main.cpp

/*
 * Bermuda Syndrome engine rewrite
 * Copyright (C) 2007-2011 Gregory Montoir
 */

#include "getopt.h"
#include <sys/stat.h>
#ifdef __EMSCRIPTEN__
#include <emscripten.h>
#endif
#include "game.h"
#include "systemstub.h"

static const char *USAGE =
    "Bermuda Syndrome\n"
    "Usage: bs [OPTIONS]...\n"
    "  --datapath=PATH    Path to data files (default 'DATA')\n"
    "  --savepath=PATH    Path to save files (default '.')\n"
    "  --musicpath=PATH   Path to music files (default 'MUSIC')\n"
    "  --fullscreen       Fullscreen display\n"
    "  --widescreen=MODE  Widescreen mode ('default', '4:3' or '16:9')\n";

static Game *g_game;
static SystemStub *g_stub;

static void init(const char *dataPath, const char *savePath, const char *musicPath, bool fullscreen, int screenMode) {
    g_stub = SystemStub_SDL_create();
    g_game = new Game(g_stub, dataPath ? dataPath : "DATA", savePath ? savePath : ".", musicPath ? musicPath : "MUSIC");
    g_game->init(fullscreen, screenMode);
}

static void fini() {
    g_game->fini();
    delete g_game;
    delete g_stub;
    g_stub = 0;
}

#ifdef __EMSCRIPTEN__
static void mainLoop() {
    if (!g_stub->_quit) {
        g_game->mainLoop();
    }
}
#endif

#undef main

#define _CRT_INTERNAL_NONSTDC_NAMES 1
#include <sys/stat.h>
#if !defined(S_ISREG) && defined(S_IFMT) && defined(S_IFREG)
#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
#endif
#if !defined(S_ISDIR) && defined(S_IFMT) && defined(S_IFDIR)
#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
#endif

int main(int argc, char *argv[]) {
    char *dataPath = 0;
    char *savePath = 0;
    char *musicPath = 0;
    bool fullscreen = false;
    int screenMode = SCREEN_MODE_DEFAULT;
    if (argc == 2) {
        // data path as the only command line argument
        struct stat st;
        if (stat(argv[1], &st) == 0 && (S_ISDIR(st.st_mode) || S_ISREG(st.st_mode))) {
            dataPath = strdup(argv[1]);
        }
    }
    while (1) {
        static struct option options[] = {
            { "datapath",   required_argument, 0, 1 },
            { "savepath",   required_argument, 0, 2 },
            { "musicpath",  required_argument, 0, 3 },
            { "fullscreen", no_argument,       0, 4 },
            { "widescreen", required_argument, 0, 5 },
            { "help",       no_argument,       0, 0 },
            { 0, 0, 0, 0 }
        };
        int index;
        const int c = getopt_long(argc, argv, "", options, &index);
        if (c == -1) {
            break;
        }
        switch (c) {
        case 1:
            dataPath = strdup(optarg);
            break;
        case 2:
            savePath = strdup(optarg);
            break;
        case 3:
            musicPath = strdup(optarg);
            break;
        case 4:
            fullscreen = true;
            break;
        case 5: {
                static const struct {
                    const char *name;
                    int mode;
                } modes[] = {
                    { "default", SCREEN_MODE_DEFAULT },
                    { "4:3",  SCREEN_MODE_4_3 },
                    { "16:9", SCREEN_MODE_16_9 },
                    { 0, -1 }
                };
                for (int i = 0; modes[i].name; ++i) {
                    if (strcmp(modes[i].name, optarg) == 0) {
                        screenMode = modes[i].mode;
                        break;
                    }
                }
            }
            break;
        default:
            fprintf(stdout, "%s", USAGE);
            return 0;
        }
    }
    g_debugMask = DBG_INFO; // | DBG_GAME | DBG_OPCODES | DBG_DIALOGUE;
    init(dataPath, savePath, musicPath, fullscreen, screenMode);
#ifdef __EMSCRIPTEN__
    emscripten_set_main_loop(mainLoop, kCycleDelay, 0);
#else
    uint32_t lastFrameTimeStamp = g_stub->getTimeStamp();
    while (!g_stub->_quit) {
        g_game->mainLoop();
        const uint32_t end = lastFrameTimeStamp + kCycleDelay;
        do {
            g_stub->sleep(10);
            g_stub->processEvents();
        } while (!g_stub->_pi.fastMode && g_stub->getTimeStamp() < end);
        lastFrameTimeStamp = g_stub->getTimeStamp();
    }
    fini();
#endif
    free(dataPath);
    free(savePath);
    free(musicPath);
    return 0;
}