Adds a trait that makes you more likely to get shitty items in the mail (#16855)

* Adds a trait to turn off receiving mail

* Now reduces the weight of everything and removes anything below 0

* renamed trait

code/__DEFINES/traits.dm

@@ -226,6 +226,7 @@
 #define TRAIT_BOTTOMLESS_STOMACH "bottomless_stomach" // Can never be full
 #define TRAIT_MESONS			"mesons"
 #define TRAIT_MAGBOOTS			"magboots"
+#define TRAIT_BADMAIL			"badmail"	//Your mail is going to be worse than average
 /// This person is crying
 #define TRAIT_CRYING "crying"
 

code/datums/traits/negative.dm

@@ -854,3 +854,9 @@
 /datum/quirk/monochromatic/remove()
 	if(quirk_holder)
 		quirk_holder.remove_client_colour(/datum/client_colour/monochrome)
+
+/datum/quirk/nomail
+	name = "Loser"
+	desc = "You are a complete nobody, no one would ever send you anything worthwhile in the mail."
+	value = -1
+	mob_trait = TRAIT_BADMAIL

code/game/objects/items/mail.dm

@@ -166,6 +166,15 @@
 			else
 				goodies += job_goodies
 
+	if(recipient.current && HAS_TRAIT(recipient.current, TRAIT_BADMAIL))	//reduce the weight of every item by 10
+		for(var/item in goodies)
+			goodies[item] -= 10
+			if(goodies[item] <= 0)	 //remove everything with a weight below 0
+				goodies -= item
+
+	if(!goodies) //if everything was removed for some reason
+		return FALSE 
+
 	for(var/iterator in 1 to goodie_count)
 		var/target_good = pickweight(goodies)
 		var/atom/movable/target_atom = new target_good(src)