Twitch

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

@@ -310,6 +310,7 @@ This function restores all organs.
 				damage = damage*species.brute_mod
 			if(organ.take_damage(damage, 0, sharp, edge, used_weapon))
 				UpdateDamageIcon()
+			receive_damage()
 		if(BURN)
 			damageoverlaytemp = 20
 			if(species && species.burn_mod)

code/modules/mob/living/living.dm

@@ -808,6 +808,17 @@
 	..()
 	floating = 0 // If we were without gravity, the bouncing animation got stopped, so we make sure we restart the bouncing after the next movement.
 
+
+/atom/movable/proc/receive_damage(atom/A)
+	var/pixel_x_diff = rand(-3,3)
+	var/pixel_y_diff = rand(-3,3)
+	animate(src, pixel_x = pixel_x + pixel_x_diff, pixel_y = pixel_y + pixel_y_diff, time = 2)
+	animate(pixel_x = initial(pixel_x), pixel_y = initial(pixel_y), time = 2)
+
+/mob/living/receive_damage(atom/A)
+	..()
+	floating = 0 // If we were without gravity, the bouncing animation got stopped, so we make sure we restart the bouncing after the next movement.
+
 /mob/living/proc/do_jitter_animation(jitteriness)
 	var/amplitude = min(4, (jitteriness/100) + 1)
 	var/pixel_x_diff = rand(-amplitude, amplitude)