Port emitter sprites

code/modules/power/singularity/emitter_vr.dm

@@ -0,0 +1,37 @@
+/obj/machinery/power/emitter
+    icon = 'icons/obj/singularity_vr.dmi' // New emitter sprite
+    var/previous_state = 0
+
+/obj/machinery/power/emitter/Initialize()
+    . = ..()
+    previous_state = state
+
+/obj/machinery/power/emitter/update_icon()
+	cut_overlays()
+	icon_state = "emitter[state]"
+	if (state != previous_state)
+		flick("emitterflick-[previous_state][state]",src)
+		previous_state = state
+
+	if(powered && powernet && avail(active_power_usage) && active)
+		var/image/emitterbeam = image(icon,"emitter-beam")
+		emitterbeam.plane = PLANE_LIGHTING_ABOVE
+		add_overlay(emitterbeam)
+
+	if(locked)
+		var/image/emitterlock = image(icon,"emitter-lock")
+		emitterlock.plane = PLANE_LIGHTING_ABOVE
+		add_overlay(emitterlock)
+
+// The old emitter sprite
+/obj/machinery/power/emitter/antique
+	name = "antique emitter"
+	desc = "An old fashioned heavy duty industrial laser."
+	icon_state = "emitter"
+
+/obj/machinery/power/emitter/antique/update_icon()
+	if(powered && powernet && avail(active_power_usage) && active)
+		icon_state = "emitter_+a"
+	else
+		icon_state = "emitter"
+