/* /lib/germ.c
* From the Dead Souls Object Library
* Germs which cause disease
* created by Descartes of Borg 940905
* Version: @(#) germ.c 1.12@(#)
* Last modified: 97/01/01
*/
#include <lib.h>
#include <rooms.h>
#include <daemons.h>
inherit LIB_ITEM;
private int Communicable = 1;
mixed Cure = 0;
private static function Infect = 0;
private static int LastHeartBeat = time();
private mixed LifeSpan = 60;
private int CannotInfect = 0;
private string Type = "cold";
private string GermName = "generic germ";
private string array ImmuneRaces = ({ "android", "tree",
"plant", "elemental", "fish", "gargoyle", "god", "golem", "insect",
"slug", "snake", "wraith", "zombie", "bot", "strider", "vehicle",
"mech" });
mixed eventMultiply();
void init(){
::init();
set_heart_beat(1);
}
/* *************** /lib/germ.c data functions *************** */
int isGerm(){
return 1;
}
int GetCommunicable(){
return Communicable;
}
int GetCannotInfect(){
return CannotInfect;
}
int SetCannotInfect(int i){
if(!i) i = 0;
CannotInfect = i;
return CannotInfect;
}
int SetGermName(string str){
if(str) GermName = str;
return 1;
}
string GetGermName(){
return GermName;
}
/*
* int SetCommunicable(int x);
* int x - how infectious the germ is
*
* description:
* Makes the germ multiply and infect on its own. The more
* communicable, the easier it infects hosts and the easier
* it multiplies.
* Non-communicable germs must be forced to infect hosts
*
* returns the degree to which it is communicable
*/
int SetCommunicable(int x){
if( x > 100 ) x = 100;
return (Communicable = x);
}
mixed GetCure(){
return Cure;
}
/* mixed SetCure(mixed val)
* mixed val - function to test whether germ is cured
* or int indicating how hard it is to cure
* -1 means incurable
*
* description
* If a function, then that function will be used to
* determine if a given cure attempt is successful.
* That function should return 1 for success, 0 for failure
* If an int and -1, the germ is incurable
* If an int > 0, then that much of a cure of the right
* type is needed to cure the disease
*
* returns the successfully set value
*/
mixed SetCure(mixed val){
if(intp(val)){
Cure=val;
return;
}
return (Cure = val);
}
function GetInfect(){
return Infect;
}
/* function SetInfect(function f)
* function f - Function to be called whenever this germ
* infects a host
*
* Sets a function to be called whenever a host is infected
*
* returns the function to be called
*/
function SetInfect(function f){
Infect = f;
return f;
}
int GetLifeSpan(){
return LifeSpan;
}
/* int SetLifeSpan(int x)
* int x - the length of time the germ can live outside
* a host
*
* description
* Sets the amount of time that can pass for the germ
* to exist without a host
*
* returns the new life span
*/
int SetLifeSpan(mixed x){
if(functionp(x)){
x = evaluate(x);
}
if(!intp(x)) x = 60;
//if( x > 600 ) x = 600;
return (LifeSpan = x);
}
string GetType(){
return Type;
}
/* string SetType(string type)
* string type - the nature of the infection
*
* description
* determines what sort of cure is needed
* valid values are:
* viral
* bacterial
* parasite
* returns the new germ type
*/
string SetType(string type){
Type=type;
if(!Type || Type == "") Type = "foo";
return Type;
}
/* *************** /lib/germ.c events *************** */
/**
* This event is triggered from within the player object by some
* attempt by a cleric or other some such thing to cure the player.
*/
mixed eventCure(object who, int x, string type){
if( type != GetType() ){ // Can't cure this
return 0;
}
if( Cure == -1 ){ // This is incureable
return 0;
}
if( functionp(Cure) ){
mixed tmp = evaluate(Cure, who, x, type);
if( tmp != 1 ){
return tmp;
}
Cure = 0;
}
else if( intp(Cure) ){
Cure -= x;
}
else {
error("Bad argument 2 to eventCure().");
}
if( Cure > 0 ){
return 0;
}
set_heart_beat(0);
if(this_object()) this_object()->eventMove(ROOM_FURNACE);
eventDestruct();
return 1;
}
mixed eventEncounter(object who){
if( !living(who) ){
return 1;
}
if( !query_heart_beat() ){
set_heart_beat(5);
}
if(this_object() && environment(this_object())) eventMultiply();
return 1;
}
mixed eventInfect(object ob){
mixed tmp;
object *presbane;
string race;
string *bane = ({});
if(!ob) return;
if(RELOAD_D->GetWarmBootInProgress()) return 0;
if(environment() && base_name(environment()) == ROOM_VOID) return 0;
if(!this_object()) return 0;
if(!ob) return 0;
if(!ob->CanReceive(this_object())) return 0;
race = ob->GetRace();
//presbane = present("bane",ob);
presbane = filter(all_inventory(ob), (: inherits(LIB_BANE,$1) :) );
if(sizeof(presbane)){
foreach(object foo in presbane){
bane += foo->QueryBane();
}
}
if(sizeof(bane)){
if(member_array(GetKeyName(),bane) != -1) return 0;
if(member_array("all",bane) != -1) return 0;
foreach(string foo in GetId()){
if(member_array(foo,bane) != -1) return 0;
}
}
if(present(this_object()->GetKeyName(),ob) ) return 0;
if(race && member_array(race, ImmuneRaces) != -1) return 0;
if(ob->GetUndead() == 1) return 0;
if(ob->GetAquatic() == 1) return 0;
if(ob->GetNonCarbonBased() == 1) return 0;
if( functionp(Infect) ){
if(!this_object()) return 0;
tmp = evaluate(Infect, ob);
if( tmp == 1 ){
eventMove(ob);
if(this_object() && environment(this_object()) != ob){
eventMove(ROOM_FURNACE);
set_heart_beat(0);
}
else set_heart_beat(5);
return tmp;
}
}
if(!eventMove(ob)) eventMove(ROOM_FURNACE);
set_heart_beat(5);
return 1;
}
mixed eventMultiply(){
object ob, germ, winner;
object *targs;
if( Communicable > random(1000) && !CannotInfect){
if( (ob = environment()) && living(ob) ){
if(environment(environment())) ob = environment(environment());
}
if(!ob) return 0;
//move to the host's environment
if(!present(this_object()->GetName(),ob) ){
germ = new(base_name(this_object()));
if( germ && living(ob) ) germ->eventInfect(ob);
else if(!germ->eventMove(ob)) germ->eventMove(ROOM_FURNACE);
}
//find someone to infect
if(!sizeof(get_livings(ob))) return 0;
targs = filter(get_livings(ob), (: !query_carrying($1,base_name(this_object())) :) );
if(sizeof(targs)) winner = targs[random(sizeof(targs))];
if(this_object() && winner) new(base_name(this_object()))->eventInfect(winner);
}
return 1;
}
void eventSuffer(object ob){
}
/* *************** /lib/germ.c driver applies *************** */
static void create(){
item::create();
AddSave(({ "Communicable", "LifeSpan", "Type" }));
SetInvis(1);
SetMass(0);
SetValue(0);
SetPreventDrop("");
SetPreventGet("");
SetPreventPut("");
}
static void heart_beat(){
object env;
int interval;
if(!env = environment()) eventMove(ROOM_FURNACE);
interval = time() - LastHeartBeat;
LastHeartBeat = time();
if( Communicable ){
eventMultiply();
}
if( env && living(env) && environment(env) && member_array(env->GetRace(),ImmuneRaces) == -1){
eventSuffer(env);
}
if(LifeSpan == -1) return;
LifeSpan -= interval;
if( LifeSpan < 5 ){
if(this_object()) this_object()->eventMove(ROOM_FURNACE);
eventDestruct();
return;
}
}
