SH: Symptom Hash

LD: Lethal Dose

CS: Current Severity (if CS >= LD, you = dead)

CT: Contagiousness

RP: Recovery Points (positive means your sim is recovering, negative means it will get worse)

RHC: Recovery Hour Count (recovery points are subtracted from severity when this count hits 6 or so)

UNK: Your guess is as good as mine.







HOW THE PLAGUE WORKS:



Every disease has a "Severity" value, a "Death Severity", a "Contagiousness" value, and a type. There are 5 predefined types of plague, with predefined attributes (don't recall them right now) and symptom,, as well as "mysterious" plagues that a mathematically determined (generally random) set of exactly 2 symptoms per plague, and customizable values of initial severity, contagiousness, and deadliness.



A sim with the plague has a chance of leaving behind a "plague spread" tile that has a lifespan depending on the contagiousness of the plague approximately every half hour. Every hour, the sim has a chance of exhibiting a plague symptom, and his recovery total is checked. Every 6 hours, the recovery total is subtracted from the disease severity unless lethality of disease is -1 (special). Curepoints are then reset. A lethality -1 (nonlethal) disease will only be cured when curepoints > severity, but curepoints never reset for a "nonlethal" disease. Death will occur at this 6-hour interval if severity has exceeded lethal dosage.



Recovery works as follows:

+8 if a sim is sleeping. Ignore all subsequent values below.

+6 if a sim is sitting

+4 if the sim's comfort/energy (each)  is >= 50 (75%)

-4 if a sim's comfort/energy (each) is < 0 (50%)

Sims do not recover or worsen if they are "off lot". Sims do not recover or worsen unless they are visitor type 0 (resident).



The recovery value earned per interval reduces the "Severity" value by that amount (or increases it!). If the severity of the plague reaches 0, the sim recovers. If the severity of the plague exceeds the "deadliness" value for a potentially fatal plague, he dies. Recovery is not checked on community lots. In fact, nothing is checked on community lots as of sometime after TS2Original, and as of this writing (TS2OFBp2), sims cannot suffer any plague symptoms, nor spread the plague, on a community lot.



The available types of standard plague will be summarized shortly. "Mysterious" plagues can be acquired through the Biotech station (gives a randomly generated plague), or through a nefarious deeds (by installing hacks and objects that produce plagues!).



STANDARD PLAGUES

Morning Sickness

LD: -1

SS: 1d20 + 29

CT: -1



Food Poisoning

LD: 120

SS: 1d60 + 59

CT: -1



Cold

LD: 40 (special)

SS: 1d20+9

CT: 80

Special Note: Becomes pneumonia if severity hits lethal dosage. If this is not possible for some mysterious reason, death results (normally cannot happen).



Pneumonia

LD: 120

SS: 1d20 + 69

CT: 20



Flu

LD: 120

SS: 1d10 + 29

CT: 70



Mysterious

SH: 1d100 + 99 (symptom hash determines resulting two random symptoms)

LD: 120

SS: Variable

CT: 1d90 + 9



Diseases with CT: -1 are non-contagious. Diseases with LD: -1 are never lethal, and never decrease in severity, and can be cured if curepoints > severity.