public static string FeedReef(object[] args)
{
if (args.Length != 1)
{
Runtime.Log("* No Args");
return("no args");
}
byte[] reef = (byte[])args[0];
// I am the only one who can feed my reef
if (!Runtime.CheckWitness(reef))
{
Runtime.Log("* Not the Owner");
return("not owner");
}
BigInteger currentBlockHeight = BlockchainHelper.GetHeight(); // used in the whole method
BigInteger lastFedBH = ReefDao.GetBlockHeightFedReef(reef).AsBigInteger();
if (currentBlockHeight == lastFedBH)
{
Runtime.Log("* Fishes are not hungry");
return("not hungry");
}
byte[] fishesAlive = ReefDao.GetReefFishesAlive(reef); // fishes alive on the reef, used in the whole method
BigInteger fishesAliveLength = ListManager.GetLength(fishesAlive, FishManager.GetSize()); // used in the whole method
Runtime.Log(" ");
Runtime.Log("Fishes Alive:");
Runtime.Log(fishesAliveLength.AsByteArray().AsString());
Runtime.Log("------------");
BigInteger balance = FishCoinDao.BalanceOf(reef) / FishCoinProcess.DecimalsFactor;
// if there is not enough food, there is nothing to do, the food will not be consumed
if (balance < fishesAliveLength || balance <= 0)
{
Runtime.Log("* Not enough food");
return("no food");
}
// variables used to generate random
BigInteger consensusData = BlockchainHelper.GetConsensusData();
BigInteger randomStep = BlockchainHelper.GetRandomStep(); // a stepper to use a new random next time
BigInteger aRandom = 0; // the random variable
// if there is less than 2 fishes in the reef
if (fishesAliveLength < 2)
{
Runtime.Log("* There is less than 2 fishes alive in the reef");
aRandom = BlockchainHelper.Random(consensusData, randomStep);
randomStep = randomStep + 1;
// 25% probability to arrive a new fish that got interested by the food you give away
if (aRandom % 4 == 0)
{
Runtime.Log("* Immigrant arrived");
byte[] newImmigrant = FishManager.BuildImmigrant(reef, consensusData, randomStep);
randomStep = randomStep + 4; // it was used 4 times inside the method
fishesAlive = ListManager.Add(fishesAlive, newImmigrant);
fishesAliveLength = fishesAliveLength + 1;
Notifier.ImmigrantFish(reef, newImmigrant);
}
else
{
Runtime.Log("* No Immigrant today");
}
}
// if there is 2 or more fishes in the reef
else
{
Runtime.Log("* There is 2 or more fishes in the reef");
aRandom = BlockchainHelper.Random(consensusData, randomStep);
randomStep = randomStep + 1;
// 33.3% probability to fishes get laid
if (aRandom % 3 == 0)
{
Runtime.Log("* Fishs in love");
byte[] newBaby = new byte[0];
BigInteger indexFather;
BigInteger indexMother;
// if there is only 2 fishes they are the only possibility to mate
if (fishesAliveLength == 2)
{
Runtime.Log("* Exactly 2 lovers");
indexFather = 0;
indexMother = 1;
}
else
{
Runtime.Log("* More than 2 possible lovers");
// get a random fish to be the father
aRandom = BlockchainHelper.Random(consensusData, randomStep);
randomStep = randomStep + 1;
indexFather = aRandom % fishesAliveLength;
do
{
// get a random fish to be the mother, but a different fish of the father
aRandom = BlockchainHelper.Random(consensusData, randomStep);
randomStep = randomStep + 1;
indexMother = aRandom % fishesAliveLength;
Runtime.Log("* Looking for a pretty female");
} while (indexFather == indexMother);
}
byte[] father = ListManager.GetAt(fishesAlive, FishManager.GetSize(), indexFather);
byte[] mother = ListManager.GetAt(fishesAlive, FishManager.GetSize(), indexMother);
Runtime.Log("* Gestation");
newBaby = FishManager.BuildFromParents(consensusData, randomStep, father, mother);
randomStep = randomStep + father.Length; // tried random that many times
Runtime.Log("* Its a ... Fish!");
fishesAlive = ListManager.Add(fishesAlive, newBaby);
fishesAliveLength = fishesAliveLength + 1;
BigInteger newBornIndex = fishesAliveLength - 1;
Notifier.NewBornFish(reef, newBaby);
byte[] fatherFishType = FishManager.GetPropCarnivorous(father);
byte[] motherFishType = FishManager.GetPropCarnivorous(mother);
// if one of the parents are carnivorous and there is another silly fish ready to be a pray
if (fatherFishType[0] == 0 || motherFishType[0] == 0 || fishesAliveLength > 3)
{
Runtime.Log("* There is pray for the predator");
BigInteger fathersFedWithFishBlockHeight = FishManager.GetFedWithFishBlockHeight(father).AsBigInteger();
BigInteger mothersFedWithFishBlockHeight = FishManager.GetFedWithFishBlockHeight(mother).AsBigInteger();
BigInteger indexPredator = -1;
// zero means carnivorous
// if has been more than 20 blocks since last time the father eat a fish
if (fatherFishType[0] == 0 && currentBlockHeight - fathersFedWithFishBlockHeight > 20)
{
Runtime.Log("* The father is hungry");
indexPredator = indexFather;
}
else if (motherFishType[0] == 0 && currentBlockHeight - mothersFedWithFishBlockHeight > 20)
{
Runtime.Log("* The mother is hungry");
indexPredator = indexMother;
}
if (indexPredator > -1)
{
Runtime.Log("* It means that one of them is having a lunch");
byte[] predator = ListManager.GetAt(fishesAlive, FishManager.GetSize(), indexPredator);
BigInteger indexPrey = 0;
do
{
// get a random fish to be eaten, but a different fish of the father and the mother
aRandom = BlockchainHelper.Random(consensusData, randomStep);
randomStep = randomStep + 1;
indexPrey = aRandom % fishesAliveLength;
} while (indexPrey == indexMother || indexPrey == indexFather || indexPrey == newBornIndex);
// saving the last blockheight when fish was fed with fish
predator = FishManager.SetFedWithFishBlockHeight(predator, currentBlockHeight.AsByteArray());
fishesAlive = ListManager.EditAt(fishesAlive, FishManager.GetSize(), indexPredator, predator);
// saving the predator dna inside the prey
byte[] prey = ListManager.GetAt(fishesAlive, FishManager.GetSize(), indexPrey);
// removing the prey from alive list (after everything, to not lose the right position after removing)
fishesAlive = ListManager.RemoveAt(fishesAlive, FishManager.GetSize(), indexPrey);
fishesAliveLength = fishesAliveLength - 1;
byte[] fishesDead = ReefDao.GetReefFishesDead(reef); // fishes alive on the reef
fishesDead = ListManager.Add(fishesDead, prey);
ReefDao.UpdateReefFishesDead(reef, fishesDead);
Notifier.FishEaten(reef, prey, predator);
}
else
{
Runtime.Log("* The predators are not hungry");
}
}
else
{
Runtime.Log("* No deaths today");
}
}
else
{
Runtime.Log("* They are not in the mood");
}
}
Runtime.Log("* Let's go sleep");
fishesAlive = IncrementQuantityOfFeeds(fishesAlive, fishesAliveLength);
ReefDao.UpdateReefFishesAlive(reef, fishesAlive);
FishCoinDao.SetTotalSupply(balance - fishesAliveLength);
ReefDao.UpdateBlockHeightFedReef(reef, currentBlockHeight.AsByteArray());
BlockchainHelper.UpdateRandomStep(randomStep);
Runtime.Log("* End :)");
return("success");
}