src/app/runtime.cpp

   1 #include "Application.hpp"
   2 #include "Environment.hpp"
   3 #include "Runtime.hpp"
   4 #include "WorldState.hpp"
   5
   6 #include "init.hpp"
   7 #include "../client/MasterState.hpp"
   8 #include "../io/filesystem.hpp"
   9 #include "../io/WorldSave.hpp"
  10 #include "../server/ServerState.hpp"
  11
  12 #include <cctype>
  13 #include <cstdlib>
  14 #include <fstream>
  15 #include <iostream>
  16 #include <SDL.h>
  17
  18 using namespace std;
  19
  20
  21 namespace {
  22
  23 string default_asset_path() {
  24         char *base = SDL_GetBasePath();
  25         string assets(base);
  26         assets += "assets/";
  27         SDL_free(base);
  28         return assets;
  29 }
  30
  31 string default_save_path() {
  32 #ifndef NDEBUG
  33         char *base = SDL_GetBasePath();
  34         string save(base);
  35         save += "saves/";
  36         SDL_free(base);
  37         return save;
  38 #else
  39         char *pref = SDL_GetPrefPath("localhorst", "blank");
  40         string save(pref);
  41         SDL_free(pref);
  42         return save;
  43 #endif
  44 }
  45
  46 }
  47
  48 namespace blank {
  49
  50 HeadlessEnvironment::HeadlessEnvironment(const Config &config)
  51 : config(config)
  52 , loader(config.asset_path)
  53 , counter()
  54 , state() {
  55
  56 }
  57
  58 string HeadlessEnvironment::Config::GetWorldPath(const string &world_name) const {
  59         return save_path + "worlds/" + world_name + '/';
  60 }
  61
  62 string HeadlessEnvironment::Config::GetWorldPath(const string &world_name, const string &host_name) const {
  63         return save_path + "cache/" + host_name + '/' + world_name + '/';
  64 }
  65
  66 Environment::Environment(Window &win, const Config &config)
  67 : HeadlessEnvironment(config)
  68 , assets(loader)
  69 , audio()
  70 , viewport()
  71 , window(win)
  72 , keymap() {
  73         viewport.Clear();
  74         window.Flip();
  75         keymap.LoadDefault();
  76
  77         string keys_path = config.save_path + "keys.conf";
  78         if (!is_file(keys_path)) {
  79                 std::ofstream file(keys_path);
  80                 keymap.Save(file);
  81         } else {
  82                 std::ifstream file(keys_path);
  83                 keymap.Load(file);
  84         }
  85 }
  86
  87
  88 Runtime::Runtime() noexcept
  89 : name("blank")
  90 , mode(NORMAL)
  91 , target(STANDALONE)
  92 , n(0)
  93 , t(0)
  94 , config() {
  95
  96 }
  97
  98
  99 void Runtime::ReadArgs(int argc, const char *const *argv) {
 100         if (argc <= 0) return;
 101         name = argv[0];
 102
 103         bool options = true;
 104         bool error = false;
 105
 106         for (int i = 1; i < argc; ++i) {
 107                 const char *arg = argv[i];
 108                 if (!arg || arg[0] == '\0') {
 109                         cerr << "warning: found empty argument at position " << i << endl;
 110                         continue;
 111                 }
 112                 if (options && arg[0] == '-') {
 113                         if (arg[1] == '\0') {
 114                                 cerr << "warning: incomplete option list at position " << i << endl;
 115                         } else if (arg[1] == '-') {
 116                                 if (arg[2] == '\0') {
 117                                         // stopper
 118                                         options = false;
 119                                 } else {
 120                                         const char *param = arg + 2;
 121                                         // long option
 122                                         if (strcmp(param, "no-vsync") == 0) {
 123                                                 config.vsync = false;
 124                                         } else if (strcmp(param, "no-keyboard") == 0) {
 125                                                 config.interface.keyboard_disabled = true;
 126                                         } else if (strcmp(param, "no-mouse") == 0) {
 127                                                 config.interface.mouse_disabled = true;
 128                                         } else if (strcmp(param, "no-hud") == 0) {
 129                                                 config.interface.visual_disabled = true;
 130                                         } else if (strcmp(param, "no-audio") == 0) {
 131                                                 config.interface.audio_disabled = true;
 132                                         } else if (strcmp(param, "standalone") == 0) {
 133                                                 target = STANDALONE;
 134                                         } else if (strcmp(param, "server") == 0) {
 135                                                 target = SERVER;
 136                                         } else if (strcmp(param, "client") == 0) {
 137                                                 target = CLIENT;
 138                                         } else if (strcmp(param, "asset-path") == 0) {
 139                                                 ++i;
 140                                                 if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 141                                                         cerr << "missing argument to --asset-path" << endl;
 142                                                         error = true;
 143                                                 } else {
 144                                                         config.env.asset_path = argv[i];
 145                                                 }
 146                                         } else if (strcmp(param, "host") == 0) {
 147                                                 ++i;
 148                                                 if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 149                                                         cerr << "missing argument to --host" << endl;
 150                                                         error = true;
 151                                                 } else {
 152                                                         config.client.host = argv[i];
 153                                                 }
 154                                         } else if (strcmp(param, "port") == 0) {
 155                                                 ++i;
 156                                                 if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 157                                                         cerr << "missing argument to --port" << endl;
 158                                                         error = true;
 159                                                 } else {
 160                                                         config.server.port = strtoul(argv[i], nullptr, 10);
 161                                                         config.client.port = config.server.port;
 162                                                 }
 163                                         } else if (strcmp(param, "player-name") == 0) {
 164                                                 ++i;
 165                                                 if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 166                                                         cerr << "missing argument to --player-name" << endl;
 167                                                         error = true;
 168                                                 } else {
 169                                                         config.interface.player_name = argv[i];
 170                                                 }
 171                                         } else if (strcmp(param, "save-path") == 0) {
 172                                                 ++i;
 173                                                 if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 174                                                         cerr << "missing argument to --save-path" << endl;
 175                                                         error = true;
 176                                                 } else {
 177                                                         config.env.save_path = argv[i];
 178                                                 }
 179                                         } else if (strcmp(param, "world-name") == 0) {
 180                                                 ++i;
 181                                                 if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 182                                                         cerr << "missing argument to --world-name" << endl;
 183                                                         error = true;
 184                                                 } else {
 185                                                         config.world.name = argv[i];
 186                                                 }
 187                                         } else {
 188                                                 cerr << "unknown option " << arg << endl;
 189                                                 error = true;
 190                                         }
 191                                 }
 192                         } else {
 193                                 // short options
 194                                 for (int j = 1; arg[j] != '\0'; ++j) {
 195                                         switch (arg[j]) {
 196                                                 case 'd':
 197                                                         config.doublebuf = false;
 198                                                         break;
 199                                                 case 'm':
 200                                                         ++i;
 201                                                         if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 202                                                                 cerr << "missing argument to -m" << endl;
 203                                                                 error = true;
 204                                                         } else {
 205                                                                 config.multisampling = strtoul(argv[i], nullptr, 10);
 206                                                         }
 207                                                         break;
 208                                                 case 'n':
 209                                                         ++i;
 210                                                         if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 211                                                                 cerr << "missing argument to -n" << endl;
 212                                                                 error = true;
 213                                                         } else {
 214                                                                 n = strtoul(argv[i], nullptr, 10);
 215                                                         }
 216                                                         break;
 217                                                 case 's':
 218                                                         ++i;
 219                                                         if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 220                                                                 cerr << "missing argument to -s" << endl;
 221                                                                 error = true;
 222                                                         } else {
 223                                                                 config.gen.seed = strtoul(argv[i], nullptr, 10);
 224                                                         }
 225                                                         break;
 226                                                 case 't':
 227                                                         ++i;
 228                                                         if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 229                                                                 cerr << "missing argument to -t" << endl;
 230                                                                 error = true;
 231                                                         } else {
 232                                                                 t = strtoul(argv[i], nullptr, 10);
 233                                                         }
 234                                                         break;
 235                                                 case '-':
 236                                                         // stopper
 237                                                         options = false;
 238                                                         break;
 239                                                 default:
 240                                                         cerr << "unknown option " << arg[j] << endl;
 241                                                         error = true;
 242                                                         break;
 243                                         }
 244                                 }
 245                         }
 246                 } else {
 247                         cerr << "unable to interpret argument "
 248                                 << i << " (" << arg << ")" << endl;
 249                         error = true;
 250                 }
 251         }
 252
 253         if (error) {
 254                 mode = ERROR;
 255                 return;
 256         }
 257
 258         if (config.env.asset_path.empty()) {
 259                 config.env.asset_path = default_asset_path();
 260         } else if (
 261                 config.env.asset_path[config.env.asset_path.size() - 1] != '/' &&
 262                 config.env.asset_path[config.env.asset_path.size() - 1] != '\\'
 263         ) {
 264                 config.env.asset_path += '/';
 265         }
 266         if (config.env.save_path.empty()) {
 267                 config.env.save_path = default_save_path();
 268         } else if (
 269                 config.env.save_path[config.env.save_path.size() - 1] != '/' &&
 270                 config.env.save_path[config.env.save_path.size() - 1] != '\\'
 271         ) {
 272                 config.env.save_path += '/';
 273         }
 274
 275         if (n > 0) {
 276                 if (t > 0) {
 277                         mode = FIXED_FRAME_LIMIT;
 278                 } else {
 279                         mode = FRAME_LIMIT;
 280                 }
 281         } else if (t > 0) {
 282                 mode = TIME_LIMIT;
 283         } else {
 284                 mode = NORMAL;
 285         }
 286 }
 287
 288 int Runtime::Execute() {
 289         if (mode == ERROR) {
 290                 return 1;
 291         }
 292
 293         InitHeadless init_headless;
 294
 295         switch (target) {
 296                 default:
 297                 case STANDALONE:
 298                         RunStandalone();
 299                         break;
 300                 case SERVER:
 301                         RunServer();
 302                         break;
 303                 case CLIENT:
 304                         RunClient();
 305                         break;
 306         }
 307
 308         return 0;
 309 }
 310
 311 void Runtime::RunStandalone() {
 312         Init init(config.doublebuf, config.multisampling);
 313
 314         Environment env(init.window, config.env);
 315         env.viewport.VSync(config.vsync);
 316
 317         WorldSave save(config.env.GetWorldPath(config.world.name));
 318         if (save.Exists()) {
 319                 save.Read(config.world);
 320                 save.Read(config.gen);
 321         } else {
 322                 save.Write(config.world);
 323                 save.Write(config.gen);
 324         }
 325
 326         Application app(env);
 327         WorldState world_state(env, config.gen, config.interface, config.world, save);
 328         app.PushState(&world_state);
 329         Run(app);
 330 }
 331
 332 void Runtime::RunServer() {
 333         HeadlessEnvironment env(config.env);
 334
 335         WorldSave save(config.env.GetWorldPath(config.world.name));
 336         if (save.Exists()) {
 337                 save.Read(config.world);
 338                 save.Read(config.gen);
 339         } else {
 340                 save.Write(config.world);
 341                 save.Write(config.gen);
 342         }
 343
 344         HeadlessApplication app(env);
 345         server::ServerState server_state(env, config.gen, config.world, save, config.server);
 346         app.PushState(&server_state);
 347         Run(app);
 348 }
 349
 350 void Runtime::RunClient() {
 351         Init init(config.doublebuf, config.multisampling);
 352
 353         Environment env(init.window, config.env);
 354         env.viewport.VSync(config.vsync);
 355
 356         Application app(env);
 357         client::MasterState client_state(env, config.world, config.interface, config.client);
 358         app.PushState(&client_state);
 359         Run(app);
 360 }
 361
 362 void Runtime::Run(HeadlessApplication &app) {
 363         switch (mode) {
 364                 default:
 365                 case NORMAL:
 366                         app.Run();
 367                         break;
 368                 case FRAME_LIMIT:
 369                         app.RunN(n);
 370                         break;
 371                 case TIME_LIMIT:
 372                         app.RunT(t);
 373                         break;
 374                 case FIXED_FRAME_LIMIT:
 375                         app.RunS(n, t);
 376                         break;
 377         }
 378 }
 379
 380 }