ERC-6220 Composable NFTs utilizing Equippable Parts

FinalERCcreated 2022-12-20requires ERC-165, ERC-721, ERC-5773, ERC-6059

An interface for Composable non-fungible tokens through fixed and slot parts equipping.

Authors: Bruno Škvorc (@Swader), Cicada (@CicadaNCR), Steven Pineda (@steven2308), Stevan Bogosavljevic (@stevyhacker), Jan Turk (@ThunderDeliverer)

ERC-165 interface ids

Computed here as the XOR of the selectors each interface defines.

IERC6220 0x28bc9ae4

`0x074334fb`	`canTokenBeEquippedWithAssetIntoSlot(address,uint256,uint64,uint64)`	view
`0x38dcf74c`	`equip((uint256,uint256,uint64,uint64,uint64))`
`0x4e60edba`	`getAssetAndEquippableData(uint256,uint64)`	view
`0x7507e2ae`	`getEquipment(uint256,address,uint64)`	view
`0xee1dffcf`	`isChildEquipped(uint256,address,uint256)`	view
`0xc259a988`	`unequip(uint256,uint64,uint64)`

`0xfc3517c8`	`acceptAsset(uint256,uint256,uint64)`	ERC-5773
`0x5ea72f36`	`approveForAssets(address,uint256)`	ERC-5773
`0x5e94354a`	`getActiveAssetPriorities(uint256)`	ERC-5773
`0x7280281e`	`getActiveAssets(uint256)`	ERC-5773
`0xe467a48f`	`getApprovedForAssets(uint256)`	ERC-5773
`0x5e2e3292`	`getAssetMetadata(uint256,uint64)`	ERC-5773
`0xdf6f556b`	`getAssetReplacements(uint256,uint64)`	ERC-5773
`0x51532e5a`	`getPendingAssets(uint256)`	ERC-5773
`0x22e6d160`	`isApprovedForAllForAssets(address,address)`	ERC-5773
`0xe7de4de4`	`rejectAllAssets(uint256,uint256)`	ERC-5773
`0x22f6da9c`	`rejectAsset(uint256,uint256,uint64)`	ERC-5773
`0x8507dc28`	`setApprovalForAllForAssets(address,bool)`	ERC-5773
`0xde8e602c`	`setPriority(uint256,uint64[])`	ERC-5773
`0x01ffc9a7`	`supportsInterface(bytes4)`	ERC-165

Interfaces the spec defines alongside the core one, which an implementation may or may not carry.

`0x86a92af7`	`getMetadataURI()`
`0x15dae03e`	`getType()`
`0xdcb79d56`	`checkIsEquippable(uint64,address)`
`0xdc477d2f`	`checkIsEquippableToAll(uint64)`
`0xd297ac43`	`getPart(uint64)`
`0x9806c6ec`	`getParts(uint64[])`

Topic0 is the keccak256 hash of the signature, which is what a log filter matches on.

`0x1f5de02b1d9c93ca468f54630e1daf13f6dc458a63f8061ff73e85bf9bc38884`	`ChildAssetEquipped(uint256,uint64,uint64,uint256,address,uint64)`
`0x438e039ebbba8f290f3b5d41aaf3295eccc9b5e6b0e1d52ace700772afb7da13`	`ChildAssetUnequipped(uint256,uint64,uint64,uint256,address,uint64)`
`0x5b5af0622001a9b735a56357ddc1abd65e6a640126498674daf9d2fb05160725`	`ValidParentEquippableGroupIdSet(uint64,uint64,address)`
`0xc4715b52aed3b9dfb2fbdc63e39e234892ec1dd3811d2c671646dbfd3d32d92e`	`AddedPart(uint64,uint8,uint8,address[],string)`
`0x379edf7304a765a58c7eba1fef9bc8675355bf31e276de44d60da39bb04c76ba`	`AddedEquippables(uint64,address[])`
`0x507a75726ac34d3eb68ebf61f034616ee2030c6193bd4a9efb7e131de6c6adcc`	`SetEquippables(uint64,address[])`
`0x540b0b22993accb6c2b7b0f4a5bd1b7e6419708ef2a68c39f09f01c848ba4fbc`	`SetEquippableToAll(uint64)`