Function Tools_Index_IsValid

src/tools.c:103–124

* Check whether an encoded index is valid. * * @param id The encoded index to check for validity. * @return True if valid, false if not. */

 * @return True if valid, false if not.
 */
bool Tools_Index_IsValid(uint16 encoded)
{
	uint16 index;

	if (encoded == 0) return false;

	index = Tools_Index_Decode(encoded);

	switch (Tools_Index_GetType(encoded)) {
		case IT_UNIT:
			if (index >= UNIT_INDEX_MAX) return false;
			return Unit_Get_ByIndex(index)->o.flags.s.used && Unit_Get_ByIndex(index)->o.flags.s.allocated;

		case IT_STRUCTURE:
			if (index >= STRUCTURE_INDEX_MAX_HARD) return false;
			return Structure_Get_ByIndex(index)->o.flags.s.used;

		case IT_TILE : return true;

		default: return false;
	}
}

/**
 * Gets the packed tile corresponding to the given encoded index.