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 == "net.cmd_port") {
  79                         int port;
  80                         in.ReadNumber(port);
  81                         net.cmd_port = port;
  82                 } else if (name == "player.name") {
  83                         in.ReadString(player.name);
  84                 } else if (name == "video.dblbuf") {
  85                         in.ReadBoolean(video.dblbuf);
  86                 } else if (name == "video.vsync") {
  87                         in.ReadBoolean(video.vsync);
  88                 } else if (name == "video.msaa") {
  89                         in.ReadNumber(video.msaa);
  90                 } else if (name == "video.hud") {
  91                         in.ReadBoolean(video.hud);
  92                 } else if (name == "video.world") {
  93                         in.ReadBoolean(video.world);
  94                 } else if (name == "video.debug") {
  95                         in.ReadBoolean(video.debug);
  96                 }
  97                 if (in.HasMore() && in.Peek().type == Token::SEMICOLON) {
  98                         in.Skip(Token::SEMICOLON);
  99                 }
 100         }
 101 }
 102
 103 void Config::Save(std::ostream &out) {
 104         out << "audio.enabled = " << (audio.enabled ? "yes" : "no") << ';' << std::endl;
 105         out << "input.keyboard = " << (input.keyboard ? "on" : "off") << ';' << std::endl;
 106         out << "input.mouse = " << (input.keyboard ? "on" : "off") << ';' << std::endl;
 107         out << "input.pitch_sensitivity = " << input.pitch_sensitivity << ';' << std::endl;
 108         out << "input.yaw_sensitivity = " << input.yaw_sensitivity << ';' << std::endl;
 109         out << "net.host = \"" << net.host << "\";" << std::endl;
 110         out << "net.port = " << net.port << ';' << std::endl;
 111         out << "net.cmd_port = " << net.cmd_port << ';' << std::endl;
 112         out << "player.name = \"" << player.name << "\";" << std::endl;
 113         out << "video.dblbuf = " << (video.dblbuf ? "on" : "off") << ';' << std::endl;
 114         out << "video.vsync = " << (video.vsync ? "on" : "off") << ';' << std::endl;
 115         out << "video.msaa = " << video.msaa << ';' << std::endl;
 116         out << "video.hud = " << (video.hud ? "on" : "off") << ';' << std::endl;
 117         out << "video.world = " << (video.world ? "on" : "off") << ';' << std::endl;
 118         out << "video.debug = " << (video.debug ? "on" : "off") << ';' << std::endl;
 119 }
 120
 121
 122 HeadlessEnvironment::HeadlessEnvironment(const Config &config)
 123 : config(config)
 124 , loader(config.asset_path)
 125 , counter()
 126 , state() {
 127
 128 }
 129
 130 string HeadlessEnvironment::Config::GetWorldPath(const string &world_name) const {
 131         return save_path + "worlds/" + world_name + '/';
 132 }
 133
 134 string HeadlessEnvironment::Config::GetWorldPath(const string &world_name, const string &host_name) const {
 135         return save_path + "cache/" + host_name + '/' + world_name + '/';
 136 }
 137
 138 Environment::Environment(Window &win, const Config &config)
 139 : HeadlessEnvironment(config)
 140 , assets(loader)
 141 , audio()
 142 , viewport()
 143 , window(win)
 144 , keymap()
 145 , msg_state(*this) {
 146         viewport.Clear();
 147         window.Flip();
 148         keymap.LoadDefault();
 149
 150         string keys_path = config.save_path + "keys.conf";
 151         if (!is_file(keys_path)) {
 152                 std::ofstream file(keys_path);
 153                 keymap.Save(file);
 154         } else {
 155                 std::ifstream file(keys_path);
 156                 keymap.Load(file);
 157         }
 158 }
 159
 160 void Environment::ShowMessage(const char *msg) {
 161         cout << msg << endl;
 162         msg_state.SetMessage(msg);
 163         state.Push(&msg_state);
 164 }
 165
 166
 167 Runtime::Runtime() noexcept
 168 : name("blank")
 169 , mode(NORMAL)
 170 , target(STANDALONE)
 171 , n(0)
 172 , t(0)
 173 , config() {
 174
 175 }
 176
 177
 178 void Runtime::Initialize(int argc, const char *const *argv) {
 179         ReadArgs(argc, argv);
 180         if (mode == ERROR) return;
 181         ReadPreferences();
 182         ReadArgs(argc, argv);
 183 }
 184
 185 void Runtime::ReadArgs(int argc, const char *const *argv) {
 186         if (argc <= 0) return;
 187         name = argv[0];
 188
 189         bool options = true;
 190         bool error = false;
 191
 192         for (int i = 1; i < argc; ++i) {
 193                 const char *arg = argv[i];
 194                 if (!arg || arg[0] == '\0') {
 195                         cerr << "warning: found empty argument at position " << i << endl;
 196                         continue;
 197                 }
 198                 if (options && arg[0] == '-') {
 199                         if (arg[1] == '\0') {
 200                                 cerr << "warning: incomplete option list at position " << i << endl;
 201                         } else if (arg[1] == '-') {
 202                                 if (arg[2] == '\0') {
 203                                         // stopper
 204                                         options = false;
 205                                 } else {
 206                                         const char *param = arg + 2;
 207                                         // long option
 208                                         if (strcmp(param, "no-vsync") == 0) {
 209                                                 config.game.video.vsync = false;
 210                                         } else if (strcmp(param, "no-keyboard") == 0) {
 211                                                 config.game.input.keyboard = false;
 212                                         } else if (strcmp(param, "no-mouse") == 0) {
 213                                                 config.game.input.mouse = false;
 214                                         } else if (strcmp(param, "no-hud") == 0) {
 215                                                 config.game.video.hud = false;
 216                                         } else if (strcmp(param, "no-audio") == 0) {
 217                                                 config.game.audio.enabled = false;
 218                                         } else if (strcmp(param, "standalone") == 0) {
 219                                                 target = STANDALONE;
 220                                         } else if (strcmp(param, "server") == 0) {
 221                                                 target = SERVER;
 222                                         } else if (strcmp(param, "client") == 0) {
 223                                                 target = CLIENT;
 224                                         } else if (strcmp(param, "asset-path") == 0) {
 225                                                 ++i;
 226                                                 if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 227                                                         cerr << "missing argument to --asset-path" << endl;
 228                                                         error = true;
 229                                                 } else {
 230                                                         config.env.asset_path = argv[i];
 231                                                 }
 232                                         } else if (strcmp(param, "host") == 0) {
 233                                                 ++i;
 234                                                 if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 235                                                         cerr << "missing argument to --host" << endl;
 236                                                         error = true;
 237                                                 } else {
 238                                                         config.game.net.host = argv[i];
 239                                                 }
 240                                         } else if (strcmp(param, "port") == 0) {
 241                                                 ++i;
 242                                                 if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 243                                                         cerr << "missing argument to --port" << endl;
 244                                                         error = true;
 245                                                 } else {
 246                                                         config.game.net.port = strtoul(argv[i], nullptr, 10);
 247                                                 }
 248                                         } else if (strcmp(param, "cmd-port") == 0) {
 249                                                 ++i;
 250                                                 if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 251                                                         cerr << "missing argument to --cmd-port" << endl;
 252                                                         error = true;
 253                                                 } else {
 254                                                         config.game.net.cmd_port = strtoul(argv[i], nullptr, 10);
 255                                                 }
 256                                         } else if (strcmp(param, "player-name") == 0) {
 257                                                 ++i;
 258                                                 if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 259                                                         cerr << "missing argument to --player-name" << endl;
 260                                                         error = true;
 261                                                 } else {
 262                                                         config.game.player.name = argv[i];
 263                                                 }
 264                                         } else if (strcmp(param, "save-path") == 0) {
 265                                                 ++i;
 266                                                 if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 267                                                         cerr << "missing argument to --save-path" << endl;
 268                                                         error = true;
 269                                                 } else {
 270                                                         config.env.save_path = argv[i];
 271                                                 }
 272                                         } else if (strcmp(param, "world-name") == 0) {
 273                                                 ++i;
 274                                                 if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 275                                                         cerr << "missing argument to --world-name" << endl;
 276                                                         error = true;
 277                                                 } else {
 278                                                         config.world.name = argv[i];
 279                                                 }
 280                                         } else {
 281                                                 cerr << "unknown option " << arg << endl;
 282                                                 error = true;
 283                                         }
 284                                 }
 285                         } else {
 286                                 // short options
 287                                 for (int j = 1; arg[j] != '\0'; ++j) {
 288                                         switch (arg[j]) {
 289                                                 case 'd':
 290                                                         config.game.video.dblbuf = false;
 291                                                         break;
 292                                                 case 'm':
 293                                                         ++i;
 294                                                         if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 295                                                                 cerr << "missing argument to -m" << endl;
 296                                                                 error = true;
 297                                                         } else {
 298                                                                 config.game.video.msaa = strtoul(argv[i], nullptr, 10);
 299                                                         }
 300                                                         break;
 301                                                 case 'n':
 302                                                         ++i;
 303                                                         if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 304                                                                 cerr << "missing argument to -n" << endl;
 305                                                                 error = true;
 306                                                         } else {
 307                                                                 n = strtoul(argv[i], nullptr, 10);
 308                                                         }
 309                                                         break;
 310                                                 case 's':
 311                                                         ++i;
 312                                                         if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 313                                                                 cerr << "missing argument to -s" << endl;
 314                                                                 error = true;
 315                                                         } else {
 316                                                                 config.gen.seed = strtoul(argv[i], nullptr, 10);
 317                                                         }
 318                                                         break;
 319                                                 case 't':
 320                                                         ++i;
 321                                                         if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 322                                                                 cerr << "missing argument to -t" << endl;
 323                                                                 error = true;
 324                                                         } else {
 325                                                                 t = strtoul(argv[i], nullptr, 10);
 326                                                         }
 327                                                         break;
 328                                                 case '-':
 329                                                         // stopper
 330                                                         options = false;
 331                                                         break;
 332                                                 default:
 333                                                         cerr << "unknown option " << arg[j] << endl;
 334                                                         error = true;
 335                                                         break;
 336                                         }
 337                                 }
 338                         }
 339                 } else {
 340                         cerr << "unable to interpret argument "
 341                                 << i << " (" << arg << ")" << endl;
 342                         error = true;
 343                 }
 344         }
 345
 346         if (error) {
 347                 mode = ERROR;
 348         } else if (n > 0) {
 349                 if (t > 0) {
 350                         mode = FIXED_FRAME_LIMIT;
 351                 } else {
 352                         mode = FRAME_LIMIT;
 353                 }
 354         } else if (t > 0) {
 355                 mode = TIME_LIMIT;
 356         } else {
 357                 mode = NORMAL;
 358         }
 359
 360         if (config.env.asset_path.empty()) {
 361                 config.env.asset_path = default_asset_path();
 362         } else if (
 363                 config.env.asset_path.back() != '/' &&
 364                 config.env.asset_path.back() != '\\'
 365         ) {
 366                 config.env.asset_path += '/';
 367         }
 368         if (config.env.save_path.empty()) {
 369                 config.env.save_path = default_save_path();
 370         } else if (
 371                 config.env.save_path.back() != '/' &&
 372                 config.env.save_path.back() != '\\'
 373         ) {
 374                 config.env.save_path += '/';
 375         }
 376 }
 377
 378 void Runtime::ReadPreferences() {
 379         string prefs_path = config.env.save_path + "prefs.conf";
 380         if (is_file(prefs_path)) {
 381                 ifstream file(prefs_path);
 382                 config.game.Load(file);
 383         } else {
 384                 make_dirs(config.env.save_path);
 385                 ofstream file(prefs_path);
 386                 config.game.Save(file);
 387         }
 388 }
 389
 390 int Runtime::Execute() {
 391         if (mode == ERROR) {
 392                 return 1;
 393         }
 394
 395         InitHeadless init_headless;
 396
 397         switch (target) {
 398                 default:
 399                 case STANDALONE:
 400                         RunStandalone();
 401                         break;
 402                 case SERVER:
 403                         RunServer();
 404                         break;
 405                 case CLIENT:
 406                         RunClient();
 407                         break;
 408         }
 409
 410         return 0;
 411 }
 412
 413 void Runtime::RunStandalone() {
 414         Init init(config.game.video.dblbuf, config.game.video.msaa);
 415
 416         Environment env(init.window, config.env);
 417         env.viewport.VSync(config.game.video.vsync);
 418
 419         WorldSave save(config.env.GetWorldPath(config.world.name));
 420         if (save.Exists()) {
 421                 save.Read(config.world);
 422                 save.Read(config.gen);
 423         } else {
 424                 save.Write(config.world);
 425                 save.Write(config.gen);
 426         }
 427
 428         Application app(env);
 429         standalone::MasterState world_state(env, config.game, config.gen, config.world, save);
 430         app.PushState(&world_state);
 431         Run(app);
 432 }
 433
 434 void Runtime::RunServer() {
 435         HeadlessEnvironment env(config.env);
 436
 437         WorldSave save(config.env.GetWorldPath(config.world.name));
 438         if (save.Exists()) {
 439                 save.Read(config.world);
 440                 save.Read(config.gen);
 441         } else {
 442                 save.Write(config.world);
 443                 save.Write(config.gen);
 444         }
 445
 446         HeadlessApplication app(env);
 447         server::ServerState server_state(env, config.gen, config.world, save, config.game);
 448         app.PushState(&server_state);
 449         Run(app);
 450 }
 451
 452 void Runtime::RunClient() {
 453         Init init(config.game.video.dblbuf, config.game.video.msaa);
 454
 455         Environment env(init.window, config.env);
 456         env.viewport.VSync(config.game.video.vsync);
 457
 458         Application app(env);
 459         client::MasterState client_state(env, config.game, config.world);
 460         app.PushState(&client_state);
 461         Run(app);
 462 }
 463
 464 void Runtime::Run(HeadlessApplication &app) {
 465         switch (mode) {
 466                 default:
 467                 case NORMAL:
 468                         app.Run();
 469                         break;
 470                 case FRAME_LIMIT:
 471                         app.RunN(n);
 472                         break;
 473                 case TIME_LIMIT:
 474                         app.RunT(t);
 475                         break;
 476                 case FIXED_FRAME_LIMIT:
 477                         app.RunS(n, t);
 478                         break;
 479         }
 480 }
 481
 482 }