• Git repository done

• ERC721 token created

• All functions in ERC721.sol corrected (because of errors) and implemented

• registerBreeder() implemented in Breeding.sol

• declareAnimal() implemented in Breeding.sol

• deadAnimal() implemented in Breeding.sol

• breedAnimal() implemented in Breeding.sol

• declareAuction() and auctions done in BidAuction.sol

• fight() implemented inf Fighting.sol

• We tried to test the contract on Rinkeby with the address btu we couldn't solve the problems

We choosed to create a structure Animal with different features:

species, name, age and color are the characteristics of the animal to recognize it.

readyTime is a cooldown before each breeding.

winCount and lossCount are used for the fights.

There are different mapping:

• animalToOwner to have the Owner of the animal with the Id animalId.
• ownerAnimalCount to have the number of animals by Owner

We created 3 event:

• NewAnimal when it is declared
• DeadAnimal when an animal died
• BreedAnimal when two animals couple

In declareAnimal() we put a require to prevent from attacks because would declare an animal for another one and it is not the case here. In this function, the characteristics are given in the function and we create and push the created animal in the array animals that stores all the animals. We emit the event NewAnimal at the end.

In deadAnimal() we deleted the animal from the array;

In BreedAnimal(), we created a modifier ReadytoBreed(_animalId) to see if the animal is ready to breed. In fact we check their cooldowns readyTime, an animal can't couple twice in 6 months. The color is randomly choosen between the color of both parents. We also put a require to see if both animals have the same species. We created a modifier OwnerOf(_animalId).

For whitelisting, we created an array Owners in the contract. The owners are registered by the function registerOwner(address _owner).

Maybe we inversed the meaning of Auction and Bid.

We created two structures :

• BidAnimal for the animals too sell by auction
• Auction to give a bid for a BidAnimal

The function setAnimalToBid() was created to put an animal in auction by the owner of the animal, so we put a modifier OwnerOf(). We created an array bidanimals to store the animals put in auction. We emit the event AnimalToBid at the end.

There is only one bid per address so we created a firstAuction() modifier. The bid can be updated but we can't create two bids per adress for the same Animal.

The function HasNoAuction() is used for the modifier firstAuction, we verify that there isn't two bid by animal by address.

To claim an auction, we use the function claimAuction(), we verify if it is the good person who uses the function with the modifier ValidatedAuction() and we transfer the token (the animal).

Every auction can be updated with the function updatedAuction(), only the price can be updated. Only the owner of the auction can modify it, we did that with the modifier onlyAuctionner().

A structure FightAnimal was created with the feature readyToFight. When an animal is readyToFight, everyone can fight it. If someone wants to fight this animal, he can use the function fight() and every fight is 50% win for each animal. We didn't have the time to perform that. The winCount and the lossCount will increase and it will be better to sel them in Auction for example.