Makes damage precision explicit

code/__DEFINES/combat.dm

@@ -161,3 +161,6 @@
 #define BODY_ZONE_PRECISE_R_HAND	"r_hand"
 #define BODY_ZONE_PRECISE_L_FOOT	"l_foot"
 #define BODY_ZONE_PRECISE_R_FOOT	"r_foot"
+
+//We will round to this value in damage calculations.
+#define DAMAGE_PRECISION 0.1

code/game/objects/obj_defense.dm

@@ -8,7 +8,7 @@
 		play_attack_sound(damage_amount, damage_type, damage_flag)
 	if(!(resistance_flags & INDESTRUCTIBLE) && obj_integrity > 0)
 		damage_amount = run_obj_armor(damage_amount, damage_type, damage_flag, attack_dir, armour_penetration)
-		if(damage_amount >= 0.1)
+		if(damage_amount >= DAMAGE_PRECISION)
 			. = damage_amount
 			var/old_integ = obj_integrity
 			obj_integrity = max(old_integ - damage_amount, 0)
@@ -33,7 +33,7 @@
 		armor_protection = armor.getRating(damage_flag)
 	if(armor_protection)		//Only apply weak-against-armor/hollowpoint effects if there actually IS armor.
 		armor_protection = CLAMP(armor_protection - armour_penetration, 0, 100)
-	return round(damage_amount * (100 - armor_protection)*0.01, 0.1)
+	return round(damage_amount * (100 - armor_protection)*0.01, DAMAGE_PRECISION)
 
 //the sound played when the obj is damaged.
 /obj/proc/play_attack_sound(damage_amount, damage_type = BRUTE, damage_flag = 0)

code/modules/mob/living/brain/brain_item.dm

@@ -144,7 +144,7 @@
 /obj/item/organ/brain/proc/get_brain_damage()
 	var/brain_damage_threshold = max_integrity * BRAIN_DAMAGE_INTEGRITY_MULTIPLIER
 	var/offset_integrity = obj_integrity - (max_integrity - brain_damage_threshold)
-	. = round((1 - (offset_integrity / brain_damage_threshold)) * BRAIN_DAMAGE_DEATH,0.1)
+	. = round((1 - (offset_integrity / brain_damage_threshold)) * BRAIN_DAMAGE_DEATH, DAMAGE_PRECISION)
 
 /obj/item/organ/brain/proc/adjust_brain_damage(amount, maximum)
 	var/adjusted_amount
@@ -157,11 +157,11 @@
 	else
 		adjusted_amount = amount
 
-	adjusted_amount = round(adjusted_amount * BRAIN_DAMAGE_INTEGRITY_MULTIPLIER,0.1)
+	adjusted_amount = round(adjusted_amount * BRAIN_DAMAGE_INTEGRITY_MULTIPLIER, DAMAGE_PRECISION)
 	if(adjusted_amount)
-		if(adjusted_amount >= 0.1)
+		if(adjusted_amount >= DAMAGE_PRECISION)
 			take_damage(adjusted_amount)
-		else if(adjusted_amount <= -0.1)
+		else if(adjusted_amount <= -DAMAGE_PRECISION)
 			obj_integrity = min(max_integrity, obj_integrity-adjusted_amount)
 	. = adjusted_amount
 

code/modules/mob/living/carbon/damage_procs.dm

@@ -166,9 +166,15 @@
 
 		update |= picked.heal_damage(brute, burn, stamina, only_robotic, only_organic, FALSE)
 
-		brute = round(brute - (brute_was - picked.brute_dam), 0.01)
-		burn = round(burn - (burn_was - picked.burn_dam), 0.01)
-		stamina = round(stamina - (stamina_was - picked.stamina_dam), 0.01)
+<<<<<<< HEAD
+		brute -= (brute_was - picked.brute_dam)
+		burn -= (burn_was - picked.burn_dam)
+		stamina -= (stamina_was - picked.stamina_dam)
+=======
+		brute = round(brute - (brute_was - picked.brute_dam), DAMAGE_PRECISION)
+		burn = round(burn - (burn_was - picked.burn_dam), DAMAGE_PRECISION)
+		stamina = round(stamina - (stamina_was - picked.stamina_dam), DAMAGE_PRECISION)
+>>>>>>> 259dc6f386... Merge pull request #39139 from AnturK/iloveprecision
 
 		parts -= picked
 	if(updating_health)
@@ -186,9 +192,9 @@
 	var/update = 0
 	while(parts.len && (brute > 0 || burn > 0 || stamina > 0))
 		var/obj/item/bodypart/picked = pick(parts)
-		var/brute_per_part = round(brute/parts.len, 0.01)
-		var/burn_per_part = round(burn/parts.len, 0.01)
-		var/stamina_per_part = round(stamina/parts.len, 0.01)
+		var/brute_per_part = round(brute/parts.len, DAMAGE_PRECISION)
+		var/burn_per_part = round(burn/parts.len, DAMAGE_PRECISION)
+		var/stamina_per_part = round(stamina/parts.len, DAMAGE_PRECISION)
 
 		var/brute_was = picked.brute_dam
 		var/burn_was = picked.burn_dam
@@ -197,9 +203,15 @@
 
 		update |= picked.receive_damage(brute_per_part, burn_per_part, stamina_per_part, FALSE)
 
-		brute	= round(brute - (picked.brute_dam - brute_was), 0.01)
-		burn	= round(burn - (picked.burn_dam - burn_was), 0.01)
-		stamina = round(stamina - (picked.stamina_dam - stamina_was), 0.01)
+<<<<<<< HEAD
+		brute	-= (picked.brute_dam - brute_was)
+		burn	-= (picked.burn_dam - burn_was)
+		stamina -= (picked.stamina_dam - stamina_was)
+=======
+		brute	= round(brute - (picked.brute_dam - brute_was), DAMAGE_PRECISION)
+		burn	= round(burn - (picked.burn_dam - burn_was), DAMAGE_PRECISION)
+		stamina = round(stamina - (picked.stamina_dam - stamina_was), DAMAGE_PRECISION)
+>>>>>>> 259dc6f386... Merge pull request #39139 from AnturK/iloveprecision
 
 		parts -= picked
 	if(updating_health)

code/modules/mob/living/simple_animal/damage_procs.dm

@@ -2,7 +2,7 @@
 /mob/living/simple_animal/proc/adjustHealth(amount, updating_health = TRUE, forced = FALSE)
 	if(!forced && (status_flags & GODMODE))
 		return FALSE
-	bruteloss = CLAMP(bruteloss + amount, 0, maxHealth)
+	bruteloss = round(CLAMP(bruteloss + amount, 0, maxHealth),DAMAGE_PRECISION)
 	if(updating_health)
 		updatehealth()
 	return amount

code/modules/surgery/bodyparts/bodyparts.dm

@@ -121,9 +121,9 @@
 	if(owner && (owner.status_flags & GODMODE))
 		return FALSE	//godmode
 	var/dmg_mlt = CONFIG_GET(number/damage_multiplier)
-	brute = max(brute * dmg_mlt, 0)
-	burn = max(burn * dmg_mlt, 0)
-	stamina = max(stamina * dmg_mlt, 0)
+	brute = round(max(brute * dmg_mlt, 0),DAMAGE_PRECISION)
+	burn = round(max(burn * dmg_mlt, 0),DAMAGE_PRECISION)
+	stamina = round(max(stamina * dmg_mlt, 0),DAMAGE_PRECISION)
 	if(status == BODYPART_ROBOTIC) //This makes robolimbs not damageable by chems and makes it stronger
 		brute = max(0, brute - 5)
 		burn = max(0, burn - 4)
@@ -144,8 +144,8 @@
 
 	if(total_damage > can_inflict)
 		var/excess = total_damage - can_inflict
-		brute = brute * (excess / total_damage)
-		burn = burn * (excess / total_damage)
+		brute = round(brute * (excess / total_damage),DAMAGE_PRECISION)
+		burn = round(burn * (excess / total_damage),DAMAGE_PRECISION)
 
 	brute_dam += brute
 	burn_dam += burn
@@ -172,9 +172,9 @@
 	if(only_organic && status != BODYPART_ORGANIC) //This makes robolimbs not healable by chems.
 		return
 
-	brute_dam	= max(brute_dam - brute, 0)
-	burn_dam	= max(burn_dam - burn, 0)
-	stamina_dam = max(stamina_dam - stamina, 0)
+	brute_dam	= round(max(brute_dam - brute, 0), DAMAGE_PRECISION)
+	burn_dam	= round(max(burn_dam - burn, 0), DAMAGE_PRECISION)
+	stamina_dam = round(max(stamina_dam - stamina, 0), DAMAGE_PRECISION)
 	if(owner && updating_health)
 		owner.updatehealth()
 	return update_bodypart_damage_state()