Fixes some potential issues with life(). Ever since we added instantaneous damage calculation a mob can die mid life() (and even be deleted for animals that delete on death, and potential gibbing). This means we need to check if stat is still not DEAD after calling every handle_X proc and before calling the next handle_Y proc that assumes the mob is not dead. (example: human is alive, handle_A() is called and ends up gibbing the human, which qdels it and makes its dna var null; then the life.dm() proc continues and calls handle_B() and assumes the human is still alive, that proc needs to call dna.something and BAM! Runtime!)

Also fixes targets_from var of hostile animal not being cleared when mob is deleted.

Finally, the automatic forced mob unbuckling when the mob is gibbed is moved to living/Destroy() so that it covers all possible deletions.

code/modules/mob/living/carbon/alien/larva/life.dm

@@ -6,7 +6,7 @@
 
 	if (notransform)
 		return
-	if(..())
+	if(..()) //not dead
 		// GROW!
 		if(amount_grown < max_grown)
 			amount_grown++

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

@@ -29,20 +29,26 @@
 	if (notransform)
 		return
 
-	if(..())
+	if(..()) //not dead
 		for(var/datum/mutation/human/HM in dna.mutations)
 			HM.on_life(src)
 
+	if(stat != DEAD)
 		//heart attack stuff
 		handle_heart()
 
+	if(stat != DEAD)
 		//Stuff jammed in your limbs hurts
 		handle_embedded_objects()
+
 	//Update our name based on whether our face is obscured/disfigured
 	name = get_visible_name()
 
 	dna.species.spec_life(src) // for mutantraces
 
+	if(stat != DEAD)
+		return 1
+
 
 /mob/living/carbon/human/calculate_affecting_pressure(pressure)
 	if((wear_suit && (wear_suit.flags & STOPSPRESSUREDMAGE)) && (head && (head.flags & STOPSPRESSUREDMAGE)))

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

@@ -9,11 +9,10 @@
 		damageoverlaytemp = 0
 		update_damage_hud()
 
-	if(..())
-		. = 1
-
+	if(..()) //not dead
 		handle_blood()
 
+	if(stat != DEAD)
 		for(var/X in internal_organs)
 			var/obj/item/organ/O = X
 			O.on_life()
@@ -21,6 +20,9 @@
 	//Updates the number of stored chemicals for powers
 	handle_changeling()
 
+	if(stat != DEAD)
+		return 1
+
 ///////////////
 // BREATHING //
 ///////////////

code/modules/mob/living/death.dm

@@ -3,13 +3,9 @@
 	if(stat != DEAD)
 		death(1)
 
-	if(buckled)
-		buckled.unbuckle_mob(src,force=1) //to update alien nest overlay, forced because we don't exist anymore
-
 	if(!prev_lying)
 		gib_animation()
 
-
 	spill_organs(no_brain, no_organs, no_bodyparts)
 
 	if(!no_bodyparts)
@@ -64,8 +60,6 @@
 	living_mob_list -= src
 	if(!gibbed)
 		dead_mob_list += src
-	else if(buckled)
-		buckled.unbuckle_mob(src,force=1)
 	paralysis = 0
 	stunned = 0
 	weakened = 0

code/modules/mob/living/life.dm

@@ -19,21 +19,18 @@
 	var/datum/gas_mixture/environment = loc.return_air()
 
 	if(stat != DEAD)
-
 		//Breathing, if applicable
 		handle_breathing()
-
+	if(stat != DEAD)
 		//Mutations and radiation
 		handle_mutations_and_radiation()
-
+	if(stat != DEAD)
 		//Chemicals in the body
 		handle_chemicals_in_body()
-
+	if(stat != DEAD)
 		//Random events (vomiting etc)
 		handle_random_events()
 
-		. = 1
-
 	//Handle temperature/pressure differences between body and environment
 	if(environment)
 		handle_environment(environment)
@@ -48,11 +45,14 @@
 	if(machine)
 		machine.check_eye(src)
 
-
 	if(stat != DEAD)
 		handle_disabilities() // eye, ear, brain damages
+	if(stat != DEAD)
 		handle_status_effects() //all special effects, stunned, weakened, jitteryness, hallucination, sleeping, etc
 
+	if(stat != DEAD)
+		return 1
+
 
 /mob/living/proc/handle_breathing()
 	return

code/modules/mob/living/living.dm

@@ -29,6 +29,9 @@
 /mob/living/Destroy()
 	..()
 
+	if(buckled)
+		buckled.unbuckle_mob(src,force=1)
+
 	for(var/mob/living/simple_animal/drone/D in player_list)
 		for(var/image/I in staticOverlays)
 			D.staticOverlays.Remove(I)

code/modules/mob/living/silicon/ai/life.dm

@@ -4,7 +4,7 @@
 #define POWER_RESTORATION_APC_FOUND 3
 
 /mob/living/silicon/ai/Life()
-	if (src.stat == DEAD)
+	if (stat == DEAD)
 		return
 	else //I'm not removing that shitton of tabs, unneeded as they are. -- Urist
 		//Being dead doesn't mean your temperature never changes

code/modules/mob/living/silicon/pai/life.dm

@@ -1,7 +1,7 @@
 /mob/living/silicon/pai/Life()
-	if (src.stat == DEAD)
+	if(stat == DEAD)
 		return
-	if(src.cable)
+	if(cable)
 		if(get_dist(src, src.cable) > 1)
 			var/turf/T = get_turf(src.loc)
 			T.visible_message("<span class='warning'>[src.cable] rapidly retracts back into its spool.</span>", "<span class='italics'>You hear a click and the sound of wire spooling rapidly.</span>")

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

@@ -53,6 +53,10 @@
 	environment_target_typecache = typecacheof(environment_target_typecache)
 
 
+/mob/living/simple_animal/hostile/Destroy()
+	targets_from = null
+	return ..()
+
 /mob/living/simple_animal/hostile/Life()
 	. = ..()
 	if(!.) //dead
@@ -225,7 +229,7 @@
 		else
 			Goto(target,move_to_delay,minimum_distance)
 		if(target)
-			if(isturf(targets_from.loc) && target.Adjacent(targets_from)) //If they're next to us, attack
+			if(targets_from && isturf(targets_from.loc) && target.Adjacent(targets_from)) //If they're next to us, attack
 				AttackingTarget()
 			return 1
 		return 0

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

@@ -104,10 +104,14 @@
 /mob/living/simple_animal/Life()
 	if(..()) //alive
 		if(!ckey)
-			handle_automated_movement()
-			handle_automated_action()
-			handle_automated_speech()
-		return 1
+			if(stat != DEAD)
+				handle_automated_movement()
+			if(stat != DEAD)
+				handle_automated_action()
+			if(stat != DEAD)
+				handle_automated_speech()
+		if(stat != DEAD)
+			return 1
 
 /mob/living/simple_animal/updatehealth()
 	..()
@@ -302,6 +306,7 @@
 		ghostize()
 		stat = DEAD
 		qdel(src)
+		return
 	else
 		health = 0
 		icon_state = icon_dead