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SCORE Methods

Let us go through some of the SCORE methods used in Dice game so that we can figure out what actually happens when we make a call to them.

Eventlog Methods

Eventlogs are dummy methods without any body. They are used to provide information about the output of the transaction through their arguments. They are called within SCORE codes during the execution of a transaction to include custom event logs in its TxResult as event logs.
FundTransfer Eventlog
This method is used to show any transfer of ICX inside the SCORE.
@eventlog(indexed=2)
def FundTransfer(self, recipient: Address, amount: int, note: str):
pass
PayoutAmount Eventlog
This method is used to provide the payout information in case the player wins.
@eventlog(indexed=3)
def PayoutAmount(self, payout: int, main_bet_payout: int, side_bet_payout: int):
pass
BetResult Eventlog
This method is used to provide the number the dice will come up with after placing a bet.
@eventlog(indexed=1)
def BetResult(self, spin: str, winningNumber: int):
pass

External Methods

Methods decorated with @external can be called from outside the contract. Basically a call to these methods
toggle_game_status Method
This method is used to turn the game on and off.
Only the SCORE owner can make this method call
@external
def toggle_game_status(self) -> None:
if self.msg.sender != self.owner:
revert('Only the owner can call the toggle_game_status method')
self._game_on.set(not self._game_on.get() )

Payable Methods

Methods decorated with @payable are permitted to receive incoming ICX.
call_bet Method
This method is used to place your bet for playing the game.
Method definition:-
@payable
@external
def call_bet(self, upper: int, lower: int, user_seed: str = '', side_bet_amount: int = 0,
side_bet_type: str = '') -> None:

Readonly Methods

Methods decorated with @external(readonly=True) will have read-only access to the state database. They are used to provide the required contract information.
No transaction is performed while calling readonly methods
get_game_status Method
This method is used to get the status of the game.
@external(readonly=True)
def get_game_status(self) -> bool:
return self._game_on.get()
Methods that we will be using in our Jupyter Notebook file are:-
  • toggle_game_status
  • get_game_status
  • call_bet