观察者模式类图

KittyBreeding

-uint256 public autoBirthFee = 2 finney;-uint256 public pregnantKitties;-GeneScienceInterface public geneScience;

+ Pregnant+ setGeneScienceAddress+ _isReadyToBreed+ _isSiringPermitted+ _triggerCooldown+ approveSiring+ setAutoBirthFee+ _isReadyToGiveBirth+ isReadyToBreed+ isPregnant+ _isValidMatingPair+ _canBreedWithViaAuction+ canBreedWith+ _breedWith+ breedWithAuto+ giveBirth

struct Kitty

－uint256 genes;－uint64 birthTime;－uint64 cooldownEndBlock;－uint32 matronId;－uint32 sireId;－uint32 siringWithId;－uint16 cooldownIndex;－uint16 generation;

KittyAccessControl

-address public ceoAddress-address public cfoAddress-address public cooAddress-bool public paused = false;

+ onlyCEO+ onlyCFO+ onlyCOO+ onlyCLevel+ setCEO+ setCFO+ setCOO+ whenNotPaused+ whenPaused+ pause+ unpause

ERC721Metadata

+getMetadata

KittyCore

-address public newContractAddress;

+ KittyCore+ setNewAddress+ function() external payable+ getKitty+ unpause+ withdrawBalance

KittyBase

-uint32[14] public cooldowns-uint256 public secondsPerBlock-Kitty[] kitties;-mapping (uint256 = address) public kittyIndexToOwner;-mapping (address = uint256) ownershipTokenCount;-mapping (uint256 = address) public kittyIndexToApproved;-mapping (uint256 = address) public sireAllowedToAddress;-SaleClockAuction public saleAuction;-SiringClockAuction public siringAuction;

+ Birth+ Transfer+ _transfer+ _createKitty+ setSecondsPerBlock

SiringClockAuction

-bool public isSiringClockAuction = true;

+ SiringClockAuction+ createAuction+ bid

Pausable

-bool public paused = false;

+ Pause+ Unpause+ whenNotPaused+ whenPaused+ pause+ unpause

KittyOwnership

-string public constant name = \"CryptoKitties\";-string public constant symbol = \"CK\";-ERC721Metadata public erc721Metadata;-bytes4 constant InterfaceSignature_ERC165 = bytes4(keccak256('supportsInterface(bytes4)'));－bytes4 constant InterfaceSignature_ERC721

+ supportsInterface+ setMetadataAddress+ _owns+ _approvedFor+ _approve+ balanceOf+ transfer+ approve+ whenPaused+ pause+ unpause

ERC721

+ totalSupply+ balanceOf+ ownerOf+ approve+ transfer+ transferFrom+ Transfer+ Approval+ supportsInterface

ClockAuction

-bytes4 constant InterfaceSignature_ERC721 = bytes4(0x9a20483d);

+ ClockAuction+ withdrawBalance+ createAuction+ bid+ cancelAuction+ cancelAuctionWhenPaused+ getAuction+ getCurrentPrice

SaleClockAuction

-bool public isSaleClockAuction = true;-uint256 public gen0SaleCount;-uint256[5] public lastGen0SalePrices;

+ SaleClockAuction+ createAuction+ bid+ averageGen0SalePrice

KittyAuction

+ setSaleAuctionAddress+ setSiringAuctionAddress+ createSaleAuction+ createSiringAuction+ bidOnSiringAuction+ withdrawAuctionBalances

ClockAuctionBase

-struct Auction-ERC721 public nonFungibleContract;-uint256 public ownerCut;-mapping (uint256 = Auction) tokenIdToAuction;

+ AuctionCreated+ AuctionSuccessful+ AuctionCancelled+ _owns+ _escrow+ _transfer+ _addAuction+ _cancelAuction+ _bid+ _removeAuction+ _isOnAuction+ _currentPrice+ _computeCurrentPrice+ _computeCut

Ownable

-address public owner

+ Ownable+ onlyOwner+ transferOwnership

GeneScienceInterface

+ isGeneScience+ mixGenes

KittyMinting

-uint256 public constant PROMO_CREATION_LIMIT = 5000;-uint256 public constant GEN0_CREATION_LIMIT = 45000;-uint256 public constant GEN0_STARTING_PRICE = 10 finney;-uint256 public constant GEN0_AUCTION_DURATION = 1 days;-uint256 public promoCreatedCount;-uint256 public gen0CreatedCount;

+ createPromoKitty+ createGen0Auction+ _computeNextGen0Price