POLARIS: Adds an animation thing, uses it on ventcrawls

code/modules/mob/animations.dm

@@ -144,6 +144,42 @@ note dizziness decrements automatically in the mob's Life() proc.
 	//reset the pixel offsets to zero
 	is_floating = 0
 
+/atom/movable/proc/fade_towards(atom/A,var/time = 2)
+	set waitfor = FALSE
+
+	var/pixel_x_diff = 0
+	var/pixel_y_diff = 0
+	var/pixel_z_diff = 0
+	var/direction = get_dir(src, A)
+	if(direction & NORTH)
+		pixel_y_diff = 32
+	else if(direction & SOUTH)
+		pixel_y_diff = -32
+
+	if(direction & EAST)
+		pixel_x_diff = 32
+	else if(direction & WEST)
+		pixel_x_diff = -32
+
+	if(!direction) // On top of?
+		pixel_z_diff = -8
+
+	var/default_pixel_x = initial(pixel_x)
+	var/default_pixel_y = initial(pixel_y)
+	var/default_pixel_z = initial(pixel_z)
+	var/initial_alpha = alpha
+	var/mob/mob = src
+	if(istype(mob))
+		default_pixel_x = mob.default_pixel_x
+		default_pixel_y = mob.default_pixel_y
+
+	animate(src, alpha = 0, pixel_x = pixel_x + pixel_x_diff, pixel_y = pixel_y + pixel_y_diff, pixel_z = pixel_z + pixel_z_diff, time = time)
+	sleep(time+1) //So you can wait on this proc to finish if you want to time your next steps
+	pixel_x = default_pixel_x
+	pixel_y = default_pixel_y
+	pixel_z = default_pixel_z
+	alpha = initial_alpha
+
 /atom/movable/proc/do_attack_animation(atom/A)
 
 	var/pixel_x_diff = 0

code/modules/ventcrawl/ventcrawl.dm

@@ -154,6 +154,7 @@ var/list/ventcrawl_machinery = list(
 					if(HAZARD_HIGH_PRESSURE to INFINITY)
 						to_chat(src, "<span class='danger'>You feel a roaring wind pushing you away from the vent!</span>")
 
+			fade_towards(vent_found,45)
 			if(!do_after(src, 45, vent_found, 1, 1))
 				return
 			if(!can_ventcrawl())