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                 // TODO: push disconnected message
 341                 cout << "connection timed out" << endl;
 342                 Quit();
 343         }
 344 }
 345
 346 void MasterState::On(const Packet::Join &pack) {
 347         pack.ReadWorldName(world_conf.name);
 348
 349         if (state) {
 350                 // changing worlds
 351                 cout << "server changing worlds to \"" << world_conf.name << '"' << endl;
 352         } else {
 353                 // joining game
 354                 cout << "joined game \"" << world_conf.name << '"' << endl;
 355                 // server received our login
 356                 login_packet = -1;
 357         }
 358
 359         uint32_t player_id;
 360         pack.ReadPlayerID(player_id);
 361         state.reset(new InteractiveState(*this, player_id));
 362
 363         pack.ReadPlayerState(state->GetPlayer().GetEntity().GetState());
 364
 365         env.state.PopAfter(this);
 366         env.state.Push(state.get());
 367 }
 368
 369 void MasterState::On(const Packet::Part &pack) {
 370         if (state) {
 371                 // kicked
 372                 cout << "kicked by server" << endl;
 373         } else {
 374                 // join refused
 375                 cout << "login refused by server" << endl;
 376         }
 377         Quit();
 378 }
 379
 380 void MasterState::On(const Packet::SpawnEntity &pack) {
 381         if (!state) {
 382                 cout << "got entity spawn before world was created" << endl;
 383                 Quit();
 384                 return;
 385         }
 386         uint32_t entity_id;
 387         pack.ReadEntityID(entity_id);
 388         Entity &entity = state->GetWorld().ForceAddEntity(entity_id);
 389         UpdateEntity(entity_id, pack.Seq());
 390         pack.ReadEntity(entity);
 391         uint32_t skel_id;
 392         pack.ReadSkeletonID(skel_id);
 393         CompositeModel *skel = state->GetSkeletons().ByID(skel_id);
 394         if (skel) {
 395                 skel->Instantiate(entity.GetModel());
 396         }
 397         cout << "spawned entity #" << entity_id << "  (" << entity.Name()
 398                 << ") at " << entity.AbsolutePosition() << endl;
 399 }
 400
 401 void MasterState::On(const Packet::DespawnEntity &pack) {
 402         if (!state) {
 403                 cout << "got entity despawn before world was created" << endl;
 404                 Quit();
 405                 return;
 406         }
 407         uint32_t entity_id;
 408         pack.ReadEntityID(entity_id);
 409         ClearEntity(entity_id);
 410         for (Entity &entity : state->GetWorld().Entities()) {
 411                 if (entity.ID() == entity_id) {
 412                         entity.Kill();
 413                         cout << "despawned entity #" << entity_id << " (" << entity.Name() << ") at " << entity.AbsolutePosition() << endl;
 414                         return;
 415                 }
 416         }
 417 }
 418
 419 void MasterState::On(const Packet::EntityUpdate &pack) {
 420         if (!state) {
 421                 cout << "got entity update before world was created" << endl;
 422                 Quit();
 423                 return;
 424         }
 425
 426         auto world_iter = state->GetWorld().Entities().begin();
 427         auto world_end = state->GetWorld().Entities().end();
 428
 429         uint32_t count = 0;
 430         pack.ReadEntityCount(count);
 431
 432         for (uint32_t i = 0; i < count; ++i) {
 433                 uint32_t entity_id = 0;
 434                 pack.ReadEntityID(entity_id, i);
 435
 436                 while (world_iter != world_end && world_iter->ID() < entity_id) {
 437                         ++world_iter;
 438                 }
 439                 if (world_iter == world_end) {
 440                         // nothing can be done from here
 441                         return;
 442                 }
 443                 if (world_iter->ID() == entity_id) {
 444                         if (UpdateEntity(entity_id, pack.Seq())) {
 445                                 pack.ReadEntityState(world_iter->GetState(), i);
 446                         }
 447                 }
 448         }
 449 }
 450
 451 bool MasterState::UpdateEntity(uint32_t entity_id, uint16_t seq) {
 452         auto entry = update_status.find(entity_id);
 453         if (entry == update_status.end()) {
 454                 update_status.emplace(entity_id, UpdateStatus{ seq, update_timer.Elapsed() });
 455                 return true;
 456         }
 457
 458         int16_t pack_diff = int16_t(seq) - int16_t(entry->second.last_packet);
 459         int time_diff = update_timer.Elapsed() - entry->second.last_update;
 460         entry->second.last_update = update_timer.Elapsed();
 461
 462         if (pack_diff > 0 || time_diff > 1500) {
 463                 entry->second.last_packet = seq;
 464                 return true;
 465         } else {
 466                 return false;
 467         }
 468 }
 469
 470 void MasterState::ClearEntity(uint32_t entity_id) {
 471         update_status.erase(entity_id);
 472 }
 473
 474 void MasterState::On(const Packet::PlayerCorrection &pack) {
 475         if (!state) {
 476                 cout << "got player correction without a player :S" << endl;
 477                 Quit();
 478                 return;
 479         }
 480         uint16_t pack_seq;
 481         EntityState corrected_state;
 482         pack.ReadPacketSeq(pack_seq);
 483         pack.ReadPlayerState(corrected_state);
 484         state->MergePlayerCorrection(pack_seq, corrected_state);
 485 }
 486
 487 void MasterState::On(const Packet::ChunkBegin &pack) {
 488         if (!state) {
 489                 cout << "got chunk data, but the world has not been created yet" << endl;
 490                 cout << "great, this will totally screw up everything :(" << endl;
 491                 return;
 492         }
 493         state->GetChunkReceiver().Handle(pack);
 494 }
 495
 496 void MasterState::On(const Packet::ChunkData &pack) {
 497         if (!state) {
 498                 cout << "got chunk data, but the world has not been created yet" << endl;
 499                 cout << "great, this will totally screw up everything :(" << endl;
 500                 return;
 501         }
 502         state->GetChunkReceiver().Handle(pack);
 503 }
 504
 505 void MasterState::On(const Packet::BlockUpdate &pack) {
 506         if (!state) {
 507                 cout << "received block update, but the world has not been created yet" << endl;
 508                 return;
 509         }
 510         state->Handle(pack);
 511 }
 512
 513 }
 514 }