src/client/client.cpp

   1 #include "ChunkRequester.hpp"
   2 #include "InitialState.hpp"
   3 #include "InteractiveState.hpp"
   4 #include "MasterState.hpp"
   5
   6 #include "../app/Environment.hpp"
   7 #include "../app/init.hpp"
   8 #include "../app/TextureIndex.hpp"
   9 #include "../model/CompositeModel.hpp"
  10 #include "../io/WorldSave.hpp"
  11 #include "../world/ChunkIndex.hpp"
  12 #include "../world/ChunkStore.hpp"
  13
  14 #include <iostream>
  15 #include <glm/gtx/io.hpp>
  16
  17 using namespace std;
  18
  19
  20 namespace blank {
  21 namespace client {
  22
  23 ChunkRequester::ChunkRequester(
  24         ChunkStore &store,
  25         const WorldSave &save
  26 ) noexcept
  27 : store(store)
  28 , save(save) {
  29
  30 }
  31
  32 void ChunkRequester::Update(int dt) {
  33         // check if there's chunks waiting to be loaded
  34         LoadN(10);
  35
  36         // store a few chunks as well
  37         constexpr int max_save = 10;
  38         int saved = 0;
  39         for (Chunk &chunk : store) {
  40                 if (chunk.ShouldUpdateSave()) {
  41                         save.Write(chunk);
  42                         ++saved;
  43                         if (saved >= max_save) {
  44                                 break;
  45                         }
  46                 }
  47         }
  48 }
  49
  50 int ChunkRequester::ToLoad() const noexcept {
  51         return store.EstimateMissing();
  52 }
  53
  54 void ChunkRequester::LoadOne() {
  55         if (!store.HasMissing()) return;
  56
  57         Chunk::Pos pos = store.NextMissing();
  58         Chunk *chunk = store.Allocate(pos);
  59         if (!chunk) {
  60                 // chunk store corrupted?
  61                 return;
  62         }
  63
  64         if (save.Exists(pos)) {
  65                 save.Read(*chunk);
  66                 // TODO: request chunk from server with cache tag
  67         } else {
  68                 // TODO: request chunk from server
  69         }
  70 }
  71
  72 void ChunkRequester::LoadN(std::size_t n) {
  73         std::size_t end = std::min(n, std::size_t(ToLoad()));
  74         for (std::size_t i = 0; i < end && store.HasMissing(); ++i) {
  75                 LoadOne();
  76         }
  77 }
  78
  79
  80 InitialState::InitialState(MasterState &master)
  81 : master(master)
  82 , message() {
  83         message.Position(glm::vec3(0.0f), Gravity::CENTER);
  84         message.Set(master.GetEnv().assets.large_ui_font, "logging in");
  85 }
  86
  87 void InitialState::OnEnter() {
  88
  89 }
  90
  91 void InitialState::Handle(const SDL_Event &evt) {
  92         if (evt.type == SDL_QUIT) {
  93                 master.Quit();
  94         }
  95 }
  96
  97 void InitialState::Update(int dt) {
  98         master.Update(dt);
  99 }
 100
 101 void InitialState::Render(Viewport &viewport) {
 102         message.Render(viewport);
 103 }
 104
 105
 106 // TODO: this clutter is a giant mess
 107 InteractiveState::InteractiveState(MasterState &master, uint32_t player_id)
 108 : master(master)
 109 , block_types()
 110 , save(master.GetEnv().config.GetWorldPath(master.GetWorldConf().name, master.GetConfig().net.host))
 111 , world(block_types, master.GetWorldConf())
 112 , player(*world.AddPlayer(master.GetConfig().player.name))
 113 , hud(master.GetEnv(), master.GetConfig(), player)
 114 , manip(master.GetEnv(), player.GetEntity())
 115 , input(world, player, master.GetClient())
 116 , interface(master.GetConfig(), master.GetEnv().keymap, input, *this)
 117 // TODO: looks like chunk requester and receiver can and should be merged
 118 , chunk_requester(world.Chunks(), save)
 119 , chunk_receiver(world.Chunks())
 120 , chunk_renderer(player.GetChunks())
 121 , skeletons()
 122 , loop_timer(16)
 123 , sky(master.GetEnv().loader.LoadCubeMap("skybox")) {
 124         if (!save.Exists()) {
 125                 save.Write(master.GetWorldConf());
 126         }
 127         TextureIndex tex_index;
 128         master.GetEnv().loader.LoadBlockTypes("default", block_types, tex_index);
 129         interface.SetInventorySlots(block_types.Size() - 1);
 130         chunk_renderer.LoadTextures(master.GetEnv().loader, tex_index);
 131         chunk_renderer.FogDensity(master.GetWorldConf().fog_density);
 132         skeletons.Load();
 133         loop_timer.Start();
 134         if (save.Exists(player)) {
 135                 save.Read(player);
 136         }
 137 }
 138
 139 void InteractiveState::OnEnter() {
 140         master.GetEnv().window.GrabMouse();
 141 }
 142
 143 void InteractiveState::Handle(const SDL_Event &event) {
 144         switch (event.type) {
 145                 case SDL_KEYDOWN:
 146                         interface.HandlePress(event.key);
 147                         break;
 148                 case SDL_KEYUP:
 149                         interface.HandleRelease(event.key);
 150                         break;
 151                 case SDL_MOUSEBUTTONDOWN:
 152                         interface.HandlePress(event.button);
 153                         break;
 154                 case SDL_MOUSEBUTTONUP:
 155                         interface.HandleRelease(event.button);
 156                         break;
 157                 case SDL_MOUSEMOTION:
 158                         interface.Handle(event.motion);
 159                         break;
 160                 case SDL_MOUSEWHEEL:
 161                         interface.Handle(event.wheel);
 162                         break;
 163                 case SDL_QUIT:
 164                         Exit();
 165                         break;
 166                 default:
 167                         break;
 168         }
 169 }
 170
 171 void InteractiveState::Update(int dt) {
 172         input.Update(dt);
 173         if (input.BlockFocus()) {
 174                 hud.FocusBlock(input.BlockFocus().GetChunk(), input.BlockFocus().block);
 175         } else if (input.EntityFocus()) {
 176                 hud.FocusEntity(*input.EntityFocus().entity);
 177         } else {
 178                 hud.FocusNone();
 179         }
 180         hud.Display(block_types[player.GetInventorySlot() + 1]);
 181         loop_timer.Update(dt);
 182         master.Update(dt);
 183         chunk_receiver.Update(dt);
 184         chunk_requester.Update(dt);
 185
 186         hud.Update(dt);
 187         int world_dt = 0;
 188         while (loop_timer.HitOnce()) {
 189                 world.Update(loop_timer.Interval());
 190                 world_dt += loop_timer.Interval();
 191                 loop_timer.PopIteration();
 192         }
 193         chunk_renderer.Update(dt);
 194
 195         if (world_dt > 0) {
 196                 input.PushPlayerUpdate(world_dt);
 197         }
 198
 199         glm::mat4 trans = player.GetEntity().Transform(player.GetEntity().ChunkCoords());
 200         glm::vec3 dir(trans * glm::vec4(0.0f, 0.0f, -1.0f, 0.0f));
 201         glm::vec3 up(trans * glm::vec4(0.0f, 1.0f, 0.0f, 0.0f));
 202         master.GetEnv().audio.Position(player.GetEntity().Position());
 203         master.GetEnv().audio.Velocity(player.GetEntity().Velocity());
 204         master.GetEnv().audio.Orientation(dir, up);
 205 }
 206
 207 void InteractiveState::Render(Viewport &viewport) {
 208         viewport.WorldPosition(player.GetEntity().Transform(player.GetEntity().ChunkCoords()));
 209         if (master.GetConfig().video.world) {
 210                 chunk_renderer.Render(viewport);
 211                 world.Render(viewport);
 212                 sky.Render(viewport);
 213         }
 214         hud.Render(viewport);
 215 }
 216
 217 void InteractiveState::MergePlayerCorrection(std::uint16_t pack, const EntityState &state) {
 218         input.MergePlayerCorrection(pack, state);
 219 }
 220
 221 void InteractiveState::Handle(const Packet::BlockUpdate &pack) {
 222         glm::ivec3 pos;
 223         pack.ReadChunkCoords(pos);
 224         Chunk *chunk = player.GetChunks().Get(pos);
 225         if (!chunk) {
 226                 // this change doesn't concern us
 227                 return;
 228         }
 229         uint32_t count = 0;
 230         pack.ReadBlockCount(count);
 231         for (uint32_t i = 0; i < count; ++i) {
 232                 uint16_t index;
 233                 Block block;
 234                 pack.ReadIndex(index, i);
 235                 pack.ReadBlock(block, i);
 236                 if (index < Chunk::size && block.type < block_types.Size()) {
 237                         manip.SetBlock(*chunk, index, block);
 238                 }
 239         }
 240 }
 241
 242 void InteractiveState::SetAudio(bool b) {
 243         master.GetConfig().audio.enabled = b;
 244         if (b) {
 245                 hud.PostMessage("Audio enabled");
 246         } else {
 247                 hud.PostMessage("Audio disabled");
 248         }
 249 }
 250
 251 void InteractiveState::SetVideo(bool b) {
 252         master.GetConfig().video.world = b;
 253         if (b) {
 254                 hud.PostMessage("World rendering enabled");
 255         } else {
 256                 hud.PostMessage("World rendering disabled");
 257         }
 258 }
 259
 260 void InteractiveState::SetHUD(bool b) {
 261         master.GetConfig().video.hud = b;
 262         if (b) {
 263                 hud.PostMessage("HUD rendering enabled");
 264         } else {
 265                 hud.PostMessage("HUD rendering disabled");
 266         }
 267 }
 268
 269 void InteractiveState::SetDebug(bool b) {
 270         master.GetConfig().video.debug = b;
 271         if (b) {
 272                 hud.PostMessage("Debug rendering enabled");
 273         } else {
 274                 hud.PostMessage("Debug rendering disabled");
 275         }
 276 }
 277
 278 void InteractiveState::Exit() {
 279         save.Write(player);
 280         master.Quit();
 281 }
 282
 283
 284 MasterState::MasterState(
 285         Environment &env,
 286         Config &config,
 287         const World::Config &wc)
 288 : env(env)
 289 , config(config)
 290 , world_conf(wc)
 291 , state()
 292 , client(config.net)
 293 , init_state(*this)
 294 , login_packet(-1)
 295 , update_status()
 296 , update_timer(16) {
 297         client.GetConnection().SetHandler(this);
 298         update_timer.Start();
 299 }
 300
 301 void MasterState::Quit() {
 302         if (!client.GetConnection().Closed()) {
 303                 client.SendPart();
 304         }
 305         env.state.PopUntil(this);
 306 }
 307
 308
 309 void MasterState::OnEnter() {
 310         login_packet = client.SendLogin(config.player.name);
 311         env.state.Push(&init_state);
 312 }
 313
 314
 315 void MasterState::Handle(const SDL_Event &event) {
 316
 317 }
 318
 319
 320 void MasterState::Update(int dt) {
 321         update_timer.Update(dt);
 322         client.Handle();
 323         client.Update(dt);
 324 }
 325
 326
 327 void MasterState::Render(Viewport &) {
 328
 329 }
 330
 331
 332 void MasterState::OnPacketLost(uint16_t id) {
 333         if (id == login_packet) {
 334                 login_packet = client.SendLogin(config.player.name);
 335         }
 336 }
 337
 338 void MasterState::OnTimeout() {
 339         if (client.GetConnection().Closed()) {
 340                 Quit();
 341                 env.ShowMessage("connection timed out");
 342         }
 343 }
 344
 345 void MasterState::On(const Packet::Join &pack) {
 346         pack.ReadWorldName(world_conf.name);
 347
 348         if (state) {
 349                 // changing worlds
 350                 cout << "server changing worlds to \"" << world_conf.name << '"' << endl;
 351         } else {
 352                 // joining game
 353                 cout << "joined game \"" << world_conf.name << '"' << endl;
 354                 // server received our login
 355                 login_packet = -1;
 356         }
 357
 358         uint32_t player_id;
 359         pack.ReadPlayerID(player_id);
 360         state.reset(new InteractiveState(*this, player_id));
 361
 362         pack.ReadPlayerState(state->GetPlayer().GetEntity().GetState());
 363
 364         env.state.PopAfter(this);
 365         env.state.Push(state.get());
 366 }
 367
 368 void MasterState::On(const Packet::Part &pack) {
 369         Quit();
 370         if (state) {
 371                 // kicked
 372                 env.ShowMessage("kicked by server");
 373         } else {
 374                 // join refused
 375                 env.ShowMessage("login refused by server");
 376         }
 377 }
 378
 379 void MasterState::On(const Packet::SpawnEntity &pack) {
 380         if (!state) {
 381                 cout << "got entity spawn before world was created" << endl;
 382                 return;
 383         }
 384         uint32_t entity_id;
 385         pack.ReadEntityID(entity_id);
 386         Entity &entity = state->GetWorld().ForceAddEntity(entity_id);
 387         UpdateEntity(entity_id, pack.Seq());
 388         pack.ReadEntity(entity);
 389         uint32_t skel_id;
 390         pack.ReadSkeletonID(skel_id);
 391         CompositeModel *skel = state->GetSkeletons().ByID(skel_id);
 392         if (skel) {
 393                 skel->Instantiate(entity.GetModel());
 394         }
 395         cout << "spawned entity #" << entity_id << "  (" << entity.Name()
 396                 << ") at " << entity.AbsolutePosition() << endl;
 397 }
 398
 399 void MasterState::On(const Packet::DespawnEntity &pack) {
 400         if (!state) {
 401                 cout << "got entity despawn before world was created" << endl;
 402                 return;
 403         }
 404         uint32_t entity_id;
 405         pack.ReadEntityID(entity_id);
 406         ClearEntity(entity_id);
 407         for (Entity &entity : state->GetWorld().Entities()) {
 408                 if (entity.ID() == entity_id) {
 409                         entity.Kill();
 410                         cout << "despawned entity #" << entity_id << " (" << entity.Name() << ") at " << entity.AbsolutePosition() << endl;
 411                         return;
 412                 }
 413         }
 414 }
 415
 416 void MasterState::On(const Packet::EntityUpdate &pack) {
 417         if (!state) {
 418                 cout << "got entity update before world was created" << endl;
 419                 return;
 420         }
 421
 422         auto world_iter = state->GetWorld().Entities().begin();
 423         auto world_end = state->GetWorld().Entities().end();
 424
 425         uint32_t count = 0;
 426         pack.ReadEntityCount(count);
 427
 428         for (uint32_t i = 0; i < count; ++i) {
 429                 uint32_t entity_id = 0;
 430                 pack.ReadEntityID(entity_id, i);
 431
 432                 while (world_iter != world_end && world_iter->ID() < entity_id) {
 433                         ++world_iter;
 434                 }
 435                 if (world_iter == world_end) {
 436                         // nothing can be done from here
 437                         return;
 438                 }
 439                 if (world_iter->ID() == entity_id) {
 440                         if (UpdateEntity(entity_id, pack.Seq())) {
 441                                 pack.ReadEntityState(world_iter->GetState(), i);
 442                         }
 443                 }
 444         }
 445 }
 446
 447 bool MasterState::UpdateEntity(uint32_t entity_id, uint16_t seq) {
 448         auto entry = update_status.find(entity_id);
 449         if (entry == update_status.end()) {
 450                 update_status.emplace(entity_id, UpdateStatus{ seq, update_timer.Elapsed() });
 451                 return true;
 452         }
 453
 454         int16_t pack_diff = int16_t(seq) - int16_t(entry->second.last_packet);
 455         int time_diff = update_timer.Elapsed() - entry->second.last_update;
 456         entry->second.last_update = update_timer.Elapsed();
 457
 458         if (pack_diff > 0 || time_diff > 1500) {
 459                 entry->second.last_packet = seq;
 460                 return true;
 461         } else {
 462                 return false;
 463         }
 464 }
 465
 466 void MasterState::ClearEntity(uint32_t entity_id) {
 467         update_status.erase(entity_id);
 468 }
 469
 470 void MasterState::On(const Packet::PlayerCorrection &pack) {
 471         if (!state) {
 472                 cout << "got player correction without a player :S" << endl;
 473                 return;
 474         }
 475         uint16_t pack_seq;
 476         EntityState corrected_state;
 477         pack.ReadPacketSeq(pack_seq);
 478         pack.ReadPlayerState(corrected_state);
 479         state->MergePlayerCorrection(pack_seq, corrected_state);
 480 }
 481
 482 void MasterState::On(const Packet::ChunkBegin &pack) {
 483         if (!state) {
 484                 cout << "got chunk data, but the world has not been created yet" << endl;
 485                 cout << "great, this will totally screw up everything :(" << endl;
 486                 return;
 487         }
 488         state->GetChunkReceiver().Handle(pack);
 489 }
 490
 491 void MasterState::On(const Packet::ChunkData &pack) {
 492         if (!state) {
 493                 cout << "got chunk data, but the world has not been created yet" << endl;
 494                 cout << "great, this will totally screw up everything :(" << endl;
 495                 return;
 496         }
 497         state->GetChunkReceiver().Handle(pack);
 498 }
 499
 500 void MasterState::On(const Packet::BlockUpdate &pack) {
 501         if (!state) {
 502                 cout << "received block update, but the world has not been created yet" << endl;
 503                 return;
 504         }
 505         state->Handle(pack);
 506 }
 507
 508 }
 509 }