static int commodity_canSell( char *name )
{
int failure;
failure = 0;
if (pilot_cargoOwned( player.p, name ) == 0) {
land_errDialogueBuild("You can't sell something you don't have!");
failure = 1;
}
return !failure;
}
/**
* @brief Makes sure it's sane to buy a ship, trading the old one in simultaneously.
* @param shipname Ship being bought.
*/
int shipyard_canTrade( char* shipname )
{
int failure = 0;
Ship* ship;
ship = ship_get( shipname );
/* Must have the necessary license, enough credits, and be able to swap ships. */
if (!player_hasLicense(ship->license)) {
land_errDialogueBuild( "You lack the %s.", ship->license );
failure = 1;
}
if (!player_hasCredits( ship->price - player_shipPrice(player.p->name))) {
credits_t creditdifference = ship->price - (player_shipPrice(player.p->name) + player.p->credits);
char buf[ECON_CRED_STRLEN];
credits2str( buf, creditdifference, 2 );
land_errDialogueBuild( "You need %s more credits.", buf);
failure = 1;
}
if (!can_swap( shipname ))
failure = 1;
return !failure;
}
/**
* @brief Makes sure it's sane to buy a ship.
* @param shipname Ship being bought.
*/
int shipyard_canBuy ( char *shipname, Planet *planet )
{
Ship* ship;
ship = ship_get( shipname );
int failure = 0;
credits_t price;
price = ship_buyPrice(ship);
/* Must have enough credits and the necessary license. */
if ((!player_hasLicense(ship->license)) &&
((planet == NULL) || (!planet_isBlackMarket(planet)))) {
land_errDialogueBuild( "You lack the %s.", ship->license );
failure = 1;
}
if (!player_hasCredits( price )) {
char buf[ECON_CRED_STRLEN];
credits2str( buf, price - player.p->credits, 2 );
land_errDialogueBuild( "You need %s more credits.", buf);
failure = 1;
}
return !failure;
}
static int commodity_canBuy( char *name )
{
int failure;
unsigned int q, price;
Commodity *com;
char buf[ECON_CRED_STRLEN];
failure = 0;
q = commodity_getMod();
com = commodity_get( name );
price = planet_commodityPrice( land_planet, com ) * q;
if (!player_hasCredits( price )) {
credits2str( buf, price - player.p->credits, 2 );
land_errDialogueBuild("You need %s more credits.", buf );
failure = 1;
}
if (pilot_cargoFree(player.p) <= 0) {
land_errDialogueBuild("No cargo space available!");
failure = 1;
}
return !failure;
}
