Ports https://github.com/tgstation/tgstation/pull/44525, and

And fixes to make stuff work

code/game/mecha/mecha_control_console.dm

@@ -5,12 +5,9 @@
 	icon_keyboard = "tech_key"
 	req_access = list(ACCESS_ROBOTICS)
 	circuit = /obj/item/circuitboard/computer/mecha_control
-	var/list/located = list()
-	var/screen = 0
-	var/stored_data
 	ui_x = 500
 	ui_y = 500
-	
+
 /obj/machinery/computer/mecha/ui_interact(mob/user, ui_key = "main", datum/tgui/ui = null, force_open = FALSE, \
 									datum/tgui/master_ui = null, datum/ui_state/state = GLOB.default_state)
 	ui = SStgui.try_update_ui(user, src, ui_key, ui, force_open)
@@ -18,42 +15,64 @@
 		ui = new(user, src, ui_key, "ExosuitControlConsole", name, ui_x, ui_y, master_ui, state)
 		ui.open()
 
-	if(screen==1)
-		dat += "<h3>Log contents</h3>"
-		dat += "<a href='?src=[REF(src)];return=1'>Return</a><hr>"
-		dat += "[stored_data]"
+/obj/machinery/computer/mecha/ui_data(mob/user)
+	var/list/data = list()
 
-	dat += "<A href='?src=[REF(src)];refresh=1'>(Refresh)</A><BR>"
-	dat += "</body></html>"
+	var/list/trackerlist = list()
+	for(var/obj/mecha/MC in GLOB.mechas_list)
+		trackerlist += MC.trackers
 
-	user << browse(dat, "window=computer;size=400x500")
-	onclose(user, "computer")
+	data["mechs"] = list()
+	for(var/obj/item/mecha_parts/mecha_tracking/MT in trackerlist)
+		if(!MT.chassis)
+			continue
+		var/obj/mecha/M = MT.chassis
+		var/list/mech_data = list(
+			name = M.name,
+			integrity = round((M.obj_integrity / M.max_integrity) * 100),
+			charge = M.cell ? round(M.cell.percent()) : null,
+			airtank = M.internal_tank ? M.return_pressure() : null,
+			pilot = M.occupant,
+			location = get_area_name(M, TRUE),
+			active_equipment = M.selected,
+			emp_recharging = MT.recharging,
+			tracker_ref = REF(MT)
+		)
+		if(istype(M, /obj/mecha/working/ripley))
+			var/obj/mecha/working/ripley/RM = M
+			mech_data += list(
+				cargo_space = round((RM.cargo.len / RM.cargo_capacity) * 100)
+		)
 
-/obj/machinery/computer/mecha/Topic(href, href_list)
+		data["mechs"] += list(mech_data)
+
+	return data
+
+/obj/machinery/computer/mecha/ui_act(action, params)
 	if(..())
 		return
-	if(href_list["send_message"])
-		var/obj/item/mecha_parts/mecha_tracking/MT = locate(href_list["send_message"])
-		if (!istype(MT))
-			return
-		var/message = stripped_input(usr,"Input message","Transmit message")
-		var/obj/mecha/M = MT.in_mecha()
-		if(trim(message) && M)
-			M.occupant_message(message)
-		return
-	if(href_list["shock"])
-		var/obj/item/mecha_parts/mecha_tracking/MT = locate(href_list["shock"])
-		if (istype(MT))
-			MT.shock()
-	if(href_list["get_log"])
-		var/obj/item/mecha_parts/mecha_tracking/MT = locate(href_list["get_log"])
-		if(istype(MT))
-			stored_data = MT.get_mecha_log()
-			screen = 1
-	if(href_list["return"])
-		screen = 0
-	updateUsrDialog()
-	return
+
+	switch(action)
+		if("send_message")
+			var/obj/item/mecha_parts/mecha_tracking/MT = locate(params["tracker_ref"])
+			if(!istype(MT))
+				return
+			var/message = stripped_input(usr, "Input message", "Transmit message")
+			var/obj/mecha/M = MT.chassis
+			if(trim(message) && M)
+				M.occupant_message(message)
+				to_chat(usr, "<span class='notice'>Message sent.</span>")
+				. = TRUE
+		if("shock")
+			var/obj/item/mecha_parts/mecha_tracking/MT = locate(params["tracker_ref"])
+			if(!istype(MT))
+				return
+			var/obj/mecha/M = MT.chassis
+			if(M)
+				MT.shock()
+				log_game("[key_name(usr)] has activated remote EMP on exosuit [M], located at [loc_name(M)], which is currently [M.occupant? "being piloted by [key_name(M.occupant)]." : "without a pilot."] ")
+				message_admins("[key_name_admin(usr)][ADMIN_FLW(usr)] has activated remote EMP on exosuit [M][ADMIN_JMP(M)], which is currently [M.occupant ? "being piloted by [key_name_admin(M.occupant)][ADMIN_FLW(M.occupant)]." : "without a pilot."] ")
+				. = TRUE
 
 /obj/item/mecha_parts/mecha_tracking
 	name = "exosuit tracking beacon"
@@ -61,24 +80,31 @@
 	icon = 'icons/obj/device.dmi'
 	icon_state = "motion2"
 	w_class = WEIGHT_CLASS_SMALL
-	var/ai_beacon = FALSE //If this beacon allows for AI control. Exists to avoid using istype() on checking.
-	var/recharging = 0
+	/// If this beacon allows for AI control. Exists to avoid using istype() on checking
+	var/ai_beacon = FALSE
+	/// Cooldown variable for EMP pulsing
+	var/recharging = FALSE
+	/// The Mecha that this tracking beacon is attached to
+	var/obj/mecha/chassis
 
+/**
+  * Returns a html formatted string describing attached mech status
+  */
 /obj/item/mecha_parts/mecha_tracking/proc/get_mecha_info()
-	if(!in_mecha())
-		return 0
-	var/obj/mecha/M = src.loc
-	var/cell_charge = M.get_charge()
-	var/answer = {"<b>Name:</b> [M.name]
-<b>Integrity:</b> [M.obj_integrity/M.max_integrity*100]%
-<b>Cell charge:</b> [isnull(cell_charge)?"Not found":"[M.cell.percent()]%"]
-<b>Airtank:</b> [M.return_pressure()]kPa
-<b>Pilot:</b> [M.occupant||"None"]
-<b>Location:</b> [get_area(M)||"Unknown"]
-<b>Active equipment:</b> [M.selected||"None"] "}
-	if(istype(M, /obj/mecha/working/ripley))
-		var/obj/mecha/working/ripley/RM = M
-		answer += "<b>Used cargo space:</b> [RM.cargo.len/RM.cargo_capacity*100]%<br>"
+	if(!chassis)
+		return FALSE
+
+	var/cell_charge = chassis.get_charge()
+	var/answer = {"<b>Name:</b> [chassis.name]<br>
+				<b>Integrity:</b> [round((chassis.obj_integrity/chassis.max_integrity * 100), 0.01)]%<br>
+				<b>Cell Charge:</b> [isnull(cell_charge) ? "Not Found":"[chassis.cell.percent()]%"]<br>
+				<b>Airtank:</b> [chassis.internal_tank ? "[round(chassis.return_pressure(), 0.01)]" : "Not Equipped"] kPa<br>
+				<b>Pilot:</b> [chassis.occupant || "None"]<br>
+				<b>Location:</b> [get_area_name(chassis, TRUE) || "Unknown"]<br>
+				<b>Active Equipment:</b> [chassis.selected || "None"]"}
+	if(istype(chassis, /obj/mecha/working/ripley))
+		var/obj/mecha/working/ripley/RM = chassis
+		answer += "<br><b>Used Cargo Space:</b> [round((RM.cargo.len / RM.cargo_capacity * 100), 0.01)]%"
 
 	return answer
 
@@ -88,42 +114,41 @@
 		qdel(src)
 
 /obj/item/mecha_parts/mecha_tracking/Destroy()
-	if(ismecha(loc))
-		var/obj/mecha/M = loc
-		if(src in M.trackers)
-			M.trackers -= src
+	if(chassis)
+		if(src in chassis.trackers)
+			chassis.trackers -= src
+	chassis = null
 	return ..()
 
-/obj/item/mecha_parts/mecha_tracking/proc/in_mecha()
-	if(ismecha(loc))
-		return loc
-	return 0
+/obj/item/mecha_parts/mecha_tracking/try_attach_part(mob/user, obj/mecha/M)
+	if(!..())
+		return
+	M.trackers += src
+	M.diag_hud_set_mechtracking()
+	chassis = M
 
+/**
+  * Attempts to EMP mech that the tracker is attached to, if there is one and tracker is not on cooldown
+  */
 /obj/item/mecha_parts/mecha_tracking/proc/shock()
 	if(recharging)
 		return
-	var/obj/mecha/M = in_mecha()
-	if(M)
-		M.emp_act(EMP_HEAVY)
-		addtimer(CALLBACK(src, /obj/item/mecha_parts/mecha_tracking/proc/recharge), 15 SECONDS, TIMER_UNIQUE | TIMER_OVERRIDE)
-		recharging = 1
+	if(chassis)
+		chassis.emp_act(EMP_HEAVY)
+		addtimer(CALLBACK(src, /obj/item/mecha_parts/mecha_tracking/proc/recharge), 5 SECONDS, TIMER_UNIQUE | TIMER_OVERRIDE)
+		recharging = TRUE
 
+/**
+  * Resets recharge variable, allowing tracker to be EMP pulsed again
+  */
 /obj/item/mecha_parts/mecha_tracking/proc/recharge()
-	recharging = 0
-
-/obj/item/mecha_parts/mecha_tracking/proc/get_mecha_log()
-	if(!ismecha(loc))
-		return 0
-	var/obj/mecha/M = src.loc
-	return M.get_log_html()
-
+	recharging = FALSE
 
 /obj/item/mecha_parts/mecha_tracking/ai_control
 	name = "exosuit AI control beacon"
 	desc = "A device used to transmit exosuit data. Also allows active AI units to take control of said exosuit."
 	ai_beacon = TRUE
 
-
 /obj/item/storage/box/mechabeacons
 	name = "exosuit tracking beacons"
 

code/game/mecha/mecha_parts.dm

@@ -9,6 +9,13 @@
 	w_class = WEIGHT_CLASS_GIGANTIC
 	flags_1 = CONDUCT_1
 
+/obj/item/mecha_parts/proc/try_attach_part(mob/user, obj/mecha/M) //For attaching parts to a finished mech
+	if(!user.transferItemToLoc(src, M))
+		to_chat(user, "<span class='warning'>\The [src] is stuck to your hand, you cannot put it in \the [M]!</span>")
+		return FALSE
+	user.visible_message("<span class='notice'>[user] attaches [src] to [M].</span>", "<span class='notice'>You attach [src] to [M].</span>")
+	return TRUE
+	
 /obj/item/mecha_parts/chassis
 	name = "Mecha Chassis"
 	icon_state = "backbone"