Emissive APCs (#7000)

# About the pull request
Adds emissive lights to APCs, Hopefully this PR shows people how easy it
is to add emissives so we can make the game prettier

![image](https://github.com/user-attachments/assets/e0f3c9ad-1a1e-47be-9fd9-e26851dfa34a)

![image](https://github.com/user-attachments/assets/8707353b-beab-4a1b-98d2-4fa956bd84c3)

![image](https://github.com/user-attachments/assets/3a7f65f2-aed0-42aa-8b7a-ffa9bd14f6b1)
Takes inspiration from
tgstation/TerraGov-Marine-Corps#14257 and
tgstation/TerraGov-Marine-Corps#6739 and
#5405
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# Explain why it's good for the game
Makes it prettier
# Testing Photographs and Procedure
<details>
<summary>Screenshots & Videos</summary>

Put screenshots and videos here with an empty line between the
screenshots and the `<details>` tags.

</details>


# Changelog
:cl:
qol: APCs are now emissive
code: Added emissive blockers to a bunch of stuff
/:cl:

code/__DEFINES/colours.dm

@@ -112,6 +112,8 @@
 #define LIGHT_COLOR_HOLY_MAGIC "#FFF743"
 /// deep crimson
 #define LIGHT_COLOR_BLOOD_MAGIC "#D00000"
+/// Warm red color rgb(250, 66, 66)
+#define LIGHT_COLOR_RED "#ff3b3b"
 
 /* These ones aren't a direct color like the ones above, because nothing would fit */
 /// Warm orange color, leaning strongly towards yellow. rgb(250, 160, 25)

code/game/objects/items.dm

@@ -4,6 +4,7 @@
 	mouse_drag_pointer = MOUSE_ACTIVE_POINTER
 	layer = ITEM_LAYER
 	light_system = MOVABLE_LIGHT
+	blocks_emissive = EMISSIVE_BLOCK_GENERIC
 	/// this saves our blood splatter overlay, which will be processed not to go over the edges of the sprite
 	var/image/blood_overlay = null
 	var/randpixel = 6

code/game/objects/structures/crates_lockers/closets.dm

@@ -5,6 +5,7 @@
 	icon_state = "closed"
 	density = TRUE
 	layer = BELOW_OBJ_LAYER
+	blocks_emissive = EMISSIVE_BLOCK_GENERIC
 	var/icon_closed = "closed"
 	var/icon_opened = "open"
 	var/opened = 0

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

@@ -1,6 +1,7 @@
 /mob/living/carbon/human
 	light_system = MOVABLE_LIGHT
 	rotate_on_lying = TRUE
+	blocks_emissive = EMISSIVE_BLOCK_UNIQUE
 	//Hair color and style
 	var/r_hair = 0
 	var/g_hair = 0

code/modules/mob/mob_defines.dm

@@ -3,6 +3,7 @@
 	layer = MOB_LAYER
 	animate_movement = 2
 	rebounds = TRUE
+	blocks_emissive = EMISSIVE_BLOCK_GENERIC
 	var/mob_flags = NO_FLAGS
 	var/datum/mind/mind
 

code/modules/power/apc.dm

@@ -118,6 +118,8 @@ GLOBAL_LIST_INIT(apc_wire_descriptions, list(
 
 	var/printout = FALSE
 	power_machine = TRUE
+	light_range = 1
+	light_power = 0.5
 
 	appearance_flags = TILE_BOUND
 
@@ -426,6 +428,8 @@ GLOBAL_LIST_INIT(apc_wire_descriptions, list(
 									//2 if we need to update the overlays
 	if(!update)
 		return
+
+	set_light(0)
 
 	if(update & 1) //Updating the icon state
 		if(update_state & UPSTATE_ALLGOOD)
@@ -457,12 +461,32 @@ GLOBAL_LIST_INIT(apc_wire_descriptions, list(
 			overlays = 0
 
 		if(!(stat & (BROKEN|MAINT)) && update_state & UPSTATE_ALLGOOD)
-			overlays += status_overlays_lock[locked + 1]
-			overlays += status_overlays_charging[charging + 1]
+			var/image/_lock = status_overlays_lock[locked + 1]
+			var/image/_charging = status_overlays_charging[charging + 1]
+			var/image/_equipment = status_overlays_equipment[equipment + 1]
+			var/image/_lighting = status_overlays_lighting[lighting + 1]
+			var/image/_environ = status_overlays_environ[environ + 1]
+
+			overlays += emissive_appearance(_lock.icon, _lock.icon_state)
+			overlays += mutable_appearance(_lock.icon, _lock.icon_state)
+			overlays += emissive_appearance(_charging.icon, _charging.icon_state)
+			overlays += mutable_appearance(_charging.icon, _charging.icon_state)
 			if(operating)
-				overlays += status_overlays_equipment[equipment + 1]
-				overlays += status_overlays_lighting[lighting + 1]
-				overlays += status_overlays_environ[environ + 1]
+				overlays += emissive_appearance(_equipment.icon, _equipment.icon_state)
+				overlays += mutable_appearance(_equipment.icon, _equipment.icon_state)
+				overlays += emissive_appearance(_lighting.icon, _lighting.icon_state)
+				overlays += mutable_appearance(_lighting.icon, _lighting.icon_state)
+				overlays += emissive_appearance(_environ.icon, _environ.icon_state)
+				overlays += mutable_appearance(_environ.icon, _environ.icon_state)
+
+			switch(charging)
+				if(APC_NOT_CHARGING)
+					set_light_color(LIGHT_COLOR_RED)
+				if(APC_CHARGING)
+					set_light_color(LIGHT_COLOR_BLUE)
+				if(APC_FULLY_CHARGED)
+					set_light_color(LIGHT_COLOR_GREEN)
+			set_light(initial(light_range))
 
 /obj/structure/machinery/power/apc/proc/check_updates()
 

code/modules/vehicles/vehicle.dm

@@ -6,6 +6,7 @@
 	anchored = TRUE
 	animate_movement = 1
 	can_buckle = TRUE
+	blocks_emissive = EMISSIVE_BLOCK_GENERIC
 
 	// The mobs that are in each position/seat of the vehicle
 	var/list/mob/seats = list(