tweaks to recoil and spread (shiptest-ss13#3094)

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## About The Pull Request

gunslingers work now, min recoil for ballistic, much cleaner and clearer
code
gunslingers and poor aim can SOMETIMES hit a clean shot

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thgvr edit: cleaned up changelog.
## Changelog

:cl:
balance: Ballistic weapons now have a minimum camera shake.
fix: Gunslinger now functions as intended.
/:cl:

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---------

Co-authored-by: retlaw34 <[email protected]>

code/modules/projectiles/gun.dm

@@ -316,6 +316,9 @@
 	///This prevents gun from firing until the coodown is done, affected by lag
 	var/current_cooldown = 0
 
+	var/gunslinger_recoil_bonus = 0
+	var/gunslinger_spread_bonus = 0
+
 /obj/item/gun/Initialize()
 	. = ..()
 	RegisterSignal(src, COMSIG_TWOHANDED_WIELD, PROC_REF(on_wield))
@@ -802,61 +805,42 @@
 /obj/item/gun/proc/before_firing(atom/target,mob/user)
 	return
 
-// We do it like this in case theres some specific gun behavior for adjusting recoil, like bipods or folded stocks
 /obj/item/gun/proc/calculate_recoil(mob/user, recoil_bonus = 0)
-	return recoil_bonus
+	if(HAS_TRAIT(user, TRAIT_GUNSLINGER))
+		recoil_bonus += gunslinger_recoil_bonus
+	return clamp(recoil_bonus, 0 , INFINITY)
 
-// We do it like this in case theres some specific gun behavior for adjusting spread, like bipods or folded stocks
 /obj/item/gun/proc/calculate_spread(mob/user, bonus_spread)
-	///our final spread value
-	var/sprd = 0
-	///our randomized value after checking if we are wielded or not
+	var/final_spread = 0
 	var/randomized_gun_spread = 0
-	///bonus
-	var/randomized_bonus_spread
-	// do we have poor aim
-	var/poor_aim = FALSE
+	var/randomized_bonus_spread = 0
 
-	//do we have bonus_spread ? If so, set sprd to it because it means a subtype's proc messed with it
-	sprd += bonus_spread
+	final_spread += bonus_spread
 
-	//reset bonus_spread for poor aim...
-	bonus_spread = 0
+	if(HAS_TRAIT(user, TRAIT_GUNSLINGER))
+		randomized_bonus_spread += rand(0, gunslinger_spread_bonus)
 
-	// if we have poor aim, we fuck the shooter over
 	if(HAS_TRAIT(user, TRAIT_POOR_AIM))
-		bonus_spread += 25
-		poor_aim = TRUE
-	// then we randomize the bonus spread
-	randomized_bonus_spread = rand(poor_aim ? 10 : 0, bonus_spread) //poor aim is no longer just a nusiance
-
-	//then, we mutiply previous bonus spread as it means dual wielding usually, it also means poor aim is also even more severe
-	randomized_bonus_spread *= DUALWIELD_PENALTY_EXTRA_MULTIPLIER
+		randomized_bonus_spread += rand(0, 25)
 
-	// we will then calculate gun spread depending on if we are fully wielding (after do_after) the gun or not
+	//We will then calculate gun spread depending on if we are fully wielding (after do_after) the gun or not
 	randomized_gun_spread =	rand(0, wielded_fully ? spread : spread_unwielded)
 
-	//finally, we put it all together including if sprd has a value
-	sprd += randomized_gun_spread + randomized_bonus_spread
-
-	//clamp it down to avoid guns with negative spread to have worse recoil...
-	sprd = clamp(sprd, 0, INFINITY)
+	final_spread += randomized_gun_spread + randomized_bonus_spread
 
-	// im not sure what this does, i beleive its meant to make it so  bullet spread goes in the opposite direction? get back to me on this - update,i have commented it out, however it appears be dapening spread. weird.
-	//sprd *= (rand() - 0.5)
+	//Clamp it down to avoid guns with negative spread to have worse recoil...
+	final_spread = clamp(final_spread, 0, INFINITY)
 
-	//coin flip if we mutiply output by -1 so spread isn't JUST to the right
+	//So spread isn't JUST to the right
 	if(prob(50))
-		sprd *= -1
+		final_spread *= -1
 
-	// then we round it up and send it!
-	sprd = round(sprd)
+	final_spread = round(final_spread)
 
-	return sprd
+	return final_spread
 
 /obj/item/gun/proc/simulate_recoil(mob/living/user, recoil_bonus = 0, firing_angle)
 	var/total_recoil = calculate_recoil(user, recoil_bonus)
-	total_recoil = clamp(total_recoil, 0 , INFINITY)
 
 	var/actual_angle = firing_angle + rand(-recoil_deviation, recoil_deviation) + 180
 	if(actual_angle > 360)

code/modules/projectiles/guns/ballistic/assault.dm

@@ -14,23 +14,8 @@
 	rack_sound = 'sound/weapons/gun/rifle/ar_cock.ogg'
 	spread_unwielded = 20
 
-/obj/item/gun/ballistic/automatic/assault/calculate_recoil(mob/user, recoil_bonus = 0)
-	var/gunslinger_bonus = 2
-	var/total_recoil = recoil_bonus
-
-	if(HAS_TRAIT(user, TRAIT_GUNSLINGER)) //gunslinger penalty
-		total_recoil += gunslinger_bonus
-
-	return ..(user, total_recoil)
-
-/obj/item/gun/ballistic/automatic/assault/calculate_spread(mob/user, bonus_spread)
-	var/gunslinger_bonus = 16
-	var/total_spread = bonus_spread
-
-	if(HAS_TRAIT(user, TRAIT_GUNSLINGER)) //gunslinger penalty
-		total_spread += gunslinger_bonus
-
-	return ..(user, total_spread)
+	gunslinger_recoil_bonus = 2
+	gunslinger_spread_bonus = 16
 
 /obj/item/gun/ballistic/automatic/assault/skm
 	name = "\improper SKM-24"

code/modules/projectiles/guns/ballistic/hmg.dm

@@ -18,6 +18,9 @@
 	recoil_unwielded = 4
 	wield_slowdown = 3
 
+	gunslinger_recoil_bonus = 2
+	gunslinger_spread_bonus = 20
+
 	///does this have a bipod?
 	var/has_bipod = FALSE
 	///is the bipod deployed?
@@ -116,29 +119,6 @@
 	. = ..()
 	retract_bipod(user=user)
 
-/obj/item/gun/ballistic/automatic/hmg/calculate_recoil(mob/user, recoil_bonus = 0)
-	var/gunslinger_bonus = 2
-	var/total_recoil = recoil_bonus
-
-	if(bipod_deployed)
-		total_recoil += deploy_recoil_bonus
-	if(HAS_TRAIT(user, TRAIT_GUNSLINGER)) //gunslinger penalty
-		total_recoil += gunslinger_bonus
-
-	return ..(user, total_recoil)
-
-/obj/item/gun/ballistic/automatic/hmg/calculate_spread(mob/user, bonus_spread)
-	var/gunslinger_bonus = 20
-	var/total_spread = bonus_spread
-
-	if(bipod_deployed)
-		total_spread += deploy_spread_bonus
-	if(HAS_TRAIT(user, TRAIT_GUNSLINGER)) //gunslinger penalty
-		total_spread += gunslinger_bonus
-
-	return ..(user, total_spread)
-
-
 /obj/item/gun/ballistic/automatic/hmg/update_icon_state()
 	. = ..()
 	item_state = "[initial(item_state)][bipod_deployed ? "_deployed" : ""]"

code/modules/projectiles/guns/ballistic/revolver.dm

@@ -40,6 +40,9 @@
 
 	safety_wording = "hammer"
 
+	gunslinger_recoil_bonus = -1
+	gunslinger_spread_bonus = -8
+
 	var/gate_loaded = FALSE //for stupid wild west shit
 	var/gate_offset = 5 //for wild west shit 2: instead of ejecting the chambered round, eject the next round if 1
 	var/gate_load_direction = REVOLVER_AUTO_ROTATE_RIGHT_LOADING //when we load ammo with a box, which direction do we rotate the cylinder? unused with normal revolvers
@@ -418,7 +421,7 @@
 	fire_delay = src::fire_delay
 	if(fan)
 		rack()
-		to_chat(user, "<span class='notice'>You fan the [bolt_wording] of \the [src]!</span>")
+		to_chat(user, span_notice("You fan the [bolt_wording] of \the [src]!"))
 		balloon_alert_to_viewers("fans revolver!")
 		fire_delay = 0 SECONDS
 
@@ -436,25 +439,6 @@
 		return
 	to_chat(user, "<span class='danger'>The hammer is up on [src]! Pull it down to fire!</span>")
 
-/obj/item/gun/ballistic/revolver/calculate_recoil(mob/user, recoil_bonus = 0)
-	var/gunslinger_bonus = -1
-	var/total_recoil = recoil_bonus
-
-	if(HAS_TRAIT(user, TRAIT_GUNSLINGER)) //gunslinger bonus
-		total_recoil += gunslinger_bonus
-		total_recoil = clamp(total_recoil,0,INFINITY)
-
-	return ..(user, total_recoil)
-
-/obj/item/gun/ballistic/revolver/calculate_spread(mob/user, bonus_spread)
-	var/gunslinger_bonus = -8
-	var/total_spread = bonus_spread
-
-	if(HAS_TRAIT(user, TRAIT_GUNSLINGER)) //gunslinger bonus
-		total_spread += gunslinger_bonus
-
-	return ..(user, total_spread)
-
 /obj/item/gun/ballistic/revolver/pickup(mob/user)
 	. = ..()
 	tryflip(user)

code/modules/projectiles/guns/ballistic/shotgun.dm

@@ -35,6 +35,8 @@
 	recoil = 1
 	recoil_unwielded = 4
 
+	gunslinger_recoil_bonus = -1
+
 /obj/item/gun/ballistic/shotgun/blow_up(mob/user)
 	if(chambered && chambered.BB)
 		process_fire(user, user, FALSE)
@@ -46,15 +48,6 @@
 			return TRUE
 	return FALSE
 
-/obj/item/gun/ballistic/shotgun/calculate_recoil(mob/user, recoil_bonus = 0)
-	var/gunslinger_bonus = -1
-	var/total_recoil = recoil_bonus
-	if(HAS_TRAIT(user, TRAIT_GUNSLINGER)) //gunslinger bonus
-		total_recoil += gunslinger_bonus
-		total_recoil = clamp(total_recoil,0,INFINITY)
-
-	return ..(user, total_recoil)
-
 // BRIMSTONE SHOTGUN //
 
 /obj/item/gun/ballistic/shotgun/brimstone

code/modules/projectiles/guns/ballistic/smg.dm

@@ -19,25 +19,8 @@
 	eject_sound = 'sound/weapons/gun/smg/smg_unload.ogg'
 	eject_empty_sound = 'sound/weapons/gun/smg/smg_unload.ogg'
 
-/obj/item/gun/ballistic/automatic/smg/calculate_recoil(mob/user, recoil_bonus = 0)
-	var/gunslinger_bonus = 2
-	var/total_recoil
-	if(.)
-		total_recoil += .
-	if(HAS_TRAIT(user, TRAIT_GUNSLINGER)) //gunslinger penalty
-		total_recoil += gunslinger_bonus
-	. = total_recoil
-	return ..()
-
-/obj/item/gun/ballistic/automatic/smg/calculate_spread(mob/user, bonus_spread)
-	var/gunslinger_bonus = 16
-	var/total_spread = bonus_spread
-	if(.)
-		total_spread += .
-	if(HAS_TRAIT(user, TRAIT_GUNSLINGER)) //gunslinger penalty
-		total_spread += gunslinger_bonus
-	. = total_spread
-	return ..()
+	gunslinger_recoil_bonus = 2
+	gunslinger_spread_bonus = 16
 
 /obj/item/gun/ballistic/automatic/smg/c20r
 	name = "\improper C-20r SMG"