/**
* Verifies the town name is valid and unique.
* @param r random bits
* @param par town name parameters
* @param town_names if a name is generated, check its uniqueness with the set
* @return true iff name is valid and unique
*/
bool VerifyTownName(uint32 r, const TownNameParams *par, TownNames *town_names)
{
/* reserve space for extra unicode character and terminating '\0' */
char buf1[(MAX_LENGTH_TOWN_NAME_CHARS + 1) * MAX_CHAR_LENGTH];
char buf2[(MAX_LENGTH_TOWN_NAME_CHARS + 1) * MAX_CHAR_LENGTH];
GetTownName(buf1, par, r, lastof(buf1));
/* Check size and width */
if (Utf8StringLength(buf1) >= MAX_LENGTH_TOWN_NAME_CHARS) return false;
if (town_names != NULL) {
if (town_names->find(buf1) != town_names->end()) return false;
town_names->insert(buf1);
} else {
const Town *t;
FOR_ALL_TOWNS(t) {
/* We can't just compare the numbers since
* several numbers may map to a single name. */
const char *buf = t->name;
if (buf == NULL) {
GetTownName(buf2, t, lastof(buf2));
buf = buf2;
}
if (strcmp(buf1, buf) == 0) return false;
}
}
return true;
}
/**
* Fills buffer with town's name
* @param buff buffer start
* @param t we want to get name of this town
* @param last end of buffer
* @return pointer to terminating '\0'
*/
char *GetTownName(char *buff, const Town *t, const char *last)
{
TownNameParams par(t);
return GetTownName(buff, &par, t->townnameparts, last);
}
TownScene::TownScene(boost::shared_ptr<const Graph> default_frame_graph) :
SceneSelectorScene(default_frame_graph, GetTownName(), CreateSceneList(default_frame_graph))
{
}
