--By Mami

--[[
global: {
	total_ticks: int
	layout_top_id: int
	to_output: {[comb_unit_number]: LuaEntity}
	to_stop: {[comb_unit_number]: LuaEntity}
	stations: {[stop_id]: Station}
	depots: {[stop_id]: LuaEntity}
	trains: {[train_id]: Train}
	trains_available: {[train_id]: bool}
	layouts: {[layout_id]: Layout}
	layout_train_count: {[layout_id]: int}
	train_classes: {[string]: TrainClass}
}
Station: {
	deliveries_total: int
	priority: int
	last_delivery_tick: int
	r_threshold: int >= 0
	p_threshold: int >= 0
	locked_slots: int >= 0
	entity_stop: LuaEntity
	entity_comb1: LuaEntity
	entity_comb2: LuaEntity?
	wagon_combs: {[int]: LuaEntity}--allowed to be invalid entities
	deliveries: {
		[item_name]: int
	}
	deliveries: {
		[item_name]: item-type
	}
	train_class: string
	accepted_layouts: TrainClass
	layout_pattern: string|nil
}
Train: {
	entity: LuaEntity
	layout_id: int
	item_slot_capacity: int
	fluid_capacity: int
	depot_name: string
	status: int
	p_station_id: stop_id
	r_station_id: stop_id
	manifest: [{
		name: string
		type: string
		count: int
	}]
}
TrainClass: {
	[layout_id]: bool
}
Layout: string
]]
--TODO: only init once
mod_settings = {}
mod_settings.tps = settings.global["cybersyn-ticks-per-second"].value
mod_settings.r_threshold = settings.global["cybersyn-request-threshold"].value
mod_settings.p_threshold = settings.global["cybersyn-provide-threshold"].value

global.total_ticks = 0
global.to_output = {}
global.stations = {}
global.depots = {}
global.trains = {}
global.trains_available = {}
global.layouts = {}
global.layout_train_count = {}
global.layout_top_id = 1
global.train_classes = {
	[TRAIN_CLASS_ALL] = {},
}