src/client.h

   1 /*
   2 Minetest
   3 Copyright (C) 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 #ifndef CLIENT_HEADER
  21 #define CLIENT_HEADER
  22
  23 #include "network/connection.h"
  24 #include "environment.h"
  25 #include "irrlichttypes_extrabloated.h"
  26 #include "threading/mutex.h"
  27 #include <ostream>
  28 #include <map>
  29 #include <set>
  30 #include <vector>
  31 #include "clientobject.h"
  32 #include "gamedef.h"
  33 #include "inventorymanager.h"
  34 #include "localplayer.h"
  35 #include "hud.h"
  36 #include "particles.h"
  37 #include "network/networkpacket.h"
  38
  39 struct MeshMakeData;
  40 class MapBlockMesh;
  41 class IWritableTextureSource;
  42 class IWritableShaderSource;
  43 class IWritableItemDefManager;
  44 class IWritableNodeDefManager;
  45 //class IWritableCraftDefManager;
  46 class ClientMediaDownloader;
  47 struct MapDrawControl;
  48 class MtEventManager;
  49 struct PointedThing;
  50 class Database;
  51 class Mapper;
  52 struct MinimapMapblock;
  53 class Camera;
  54
  55 struct QueuedMeshUpdate
  56 {
  57         v3s16 p;
  58         MeshMakeData *data;
  59         bool ack_block_to_server;
  60
  61         QueuedMeshUpdate();
  62         ~QueuedMeshUpdate();
  63 };
  64
  65 enum LocalClientState {
  66         LC_Created,
  67         LC_Init,
  68         LC_Ready
  69 };
  70
  71 /*
  72         A thread-safe queue of mesh update tasks
  73 */
  74 class MeshUpdateQueue
  75 {
  76 public:
  77         MeshUpdateQueue();
  78
  79         ~MeshUpdateQueue();
  80
  81         /*
  82                 peer_id=0 adds with nobody to send to
  83         */
  84         void addBlock(v3s16 p, MeshMakeData *data,
  85                         bool ack_block_to_server, bool urgent);
  86
  87         // Returned pointer must be deleted
  88         // Returns NULL if queue is empty
  89         QueuedMeshUpdate * pop();
  90
  91         u32 size()
  92         {
  93                 MutexAutoLock lock(m_mutex);
  94                 return m_queue.size();
  95         }
  96
  97 private:
  98         std::vector<QueuedMeshUpdate*> m_queue;
  99         std::set<v3s16> m_urgents;
 100         Mutex m_mutex;
 101 };
 102
 103 struct MeshUpdateResult
 104 {
 105         v3s16 p;
 106         MapBlockMesh *mesh;
 107         bool ack_block_to_server;
 108
 109         MeshUpdateResult():
 110                 p(-1338,-1338,-1338),
 111                 mesh(NULL),
 112                 ack_block_to_server(false)
 113         {
 114         }
 115 };
 116
 117 class MeshUpdateThread : public UpdateThread
 118 {
 119 private:
 120         MeshUpdateQueue m_queue_in;
 121
 122 protected:
 123         virtual void doUpdate();
 124
 125 public:
 126
 127         MeshUpdateThread() : UpdateThread("Mesh") {}
 128
 129         void enqueueUpdate(v3s16 p, MeshMakeData *data,
 130                         bool ack_block_to_server, bool urgent);
 131         MutexedQueue<MeshUpdateResult> m_queue_out;
 132
 133         v3s16 m_camera_offset;
 134 };
 135
 136 enum ClientEventType
 137 {
 138         CE_NONE,
 139         CE_PLAYER_DAMAGE,
 140         CE_PLAYER_FORCE_MOVE,
 141         CE_DEATHSCREEN,
 142         CE_SHOW_FORMSPEC,
 143         CE_SPAWN_PARTICLE,
 144         CE_ADD_PARTICLESPAWNER,
 145         CE_DELETE_PARTICLESPAWNER,
 146         CE_HUDADD,
 147         CE_HUDRM,
 148         CE_HUDCHANGE,
 149         CE_SET_SKY,
 150         CE_OVERRIDE_DAY_NIGHT_RATIO,
 151 };
 152
 153 struct ClientEvent
 154 {
 155         ClientEventType type;
 156         union{
 157                 //struct{
 158                 //} none;
 159                 struct{
 160                         u8 amount;
 161                 } player_damage;
 162                 struct{
 163                         f32 pitch;
 164                         f32 yaw;
 165                 } player_force_move;
 166                 struct{
 167                         bool set_camera_point_target;
 168                         f32 camera_point_target_x;
 169                         f32 camera_point_target_y;
 170                         f32 camera_point_target_z;
 171                 } deathscreen;
 172                 struct{
 173                         std::string *formspec;
 174                         std::string *formname;
 175                 } show_formspec;
 176                 //struct{
 177                 //} textures_updated;
 178                 struct{
 179                         v3f *pos;
 180                         v3f *vel;
 181                         v3f *acc;
 182                         f32 expirationtime;
 183                         f32 size;
 184                         bool collisiondetection;
 185                         bool collision_removal;
 186                         bool vertical;
 187                         std::string *texture;
 188                 } spawn_particle;
 189                 struct{
 190                         u16 amount;
 191                         f32 spawntime;
 192                         v3f *minpos;
 193                         v3f *maxpos;
 194                         v3f *minvel;
 195                         v3f *maxvel;
 196                         v3f *minacc;
 197                         v3f *maxacc;
 198                         f32 minexptime;
 199                         f32 maxexptime;
 200                         f32 minsize;
 201                         f32 maxsize;
 202                         bool collisiondetection;
 203                         bool collision_removal;
 204                         bool vertical;
 205                         std::string *texture;
 206                         u32 id;
 207                 } add_particlespawner;
 208                 struct{
 209                         u32 id;
 210                 } delete_particlespawner;
 211                 struct{
 212                         u32 id;
 213                         u8 type;
 214                         v2f *pos;
 215                         std::string *name;
 216                         v2f *scale;
 217                         std::string *text;
 218                         u32 number;
 219                         u32 item;
 220                         u32 dir;
 221                         v2f *align;
 222                         v2f *offset;
 223                         v3f *world_pos;
 224                         v2s32 * size;
 225                 } hudadd;
 226                 struct{
 227                         u32 id;
 228                 } hudrm;
 229                 struct{
 230                         u32 id;
 231                         HudElementStat stat;
 232                         v2f *v2fdata;
 233                         std::string *sdata;
 234                         u32 data;
 235                         v3f *v3fdata;
 236                         v2s32 * v2s32data;
 237                 } hudchange;
 238                 struct{
 239                         video::SColor *bgcolor;
 240                         std::string *type;
 241                         std::vector<std::string> *params;
 242                 } set_sky;
 243                 struct{
 244                         bool do_override;
 245                         float ratio_f;
 246                 } override_day_night_ratio;
 247         };
 248 };
 249
 250 /*
 251         Packet counter
 252 */
 253
 254 class PacketCounter
 255 {
 256 public:
 257         PacketCounter()
 258         {
 259         }
 260
 261         void add(u16 command)
 262         {
 263                 std::map<u16, u16>::iterator n = m_packets.find(command);
 264                 if(n == m_packets.end())
 265                 {
 266                         m_packets[command] = 1;
 267                 }
 268                 else
 269                 {
 270                         n->second++;
 271                 }
 272         }
 273
 274         void clear()
 275         {
 276                 for(std::map<u16, u16>::iterator
 277                                 i = m_packets.begin();
 278                                 i != m_packets.end(); ++i)
 279                 {
 280                         i->second = 0;
 281                 }
 282         }
 283
 284         void print(std::ostream &o)
 285         {
 286                 for(std::map<u16, u16>::iterator
 287                                 i = m_packets.begin();
 288                                 i != m_packets.end(); ++i)
 289                 {
 290                         o<<"cmd "<<i->first
 291                                         <<" count "<<i->second
 292                                         <<std::endl;
 293                 }
 294         }
 295
 296 private:
 297         // command, count
 298         std::map<u16, u16> m_packets;
 299 };
 300
 301 class Client : public con::PeerHandler, public InventoryManager, public IGameDef
 302 {
 303 public:
 304         /*
 305                 NOTE: Nothing is thread-safe here.
 306         */
 307
 308         Client(
 309                         IrrlichtDevice *device,
 310                         const char *playername,
 311                         std::string password,
 312                         MapDrawControl &control,
 313                         IWritableTextureSource *tsrc,
 314                         IWritableShaderSource *shsrc,
 315                         IWritableItemDefManager *itemdef,
 316                         IWritableNodeDefManager *nodedef,
 317                         ISoundManager *sound,
 318                         MtEventManager *event,
 319                         bool ipv6
 320         );
 321
 322         ~Client();
 323
 324         /*
 325          request all threads managed by client to be stopped
 326          */
 327         void Stop();
 328
 329
 330         bool isShutdown();
 331
 332         /*
 333                 The name of the local player should already be set when
 334                 calling this, as it is sent in the initialization.
 335         */
 336         void connect(Address address,
 337                         const std::string &address_name,
 338                         bool is_local_server);
 339
 340         /*
 341                 Stuff that references the environment is valid only as
 342                 long as this is not called. (eg. Players)
 343                 If this throws a PeerNotFoundException, the connection has
 344                 timed out.
 345         */
 346         void step(float dtime);
 347
 348         /*
 349          * Command Handlers
 350          */
 351
 352         void handleCommand(NetworkPacket* pkt);
 353
 354         void handleCommand_Null(NetworkPacket* pkt) {};
 355         void handleCommand_Deprecated(NetworkPacket* pkt);
 356         void handleCommand_Hello(NetworkPacket* pkt);
 357         void handleCommand_AuthAccept(NetworkPacket* pkt);
 358         void handleCommand_AcceptSudoMode(NetworkPacket* pkt);
 359         void handleCommand_DenySudoMode(NetworkPacket* pkt);
 360         void handleCommand_InitLegacy(NetworkPacket* pkt);
 361         void handleCommand_AccessDenied(NetworkPacket* pkt);
 362         void handleCommand_RemoveNode(NetworkPacket* pkt);
 363         void handleCommand_AddNode(NetworkPacket* pkt);
 364         void handleCommand_BlockData(NetworkPacket* pkt);
 365         void handleCommand_Inventory(NetworkPacket* pkt);
 366         void handleCommand_TimeOfDay(NetworkPacket* pkt);
 367         void handleCommand_ChatMessage(NetworkPacket* pkt);
 368         void handleCommand_ActiveObjectRemoveAdd(NetworkPacket* pkt);
 369         void handleCommand_ActiveObjectMessages(NetworkPacket* pkt);
 370         void handleCommand_Movement(NetworkPacket* pkt);
 371         void handleCommand_HP(NetworkPacket* pkt);
 372         void handleCommand_Breath(NetworkPacket* pkt);
 373         void handleCommand_MovePlayer(NetworkPacket* pkt);
 374         void handleCommand_PlayerItem(NetworkPacket* pkt);
 375         void handleCommand_DeathScreen(NetworkPacket* pkt);
 376         void handleCommand_AnnounceMedia(NetworkPacket* pkt);
 377         void handleCommand_Media(NetworkPacket* pkt);
 378         void handleCommand_ToolDef(NetworkPacket* pkt);
 379         void handleCommand_NodeDef(NetworkPacket* pkt);
 380         void handleCommand_CraftItemDef(NetworkPacket* pkt);
 381         void handleCommand_ItemDef(NetworkPacket* pkt);
 382         void handleCommand_PlaySound(NetworkPacket* pkt);
 383         void handleCommand_StopSound(NetworkPacket* pkt);
 384         void handleCommand_Privileges(NetworkPacket* pkt);
 385         void handleCommand_InventoryFormSpec(NetworkPacket* pkt);
 386         void handleCommand_DetachedInventory(NetworkPacket* pkt);
 387         void handleCommand_ShowFormSpec(NetworkPacket* pkt);
 388         void handleCommand_SpawnParticle(NetworkPacket* pkt);
 389         void handleCommand_AddParticleSpawner(NetworkPacket* pkt);
 390         void handleCommand_DeleteParticleSpawner(NetworkPacket* pkt);
 391         void handleCommand_HudAdd(NetworkPacket* pkt);
 392         void handleCommand_HudRemove(NetworkPacket* pkt);
 393         void handleCommand_HudChange(NetworkPacket* pkt);
 394         void handleCommand_HudSetFlags(NetworkPacket* pkt);
 395         void handleCommand_HudSetParam(NetworkPacket* pkt);
 396         void handleCommand_HudSetSky(NetworkPacket* pkt);
 397         void handleCommand_OverrideDayNightRatio(NetworkPacket* pkt);
 398         void handleCommand_LocalPlayerAnimations(NetworkPacket* pkt);
 399         void handleCommand_EyeOffset(NetworkPacket* pkt);
 400         void handleCommand_SrpBytesSandB(NetworkPacket* pkt);
 401
 402         void ProcessData(NetworkPacket *pkt);
 403
 404         // Returns true if something was received
 405         bool AsyncProcessPacket();
 406         bool AsyncProcessData();
 407         void Send(NetworkPacket* pkt);
 408
 409         void interact(u8 action, const PointedThing& pointed);
 410
 411         void sendNodemetaFields(v3s16 p, const std::string &formname,
 412                 const StringMap &fields);
 413         void sendInventoryFields(const std::string &formname,
 414                 const StringMap &fields);
 415         void sendInventoryAction(InventoryAction *a);
 416         void sendChatMessage(const std::wstring &message);
 417         void sendChangePassword(const std::string &oldpassword,
 418                 const std::string &newpassword);
 419         void sendDamage(u8 damage);
 420         void sendBreath(u16 breath);
 421         void sendRespawn();
 422         void sendReady();
 423
 424         ClientEnvironment& getEnv()
 425         { return m_env; }
 426
 427         // Causes urgent mesh updates (unlike Map::add/removeNodeWithEvent)
 428         void removeNode(v3s16 p);
 429         void addNode(v3s16 p, MapNode n, bool remove_metadata = true);
 430
 431         void setPlayerControl(PlayerControl &control);
 432
 433         void selectPlayerItem(u16 item);
 434         u16 getPlayerItem() const
 435         { return m_playeritem; }
 436
 437         // Returns true if the inventory of the local player has been
 438         // updated from the server. If it is true, it is set to false.
 439         bool getLocalInventoryUpdated();
 440         // Copies the inventory of the local player to parameter
 441         void getLocalInventory(Inventory &dst);
 442
 443         /* InventoryManager interface */
 444         Inventory* getInventory(const InventoryLocation &loc);
 445         void inventoryAction(InventoryAction *a);
 446
 447         // Gets closest object pointed by the shootline
 448         // Returns NULL if not found
 449         ClientActiveObject * getSelectedActiveObject(
 450                         f32 max_d,
 451                         v3f from_pos_f_on_map,
 452                         core::line3d<f32> shootline_on_map
 453         );
 454
 455         std::list<std::string> getConnectedPlayerNames();
 456
 457         float getAnimationTime();
 458
 459         int getCrackLevel();
 460         void setCrack(int level, v3s16 pos);
 461
 462         u16 getHP();
 463
 464         bool checkPrivilege(const std::string &priv) const
 465         { return (m_privileges.count(priv) != 0); }
 466
 467         bool getChatMessage(std::wstring &message);
 468         void typeChatMessage(const std::wstring& message);
 469
 470         u64 getMapSeed(){ return m_map_seed; }
 471
 472         void addUpdateMeshTask(v3s16 blockpos, bool ack_to_server=false, bool urgent=false);
 473         // Including blocks at appropriate edges
 474         void addUpdateMeshTaskWithEdge(v3s16 blockpos, bool ack_to_server=false, bool urgent=false);
 475         void addUpdateMeshTaskForNode(v3s16 nodepos, bool ack_to_server=false, bool urgent=false);
 476
 477         void updateCameraOffset(v3s16 camera_offset)
 478         { m_mesh_update_thread.m_camera_offset = camera_offset; }
 479
 480         // Get event from queue. CE_NONE is returned if queue is empty.
 481         ClientEvent getClientEvent();
 482
 483         bool accessDenied()
 484         { return m_access_denied; }
 485
 486         bool reconnectRequested() { return m_access_denied_reconnect; }
 487
 488         std::string accessDeniedReason()
 489         { return m_access_denied_reason; }
 490
 491         bool itemdefReceived()
 492         { return m_itemdef_received; }
 493         bool nodedefReceived()
 494         { return m_nodedef_received; }
 495         bool mediaReceived()
 496         { return m_media_downloader == NULL; }
 497
 498         u8 getProtoVersion()
 499         { return m_proto_ver; }
 500
 501         bool connectedToServer()
 502         { return m_con.Connected(); }
 503
 504         float mediaReceiveProgress();
 505
 506         void afterContentReceived(IrrlichtDevice *device);
 507
 508         float getRTT(void);
 509         float getCurRate(void);
 510         float getAvgRate(void);
 511
 512         Mapper* getMapper ()
 513         { return m_mapper; }
 514
 515         void setCamera(Camera* camera)
 516         { m_camera = camera; }
 517
 518         Camera* getCamera ()
 519         { return m_camera; }
 520
 521         bool isMinimapDisabledByServer()
 522         { return m_minimap_disabled_by_server; }
 523
 524         // IGameDef interface
 525         virtual IItemDefManager* getItemDefManager();
 526         virtual INodeDefManager* getNodeDefManager();
 527         virtual ICraftDefManager* getCraftDefManager();
 528         virtual ITextureSource* getTextureSource();
 529         virtual IShaderSource* getShaderSource();
 530         virtual scene::ISceneManager* getSceneManager();
 531         virtual u16 allocateUnknownNodeId(const std::string &name);
 532         virtual ISoundManager* getSoundManager();
 533         virtual MtEventManager* getEventManager();
 534         virtual ParticleManager* getParticleManager();
 535         virtual bool checkLocalPrivilege(const std::string &priv)
 536         { return checkPrivilege(priv); }
 537         virtual scene::IAnimatedMesh* getMesh(const std::string &filename);
 538
 539         // The following set of functions is used by ClientMediaDownloader
 540         // Insert a media file appropriately into the appropriate manager
 541         bool loadMedia(const std::string &data, const std::string &filename);
 542         // Send a request for conventional media transfer
 543         void request_media(const std::vector<std::string> &file_requests);
 544         // Send a notification that no conventional media transfer is needed
 545         void received_media();
 546
 547         LocalClientState getState() { return m_state; }
 548
 549         void makeScreenshot(IrrlichtDevice *device);
 550
 551 private:
 552
 553         // Virtual methods from con::PeerHandler
 554         void peerAdded(con::Peer *peer);
 555         void deletingPeer(con::Peer *peer, bool timeout);
 556
 557         void initLocalMapSaving(const Address &address,
 558                         const std::string &hostname,
 559                         bool is_local_server);
 560
 561         void ReceiveAll();
 562         void Receive();
 563
 564         void sendPlayerPos();
 565         // Send the item number 'item' as player item to the server
 566         void sendPlayerItem(u16 item);
 567
 568         void deleteAuthData();
 569         // helper method shared with clientpackethandler
 570         static AuthMechanism choseAuthMech(const u32 mechs);
 571
 572         void sendLegacyInit(const char* playerName, const char* playerPassword);
 573         void sendInit(const std::string &playerName);
 574         void startAuth(AuthMechanism chosen_auth_mechanism);
 575         void sendDeletedBlocks(std::vector<v3s16> &blocks);
 576         void sendGotBlocks(v3s16 block);
 577         void sendRemovedSounds(std::vector<s32> &soundList);
 578
 579         // Helper function
 580         inline std::string getPlayerName()
 581         { return m_env.getLocalPlayer()->getName(); }
 582
 583         float m_packetcounter_timer;
 584         float m_connection_reinit_timer;
 585         float m_avg_rtt_timer;
 586         float m_playerpos_send_timer;
 587         float m_ignore_damage_timer; // Used after server moves player
 588         IntervalLimiter m_map_timer_and_unload_interval;
 589
 590         IWritableTextureSource *m_tsrc;
 591         IWritableShaderSource *m_shsrc;
 592         IWritableItemDefManager *m_itemdef;
 593         IWritableNodeDefManager *m_nodedef;
 594         ISoundManager *m_sound;
 595         MtEventManager *m_event;
 596
 597
 598         MeshUpdateThread m_mesh_update_thread;
 599         ClientEnvironment m_env;
 600         ParticleManager m_particle_manager;
 601         con::Connection m_con;
 602         IrrlichtDevice *m_device;
 603         Camera *m_camera;
 604         Mapper *m_mapper;
 605         bool m_minimap_disabled_by_server;
 606         // Server serialization version
 607         u8 m_server_ser_ver;
 608
 609         // Used version of the protocol with server
 610         // Values smaller than 25 only mean they are smaller than 25,
 611         // and aren't accurate. We simply just don't know, because
 612         // the server didn't send the version back then.
 613         // If 0, server init hasn't been received yet.
 614         u8 m_proto_ver;
 615
 616         u16 m_playeritem;
 617         bool m_inventory_updated;
 618         Inventory *m_inventory_from_server;
 619         float m_inventory_from_server_age;
 620         PacketCounter m_packetcounter;
 621         // Block mesh animation parameters
 622         float m_animation_time;
 623         int m_crack_level;
 624         v3s16 m_crack_pos;
 625         // 0 <= m_daynight_i < DAYNIGHT_CACHE_COUNT
 626         //s32 m_daynight_i;
 627         //u32 m_daynight_ratio;
 628         std::queue<std::wstring> m_chat_queue;
 629
 630         // The authentication methods we can use to enter sudo mode (=change password)
 631         u32 m_sudo_auth_methods;
 632
 633         // The seed returned by the server in TOCLIENT_INIT is stored here
 634         u64 m_map_seed;
 635
 636         // Auth data
 637         std::string m_playername;
 638         std::string m_password;
 639         // If set, this will be sent (and cleared) upon a TOCLIENT_ACCEPT_SUDO_MODE
 640         std::string m_new_password;
 641         // Usable by auth mechanisms.
 642         AuthMechanism m_chosen_auth_mech;
 643         void * m_auth_data;
 644
 645
 646         bool m_access_denied;
 647         bool m_access_denied_reconnect;
 648         std::string m_access_denied_reason;
 649         std::queue<ClientEvent> m_client_event_queue;
 650         bool m_itemdef_received;
 651         bool m_nodedef_received;
 652         ClientMediaDownloader *m_media_downloader;
 653
 654         // time_of_day speed approximation for old protocol
 655         bool m_time_of_day_set;
 656         float m_last_time_of_day_f;
 657         float m_time_of_day_update_timer;
 658
 659         // An interval for generally sending object positions and stuff
 660         float m_recommended_send_interval;
 661
 662         // Sounds
 663         float m_removed_sounds_check_timer;
 664         // Mapping from server sound ids to our sound ids
 665         UNORDERED_MAP<s32, int> m_sounds_server_to_client;
 666         // And the other way!
 667         UNORDERED_MAP<int, s32> m_sounds_client_to_server;
 668         // And relations to objects
 669         UNORDERED_MAP<int, u16> m_sounds_to_objects;
 670
 671         // Privileges
 672         UNORDERED_SET<std::string> m_privileges;
 673
 674         // Detached inventories
 675         // key = name
 676         UNORDERED_MAP<std::string, Inventory*> m_detached_inventories;
 677
 678         // Storage for mesh data for creating multiple instances of the same mesh
 679         StringMap m_mesh_data;
 680
 681         // own state
 682         LocalClientState m_state;
 683
 684         // Used for saving server map to disk client-side
 685         Database *m_localdb;
 686         IntervalLimiter m_localdb_save_interval;
 687         u16 m_cache_save_interval;
 688
 689         // TODO: Add callback to update these when g_settings changes
 690         bool m_cache_smooth_lighting;
 691         bool m_cache_enable_shaders;
 692         bool m_cache_use_tangent_vertices;
 693
 694         DISABLE_CLASS_COPY(Client);
 695 };
 696
 697 #endif // !CLIENT_HEADER