/**
* @brief Attempts to sell a commodity.
* @param wid Window selling commodity from.
* @param str Unused.
*/
static void commodity_sell( unsigned int wid, char* str )
{
(void)str;
char *comname;
Commodity *com;
unsigned int q;
credits_t price;
HookParam hparam[3];
/* Get parameters. */
q = commodity_getMod();
comname = toolkit_getList( wid, "lstGoods" );
com = commodity_get( comname );
price = planet_commodityPrice( land_planet, com );
/* Remove commodity. */
q = pilot_cargoRm( player.p, com, q );
price = price * (credits_t)q;
player_modCredits( price );
land_checkAddRefuel();
commodity_update(wid, NULL);
/* Run hooks. */
hparam[0].type = HOOK_PARAM_STRING;
hparam[0].u.str = comname;
hparam[1].type = HOOK_PARAM_NUMBER;
hparam[1].u.num = q;
hparam[2].type = HOOK_PARAM_SENTINEL;
hooks_runParam( "comm_sell", hparam );
if (land_takeoff)
takeoff(1);
}
/**
* @brief Updates the commodity window.
* @param wid Window to update.
* @param str Unused.
*/
static void commodity_update( unsigned int wid, char* str )
{
(void)str;
char buf[PATH_MAX];
char *comname;
Commodity *com;
comname = toolkit_getList( wid, "lstGoods" );
if ((comname==NULL) || (strcmp( comname, "None" )==0)) {
snprintf( buf, PATH_MAX,
"NA Tons\n"
"NA Credits/Ton\n"
"\n"
"NA Tons\n" );
window_modifyText( wid, "txtDInfo", buf );
window_modifyText( wid, "txtDesc", "No outfits available." );
}
com = commodity_get( comname );
/* modify text */
snprintf( buf, PATH_MAX,
"%d Tons\n"
"%"CREDITS_PRI" Credits/Ton\n"
"\n"
"%d Tons\n",
pilot_cargoOwned( player.p, comname ),
planet_commodityPrice( land_planet, com ),
pilot_cargoFree(player.p));
window_modifyText( wid, "txtDInfo", buf );
window_modifyText( wid, "txtDesc", com->description );
}
/**
* @brief Adds some mission cargo to the player. He cannot sell it nor get rid of it
* unless he abandons the mission in which case it'll get eliminated.
*
* @luaparam cargo Name of the cargo to add.
* @luaparam quantity Quantity of cargo to add.
* @luareturn The id of the cargo which can be used in cargoRm.
* @luafunc cargoAdd( cargo, quantity )
*/
static int misn_cargoAdd( lua_State *L )
{
const char *cname;
Commodity *cargo;
int quantity, ret;
Mission *cur_mission;
/* Parameters. */
cname = luaL_checkstring(L,1);
quantity = luaL_checkint(L,2);
cargo = commodity_get( cname );
/* Check if the cargo exists. */
if(cargo == NULL) {
NLUA_ERROR(L, "Cargo '%s' not found.", cname);
return 0;
}
cur_mission = misn_getFromLua(L);
/* First try to add the cargo. */
ret = pilot_addMissionCargo( player.p, cargo, quantity );
mission_linkCargo( cur_mission, ret );
lua_pushnumber(L, ret);
return 1;
}
/**
* @brief Makes sure the commodity is valid or raises a Lua error.
*
* @param L State currently running.
* @param ind Index of the commodity to validate.
* @return The commodity (doesn't return if fails - raises Lua error ).
*/
Commodity* luaL_validcommodity( lua_State *L, int ind )
{
Commodity *o;
if (lua_iscommodity(L, ind))
o = luaL_checkcommodity(L, ind);
else if (lua_isstring(L, ind))
o = commodity_get( lua_tostring(L, ind) );
else {
luaL_typerror(L, ind, COMMODITY_METATABLE);
return NULL;
}
if (o == NULL)
NLUA_ERROR(L, "Commodity is invalid.");
return o;
}
/**
* @brief Adds some mission cargo to the player. He cannot sell it nor get rid of it
* unless he abandons the mission in which case it'll get eliminated.
*
* @luaparam cargo Name of the cargo to add.
* @luaparam quantity Quantity of cargo to add.
* @luareturn The id of the cargo which can be used in rmCargo.
* @luafunc addCargo( cargo, quantity )
*/
static int misn_addCargo( lua_State *L )
{
const char *cname;
Commodity *cargo;
int quantity, ret;
/* Parameters. */
cname = luaL_checkstring(L,1);
quantity = luaL_checkint(L,2);
cargo = commodity_get( cname );
/* First try to add the cargo. */
ret = pilot_addMissionCargo( player, cargo, quantity );
mission_linkCargo( cur_mission, ret );
lua_pushnumber(L, ret);
return 1;
}
/**
* @brief Gets a commodity.
*
* @usage s = commodity.get( "Food" ) -- Gets the food commodity
*
* @luaparam s Name of the commodity to get.
* @luareturn The commodity matching name or nil if error.
* @luafunc get( s )
*/
static int commodityL_get( lua_State *L )
{
const char *name;
Commodity *commodity;
/* Handle parameters. */
name = luaL_checkstring(L,1);
/* Get commodity. */
commodity = commodity_get( name );
if (commodity == NULL) {
NLUA_ERROR(L,"Commodity '%s' not found!", name);
return 0;
}
/* Push. */
lua_pushcommodity(L, commodity);
return 1;
}
/**
* @brief Buys the selected commodity.
* @param wid Window buying from.
* @param str Unused.
*/
static void commodity_buy( unsigned int wid, char* str )
{
(void)str;
char *comname;
Commodity *com;
unsigned int q;
credits_t price;
HookParam hparam[3];
/* Get selected. */
q = commodity_getMod();
comname = toolkit_getList( wid, "lstGoods" );
com = commodity_get( comname );
price = planet_commodityPrice( land_planet, com );
price *= q;
/* Check stuff. */
if (!player_hasCredits( price )) {
dialogue_alert( "Insufficient credits!" );
return;
}
else if (pilot_cargoFree(player.p) <= 0) {
dialogue_alert( "Insufficient free space!" );
return;
}
/* Make the buy. */
q = pilot_cargoAdd( player.p, com, q );
player_modCredits( -price );
land_checkAddRefuel();
commodity_update(wid, NULL);
/* Run hooks. */
hparam[0].type = HOOK_PARAM_STRING;
hparam[0].u.str = comname;
hparam[1].type = HOOK_PARAM_NUMBER;
hparam[1].u.num = q;
hparam[2].type = HOOK_PARAM_SENTINEL;
hooks_runParam( "comm_buy", hparam );
if (land_takeoff)
takeoff(1);
}
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;
}