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