Gun Safety PSA - Keep your gun safeties on to prevent accidental disc…

…harges! (shiptest-ss13#3312)

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Unsafetied guns have a small chance to go off and fire on their own
under select conditions, which are currently:
- Being thrown and hitting something.
- Being on a ship when it takes off or docks. (Having it stored in a
stable container eg. lockers/crates, protect it from going off)
- Falling down while carrying a gun (Shoves, slips, etc)
- Paralyzes while holding a gun
- Having your gun holstered lowers the chance of it going off from
falling down due to the aforementioned causes
- Being EMPed if it's an energy weapon.

Modifies fire_casing so it works without a user.

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Makes guns a bit more dangerous (to yourself mainly), and reinforces the
fact guns are Dangerous Weapons and you should be careful with them by
adding a mechanical reason to have your safety on outside of combat and
properly securing your weapons.

~~adds more medical gameplay due to increased injuries~~

:cl:
add: Unsaftied guns can go off on their own.
code: Changes ammo casing firing code so it's able to work without a
user.
/:cl:

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code/__DEFINES/guns.dm

@@ -70,9 +70,9 @@
 #define MANUFACTURER_IMPORT "Lanchester Import Co."
 
 // Misfire chances if the gun's safety is off
-#define GUN_NO_SAFETY_MALFUNCTION_CHANCE_LOW 5
-#define GUN_NO_SAFETY_MALFUNCTION_CHANCE_MEDIUM 10
-#define GUN_NO_SAFETY_MALFUNCTION_CHANCE_HIGH 15
+#define GUN_NO_SAFETY_MALFUNCTION_CHANCE_LOW 100
+#define GUN_NO_SAFETY_MALFUNCTION_CHANCE_MEDIUM 100
+#define GUN_NO_SAFETY_MALFUNCTION_CHANCE_HIGH 100
 
 /////////////////
 // ATTACHMENTS //

code/modules/projectiles/gun.dm

@@ -992,6 +992,7 @@
 		human_holder = src
 	for(var/obj/item/gun/at_risk in get_all_contents())
 		var/chance_to_fire = GUN_NO_SAFETY_MALFUNCTION_CHANCE_MEDIUM
+		var/did_fire = FALSE
 		if(human_holder)
 			// gun is less likely to go off in a holster
 			if(at_risk == human_holder.s_store)