part 2

code/modules/projectiles/projectile.dm

@@ -56,9 +56,25 @@
 	var/nondirectional_sprite = FALSE //Set TRUE to prevent projectiles from having their sprites rotated based on firing angle
 	var/spread = 0			//amount (in degrees) of projectile spread
 	animate_movement = 0	//Use SLIDE_STEPS in conjunction with legacy
+	/// how many times we've ricochet'd so far (instance variable, not a stat)
 	var/ricochets = 0
-	var/ricochets_max = 2
-	var/ricochet_chance = 30
+	/// how many times we can ricochet max
+	var/ricochets_max = 0
+	/// 0-100, the base chance of ricocheting, before being modified by the atom we shoot and our chance decay
+	var/ricochet_chance = 0
+	/// 0-1 (or more, I guess) multiplier, the ricochet_chance is modified by multiplying this after each ricochet
+	var/ricochet_decay_chance = 0.7
+	/// 0-1 (or more, I guess) multiplier, the projectile's damage is modified by multiplying this after each ricochet
+	var/ricochet_decay_damage = 0.7
+	/// On ricochet, if nonzero, we consider all mobs within this range of our projectile at the time of ricochet to home in on like Revolver Ocelot, as governed by ricochet_auto_aim_angle
+	var/ricochet_auto_aim_range = 0
+	/// On ricochet, if ricochet_auto_aim_range is nonzero, we'll consider any mobs within this range of the normal angle of incidence to home in on, higher = more auto aim
+	var/ricochet_auto_aim_angle = 30
+	/// the angle of impact must be within this many degrees of the struck surface, set to 0 to allow any angle
+	var/ricochet_incidence_leeway = 40
+
+	///If the object being hit can pass ths damage on to something else, it should not do it for this bullet
+	var/force_hit = FALSE
 
 	//Hitscan
 	var/hitscan = FALSE		//Whether this is hitscan. If it is, speed is basically ignored.
@@ -131,6 +147,11 @@
 
 	var/temporary_unstoppable_movement = FALSE
 
+	///If defined, on hit we create an item of this type then call hitby() on the hit target with this
+	var/shrapnel_type
+	///If TRUE, hit mobs even if they're on the floor and not our target
+	var/hit_stunned_targets = FALSE
+
 /obj/item/projectile/Initialize()
 	. = ..()
 	permutated = list()
@@ -146,6 +167,7 @@
 		on_range()
 
 /obj/item/projectile/proc/on_range() //if we want there to be effects when they reach the end of their range
+	SEND_SIGNAL(src, COMSIG_PROJECTILE_RANGE_OUT)
 	qdel(src)
 
 //to get the correct limb (if any) for the projectile hit message
@@ -165,6 +187,10 @@
 /obj/item/projectile/proc/on_hit(atom/target, blocked = FALSE)
 	if(fired_from)
 		SEND_SIGNAL(fired_from, COMSIG_PROJECTILE_ON_HIT, firer, target, Angle)
+
+	// i know that this is probably more with wands and gun mods in mind, but it's a bit silly that the projectile on_hit signal doesn't ping the projectile itself.
+	// maybe we care what the projectile thinks! See about combining these via args some time when it's not 5AM
+	SEND_SIGNAL(src, COMSIG_PROJECTILE_SELF_ON_HIT, firer, target, Angle)
 	var/turf/target_loca = get_turf(target)
 
 	var/hitx
@@ -219,7 +245,10 @@
 		var/limb_hit = L.check_limb_hit(def_zone)//to get the correct message info.
 		if(limb_hit)
 			organ_hit_text = " in \the [parse_zone(limb_hit)]"
-		if(suppressed)
+
+		if(suppressed==SUPPRESSED_VERY)
+			playsound(loc, hitsound, 5, TRUE, -1)
+		else if(suppressed)
 			playsound(loc, hitsound, 5, 1, -1)
 			to_chat(L, "<span class='userdanger'>You're shot by \a [src][organ_hit_text]!</span>")
 		else
@@ -250,7 +279,23 @@
 		return 50 //if the projectile doesn't do damage, play its hitsound at 50% volume
 
 /obj/item/projectile/proc/on_ricochet(atom/A)
-	return
+	if(!ricochet_auto_aim_angle || !ricochet_auto_aim_range)
+		return
+
+	var/mob/living/unlucky_sob
+	var/best_angle = ricochet_auto_aim_angle
+	if(firer && HAS_TRAIT(firer, TRAIT_NICE_SHOT))
+		best_angle += NICE_SHOT_RICOCHET_BONUS
+	for(var/mob/living/L in range(ricochet_auto_aim_range, src.loc))
+		if(L.stat == DEAD || !isInSight(src, L))
+			continue
+		var/our_angle = abs(closer_angle_difference(Angle, Get_Angle(src.loc, L.loc)))
+		if(our_angle < best_angle)
+			best_angle = our_angle
+			unlucky_sob = L
+
+	if(unlucky_sob)
+		setAngle(Get_Angle(src, unlucky_sob.loc))
 
 /obj/item/projectile/proc/store_hitscan_collision(datum/point/pcache)
 	beam_segments[beam_index] = pcache
@@ -259,13 +304,15 @@
 
 /obj/item/projectile/Bump(atom/A)
 	var/turf/T = get_turf(A)
-	if(trajectory && check_ricochet(A) && check_ricochet_flag(A) && ricochets < ricochets_max)
+	if(trajectory && ricochets < ricochets_max && check_ricochet_flag(A) && check_ricochet(A))
 		var/datum/point/pcache = trajectory.copy_to()
 		ricochets++
 		if(A.handle_ricochet(src))
 			on_ricochet(A)
 			ignore_source_check = TRUE
 			decayedRange = max(0, decayedRange - reflect_range_decrease)
+			ricochet_chance *= ricochet_decay_chance
+			damage *= ricochet_decay_damage
 			range = decayedRange
 			if(hitscan)
 				store_hitscan_collision(pcache)
@@ -344,13 +391,18 @@
 		return T
 	//Returns null if nothing at all was found.
 
-/obj/item/projectile/proc/check_ricochet()
-	if(prob(ricochet_chance))
+/obj/projectile/proc/check_ricochet(atom/A)
+	var/chance = ricochet_chance * A.ricochet_chance_mod
+	if(firer && HAS_TRAIT(firer, TRAIT_NICE_SHOT))
+		chance += NICE_SHOT_RICOCHET_BONUS
+	if(prob(chance))
 		return TRUE
 	return FALSE
 
 /obj/item/projectile/proc/check_ricochet_flag(atom/A)
-	if(A.flags_1 & CHECK_RICOCHET_1)
+	if((flag in list("energy", "laser")) && (A.flags_ricochet & RICOCHET_SHINY))
+		return TRUE
+	if((flag in list("bomb", "bullet")) && (A.flags_ricochet & RICOCHET_HARD))
 		return TRUE
 	return FALSE
 
@@ -391,6 +443,8 @@
 /obj/item/projectile/proc/fire(angle, atom/direct_target)
 	if(fired_from)
 		SEND_SIGNAL(fired_from, COMSIG_PROJECTILE_BEFORE_FIRE, src, original)	//If no angle needs to resolve it from xo/yo!
+	if(shrapnel_type)
+		AddElement(/datum/element/embed, projectile_payload = shrapnel_type)
 	if(!log_override && firer && original)
 		log_combat(firer, original, "fired at", src, "from [get_area_name(src, TRUE)]")
 	if(direct_target)