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 "connection.h"
  24 #include "environment.h"
  25 #include "irrlichttypes_extrabloated.h"
  26 #include "jthread/jmutex.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
  38 struct MeshMakeData;
  39 class MapBlockMesh;
  40 class IWritableTextureSource;
  41 class IWritableShaderSource;
  42 class IWritableItemDefManager;
  43 class IWritableNodeDefManager;
  44 //class IWritableCraftDefManager;
  45 class ClientMediaDownloader;
  46 struct MapDrawControl;
  47 class MtEventManager;
  48 struct PointedThing;
  49
  50 struct QueuedMeshUpdate
  51 {
  52         v3s16 p;
  53         MeshMakeData *data;
  54         bool ack_block_to_server;
  55
  56         QueuedMeshUpdate();
  57         ~QueuedMeshUpdate();
  58 };
  59
  60 enum LocalClientState {
  61         LC_Created,
  62         LC_Init,
  63         LC_Ready
  64 };
  65
  66 /*
  67         A thread-safe queue of mesh update tasks
  68 */
  69 class MeshUpdateQueue
  70 {
  71 public:
  72         MeshUpdateQueue();
  73
  74         ~MeshUpdateQueue();
  75
  76         /*
  77                 peer_id=0 adds with nobody to send to
  78         */
  79         void addBlock(v3s16 p, MeshMakeData *data,
  80                         bool ack_block_to_server, bool urgent);
  81
  82         // Returned pointer must be deleted
  83         // Returns NULL if queue is empty
  84         QueuedMeshUpdate * pop();
  85
  86         u32 size()
  87         {
  88                 JMutexAutoLock lock(m_mutex);
  89                 return m_queue.size();
  90         }
  91
  92 private:
  93         std::vector<QueuedMeshUpdate*> m_queue;
  94         std::set<v3s16> m_urgents;
  95         JMutex m_mutex;
  96 };
  97
  98 struct MeshUpdateResult
  99 {
 100         v3s16 p;
 101         MapBlockMesh *mesh;
 102         bool ack_block_to_server;
 103
 104         MeshUpdateResult():
 105                 p(-1338,-1338,-1338),
 106                 mesh(NULL),
 107                 ack_block_to_server(false)
 108         {
 109         }
 110 };
 111
 112 class MeshUpdateThread : public JThread
 113 {
 114 public:
 115
 116         MeshUpdateThread(IGameDef *gamedef):
 117                 m_gamedef(gamedef)
 118         {
 119         }
 120
 121         void * Thread();
 122
 123         MeshUpdateQueue m_queue_in;
 124
 125         MutexedQueue<MeshUpdateResult> m_queue_out;
 126
 127         IGameDef *m_gamedef;
 128
 129         v3s16 m_camera_offset;
 130 };
 131
 132 enum ClientEventType
 133 {
 134         CE_NONE,
 135         CE_PLAYER_DAMAGE,
 136         CE_PLAYER_FORCE_MOVE,
 137         CE_DEATHSCREEN,
 138         CE_SHOW_FORMSPEC,
 139         CE_SPAWN_PARTICLE,
 140         CE_ADD_PARTICLESPAWNER,
 141         CE_DELETE_PARTICLESPAWNER,
 142         CE_HUDADD,
 143         CE_HUDRM,
 144         CE_HUDCHANGE,
 145         CE_SET_SKY,
 146         CE_OVERRIDE_DAY_NIGHT_RATIO,
 147 };
 148
 149 struct ClientEvent
 150 {
 151         ClientEventType type;
 152         union{
 153                 struct{
 154                 } none;
 155                 struct{
 156                         u8 amount;
 157                 } player_damage;
 158                 struct{
 159                         f32 pitch;
 160                         f32 yaw;
 161                 } player_force_move;
 162                 struct{
 163                         bool set_camera_point_target;
 164                         f32 camera_point_target_x;
 165                         f32 camera_point_target_y;
 166                         f32 camera_point_target_z;
 167                 } deathscreen;
 168                 struct{
 169                         std::string *formspec;
 170                         std::string *formname;
 171                 } show_formspec;
 172                 struct{
 173                 } textures_updated;
 174                 struct{
 175                         v3f *pos;
 176                         v3f *vel;
 177                         v3f *acc;
 178                         f32 expirationtime;
 179                         f32 size;
 180                         bool collisiondetection;
 181                         bool vertical;
 182                         std::string *texture;
 183                 } spawn_particle;
 184                 struct{
 185                         u16 amount;
 186                         f32 spawntime;
 187                         v3f *minpos;
 188                         v3f *maxpos;
 189                         v3f *minvel;
 190                         v3f *maxvel;
 191                         v3f *minacc;
 192                         v3f *maxacc;
 193                         f32 minexptime;
 194                         f32 maxexptime;
 195                         f32 minsize;
 196                         f32 maxsize;
 197                         bool collisiondetection;
 198                         bool vertical;
 199                         std::string *texture;
 200                         u32 id;
 201                 } add_particlespawner;
 202                 struct{
 203                         u32 id;
 204                 } delete_particlespawner;
 205                 struct{
 206                         u32 id;
 207                         u8 type;
 208                         v2f *pos;
 209                         std::string *name;
 210                         v2f *scale;
 211                         std::string *text;
 212                         u32 number;
 213                         u32 item;
 214                         u32 dir;
 215                         v2f *align;
 216                         v2f *offset;
 217                         v3f *world_pos;
 218                         v2s32 * size;
 219                 } hudadd;
 220                 struct{
 221                         u32 id;
 222                 } hudrm;
 223                 struct{
 224                         u32 id;
 225                         HudElementStat stat;
 226                         v2f *v2fdata;
 227                         std::string *sdata;
 228                         u32 data;
 229                         v3f *v3fdata;
 230                         v2s32 * v2s32data;
 231                 } hudchange;
 232                 struct{
 233                         video::SColor *bgcolor;
 234                         std::string *type;
 235                         std::vector<std::string> *params;
 236                 } set_sky;
 237                 struct{
 238                         bool do_override;
 239                         float ratio_f;
 240                 } override_day_night_ratio;
 241         };
 242 };
 243
 244 /*
 245         Packet counter
 246 */
 247
 248 class PacketCounter
 249 {
 250 public:
 251         PacketCounter()
 252         {
 253         }
 254
 255         void add(u16 command)
 256         {
 257                 std::map<u16, u16>::iterator n = m_packets.find(command);
 258                 if(n == m_packets.end())
 259                 {
 260                         m_packets[command] = 1;
 261                 }
 262                 else
 263                 {
 264                         n->second++;
 265                 }
 266         }
 267
 268         void clear()
 269         {
 270                 for(std::map<u16, u16>::iterator
 271                                 i = m_packets.begin();
 272                                 i != m_packets.end(); ++i)
 273                 {
 274                         i->second = 0;
 275                 }
 276         }
 277
 278         void print(std::ostream &o)
 279         {
 280                 for(std::map<u16, u16>::iterator
 281                                 i = m_packets.begin();
 282                                 i != m_packets.end(); ++i)
 283                 {
 284                         o<<"cmd "<<i->first
 285                                         <<" count "<<i->second
 286                                         <<std::endl;
 287                 }
 288         }
 289
 290 private:
 291         // command, count
 292         std::map<u16, u16> m_packets;
 293 };
 294
 295 class Client : public con::PeerHandler, public InventoryManager, public IGameDef
 296 {
 297 public:
 298         /*
 299                 NOTE: Nothing is thread-safe here.
 300         */
 301
 302         Client(
 303                         IrrlichtDevice *device,
 304                         const char *playername,
 305                         std::string password,
 306                         MapDrawControl &control,
 307                         IWritableTextureSource *tsrc,
 308                         IWritableShaderSource *shsrc,
 309                         IWritableItemDefManager *itemdef,
 310                         IWritableNodeDefManager *nodedef,
 311                         ISoundManager *sound,
 312                         MtEventManager *event,
 313                         bool ipv6
 314         );
 315
 316         ~Client();
 317
 318         /*
 319          request all threads managed by client to be stopped
 320          */
 321         void Stop();
 322
 323
 324         bool isShutdown();
 325         /*
 326                 The name of the local player should already be set when
 327                 calling this, as it is sent in the initialization.
 328         */
 329         void connect(Address address);
 330
 331         /*
 332                 Stuff that references the environment is valid only as
 333                 long as this is not called. (eg. Players)
 334                 If this throws a PeerNotFoundException, the connection has
 335                 timed out.
 336         */
 337         void step(float dtime);
 338
 339         void ProcessData(u8 *data, u32 datasize, u16 sender_peer_id);
 340         // Returns true if something was received
 341         bool AsyncProcessPacket();
 342         bool AsyncProcessData();
 343         void Send(u16 channelnum, SharedBuffer<u8> data, bool reliable);
 344
 345         void interact(u8 action, const PointedThing& pointed);
 346
 347         void sendNodemetaFields(v3s16 p, const std::string &formname,
 348                         const std::map<std::string, std::string> &fields);
 349         void sendInventoryFields(const std::string &formname,
 350                         const std::map<std::string, std::string> &fields);
 351         void sendInventoryAction(InventoryAction *a);
 352         void sendChatMessage(const std::wstring &message);
 353         void sendChangePassword(const std::wstring &oldpassword,
 354                                 const std::wstring &newpassword);
 355         void sendDamage(u8 damage);
 356         void sendBreath(u16 breath);
 357         void sendRespawn();
 358         void sendReady();
 359
 360         ClientEnvironment& getEnv()
 361         { return m_env; }
 362
 363         // Causes urgent mesh updates (unlike Map::add/removeNodeWithEvent)
 364         void removeNode(v3s16 p);
 365         void addNode(v3s16 p, MapNode n, bool remove_metadata = true);
 366
 367         void setPlayerControl(PlayerControl &control);
 368
 369         void selectPlayerItem(u16 item);
 370         u16 getPlayerItem() const
 371         { return m_playeritem; }
 372
 373         // Returns true if the inventory of the local player has been
 374         // updated from the server. If it is true, it is set to false.
 375         bool getLocalInventoryUpdated();
 376         // Copies the inventory of the local player to parameter
 377         void getLocalInventory(Inventory &dst);
 378
 379         /* InventoryManager interface */
 380         Inventory* getInventory(const InventoryLocation &loc);
 381         void inventoryAction(InventoryAction *a);
 382
 383         // Gets closest object pointed by the shootline
 384         // Returns NULL if not found
 385         ClientActiveObject * getSelectedActiveObject(
 386                         f32 max_d,
 387                         v3f from_pos_f_on_map,
 388                         core::line3d<f32> shootline_on_map
 389         );
 390
 391         std::list<std::string> getConnectedPlayerNames();
 392
 393         float getAnimationTime();
 394
 395         int getCrackLevel();
 396         void setCrack(int level, v3s16 pos);
 397
 398         u16 getHP();
 399         u16 getBreath();
 400
 401         bool checkPrivilege(const std::string &priv)
 402         { return (m_privileges.count(priv) != 0); }
 403
 404         bool getChatMessage(std::wstring &message);
 405         void typeChatMessage(const std::wstring& message);
 406
 407         u64 getMapSeed(){ return m_map_seed; }
 408
 409         void addUpdateMeshTask(v3s16 blockpos, bool ack_to_server=false, bool urgent=false);
 410         // Including blocks at appropriate edges
 411         void addUpdateMeshTaskWithEdge(v3s16 blockpos, bool ack_to_server=false, bool urgent=false);
 412         void addUpdateMeshTaskForNode(v3s16 nodepos, bool ack_to_server=false, bool urgent=false);
 413
 414         void updateCameraOffset(v3s16 camera_offset)
 415         { m_mesh_update_thread.m_camera_offset = camera_offset; }
 416
 417         // Get event from queue. CE_NONE is returned if queue is empty.
 418         ClientEvent getClientEvent();
 419
 420         bool accessDenied()
 421         { return m_access_denied; }
 422
 423         std::wstring accessDeniedReason()
 424         { return m_access_denied_reason; }
 425
 426         bool itemdefReceived()
 427         { return m_itemdef_received; }
 428         bool nodedefReceived()
 429         { return m_nodedef_received; }
 430         bool mediaReceived()
 431         { return m_media_downloader == NULL; }
 432
 433         float mediaReceiveProgress();
 434
 435         void afterContentReceived(IrrlichtDevice *device, gui::IGUIFont* font);
 436
 437         float getRTT(void);
 438         float getCurRate(void);
 439         float getAvgRate(void);
 440
 441         // IGameDef interface
 442         virtual IItemDefManager* getItemDefManager();
 443         virtual INodeDefManager* getNodeDefManager();
 444         virtual ICraftDefManager* getCraftDefManager();
 445         virtual ITextureSource* getTextureSource();
 446         virtual IShaderSource* getShaderSource();
 447         virtual u16 allocateUnknownNodeId(const std::string &name);
 448         virtual ISoundManager* getSoundManager();
 449         virtual MtEventManager* getEventManager();
 450         virtual bool checkLocalPrivilege(const std::string &priv)
 451         { return checkPrivilege(priv); }
 452         virtual scene::IAnimatedMesh* getMesh(const std::string &filename);
 453
 454         // The following set of functions is used by ClientMediaDownloader
 455         // Insert a media file appropriately into the appropriate manager
 456         bool loadMedia(const std::string &data, const std::string &filename);
 457         // Send a request for conventional media transfer
 458         void request_media(const std::list<std::string> &file_requests);
 459         // Send a notification that no conventional media transfer is needed
 460         void received_media();
 461
 462         LocalClientState getState() { return m_state; }
 463
 464 private:
 465
 466         // Virtual methods from con::PeerHandler
 467         void peerAdded(con::Peer *peer);
 468         void deletingPeer(con::Peer *peer, bool timeout);
 469
 470         void ReceiveAll();
 471         void Receive();
 472
 473         void sendPlayerPos();
 474         // Send the item number 'item' as player item to the server
 475         void sendPlayerItem(u16 item);
 476
 477         float m_packetcounter_timer;
 478         float m_connection_reinit_timer;
 479         float m_avg_rtt_timer;
 480         float m_playerpos_send_timer;
 481         float m_ignore_damage_timer; // Used after server moves player
 482         IntervalLimiter m_map_timer_and_unload_interval;
 483
 484         IWritableTextureSource *m_tsrc;
 485         IWritableShaderSource *m_shsrc;
 486         IWritableItemDefManager *m_itemdef;
 487         IWritableNodeDefManager *m_nodedef;
 488         ISoundManager *m_sound;
 489         MtEventManager *m_event;
 490
 491         MeshUpdateThread m_mesh_update_thread;
 492         ClientEnvironment m_env;
 493         con::Connection m_con;
 494         IrrlichtDevice *m_device;
 495         // Server serialization version
 496         u8 m_server_ser_ver;
 497         u16 m_playeritem;
 498         bool m_inventory_updated;
 499         Inventory *m_inventory_from_server;
 500         float m_inventory_from_server_age;
 501         std::set<v3s16> m_active_blocks;
 502         PacketCounter m_packetcounter;
 503         // Block mesh animation parameters
 504         float m_animation_time;
 505         int m_crack_level;
 506         v3s16 m_crack_pos;
 507         // 0 <= m_daynight_i < DAYNIGHT_CACHE_COUNT
 508         //s32 m_daynight_i;
 509         //u32 m_daynight_ratio;
 510         Queue<std::wstring> m_chat_queue;
 511         // The seed returned by the server in TOCLIENT_INIT is stored here
 512         u64 m_map_seed;
 513         std::string m_password;
 514         bool m_access_denied;
 515         std::wstring m_access_denied_reason;
 516         Queue<ClientEvent> m_client_event_queue;
 517         bool m_itemdef_received;
 518         bool m_nodedef_received;
 519         ClientMediaDownloader *m_media_downloader;
 520
 521         // time_of_day speed approximation for old protocol
 522         bool m_time_of_day_set;
 523         float m_last_time_of_day_f;
 524         float m_time_of_day_update_timer;
 525
 526         // An interval for generally sending object positions and stuff
 527         float m_recommended_send_interval;
 528
 529         // Sounds
 530         float m_removed_sounds_check_timer;
 531         // Mapping from server sound ids to our sound ids
 532         std::map<s32, int> m_sounds_server_to_client;
 533         // And the other way!
 534         std::map<int, s32> m_sounds_client_to_server;
 535         // And relations to objects
 536         std::map<int, u16> m_sounds_to_objects;
 537
 538         // Privileges
 539         std::set<std::string> m_privileges;
 540
 541         // Detached inventories
 542         // key = name
 543         std::map<std::string, Inventory*> m_detached_inventories;
 544
 545         // Storage for mesh data for creating multiple instances of the same mesh
 546         std::map<std::string, std::string> m_mesh_data;
 547
 548         // own state
 549         LocalClientState m_state;
 550 };
 551
 552 #endif // !CLIENT_HEADER
 553