Function GetFieldType

src/clear_map.h:159–163

* Get the field type (production stage) of the field * @param t the field to get the type of * @pre GetClearGround(t) == CLEAR_FIELDS * @return the field type */

 * @return the field type
 */
inline uint GetFieldType(Tile t)
{
	assert(GetClearGround(t) == CLEAR_FIELDS);
	return GB(t.m3(), 0, 4);
}

/**
 * Set the field type (production stage) of the field