fix that annoying af particle runtime (#3483)

I know that borbop's current PR also fixes this, but I'm tired of seeing it in CI too

code/modules/mob/living/blood.dm

@@ -421,7 +421,7 @@
  * Helper proc for throwing blood particles around, similar to the spray_blood proc.
  */
 /mob/living/proc/blood_particles(amount = rand(1, 3), angle = rand(0,360), min_deviation = -30, max_deviation = 30, min_pixel_z = 0, max_pixel_z = 6)
-	if(!isturf(loc) || !blood_volume ||HAS_TRAIT(src, TRAIT_NOBLOOD))
+	if(QDELETED(src) || QDELETED(loc) || !isturf(loc) || !blood_volume || HAS_TRAIT(src, TRAIT_NOBLOOD))
 		return
 	for(var/i in 1 to amount)
 		var/obj/effect/decal/cleanable/blood/particle/droplet = new(loc)

monkestation/code/modules/blood_for_the_blood_gods/particle.dm

@@ -19,14 +19,13 @@
 	return FALSE
 
 /obj/effect/decal/cleanable/blood/particle/proc/start_movement(movement_angle)
-	var/datum/component/movable_physics/movable_physics = GetComponent(/datum/component/movable_physics)
-	if(!movable_physics)
-		movable_physics = initialize_physics()
-	if(!isnull(movement_angle))
-		movable_physics.set_angle(movement_angle)
+	get_or_init_physics()?.set_angle(movement_angle)
 
-/obj/effect/decal/cleanable/blood/particle/proc/initialize_physics()
-	return AddComponent(/datum/component/movable_physics, \
+/obj/effect/decal/cleanable/blood/particle/proc/get_or_init_physics() as /datum/component/movable_physics
+	RETURN_TYPE(/datum/component/movable_physics)
+	if(QDELETED(src))
+		return
+	return LoadComponent(/datum/component/movable_physics, \
 		horizontal_velocity = rand(3 * 100, 5.5 * 100) * 0.01, \
 		vertical_velocity = rand(4 * 100, 4.5 * 100) * 0.01, \
 		horizontal_friction = rand(0.05 * 100, 0.1 * 100) * 0.01, \
@@ -38,7 +37,9 @@
 	)
 
 /obj/effect/decal/cleanable/blood/particle/proc/on_bounce()
-	if(!isturf(loc) || !splatter_type_floor)
+	if(QDELETED(src))
+		return
+	if(QDELETED(loc) || !isturf(loc) || !splatter_type_floor)
 		qdel(src)
 		return
 	var/obj/effect/decal/cleanable/splatter
@@ -73,7 +74,7 @@
 	qdel(src)
 
 /obj/effect/decal/cleanable/blood/particle/proc/on_bump(atom/bumped_atom)
-	if(!isturf(loc) || !splatter_type_wall)
+	if(QDELETED(src) || QDELETED(bumped_atom) || !isturf(loc) || !splatter_type_wall)
 		return
 	if(iswallturf(bumped_atom))
 		//Adjust pixel offset to make splatters appear on the wall
@@ -119,8 +120,8 @@
 	update_appearance(UPDATE_ICON)
 
 /obj/effect/decal/cleanable/blood/splatter/stacking/Destroy()
-	. = ..()
 	splat_overlays = null
+	return ..()
 
 /obj/effect/decal/cleanable/blood/splatter/stacking/update_overlays()
 	. = ..()

monkestation/code/modules/physics/physics_component.dm

@@ -266,7 +266,8 @@
 
 /// Helper to set angle, futureproofing in case new behavior like altering the transform of the movable based on angle is needed
 /datum/component/movable_physics/proc/set_angle(new_angle)
-	angle = SIMPLIFY_DEGREES(new_angle)
+	if(!isnull(new_angle))
+		angle = SIMPLIFY_DEGREES(new_angle)
 
 /// We do not EVER want newtonian movement while handling movement ourselves, so block it!
 /datum/component/movable_physics/proc/on_newtonian_move(atom/movable/source, direction, start_delay)