ui = require "ui"
reg = ...

reg.list = {}

-- name - string, the name of the ability
-- infocard, the table of info and description to draw when looking at the ability
-- data, the table that contains data and functions for running the ability
-- visuals, the table of sprites that the data needs to function
class Ability
	@children = {}
	new: (name, data) =>
		@sprite = @@sprite
		@name = name or @.__class.__name
		@data = data
	
	@__inherited: (child) =>
		assert(child.use, "abilities must have a .use")
		assert(type(child.use) == "function", "abilities must have a .use() function")
		assert(type(child.load) == "function", "abilities must have a .load() that shows their infocard")
		assert(type(child.unload) == "function", "abilities must have an .unload() that removes their infocard")
		assert(child.text, "ability must have text")
		assert(child.description, "ability must have a description")
		assert(child.hits_icon, "ability must have a hits icon")
		assert(child.speed, "ability must have a speed")
		@@.children[child.__name] = child
		reg[child.__name] = child
	
	load: () =>
		main = require "main"
		infocard = am.group!\tag("infocard")
		main.root("screen")\append(infocard)
		ui.build_infocard(infocard,@@)

	unload: () =>
		main = require "main"
		main.root\remove("infocard")
	--__tostring: () =>
	--	return string.format("<%s, %s>",@.__class.__name, @name or ".name missing")

reg["Ability"] = Ability

return reg