/**
* @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 );
credits_t price;
price = ship_buyPrice( ship );
/* 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( price - player_shipPrice(player.p->name))) {
credits_t creditdifference = 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 Player attempts to buy a ship, trading the current ship in.
* @param wid Window player is buying ship from.
* @param str Unused.
*/
static void shipyard_trade( unsigned int wid, char* str )
{
(void)str;
char *shipname, buf[ECON_CRED_STRLEN], buf2[ECON_CRED_STRLEN],
buf3[ECON_CRED_STRLEN], buf4[ECON_CRED_STRLEN];
Ship* ship;
shipname = toolkit_getImageArray( wid, "iarShipyard" );
if (strcmp(shipname, "None") == 0)
return;
ship = ship_get( shipname );
credits_t targetprice = ship_buyPrice(ship);
credits_t playerprice = player_shipPrice(player.p->name);
if (land_errDialogue( shipname, "tradeShip" ))
return;
credits2str( buf, targetprice, 2 );
credits2str( buf2, playerprice, 2 );
credits2str( buf3, targetprice - playerprice, 2 );
credits2str( buf4, playerprice - targetprice, 2 );
/* Display the correct dialogue depending on the new ship's price versus the player's. */
if ( targetprice == playerprice ) {
if (dialogue_YesNo("Are you sure?", /* confirm */
"Your %s is worth %s, exactly as much as the new ship, so no credits need be exchanged. Are you sure you want to trade your ship in?",
player.p->ship->name, buf2)==0)
return;
}
else if ( targetprice < playerprice ) {
if (dialogue_YesNo("Are you sure?", /* confirm */
"Your %s is worth %s credits, more than the new ship. For your ship, you will get the new %s and %s credits. Are you sure you want to trade your ship in?",
player.p->ship->name, buf2, ship->name, buf4)==0)
return;
}
else if ( targetprice > playerprice ) {
if (dialogue_YesNo("Are you sure?", /* confirm */
"Your %s is worth %s, so the new ship will cost %s credits. Are you sure you want to trade your ship in?",
player.p->ship->name, buf2, buf3)==0)
return;
}
/* player just got a new ship */
if (player_newShip( ship, NULL, 1, 0 ) == NULL)
return; /* Player aborted the naming process. */
player_modCredits( playerprice - targetprice ); /* Modify credits by the difference between ship values. */
land_refuel();
/* The newShip call will trigger a loadGUI that will recreate the land windows. Therefore the land ID will
* be void. We must reload in in order to properly update it again.*/
wid = land_getWid(LAND_WINDOW_SHIPYARD);
/* Update shipyard. */
shipyard_update(wid, NULL);
}
/**
* @brief Player attempts to buy a ship, trading the current ship in.
* @param wid Window player is buying ship from.
* @param str Unused.
*/
static void shipyard_trade( unsigned int wid, char* str )
{
(void)str;
char *shipname, buf[ECON_CRED_STRLEN], buf2[ECON_CRED_STRLEN],
buf3[ECON_CRED_STRLEN], buf4[ECON_CRED_STRLEN];
Ship* ship;
shipname = toolkit_getImageArray( wid, "iarShipyard" );
ship = ship_get( shipname );
credits_t targetprice = ship->price;
credits_t playerprice = player_shipPrice(player.p->name);
if (land_errDialogue( shipname, "trade" ))
return;
credits2str( buf, targetprice, 2 );
credits2str( buf2, playerprice, 2 );
credits2str( buf3, targetprice - playerprice, 2 );
credits2str( buf4, playerprice - targetprice, 2 );
/* Display the correct dialogue depending on the new ship's price versus the player's. */
if ( targetprice == playerprice ) {
if (dialogue_YesNo("Are you sure?", /* confirm */
"Your %s is worth %s, exactly as much as the new ship, so no credits need be exchanged. Are you sure you want to trade your ship in?",
player.p->ship->name, buf2)==0)
return;
}
else if ( targetprice < playerprice ) {
if (dialogue_YesNo("Are you sure?", /* confirm */
"Your %s is worth %s credits, more than the new ship. For your ship, you will get the new %s and %s credits. Are you sure you want to trade your ship in?",
player.p->ship->name, buf2, ship->name, buf4)==0)
return;
}
else if ( targetprice > playerprice ) {
if (dialogue_YesNo("Are you sure?", /* confirm */
"Your %s is worth %s, so the new ship will cost %s credits. Are you sure you want to trade your ship in?",
player.p->ship->name, buf2, buf3)==0)
return;
}
/* player just got a new ship */
if (player_newShip( ship, NULL, 1, 0 ) == NULL)
return; /* Player aborted the naming process. */
player_modCredits( playerprice - targetprice ); /* Modify credits by the difference between ship values. */
land_checkAddRefuel();
/* Update shipyard. */
shipyard_update(wid, NULL);
}
