API Reference

Index
Constructors
​
Description
Constructors
Oracle vrf initialization
​
Functions
​
Description
randomnessRequest
Make a request to generate random numbers
fulfillRandomness
VRF Oracle will call back when receiving valid VRF proof data
Constructors
1
constructor (address _oraiToken, address _oracle) public {
2
    fee = 1000000000000000000;
3
    orai = _oraiToken;
4
    oracle = _oracle;
5
}
Copied!
Funtions
randomnessRequest
1
function randomnessRequest(uint256 _seed, bytes memory _data) public returns (bytes32 reqId);
Copied!
_seed : a random number provided by the caller
_data : the result of callbackAddress and callbackFunc after encoding
1
bytes memory data = abi.encode(address(this), this.fulfillRandomness.selector);
Copied!
callbackAddress: smart contract address receive random number
callbackFunct : hen a function is called, the first 4 bytes of calldata specifies which function to call.
fulfillRandomness
​
1
function fulfillRandomness(bytes32 reqId, bytes calldata _data, uint8 v, bytes32 r, bytes32 s) external;
Copied!
reqId: request id generated when calling function randomnessRequest
_data: includes callbackAddress and callbackFunc after encode
v,r,s: proof vrf
​
​

VRF - Previous

Get a Random Number

Next - VRF

Contract

Last modified 3mo ago

Copy link

Contents

Index

Constructors

Funtions