rest

function ctc:SwitchCostumeRequirementold(hasTrinket, trinketId, costumeId)		-- outdated, but left in just in case with problems with the playerData version
	for i = 0, (game:GetNumPlayers() - 1) do
		local player = Isaac.GetPlayer(i)
		if hasTrinket == true then
			if player:GetTrinket(0) ~= nil then	-- the player holds at least something
				if player:GetTrinket(0) == trinketId
				or player:GetTrinket(1) == trinketId then
					player:TryRemoveNullCostume(costumeId)	-- remove costume

					-- allow the moddedCos. boolean to be switched in the callback
					hasTrinket = false		-- switches the moddedCos. variable of the currrent trinket to 'false'..
										-- in the MC_EXECUTE_CMD callback of the Mod which calls the function
				end
			end
		end
	end
end

-- functions used in the MC_POST_UPDATE callback of mods which want the compatibility

function ctc:AddTrinketCostume(player, trinketId, costumeId)
	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

			-- costume would get applied by smelting the trinket
			player:AddNullCostume(costumeId)

			-- allow the moddedCos. boolean to be switched in the callback
			hasTrinketCostume = true		-- switches the moddedCos. variable of the curreent trinket to 'true'..
								-- in the MC_POST_UPDATE callback of the Mod whihc calls the function
		end
	else
	 	if player:HasTrinket(trinketId) then
			-- costume would get applied by picking up the trinket
			player:AddNullCostume(costumeId)

			-- allow the moddedCos. boolean to be switched in the callback
			hasTrinketCostume = true		-- switches the moddedCos. variable of the curreent trinket to 'true'..
								-- in the MC_POST_UPDATE callback of the Mod whihc calls the function
		end
	end
end


-- ex. ctc:RemoveTrinketCostume(player, costumeId)
function ctc:RemoveTrinketCostume (player, trinketId, costumeId)
	if not player:HasTrinket(trinketId) then
		-- costume would get applied by picking up the trinket
		player:TryRemoveNullCostume(costumeId)
	end
end