLongString(getPropertyPacket()); // message 1
 877         msg_os << serializeLongString(gob_cmd_update_armor_groups(m_armor_groups)); // 2
 878         msg_os << serializeLongString(gob_cmd_update_animation(
 879                 m_animation_range, m_animation_speed, m_animation_blend, m_animation_loop)); // 3
 880         for (UNORDERED_MAP<std::string, core::vector2d<v3f> >::const_iterator
 881                         ii = m_bone_position.begin(); ii != m_bone_position.end(); ++ii) {
 882                 msg_os << serializeLongString(gob_cmd_update_bone_position((*ii).first,
 883                         (*ii).second.X, (*ii).second.Y)); // m_bone_position.size
 884         }
 885         msg_os << serializeLongString(gob_cmd_update_attachment(m_attachment_parent_id,
 886                 m_attachment_bone, m_attachment_position, m_attachment_rotation)); // 4
 887         msg_os << serializeLongString(gob_cmd_update_physics_override(m_physics_override_speed,
 888                         m_physics_override_jump, m_physics_override_gravity, m_physics_override_sneak,
 889                         m_physics_override_sneak_glitch)); // 5
 890         // (GENERIC_CMD_UPDATE_NAMETAG_ATTRIBUTES) : Deprecated, for backwards compatibility only.
 891         msg_os << serializeLongString(gob_cmd_update_nametag_attributes(m_prop.nametag_color)); // 6
 892         int message_count = 6 + m_bone_position.size();
 893         for (UNORDERED_SET<int>::const_iterator ii = m_attachment_child_ids.begin();
 894                         ii != m_attachment_child_ids.end(); ++ii) {
 895                 if (ServerActiveObject *obj = m_env->getActiveObject(*ii)) {
 896                         message_count++;
 897                         msg_os << serializeLongString(gob_cmd_update_infant(*ii, obj->getSendType(),
 898                                 obj->getClientInitializationData(protocol_version)));
 899                 }
 900         }
 901
 902         writeU8(os, message_count);
 903         os.write(msg_os.str().c_str(), msg_os.str().size());
 904
 905         // return result
 906         return os.str();
 907 }
 908
 909 void PlayerSAO::getStaticData(std::string *result) const
 910 {
 911         FATAL_ERROR("Deprecated function");
 912 }
 913
 914 void PlayerSAO::step(float dtime, bool send_recommended)
 915 {
 916         if (m_drowning_interval.step(dtime, 2.0)) {
 917                 // get head position
 918                 v3s16 p = floatToInt(m_base_position + v3f(0, BS * 1.6, 0), BS);
 919                 MapNode n = m_env->getMap().getNodeNoEx(p);
 920                 const ContentFeatures &c = m_env->getGameDef()->ndef()->get(n);
 921                 // If node generates drown
 922                 if (c.drowning > 0 && m_hp > 0) {
 923                         if (m_breath > 0)
 924                                 setBreath(m_breath - 1);
 925
 926                         // No more breath, damage player
 927                         if (m_breath == 0) {
 928                                 setHP(m_hp - c.drowning);
 929                                 m_env->getGameDef()->SendPlayerHPOrDie(this);
 930                         }
 931                 }
 932         }
 933
 934         if (m_breathing_interval.step(dtime, 0.5)) {
 935                 // get head position
 936                 v3s16 p = floatToInt(m_base_position + v3f(0, BS * 1.6, 0), BS);
 937                 MapNode n = m_env->getMap().getNodeNoEx(p);
 938                 const ContentFeatures &c = m_env->getGameDef()->ndef()->get(n);
 939                 // If player is alive & no drowning, breath
 940                 if (m_hp > 0 && m_breath < PLAYER_MAX_BREATH && c.drowning == 0)
 941                         setBreath(m_breath + 1);
 942         }
 943
 944         if (!m_properties_sent) {
 945                 m_properties_sent = true;
 946                 std::string str = getPropertyPacket();
 947                 // create message and add to list
 948                 ActiveObjectMessage aom(getId(), true, str);
 949                 m_messages_out.push(aom);
 950         }
 951
 952         // If attached, check that our parent is still there. If it isn't, detach.
 953         if(m_attachment_parent_id && !isAttached())
 954         {
 955                 m_attachment_parent_id = 0;
 956                 m_attachment_bone = "";
 957                 m_attachment_position = v3f(0,0,0);
 958                 m_attachment_rotation = v3f(0,0,0);
 959                 setBasePosition(m_last_good_position);
 960                 m_env->getGameDef()->SendMovePlayer(m_peer_id);
 961         }
 962
 963         //dstream<<"PlayerSAO::step: dtime: "<<dtime<<std::endl;
 964
 965         // Set lag pool maximums based on estimated lag
 966         const float LAG_POOL_MIN = 5.0;
 967         float lag_pool_max = m_env->getMaxLagEstimate() * 2.0;
 968         if(lag_pool_max < LAG_POOL_MIN)
 969                 lag_pool_max = LAG_POOL_MIN;
 970         m_dig_pool.setMax(lag_pool_max);
 971         m_move_pool.setMax(lag_pool_max);
 972
 973         // Increment cheat prevention timers
 974         m_dig_pool.add(dtime);
 975         m_move_pool.add(dtime);
 976         m_time_from_last_teleport += dtime;
 977         m_time_from_last_punch += dtime;
 978         m_nocheat_dig_time += dtime;
 979
 980         // Each frame, parent position is copied if the object is attached, otherwise it's calculated normally
 981         // If the object gets detached this comes into effect automatically from the last known origin
 982         if (isAttached()) {
 983                 v3f pos = m_env->getActiveObject(m_attachment_parent_id)->getBasePosition();
 984                 m_last_good_position = pos;
 985                 setBasePosition(pos);
 986         }
 987
 988         if (!send_recommended)
 989                 return;
 990
 991         // If the object is attached client-side, don't waste bandwidth sending its position to clients
 992         if(m_position_not_sent && !isAttached())
 993         {
 994                 m_position_not_sent = false;
 995                 float update_interval = m_env->getSendRecommendedInterval();
 996                 v3f pos;
 997                 if(isAttached()) // Just in case we ever do send attachment position too
 998                         pos = m_env->getActiveObject(m_attachment_parent_id)->getBasePosition();
 999                 else
1000                         pos = m_base_position + v3f(0,BS*1,0);
1001                 std::string str = gob_cmd_update_position(
1002                         pos,
1003                         v3f(0,0,0),
1004                         v3f(0,0,0),
1005                         m_yaw,
1006                         true,
1007                         false,
1008                         update_interval
1009                 );
1010                 // create message and add to list
1011                 ActiveObjectMessage aom(getId(), false, str);
1012                 m_messages_out.push(aom);
1013         }
1014
1015         if (!m_armor_groups_sent) {
1016                 m_armor_groups_sent = true;
1017                 std::string str = gob_cmd_update_armor_groups(
1018                                 m_armor_groups);
1019                 // create message and add to list
1020                 ActiveObjectMessage aom(getId(), true, str);
1021                 m_messages_out.push(aom);
1022         }
1023
1024         if (!m_physics_override_sent) {
1025                 m_physics_override_sent = true;
1026                 std::string str = gob_cmd_update_physics_override(m_physics_override_speed,
1027                                 m_physics_override_jump, m_physics_override_gravity,
1028                                 m_physics_override_sneak, m_physics_override_sneak_glitch);
1029                 // create message and add to list
1030                 ActiveObjectMessage aom(getId(), true, str);
1031                 m_messages_out.push(aom);
1032         }
1033
1034         if (!m_animation_sent) {
1035                 m_animation_sent = true;
1036                 std::string str = gob_cmd_update_animation(
1037                         m_animation_range, m_animation_speed, m_animation_blend, m_animation_loop);
1038                 // create message and add to list
1039                 ActiveObjectMessage aom(getId(), true, str);
1040                 m_messages_out.push(aom);
1041         }
1042
1043         if (!m_bone_position_sent) {
1044                 m_bone_position_sent = true;
1045                 for (UNORDERED_MAP<std::string, core::vector2d<v3f> >::const_iterator
1046                                 ii = m_bone_position.begin(); ii != m_bone_position.end(); ++ii) {
1047                         std::string str = gob_cmd_update_bone_position((*ii).first,
1048                                         (*ii).second.X, (*ii).second.Y);
1049                         // create message and add to list
1050                         ActiveObjectMessage aom(getId(), true, str);
1051                         m_messages_out.push(aom);
1052                 }
1053         }
1054
1055         if (!m_attachment_sent){
1056                 m_attachment_sent = true;
1057                 std::string str = gob_cmd_update_attachment(m_attachment_parent_id,
1058                                 m_attachment_bone, m_attachment_position, m_attachment_rotation);
1059                 // create message and add to list
1060                 ActiveObjectMessage aom(getId(), true, str);
1061                 m_messages_out.push(aom);
1062         }
1063 }
1064
1065 void PlayerSAO::setBasePosition(const v3f &position)
1066 {
1067         if (m_player && position != m_base_position)
1068                 m_player->setDirty(true);
1069
1070         // This needs to be ran for attachments too
1071         ServerActiveObject::setBasePosition(position);
1072         m_position_not_sent = true;
1073 }
1074
1075 void PlayerSAO::setPos(const v3f &pos)
1076 {
1077         if(isAttached())
1078                 return;
1079
1080         setBasePosition(pos);
1081         // Movement caused by this command is always valid
1082         m_last_good_position = pos;
1083         m_move_pool.empty();
1084         m_time_from_last_teleport = 0.0;
1085         m_env->getGameDef()->SendMovePlayer(m_peer_id);
1086 }
1087
1088 void PlayerSAO::moveTo(v3f pos, bool continuous)
1089 {
1090         if(isAttached())
1091                 return;
1092
1093         setBasePosition(pos);
1094         // Movement caused by this command is always valid
1095         m_last_good_position = pos;
1096         m_move_pool.empty();
1097         m_time_from_last_teleport = 0.0;
1098         m_env->getGameDef()->SendMovePlayer(m_peer_id);
1099 }
1100
1101 void PlayerSAO::setYaw(const float yaw)
1102 {
1103         if (m_player && yaw != m_yaw)
1104                 m_player->setDirty(true);
1105
1106         UnitSAO::setYaw(yaw);
1107 }
1108
1109 void PlayerSAO::setFov(const float fov)
1110 {
1111         if (m_player && fov != m_fov)
1112                 m_player->setDirty(true);
1113
1114         m_fov = fov;
1115 }
1116
1117 void PlayerSAO::setWantedRange(const s16 range)
1118 {
1119         if (m_player && range != m_wanted_range)
1120                 m_player->setDirty(true);
1121
1122         m_wanted_range = range;
1123 }
1124
1125 void PlayerSAO::setYawAndSend(const float yaw)
1126 {
1127         setYaw(yaw);
1128         m_env->getGameDef()->SendMovePlayer(m_peer_id);
1129 }
1130
1131 void PlayerSAO::setPitch(const float pitch)
1132 {
1133         if (m_player && pitch != m_pitch)
1134                 m_player->setDirty(true);
1135
1136         m_pitch = pitch;
1137 }
1138
1139 void PlayerSAO::setPitchAndSend(const float pitch)
1140 {
1141         setPitch(pitch);
1142         m_env->getGameDef()->SendMovePlayer(m_peer_id);
1143 }
1144
1145 int PlayerSAO::punch(v3f dir,
1146         const ToolCapabilities *toolcap,
1147         ServerActiveObject *puncher,
1148         float time_from_last_punch)
1149 {
1150         // It's best that attachments cannot be punched
1151         if (isAttached())
1152                 return 0;
1153
1154         if (!toolcap)
1155                 return 0;
1156
1157         // No effect if PvP disabled
1158         if (g_settings->getBool("enable_pvp") == false) {
1159                 if (puncher->getType() == ACTIVEOBJECT_TYPE_PLAYER) {
1160                         std::string str = gob_cmd_punched(0, getHP());
1161                         // create message and add to list
1162                         ActiveObjectMessage aom(getId(), true, str);
1163                         m_messages_out.push(aom);
1164                         return 0;
1165                 }
1166         }
1167
1168         HitParams hitparams = getHitParams(m_armor_groups, toolcap,
1169                         time_from_last_punch);
1170
1171         std::string punchername = "nil";
1172
1173         if (puncher != 0)
1174                 punchername = puncher->getDescription();
1175
1176         PlayerSAO *playersao = m_player->getPlayerSAO();
1177
1178         bool damage_handled = m_env->getScriptIface()->on_punchplayer(playersao,
1179                                 puncher, time_from_last_punch, toolcap, dir,
1180                                 hitparams.hp);
1181
1182         if (!damage_handled) {
1183                 setHP(getHP() - hitparams.hp);
1184         } else { // override client prediction
1185                 if (puncher->getType() == ACTIVEOBJECT_TYPE_PLAYER) {
1186                         std::string str = gob_cmd_punched(0, getHP());
1187                         // create message and add to list
1188                         ActiveObjectMessage aom(getId(), true, str);
1189                         m_messages_out.push(aom);
1190                 }
1191         }
1192
1193
1194         actionstream << "Player " << m_player->getName() << " punched by "
1195                         << punchername;
1196         if (!damage_handled) {
1197                 actionstream << ", damage " << hitparams.hp << " HP";
1198         } else {
1199                 actionstream << ", damage handled by lua";
1200         }
1201         actionstream << std::endl;
1202
1203         return hitparams.wear;
1204 }
1205
1206 s16 PlayerSAO::readDamage()
1207 {
1208         s16 damage = m_damage;
1209         m_damage = 0;
1210         return damage;
1211 }
1212
1213 void PlayerSAO::setHP(s16 hp)
1214 {
1215         s16 oldhp = m_hp;
1216
1217         s16 hp_change = m_env->getScriptIface()->on_player_hpchange(this, hp - oldhp);
1218         if (hp_change == 0)
1219                 return;
1220         hp = oldhp + hp_change;
1221
1222         if (hp < 0)
1223                 hp = 0;
1224         else if (hp > PLAYER_MAX_HP)
1225                 hp = PLAYER_MAX_HP;
1226
1227         if (hp < oldhp && !g_settings->getBool("enable_damage")) {
1228                 return;
1229         }
1230
1231         m_hp = hp;
1232
1233         if (oldhp > hp)
1234                 m_damage += (oldhp - hp);
1235
1236         // Update properties on death
1237         if ((hp == 0) != (oldhp == 0))
1238                 m_properties_sent = false;
1239 }
1240
1241 void PlayerSAO::setBreath(const u16 breath, bool send)
1242 {
1243         if (m_player && breath != m_breath)
1244                 m_player->setDirty(true);
1245
1246         m_breath = MYMIN(breath, PLAYER_MAX_BREATH);
1247
1248         if (send)
1249                 m_env->getGameDef()->SendPlayerBreath(this);
1250 }
1251
1252 Inventory* PlayerSAO::getInventory()
1253 {
1254         return m_inventory;
1255 }
1256 const Inventory* PlayerSAO::getInventory() const
1257 {
1258         return m_inventory;
1259 }
1260
1261 InventoryLocation PlayerSAO::getInventoryLocation() const
1262 {
1263         InventoryLocation loc;
1264         loc.setPlayer(m_player->getName());
1265         return loc;
1266 }
1267
1268 std::string PlayerSAO::getWieldList() const
1269 {
1270         return "main";
1271 }
1272
1273 ItemStack PlayerSAO::getWieldedItem() const
1274 {
1275         const Inventory *inv = getInventory();
1276         ItemStack ret;
1277         const InventoryList *mlist = inv->getList(getWieldList());
1278         if (mlist && getWieldIndex() < (s32)mlist->getSize())
1279                 ret = mlist->getItem(getWieldIndex());
1280         return ret;
1281 }
1282
1283 ItemStack PlayerSAO::getWieldedItemOrHand() const
1284 {
1285         const Inventory *inv = getInventory();
1286         ItemStack ret;
1287         const InventoryList *mlist = inv->getList(getWieldList());
1288         if (mlist && getWieldIndex() < (s32)mlist->getSize())
1289                 ret = mlist->getItem(getWieldIndex());
1290         if (ret.name.empty()) {
1291                 const InventoryList *hlist = inv->getList("hand");
1292                 if (hlist)
1293                         ret = hlist->getItem(0);
1294         }
1295         return ret;
1296 }
1297
1298 bool PlayerSAO::setWieldedItem(const ItemStack &item)
1299 {
1300         Inventory *inv = getInventory();
1301         if (inv) {
1302                 InventoryList *mlist = inv->getList(getWieldList());
1303                 if (mlist) {
1304                         mlist->changeItem(getWieldIndex(), item);
1305                         return true;
1306                 }
1307         }
1308         return false;
1309 }
1310
1311 int PlayerSAO::getWieldIndex() const
1312 {
1313         return m_wield_index;
1314 }
1315
1316 void PlayerSAO::setWieldIndex(int i)
1317 {
1318         if(i != m_wield_index) {
1319                 m_wield_index = i;
1320         }
1321 }
1322
1323 // Erase the peer id and make the object for removal
1324 void PlayerSAO::disconnected()
1325 {
1326         m_peer_id = 0;
1327         m_removed = true;
1328 }
1329
1330 void PlayerSAO::unlinkPlayerSessionAndSave()
1331 {
1332         assert(m_player->getPlayerSAO() == this);
1333         m_player->peer_id = 0;
1334         m_env->savePlayer(m_player);
1335         m_player->setPlayerSAO(NULL);
1336         m_env->removePlayer(m_player);
1337 }
1338
1339 std::string PlayerSAO::getPropertyPacket()
1340 {
1341         m_prop.is_visible = (true);
1342         return gob_cmd_set_properties(m_prop);
1343 }
1344
1345 bool PlayerSAO::checkMovementCheat()
1346 {
1347         if (isAttached() || m_is_singleplayer ||
1348                         g_settings->getBool("disable_anticheat")) {
1349                 m_last_good_position = m_base_position;
1350                 return false;
1351         }
1352
1353         bool cheated = false;
1354         /*
1355                 Check player movements
1356
1357                 NOTE: Actually the server should handle player physics like the
1358                 client does and compare player's position to what is calculated
1359                 on our side. This is required when eg. players fly due to an
1360                 explosion. Altough a node-based alternative might be possible
1361                 too, and much more lightweight.
1362         */
1363
1364         float player_max_speed = 0;
1365
1366         if (m_privs.count("fast") != 0) {
1367                 // Fast speed
1368                 player_max_speed = m_player->movement_speed_fast * m_physics_override_speed;
1369         } else {
1370                 // Normal speed
1371                 player_max_speed = m_player->movement_speed_walk * m_physics_override_speed;
1372         }
1373         // Tolerance. The lag pool does this a bit.
1374         //player_max_speed *= 2.5;
1375
1376         v3f diff = (m_base_position - m_last_good_position);
1377         float d_vert = diff.Y;
1378         diff.Y = 0;
1379         float d_horiz = diff.getLength();
1380         float required_time = d_horiz / player_max_speed;
1381
1382         if (d_vert > 0 && d_vert / player_max_speed > required_time)
1383                 required_time = d_vert / player_max_speed; // Moving upwards
1384
1385         if (m_move_pool.grab(required_time)) {
1386                 m_last_good_position = m_base_position;
1387         } else {
1388                 const float LAG_POOL_MIN = 5.0;
1389                 float lag_pool_max = m_env->getMaxLagEstimate() * 2.0;
1390                 lag_pool_max = MYMAX(lag_pool_max, LAG_POOL_MIN);
1391                 if (m_time_from_last_teleport > lag_pool_max) {
1392                         actionstream << "Player " << m_player->getName()
1393                                         << " moved too fast; resetting position"
1394                                         << std::endl;
1395                         cheated = true;
1396                 }
1397                 setBasePosition(m_last_good_position);
1398         }
1399         return cheated;
1400 }
1401
1402 bool PlayerSAO::getCollisionBox(aabb3f *toset) const
1403 {
1404         *toset = aabb3f(-BS * 0.30, 0.0, -BS * 0.30, BS * 0.30, BS * 1.75, BS * 0.30);
1405         toset->MinEdge += m_base_position;
1406         toset->MaxEdge += m_base_position;
1407         return true;
1408 }