def _rollANumber():
blockHash = GetCurrentBlockHash()
tx = GetScriptContainer()
txhash = GetTransactionHash(tx)
theNumber = abs(blockHash ^ txhash) % 100
theNumber = Add(abs(theNumber), 1)
return theNumber
def main(Height):
Block = GetBlock(Height)
index = 0
Tx = GetTransactionByIndex(Block, index)
Txhash = GetTransactionHash(Tx)
NewTx = GetTransactionByHash(Txhash)
BlkHash = GetBlockHash(Block)
print("all done")
def getExplodePoint():
"""
:return: a random number in the range of 1 to 1 000 000
"""
blockHash = GetCurrentBlockHash()
tx = GetScriptContainer()
txhash = GetTransactionHash(tx)
randomNumber = abs(blockHash ^ txhash) % 1000000
explodePoint = Add(abs(randomNumber), 1)
return explodePoint
def random(min,max,salt):# min>=x and x<=max
txid = GetTransactionHash(GetScriptContainer())
blockTime = GetTime()
blockHash = GetCurrentBlockHash()
sysseed = [txid,blockHash, salt, blockTime]
sysseed = sha256(Serialize(sysseed))
res = abs(sysseed)
number = res % (max-min+1)
number = number + min
return number
def callOracle(date):
_require(CheckWitness(operaterAddress) or CheckWitness(adminAddress))
req = getOracleReq(date)
key = _concatKey(OraclePrefix, date)
txhash = GetTransactionHash(GetScriptContainer())
Put(ctx, key, txhash)
oracleContract('CreateOracleRequest', [req, selfAddr])
Notify([txhash])
return True
def GeneratorRandom(id):
txid = GetTransactionHash(GetScriptContainer())
blockHeigt = GetHeight() + 1
blockTime = GetTime()
blockHash = GetCurrentBlockHash()
sysseed = [0, id, blockHeigt, blockTime, blockHash]
sysseed = sha256(Serialize(sysseed))
resseed = sha256(Serialize([txid, sysseed]))
resseed = sha256(Serialize([resseed, resseed]))
res = abs(resseed)
number = res % 100
number = number + 1
return number
def CreateOracleRequest(request, address):
#check witness
RequireWitness(address)
fee = Get(GetContext(), Fee)
#transfer ong to oracle Admin address
res = TransferONG(address, Admin, fee)
Require(res)
#get transaction hash
txHash = GetTransactionHash(GetScriptContainer())
#update undoRequestMap
undoRequestMap = GetUndoRequestMap()
undoRequestMap[txHash] = request
b = Serialize(undoRequestMap)
Put(GetContext(), UndoRequestKey, b)
Notify(["createOracleRequest", request, address])
return True
def sendReqToOracle(jsonIndex):
"""
call oracle to get format or info of Games, including the gameId, diskId
"""
RequireWitness(Operater)
req = getOracleReq(jsonIndex)
txhash = GetTransactionHash(GetScriptContainer())
if Get(GetContext(), concatKey(SENTREQHASH_FORMGAME_PREFIX, jsonIndex)):
Put(GetContext(), concatKey(SENTREQHASH_SAVERES_PREFIX, jsonIndex),
txhash)
else:
Put(GetContext(), concatKey(SENTREQHASH_FORMGAME_PREFIX, jsonIndex),
txhash)
res = OracleContract('CreateOracleRequest', [req, Operater])
# if res == False:
# Notify(['callOracle failed'])
# return False
Notify(["sendReqToOracle", txhash, res])
return True
def _getRandomNumber(interval):
blockHash = GetCurrentBlockHash()
tx = GetScriptContainer()
txhash = GetTransactionHash(tx)
randomNumber = abs(blockHash ^ txhash) % Add(interval, 1)
return randomNumber