Modded trinket support

-- Modded trinket support / ex. Mod.AddTrinketCostumes(trinketVar, trinketId, costumeId)
function AddTrinketCostumes (trinketVar, trinketId, costumeId)
	for i = 0, (game:GetNumPlayers() - 1) do
		local player = Isaac.GetPlayer(i)

		if onPickup == false then -- costume would get applied by smelting the trinket
			if player:GetTrinket(0) ~= trinketId
			and player:GetTrinket(1) ~= trinketId
			and applyCostume == true then		-- still follows the same rules as base game trinkets
				player:AddNullCostume(costumeId)
				trinketVar = true
			end
		else			-- costume would get applied by picking up the trinket
			player:AddNullCostume(costumeId)
			trinketVar = true
		end
	end
end