src/app/runtime.cpp

   1 #include "Application.hpp"
   2 #include "Environment.hpp"
   3 #include "Runtime.hpp"
   4
   5 #include "init.hpp"
   6 #include "../client/MasterState.hpp"
   7 #include "../io/filesystem.hpp"
   8 #include "../io/TokenStreamReader.hpp"
   9 #include "../io/WorldSave.hpp"
  10 #include "../server/ServerState.hpp"
  11 #include "../standalone/MasterState.hpp"
  12
  13 #include <cctype>
  14 #include <cstdlib>
  15 #include <ctime>
  16 #include <fstream>
  17 #include <iostream>
  18 #include <SDL.h>
  19
  20 using namespace std;
  21
  22
  23 namespace {
  24
  25 string default_asset_path() {
  26         char *base = SDL_GetBasePath();
  27         string assets(base);
  28         assets += "assets/";
  29         SDL_free(base);
  30         return assets;
  31 }
  32
  33 string default_save_path() {
  34 #ifndef NDEBUG
  35         char *base = SDL_GetBasePath();
  36         string save(base);
  37         save += "saves/";
  38         SDL_free(base);
  39         return save;
  40 #else
  41         char *pref = SDL_GetPrefPath("localhorst", "blank");
  42         string save(pref);
  43         SDL_free(pref);
  44         return save;
  45 #endif
  46 }
  47
  48 }
  49
  50 namespace blank {
  51
  52 void Config::Load(std::istream &is) {
  53         TokenStreamReader in(is);
  54         std::string name;
  55         while (in.HasMore()) {
  56                 if (in.Peek().type == Token::STRING) {
  57                         in.ReadString(name);
  58                 } else {
  59                         in.ReadIdentifier(name);
  60                 }
  61                 in.Skip(Token::EQUALS);
  62                 if (name == "audio.enabled") {
  63                         in.ReadBoolean(audio.enabled);
  64                 } else if (name == "input.keyboard") {
  65                         in.ReadBoolean(input.keyboard);
  66                 } else if (name == "input.mouse") {
  67                         in.ReadBoolean(input.mouse);
  68                 } else if (name == "input.pitch_sensitivity") {
  69                         in.ReadNumber(input.pitch_sensitivity);
  70                 } else if (name == "input.yaw_sensitivity") {
  71                         in.ReadNumber(input.yaw_sensitivity);
  72                 } else if (name == "net.host") {
  73                         in.ReadString(net.host);
  74                 } else if (name == "net.port") {
  75                         int port;
  76                         in.ReadNumber(port);
  77                         net.port = port;
  78                 } else if (name == "player.name") {
  79                         in.ReadString(player.name);
  80                 } else if (name == "video.dblbuf") {
  81                         in.ReadBoolean(video.dblbuf);
  82                 } else if (name == "video.vsync") {
  83                         in.ReadBoolean(video.vsync);
  84                 } else if (name == "video.msaa") {
  85                         in.ReadNumber(video.msaa);
  86                 } else if (name == "video.hud") {
  87                         in.ReadBoolean(video.hud);
  88                 } else if (name == "video.world") {
  89                         in.ReadBoolean(video.world);
  90                 } else if (name == "video.debug") {
  91                         in.ReadBoolean(video.debug);
  92                 }
  93                 if (in.HasMore() && in.Peek().type == Token::SEMICOLON) {
  94                         in.Skip(Token::SEMICOLON);
  95                 }
  96         }
  97 }
  98
  99 void Config::Save(std::ostream &out) {
 100         out << "audio.enabled = " << (audio.enabled ? "yes" : "no") << ';' << std::endl;
 101         out << "input.keyboard = " << (input.keyboard ? "on" : "off") << ';' << std::endl;
 102         out << "input.mouse = " << (input.keyboard ? "on" : "off") << ';' << std::endl;
 103         out << "input.pitch_sensitivity = " << input.pitch_sensitivity << ';' << std::endl;
 104         out << "input.yaw_sensitivity = " << input.yaw_sensitivity << ';' << std::endl;
 105         out << "net.host = \"" << net.host << "\";" << std::endl;
 106         out << "net.port = " << net.port << ';' << std::endl;
 107         out << "player.name = \"" << player.name << "\";" << std::endl;
 108         out << "video.dblbuf = " << (video.dblbuf ? "on" : "off") << ';' << std::endl;
 109         out << "video.vsync = " << (video.vsync ? "on" : "off") << ';' << std::endl;
 110         out << "video.msaa = " << video.msaa << ';' << std::endl;
 111         out << "video.hud = " << (video.hud ? "on" : "off") << ';' << std::endl;
 112         out << "video.world = " << (video.world ? "on" : "off") << ';' << std::endl;
 113         out << "video.debug = " << (video.debug ? "on" : "off") << ';' << std::endl;
 114 }
 115
 116
 117 HeadlessEnvironment::HeadlessEnvironment(const Config &config)
 118 : config(config)
 119 , loader(config.asset_path)
 120 , counter()
 121 , state()
 122 , rng(
 123 #ifdef BLANK_PROFILING
 124 0
 125 #else
 126 std::time(nullptr)
 127 #endif
 128 ){
 129         for (int i = 0; i < 4; ++i) {
 130                 rng.Next<int>();
 131         }
 132 }
 133
 134 string HeadlessEnvironment::Config::GetWorldPath(const string &world_name) const {
 135         return save_path + "worlds/" + world_name + '/';
 136 }
 137
 138 string HeadlessEnvironment::Config::GetWorldPath(const string &world_name, const string &host_name) const {
 139         return save_path + "cache/" + host_name + '/' + world_name + '/';
 140 }
 141
 142 Environment::Environment(Window &win, const Config &config)
 143 : HeadlessEnvironment(config)
 144 , assets(loader)
 145 , audio()
 146 , viewport()
 147 , window(win)
 148 , keymap()
 149 , msg_state(*this) {
 150         viewport.Clear();
 151         window.Flip();
 152         keymap.LoadDefault();
 153
 154         string keys_path = config.save_path + "keys.conf";
 155         if (!is_file(keys_path)) {
 156                 std::ofstream file(keys_path);
 157                 keymap.Save(file);
 158         } else {
 159                 std::ifstream file(keys_path);
 160                 keymap.Load(file);
 161         }
 162 }
 163
 164 void Environment::ShowMessage(const char *msg) {
 165         cout << msg << endl;
 166         msg_state.SetMessage(msg);
 167         state.Push(&msg_state);
 168 }
 169
 170
 171 Runtime::Runtime() noexcept
 172 : name("blank")
 173 , mode(NORMAL)
 174 , target(STANDALONE)
 175 , n(0)
 176 , t(0)
 177 , config() {
 178
 179 }
 180
 181
 182 void Runtime::Initialize(int argc, const char *const *argv) {
 183         ReadArgs(argc, argv);
 184         if (mode == ERROR) return;
 185         ReadPreferences();
 186         ReadArgs(argc, argv);
 187 }
 188
 189 void Runtime::ReadArgs(int argc, const char *const *argv) {
 190         if (argc <= 0) return;
 191         name = argv[0];
 192
 193         bool options = true;
 194         bool error = false;
 195
 196         for (int i = 1; i < argc; ++i) {
 197                 const char *arg = argv[i];
 198                 if (!arg || arg[0] == '\0') {
 199                         cerr << "warning: found empty argument at position " << i << endl;
 200                         continue;
 201                 }
 202                 if (options && arg[0] == '-') {
 203                         if (arg[1] == '\0') {
 204                                 cerr << "warning: incomplete option list at position " << i << endl;
 205                         } else if (arg[1] == '-') {
 206                                 if (arg[2] == '\0') {
 207                                         // stopper
 208                                         options = false;
 209                                 } else {
 210                                         const char *param = arg + 2;
 211                                         // long option
 212                                         if (strcmp(param, "no-vsync") == 0) {
 213                                                 config.game.video.vsync = false;
 214                                         } else if (strcmp(param, "no-keyboard") == 0) {
 215                                                 config.game.input.keyboard = false;
 216                                         } else if (strcmp(param, "no-mouse") == 0) {
 217                                                 config.game.input.mouse = false;
 218                                         } else if (strcmp(param, "no-hud") == 0) {
 219                                                 config.game.video.hud = false;
 220                                         } else if (strcmp(param, "no-audio") == 0) {
 221                                                 config.game.audio.enabled = false;
 222                                         } else if (strcmp(param, "standalone") == 0) {
 223                                                 target = STANDALONE;
 224                                         } else if (strcmp(param, "server") == 0) {
 225                                                 target = SERVER;
 226                                         } else if (strcmp(param, "client") == 0) {
 227                                                 target = CLIENT;
 228                                         } else if (strcmp(param, "asset-path") == 0) {
 229                                                 ++i;
 230                                                 if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 231                                                         cerr << "missing argument to --asset-path" << endl;
 232                                                         error = true;
 233                                                 } else {
 234                                                         config.env.asset_path = argv[i];
 235                                                 }
 236                                         } else if (strcmp(param, "host") == 0) {
 237                                                 ++i;
 238                                                 if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 239                                                         cerr << "missing argument to --host" << endl;
 240                                                         error = true;
 241                                                 } else {
 242                                                         config.game.net.host = argv[i];
 243                                                 }
 244                                         } else if (strcmp(param, "port") == 0) {
 245                                                 ++i;
 246                                                 if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 247                                                         cerr << "missing argument to --port" << endl;
 248                                                         error = true;
 249                                                 } else {
 250                                                         config.game.net.port = strtoul(argv[i], nullptr, 10);
 251                                                 }
 252                                         } else if (strcmp(param, "player-name") == 0) {
 253                                                 ++i;
 254                                                 if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 255                                                         cerr << "missing argument to --player-name" << endl;
 256                                                         error = true;
 257                                                 } else {
 258                                                         config.game.player.name = argv[i];
 259                                                 }
 260                                         } else if (strcmp(param, "save-path") == 0) {
 261                                                 ++i;
 262                                                 if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 263                                                         cerr << "missing argument to --save-path" << endl;
 264                                                         error = true;
 265                                                 } else {
 266                                                         config.env.save_path = argv[i];
 267                                                 }
 268                                         } else if (strcmp(param, "world-name") == 0) {
 269                                                 ++i;
 270                                                 if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 271                                                         cerr << "missing argument to --world-name" << endl;
 272                                                         error = true;
 273                                                 } else {
 274                                                         config.world.name = argv[i];
 275                                                 }
 276                                         } else {
 277                                                 cerr << "unknown option " << arg << endl;
 278                                                 error = true;
 279                                         }
 280                                 }
 281                         } else {
 282                                 // short options
 283                                 for (int j = 1; arg[j] != '\0'; ++j) {
 284                                         switch (arg[j]) {
 285                                                 case 'd':
 286                                                         config.game.video.dblbuf = false;
 287                                                         break;
 288                                                 case 'm':
 289                                                         ++i;
 290                                                         if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 291                                                                 cerr << "missing argument to -m" << endl;
 292                                                                 error = true;
 293                                                         } else {
 294                                                                 config.game.video.msaa = strtoul(argv[i], nullptr, 10);
 295                                                         }
 296                                                         break;
 297                                                 case 'n':
 298                                                         ++i;
 299                                                         if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 300                                                                 cerr << "missing argument to -n" << endl;
 301                                                                 error = true;
 302                                                         } else {
 303                                                                 n = strtoul(argv[i], nullptr, 10);
 304                                                         }
 305                                                         break;
 306                                                 case 's':
 307                                                         ++i;
 308                                                         if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 309                                                                 cerr << "missing argument to -s" << endl;
 310                                                                 error = true;
 311                                                         } else {
 312                                                                 config.gen.seed = strtoul(argv[i], nullptr, 10);
 313                                                         }
 314                                                         break;
 315                                                 case 't':
 316                                                         ++i;
 317                                                         if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 318                                                                 cerr << "missing argument to -t" << endl;
 319                                                                 error = true;
 320                                                         } else {
 321                                                                 t = strtoul(argv[i], nullptr, 10);
 322                                                         }
 323                                                         break;
 324                                                 case '-':
 325                                                         // stopper
 326                                                         options = false;
 327                                                         break;
 328                                                 default:
 329                                                         cerr << "unknown option " << arg[j] << endl;
 330                                                         error = true;
 331                                                         break;
 332                                         }
 333                                 }
 334                         }
 335                 } else {
 336                         cerr << "unable to interpret argument "
 337                                 << i << " (" << arg << ")" << endl;
 338                         error = true;
 339                 }
 340         }
 341
 342         if (error) {
 343                 mode = ERROR;
 344         } else if (n > 0) {
 345                 if (t > 0) {
 346                         mode = FIXED_FRAME_LIMIT;
 347                 } else {
 348                         mode = FRAME_LIMIT;
 349                 }
 350         } else if (t > 0) {
 351                 mode = TIME_LIMIT;
 352         } else {
 353                 mode = NORMAL;
 354         }
 355 }
 356
 357 void Runtime::ReadPreferences() {
 358         if (config.env.asset_path.empty()) {
 359                 config.env.asset_path = default_asset_path();
 360         } else if (
 361                 config.env.asset_path[config.env.asset_path.size() - 1] != '/' &&
 362                 config.env.asset_path[config.env.asset_path.size() - 1] != '\\'
 363         ) {
 364                 config.env.asset_path += '/';
 365         }
 366         if (config.env.save_path.empty()) {
 367                 config.env.save_path = default_save_path();
 368         } else if (
 369                 config.env.save_path[config.env.save_path.size() - 1] != '/' &&
 370                 config.env.save_path[config.env.save_path.size() - 1] != '\\'
 371         ) {
 372                 config.env.save_path += '/';
 373         }
 374
 375         string prefs_path = config.env.save_path + "prefs.conf";
 376         if (is_file(prefs_path)) {
 377                 ifstream file(prefs_path);
 378                 config.game.Load(file);
 379         } else {
 380                 make_dirs(config.env.save_path);
 381                 ofstream file(prefs_path);
 382                 config.game.Save(file);
 383         }
 384 }
 385
 386 int Runtime::Execute() {
 387         if (mode == ERROR) {
 388                 return 1;
 389         }
 390
 391         InitHeadless init_headless;
 392
 393         switch (target) {
 394                 default:
 395                 case STANDALONE:
 396                         RunStandalone();
 397                         break;
 398                 case SERVER:
 399                         RunServer();
 400                         break;
 401                 case CLIENT:
 402                         RunClient();
 403                         break;
 404         }
 405
 406         return 0;
 407 }
 408
 409 void Runtime::RunStandalone() {
 410         Init init(config.game.video.dblbuf, config.game.video.msaa);
 411
 412         Environment env(init.window, config.env);
 413         env.viewport.VSync(config.game.video.vsync);
 414
 415         WorldSave save(config.env.GetWorldPath(config.world.name));
 416         if (save.Exists()) {
 417                 save.Read(config.world);
 418                 save.Read(config.gen);
 419         } else {
 420                 save.Write(config.world);
 421                 save.Write(config.gen);
 422         }
 423
 424         Application app(env);
 425         standalone::MasterState world_state(env, config.game, config.gen, config.world, save);
 426         app.PushState(&world_state);
 427         Run(app);
 428 }
 429
 430 void Runtime::RunServer() {
 431         HeadlessEnvironment env(config.env);
 432
 433         WorldSave save(config.env.GetWorldPath(config.world.name));
 434         if (save.Exists()) {
 435                 save.Read(config.world);
 436                 save.Read(config.gen);
 437         } else {
 438                 save.Write(config.world);
 439                 save.Write(config.gen);
 440         }
 441
 442         HeadlessApplication app(env);
 443         server::ServerState server_state(env, config.gen, config.world, save, config.game);
 444         app.PushState(&server_state);
 445         Run(app);
 446 }
 447
 448 void Runtime::RunClient() {
 449         Init init(config.game.video.dblbuf, config.game.video.msaa);
 450
 451         Environment env(init.window, config.env);
 452         env.viewport.VSync(config.game.video.vsync);
 453
 454         Application app(env);
 455         client::MasterState client_state(env, config.game, config.world);
 456         app.PushState(&client_state);
 457         Run(app);
 458 }
 459
 460 void Runtime::Run(HeadlessApplication &app) {
 461         switch (mode) {
 462                 default:
 463                 case NORMAL:
 464                         app.Run();
 465                         break;
 466                 case FRAME_LIMIT:
 467                         app.RunN(n);
 468                         break;
 469                 case TIME_LIMIT:
 470                         app.RunT(t);
 471                         break;
 472                 case FIXED_FRAME_LIMIT:
 473                         app.RunS(n, t);
 474                         break;
 475         }
 476 }
 477
 478 }