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/WorldSave.hpp"
   9 #include "../server/ServerState.hpp"
  10 #include "../standalone/MasterState.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.game.video.vsync = false;
 124                                         } else if (strcmp(param, "no-keyboard") == 0) {
 125                                                 config.game.input.keyboard = false;
 126                                         } else if (strcmp(param, "no-mouse") == 0) {
 127                                                 config.game.input.mouse = false;
 128                                         } else if (strcmp(param, "no-hud") == 0) {
 129                                                 config.game.video.hud = false;
 130                                         } else if (strcmp(param, "no-audio") == 0) {
 131                                                 config.game.audio.enabled = false;
 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.game.net.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.game.net.port = strtoul(argv[i], nullptr, 10);
 161                                                 }
 162                                         } else if (strcmp(param, "player-name") == 0) {
 163                                                 ++i;
 164                                                 if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 165                                                         cerr << "missing argument to --player-name" << endl;
 166                                                         error = true;
 167                                                 } else {
 168                                                         config.game.player.name = argv[i];
 169                                                 }
 170                                         } else if (strcmp(param, "save-path") == 0) {
 171                                                 ++i;
 172                                                 if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 173                                                         cerr << "missing argument to --save-path" << endl;
 174                                                         error = true;
 175                                                 } else {
 176                                                         config.env.save_path = argv[i];
 177                                                 }
 178                                         } else if (strcmp(param, "world-name") == 0) {
 179                                                 ++i;
 180                                                 if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 181                                                         cerr << "missing argument to --world-name" << endl;
 182                                                         error = true;
 183                                                 } else {
 184                                                         config.world.name = argv[i];
 185                                                 }
 186                                         } else {
 187                                                 cerr << "unknown option " << arg << endl;
 188                                                 error = true;
 189                                         }
 190                                 }
 191                         } else {
 192                                 // short options
 193                                 for (int j = 1; arg[j] != '\0'; ++j) {
 194                                         switch (arg[j]) {
 195                                                 case 'd':
 196                                                         config.game.video.dblbuf = false;
 197                                                         break;
 198                                                 case 'm':
 199                                                         ++i;
 200                                                         if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 201                                                                 cerr << "missing argument to -m" << endl;
 202                                                                 error = true;
 203                                                         } else {
 204                                                                 config.game.video.msaa = strtoul(argv[i], nullptr, 10);
 205                                                         }
 206                                                         break;
 207                                                 case 'n':
 208                                                         ++i;
 209                                                         if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 210                                                                 cerr << "missing argument to -n" << endl;
 211                                                                 error = true;
 212                                                         } else {
 213                                                                 n = strtoul(argv[i], nullptr, 10);
 214                                                         }
 215                                                         break;
 216                                                 case 's':
 217                                                         ++i;
 218                                                         if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 219                                                                 cerr << "missing argument to -s" << endl;
 220                                                                 error = true;
 221                                                         } else {
 222                                                                 config.gen.seed = strtoul(argv[i], nullptr, 10);
 223                                                         }
 224                                                         break;
 225                                                 case 't':
 226                                                         ++i;
 227                                                         if (i >= argc || argv[i] == nullptr || argv[i][0] == '\0') {
 228                                                                 cerr << "missing argument to -t" << endl;
 229                                                                 error = true;
 230                                                         } else {
 231                                                                 t = strtoul(argv[i], nullptr, 10);
 232                                                         }
 233                                                         break;
 234                                                 case '-':
 235                                                         // stopper
 236                                                         options = false;
 237                                                         break;
 238                                                 default:
 239                                                         cerr << "unknown option " << arg[j] << endl;
 240                                                         error = true;
 241                                                         break;
 242                                         }
 243                                 }
 244                         }
 245                 } else {
 246                         cerr << "unable to interpret argument "
 247                                 << i << " (" << arg << ")" << endl;
 248                         error = true;
 249                 }
 250         }
 251
 252         if (error) {
 253                 mode = ERROR;
 254                 return;
 255         }
 256
 257         if (config.env.asset_path.empty()) {
 258                 config.env.asset_path = default_asset_path();
 259         } else if (
 260                 config.env.asset_path[config.env.asset_path.size() - 1] != '/' &&
 261                 config.env.asset_path[config.env.asset_path.size() - 1] != '\\'
 262         ) {
 263                 config.env.asset_path += '/';
 264         }
 265         if (config.env.save_path.empty()) {
 266                 config.env.save_path = default_save_path();
 267         } else if (
 268                 config.env.save_path[config.env.save_path.size() - 1] != '/' &&
 269                 config.env.save_path[config.env.save_path.size() - 1] != '\\'
 270         ) {
 271                 config.env.save_path += '/';
 272         }
 273
 274         if (n > 0) {
 275                 if (t > 0) {
 276                         mode = FIXED_FRAME_LIMIT;
 277                 } else {
 278                         mode = FRAME_LIMIT;
 279                 }
 280         } else if (t > 0) {
 281                 mode = TIME_LIMIT;
 282         } else {
 283                 mode = NORMAL;
 284         }
 285 }
 286
 287 int Runtime::Execute() {
 288         if (mode == ERROR) {
 289                 return 1;
 290         }
 291
 292         InitHeadless init_headless;
 293
 294         switch (target) {
 295                 default:
 296                 case STANDALONE:
 297                         RunStandalone();
 298                         break;
 299                 case SERVER:
 300                         RunServer();
 301                         break;
 302                 case CLIENT:
 303                         RunClient();
 304                         break;
 305         }
 306
 307         return 0;
 308 }
 309
 310 void Runtime::RunStandalone() {
 311         Init init(config.game.video.dblbuf, config.game.video.msaa);
 312
 313         Environment env(init.window, config.env);
 314         env.viewport.VSync(config.game.video.vsync);
 315
 316         WorldSave save(config.env.GetWorldPath(config.world.name));
 317         if (save.Exists()) {
 318                 save.Read(config.world);
 319                 save.Read(config.gen);
 320         } else {
 321                 save.Write(config.world);
 322                 save.Write(config.gen);
 323         }
 324
 325         Application app(env);
 326         standalone::MasterState world_state(env, config.game, config.gen, config.world, save);
 327         app.PushState(&world_state);
 328         Run(app);
 329 }
 330
 331 void Runtime::RunServer() {
 332         HeadlessEnvironment env(config.env);
 333
 334         WorldSave save(config.env.GetWorldPath(config.world.name));
 335         if (save.Exists()) {
 336                 save.Read(config.world);
 337                 save.Read(config.gen);
 338         } else {
 339                 save.Write(config.world);
 340                 save.Write(config.gen);
 341         }
 342
 343         HeadlessApplication app(env);
 344         server::ServerState server_state(env, config.gen, config.world, save, config.game);
 345         app.PushState(&server_state);
 346         Run(app);
 347 }
 348
 349 void Runtime::RunClient() {
 350         Init init(config.game.video.dblbuf, config.game.video.msaa);
 351
 352         Environment env(init.window, config.env);
 353         env.viewport.VSync(config.game.video.vsync);
 354
 355         Application app(env);
 356         client::MasterState client_state(env, config.game, config.world);
 357         app.PushState(&client_state);
 358         Run(app);
 359 }
 360
 361 void Runtime::Run(HeadlessApplication &app) {
 362         switch (mode) {
 363                 default:
 364                 case NORMAL:
 365                         app.Run();
 366                         break;
 367                 case FRAME_LIMIT:
 368                         app.RunN(n);
 369                         break;
 370                 case TIME_LIMIT:
 371                         app.RunT(t);
 372                         break;
 373                 case FIXED_FRAME_LIMIT:
 374                         app.RunS(n, t);
 375                         break;
 376         }
 377 }
 378
 379 }