Item Exchange
| Part of a series on |
| Mechanics and Plugins |
|---|
 |
| Core Mechanics |
| Common Mechanics |
| Minor Mechanics |
ItemExchange is a community-made plugin that facilitates asynchronous trade without sacrificing physicality or raidability.
Mechanics
Shops chests are created when they contain Exchange Rules: encoded buttons which specify the rules of an exchange. Exchanges are made of pairs of inputs and outputs (though an output rule is not strictly necessary and a "donation" item exchange uses only an input rule). Bulk exchange rules are a single encoded button which contains within it one or more pairs of Exchange Rules.
Players can view and cycle through a shop's available exchanges by punching a shop chest, preferably with an empty hand. If the player then punches the chest again on a given exchange with a matching input, and the shop chest is stocked, then the exchange is transacted.
Shops can, by default, be made with chests, trapped chests, barrels, dispensers, and droppers. Find out what containers are supported using the /ieinfo shopblocks command.
ItemExchange differs from other market and trade plugins in that it functions on a series of rules and criteria, rather than selling specific items. An Exchange Rule that ONLY specifies that the output is a Diamond Pickaxe will be able to output ANY Diamond Pickaxe, enchanted or not, used or not, repaired or not, named or not, etc.
Creating an Exchange Rule
There are three ways to create an Exchange Rule, each via the /iecreate command (/iec):
/iecreate <input/output>while holding an item in your main hand will create a rule with its criteria as close to matching that item as possible.
/iecreate <input/output> <material> [amount]will create a barebones rule of just the material and the amount, which defaults to 1 if not specified. See Paper's Material list for reference.
/iecreatewhile looking at a chest (or other supported container) containing one or two stacks will add a corresponding input and output rule for those items. If the container is reinforced, you must have the required permissions for this command to function.
Modifying an Exchange Rule
Exchange Rules can be modified using the /ieset command (/ies) while holding the button:
/ieset material <material>will update the material. See Paper's Material list for reference.
/ieset amount <amount>will update the amount, which must be higher than zero.
/ieset switchiowill flip the exchange rule from an input to an output, and vice versa.
Exchange Rules can also contain Modifiers, which are additional bits of criteria that can increase the specificity of an exchange.
/ieset durability [damage]will update how damaged the item should be. Not specifying the damage (or inputting "ANY") will cause the Exchange Rule to ignore durability altogether; inputting "USED" will cause the Exchange Rule to only accept damaged items.
/ieset repair [level]will update the repair level of the item. This is useful if you wish to assure your customers that you're not selling them 33-level repair tools. Not specifying the repair level will cause the Exchange Rule to ignore repair levels altogether. If you specify a level with a proceeding "@" (eg: "@9") then the Exchange Rule will only accept items with a repair level of exactly 9; otherwise just specifying "9" will cause the Exchange Rule to accept items with a repair level 9 or lower.
/ieset ignoreenchantswill cause the Exchange Rule to ignore enchantments altogether.
/ieset allowenchantswill cause the Exchange Rule to ignore unspecified enchantments./ieset denyenchantswill do the opposite, ensuring that only the specified enchants are allowed.
/ieset enchant <+/?/-><enchantment>[level]will [re]set enchantment requirements for the Exchange Rule. See Paper's Enchantment list for reference. You can add a required enchantment like so/ieset enchant +DURABILITY3where the level is optional: not including the level will mean any level is adequate to meet the requirement. You can also add an excluded enchantment like so/ieset enchant -DURABILITYmeaning that the item must NOT be enchanted with DURABILITY to meet the requirement. You can then reset an enchantment rule via/ieset enchant ?DURABILITY
/ieset ignoredisplaynamewill cause the Exchange Rule to ignore display names.
/ieset displayname [name]will set the required display name. Not specifying a name will cause the Exchange Rule to ignore display names.
/ieset ignorelorewill cause the Exchange Rule to ignore item lore.
/ieset lore [lore]will set the required item lore. Not specifying any lore will cause the Exchange Rule to ignore item lore. You can set multiple lines by delimiting each line with a semicolon like so/ieset lore First Line;Second Line
/ieset group [group]will set the required NameLayer group the player must have the necessary permissions on to use the exchange. Not specifying the group will cause the Exchange Rule to ignore group requirements. Group requirements only function on input rules.
Relays
Ender chests search and return contents of shops chests that are within 4 blocks apart between ender chests and shops chests when clicked. Any blocks except iron fences and glasses in between both will block ender chests from search and connect to shops chests.
External Links
- https://old.reddit.com/r/civclassics/comments/hh646y/introducing_shop_relays_using_ender_chests_to/ - an introduction to relays
- https://github.com/DevotedMC/ItemExchange - ItemExchange on the DevotedMC Github Wiki