/**************************************************************************** Set the given terrain at the specified tile. ****************************************************************************/ void tile_set_terrain(struct tile *ptile, struct terrain *pterrain) { /* The terrain change is valid if one of the following is TRUE: * - pterrain is NULL (= unknown terrain) * - ptile is a virtual tile * - pterrain does not has the flag TER_NO_CITIES * - there is no city on ptile. * This should be read as: The terrain change is INVALID if a terrain with * the flag TER_NO_CITIES is given for a real tile with a city (i.e. all * check evaluate to TRUE). */ fc_assert_msg(NULL == pterrain || tile_virtual_check(ptile) || !terrain_has_flag(pterrain, TER_NO_CITIES) || NULL == tile_city(ptile), "At (%d, %d), the terrain \"%s\" (nb %d) doesn't " "support cities, whereas \"%s\" (nb %d) is built there.", TILE_XY(ptile), terrain_rule_name(pterrain), terrain_number(pterrain), city_name(tile_city(ptile)), tile_city(ptile)->id); ptile->terrain = pterrain; if (NULL != pterrain && NULL != ptile->resource && terrain_has_resource(pterrain, ptile->resource)) { ptile->resource_valid = TRUE; } else { ptile->resource_valid = FALSE; } }
/**************************************************************************** Set the given terrain at the specified tile. ****************************************************************************/ void tile_set_terrain(struct tile *ptile, struct terrain *pterrain) { ptile->terrain = pterrain; if (NULL != pterrain && NULL != ptile->resource && terrain_has_resource(pterrain, ptile->resource)) { /* cannot use set_special() for internal values */ BV_SET(ptile->special, S_RESOURCE_VALID); } else { BV_CLR(ptile->special, S_RESOURCE_VALID); } }