DF_POWERUPS = {}
DF_POWERUPS_WEIGHT_TOTAL = 0

function RegisterPowerup(tab, class)
	//print("REGISTERING",class)
	if SERVER then
		resource.AddFile("materials/"..tab.Texture..".vtf")
		resource.AddFile("materials/"..tab.Texture..".vmt")
		
		resource.AddFile("materials/"..tab.Texture.."_box.vtf")
		resource.AddFile("materials/"..tab.Texture.."_box.vmt")
	end
	table.insert(DF_POWERUPS, {TABLE=tab,CLASS=class})
end

function CalculateWeights()
	for k,v in pairs(DF_POWERUPS) do
		v.TABLE.MinSelect = DF_POWERUPS_WEIGHT_TOTAL
		DF_POWERUPS_WEIGHT_TOTAL = DF_POWERUPS_WEIGHT_TOTAL + v.TABLE.PowerupWeight
		v.TABLE.MaxSelect = DF_POWERUPS_WEIGHT_TOTAL
	end
	for k,v in pairs(DF_POWERUPS) do
		local frc = (v.TABLE.MaxSelect - v.TABLE.MinSelect) / DF_POWERUPS_WEIGHT_TOTAL
		//print("CHANCE FOR", v.CLASS, math.floor(frc * 100).."%")
	end
end

hook.Add("Initialize", "Powerupinit", CalculateWeights)

//returns the table of a random powerup
function GetRandomPowerup()
	local target = math.random(1,DF_POWERUPS_WEIGHT_TOTAL)
	for _,pwp in pairs(DF_POWERUPS) do
		if pwp.TABLE.MinSelect < target and pwp.TABLE.MaxSelect >= target then
			return pwp
		end
	end
end

function TestPowerupWeights(ply,cmd,args)
	local tests = tonumber(args[1]) or 1000;
	if tests > 100000 then tests = 100000 end
	local Result = {}
	for i=1, tests do
		powerup = GetRandomPowerup().CLASS
		if Result[powerup] == nil then
			Result[powerup] = 1
		else
			Result[powerup] = Result[powerup] + 1
		end
	end
	print("Powerup Distribution:")
	for k,v in pairs(Result) do
		local perc = v / tests * 100
		print(k.." : "..tostring(math.Round(perc * 100) / 100).."%")
	end
end

concommand.Add("df_testweights", TestPowerupWeights)