Added new trunk.

Code/modules.dm

@@ -0,0 +1,106 @@
+
+// module datum.
+// this is per-object instance, and shows the condition of the modules in the object
+// actual modules needed is referenced through modulestypes and the object type
+
+/datum/module
+	var/status				// bits set if working, 0 if broken
+	var/installed			// bits set if installed, 0 if missing
+
+// moduletypes datum
+// this is per-object type, and shows the modules needed for a type of object
+
+/datum/moduletypes
+	var/list/modcount = list()	// assoc list of the count of modules for a type
+
+
+var/list/modules = list(			// global associative list
+"/obj/machinery/power/apc" = "card_reader,power_control,id_auth,cell_power,cell_charge")
+
+
+
+
+
+/datum/module/New(var/obj/O)
+
+	var/type = O.type		// the type of the creating object
+
+	var/mneed = mods.inmodlist(type)		// find if this type has modules defined
+
+	if(!mneed)		// not found in module list?
+		del(src)	// delete self, thus ending proc
+
+	var/needed = mods.getbitmask(type)		// get a bitmask for the number of modules in this object
+	status = needed
+	installed = needed
+
+/datum/moduletypes/proc/addmod(var/type, var/modtextlist)
+
+	modules += type	// index by type text
+	modules[type] = modtextlist
+
+
+/datum/moduletypes/proc/inmodlist(var/type)
+	return ("[type]" in modules)
+
+/datum/moduletypes/proc/getbitmask(var/type)
+	var/count = modcount["[type]"]
+	if(count)
+		return 2**count-1
+
+	var/modtext = modules["[type]"]
+	var/num = 1
+	var/pos = 1
+
+	while(1)
+		pos = findText(modtext, ",", pos, 0)
+		if(!pos)
+			break
+		else
+			pos++
+			num++
+
+	modcount += "[type]"
+	modcount["[type]"] = num
+
+	return 2**num-1
+
+
+/obj/item/weapon/module
+	icon = 'module.dmi'
+	icon_state = "std_module"
+	w_class = 2.0
+	s_istate = "electronic"
+	flags = FPRINT|DRIVABLE|TABLEPASS
+	var/mtype = 1						// 1=electronic 2=hardware
+
+/obj/item/weapon/module/card_reader
+	name = "card reader module"
+	icon_state = "card_mod"
+	desc = "An electronic module for reading data and ID cards."
+
+/obj/item/weapon/module/power_control
+	name = "power control module"
+	icon_state = "power_mod"
+	desc = "Heavy-duty switching circuits for power control."
+
+/obj/item/weapon/module/id_auth
+	name = "ID authentication module"
+	icon_state = "id_mod"
+	desc = "A module allowing secure authorization of ID cards."
+	var/access = null
+	var/allowed = null
+
+/obj/item/weapon/module/cell_power
+	name = "power cell regulator module"
+	icon_state = "power_mod"
+	desc = "A converter and regulator allowing the use of power cells."
+
+/obj/item/weapon/module/cell_power
+	name = "power cell charger module"
+	icon_state = "power_mod"
+	desc = "Charging circuits for power cells."
+
+
+
+