Medical HUD useability improvements (#413)

- bugfix: "Medical huds will now properly update as wounds heal
passively, or when bandaged"
- rscadd: "Added a new Medical HUD state between 70 and 100%, to better
recognise very small amounts of damage"
- rscadd: "Medical huds will no longer show the healthbar on crewmembers
who are at full health"
- rscadd: "Added a healthbar fadeout effect for when someone heals up to
100% while you're watching"
- tweak: "Medical huds now update more frequently"

code/__HELPERS/mobs.dm

@@ -90,7 +90,9 @@ proc/RoundHealth(health)
 	switch(health)
 		if(100 to INFINITY)
 			return "health100"
-		if(70 to 100)
+		if(90 to 100)
+			return "health95"
+		if(70 to 90)
 			return "health80"
 		if(50 to 70)
 			return "health60"

code/modules/mob/living/carbon/human/life.dm

@@ -55,12 +55,13 @@
 	//TODO: seperate this out
 	// update the current life tick, can be used to e.g. only do something every 4 ticks
 	life_tick++
+
 	var/datum/gas_mixture/environment = loc.return_air()
 
 	in_stasis = istype(loc, /obj/structure/closet/body_bag/cryobag) && loc:opened == 0
 	if(in_stasis) loc:used++
 
-	if(life_tick%30==15)
+	if(life_tick%30==5)//Makes huds update every 10 seconds instead of every 30 seconds
 		hud_updateflag = 1022
 
 	voice = GetVoice()
@@ -1613,7 +1614,15 @@
 			holder.icon_state = "hudhealth-100" 	// X_X
 		else
 			var/percentage_health = RoundHealth((health-config.health_threshold_crit)/(maxHealth-config.health_threshold_crit)*100)
-			holder.icon_state = "hud[percentage_health]"
+
+			if (percentage_health == "health100" && holder.icon_state && holder.icon_state != "hudhealth100" && holder.icon_state != "hudhealth100a")
+				holder.icon_state = "hudhealth100a"
+				spawn(30)//just to prevent any issues with the animation, we'll set it to the normal state after 3 seconds
+					percentage_health = RoundHealth((health-config.health_threshold_crit)/(maxHealth-config.health_threshold_crit)*100)
+					if (percentage_health == "health100")
+						holder.icon_state = "hudhealth100"
+			else
+				holder.icon_state = "hud[percentage_health]"
 		hud_list[HEALTH_HUD] = holder
 
 	if (BITTEST(hud_updateflag, LIFE_HUD))

code/modules/organs/organ_external.dm

@@ -559,7 +559,7 @@ Note that amputating the affected organ does in fact remove the infection from t
 
 	if((status & ORGAN_ROBOT) || (status & ORGAN_ADV_ROBOT)) //Robotic limbs don't heal or get worse.
 		return
-
+	var/updatehud
 	for(var/datum/wound/W in wounds)
 		// wounds can disappear after 10 minutes at the earliest
 		if(W.damage <= 0 && W.created + 10 * 10 * 60 <= world.time)
@@ -567,6 +567,9 @@ Note that amputating the affected organ does in fact remove the infection from t
 			continue
 			// let the GC handle the deletion of the wound
 
+		if (W.damage > 0)
+			updatehud = 1//If there are any wounds with damage to heal, then we'll update health huds
+
 		// Internal wounds get worse over time. Low temperatures (cryo) stop them.
 		if(W.internal && owner.bodytemperature >= 170)
 			var/bicardose = owner.reagents.get_reagent_amount("bicaridine")
@@ -604,6 +607,9 @@ Note that amputating the affected organ does in fact remove the infection from t
 
 	// sync the organ's damage with its wounds
 	src.update_damages()
+	if (updatehud)
+		owner.hud_updateflag = 1022
+
 	if (update_icon())
 		owner.UpdateDamageIcon(1)