C++ (Cpp) load_sector Examples

Example #1

File: editor.cpp Project: mandaltapesh/supertux

void Editor::reload_level() {
  reload_request = false;
  enabled = true;
  tileselect.input_type = EditorInputGui::IP_NONE;
  // Re/load level
  level = NULL;
  levelloaded = true;

  ReaderMapping::translations_enabled = false;
  level = LevelParser::from_file(world ? (world->get_basedir() + "/" + levelfile) : levelfile);
  ReaderMapping::translations_enabled = true;

  tileset = TileManager::current()->get_tileset(level->get_tileset());
  load_sector("main");
  currentsector->activate("main");
  currentsector->camera->mode = Camera::MANUAL;
  layerselect.refresh_sector_text();
}

Example #2

File: AP_FlashStorage.cpp Project: BrendanSmith/ardupilot

// initialise storage
bool AP_FlashStorage::init(void)
{
    debug("running init()\n");
    
    // start with empty memory buffer
    memset(mem_buffer, 0, storage_size);

    // find state of sectors
    struct sector_header header[2];

    // read headers and possibly initialise if bad signature
    for (uint8_t i=0; i<2; i++) {
        if (!flash_read(i, 0, (uint8_t *)&header[i], sizeof(header[i]))) {
            return false;
        }
        bool bad_header = (header[i].signature != signature);
        enum SectorState state = (enum SectorState)header[i].state;
        if (state != SECTOR_STATE_AVAILABLE &&
            state != SECTOR_STATE_IN_USE &&
            state != SECTOR_STATE_FULL) {
            bad_header = true;
        }

        // initialise if bad header
        if (bad_header) {
            return erase_all();
        }
    }

    // work out the first sector to read from using sector states
    enum SectorState states[2] {(enum SectorState)header[0].state, (enum SectorState)header[1].state};
    uint8_t first_sector;

    if (states[0] == states[1]) {
        if (states[0] != SECTOR_STATE_AVAILABLE) {
            return erase_all();
        }
        first_sector = 0;
    } else if (states[0] == SECTOR_STATE_FULL) {
        first_sector = 0;
    } else if (states[1] == SECTOR_STATE_FULL) {
        first_sector = 1;
    } else if (states[0] == SECTOR_STATE_IN_USE) {
        first_sector = 0;
    } else if (states[1] == SECTOR_STATE_IN_USE) {
        first_sector = 1;
    } else {
        // doesn't matter which is first
        first_sector = 0;
    }

    // load data from any current sectors
    for (uint8_t i=0; i<2; i++) {
        uint8_t sector = (first_sector + i) & 1;
        if (states[sector] == SECTOR_STATE_IN_USE ||
            states[sector] == SECTOR_STATE_FULL) {
            if (!load_sector(sector)) {
                return erase_all();
            }
        }
    }

    // clear any write error
    write_error = false;
    reserved_space = 0;
    
    // if the first sector is full then write out all data so we can erase it
    if (states[first_sector] == SECTOR_STATE_FULL) {
        current_sector = first_sector ^ 1;
        if (!write_all()) {
            return erase_all();
        }
    }

    // erase any sectors marked full
    for (uint8_t i=0; i<2; i++) {
        if (states[i] == SECTOR_STATE_FULL) {
            if (!erase_sector(i)) {
                return false;
            }
        }
    }

    reserved_space = 0;
    
    // ready to use
    return true;
}