/**
* @main
* This room is a craft shop which handles potions and salves.
* Do not forget important things like set_save_dir() and
* set_theft_handler().
* @index potion_shop
* @started Thu Oct 29 1998
* @author Gruper
* @see help::craft_shop
*/
#define CONVERT "/global/events"->convert_message
#define MIN_VOLUME 1000
inherit "/std/shops/craft_shop_category";
/* Function prototypes */
void shopkeeper_say( string message );
int is_potion_or_salve( object ob );
void set_message_function( function wossname );
/* This is the function that handles messages to the player. */
private nosave function _message_function;
/* If shopkeeper is set, the messages from message_function
* will come from the shopkeeper. */
private nosave string _shopkeeper;
/**
* @ignore
*/
void create() {
set_message_function( (: shopkeeper_say :) );
::create();
set_allowed_to_sell( (: is_potion_or_salve :) );
}
/**
* This method sets the message function for the shop.
* The message function can be useful to handle messages to
* the player via the shopkeeper. The function should be of
* type string -> void. If message_function is not set, we
* default to a rather nice function. If message_function
* is explicitly set to 0, no message will be given apart from
* the standard messages from craft_shop. It is called from
* is_potion_or_salve() and can also be used in do_buy() etc.
* @param wossname A pointer to the function
* @example set_message_function( (: nudity_say :) ),
* where nudity_say looks like void nudity_say( string message ).
* When using
*/
void set_message_function( function wossname ) {
_message_function = wossname;
}
/**
* @return Pointer to the message function
*/
function query_message_function() {
return _message_function;
}
/**
* This method sets the <b> name </b> of the shopkeeper that
* the shop will look for when giving messages to the player.
* @param name A name that identifies the shopkeeper to find_match
*/
void set_shopkeeper( string name ) {
_shopkeeper = name;
}
/**
* @return The name of the shopkeeper
*/
string query_shopkeeper() {
return _shopkeeper;
}
/**
* This is the default message function.
* If the shopkeeper is in the shop, they will try to say message.
*/
void shopkeeper_say( string message ) {
object *frog; /* the shopkeeper */
if( !message || message == "" )
message = "Tuppence a bucket, well stamped down!";
if( _shopkeeper ) {
frog = match_objects_for_existence( _shopkeeper, this_object() );
if( sizeof( frog ) == 1 ) {
frog[0]->init_command( "' "+ message );
/* Ok, we managed to give the message through the shopkeeper,
* so we'll just bugger off. */
return;
}
}
/* We couldn't find a shopkeeper, so we just write the message.
* Boring, if you ask me. */
write( message );
return;
}
/**
* This is the default function for checking if something can
* be sold in a potion shop. If you override this, there is no
* reason to inherit this file, so you can't. It will accept any
* object that contains something which has an eat effect or an
* apply effect.
* @param ob The object that someone is trying to sell to the shop
* @return success 1 if the object can be sold, 0 if not
*/
int is_potion_or_salve( object ob ) {
object thing, *contents;
int found_something; // Impure stuff!
string contents_string;
if( !ob->query_volume() ) {
tell_creator( this_player(), "ob has 0 volume.\n" );
if( _message_function )
evaluate( _message_function,
CONVERT( "There's nothing in "+ ob->the_short() +" that "
"can be described as either potion or salve, "+
this_player()->the_short() +".\n" ) );
return 0;
} else if( ob->query_volume() < MIN_VOLUME ||
ob->query_volume() < ( 7 * ob->query_max_volume() / 10 ) ) {
tell_creator( this_player(), "ob does not contain enough stuff.\n" );
if( _message_function )
evaluate( _message_function,
CONVERT( "We don't deal in quantities smaller than a cup, "+
this_player()->the_short() +".\n" ) );
return 0;
}
contents = all_inventory( ob );
if( !sizeof( contents ) ) {
tell_creator( this_player(), "No contents.\n" );
if( _message_function )
evaluate( _message_function,
CONVERT( ob->the_short() +" is empty, "+
this_player()->the_short() +"!\n" ) );
return 0;
}
foreach( thing in contents )
if( !( sizeof( thing->query_apply_effects() ) +
sizeof( thing->query_eat_effects() ) ) ) {
found_something = 1; // Impure
} else {
tell_creator( this_player(), "thing %s, effect %O.\n",
thing->query_short(), thing->query_eat_effects() );
}
contents_string = ( sizeof( contents ) > 1 ) ?
query_multiple_short( contents, "the" ) +" are neither potions nor "
"salves, or they are " :
contents[0]->the_short() +" is neither potion nor salve, or it is ";
// Found impure stuff
if( found_something ) {
if( _message_function )
evaluate( _message_function,
CONVERT( "Either "+ contents_string +"impure, or so weak as "
"to make no difference, "+ this_player()->the_short() +"." ) );
return 0;
}
return 1;
}
