This is a coin flipping game where you need to build up your winning streak by guessing the outcome of a coin flip. To complete this level you’ll need to use your psychic abilities to guess the correct outcome 10 times in a row.
Things that may help:
- Post conditions
cadence
pub contract Coinflip {
pub var consecutiveWins: UInt64
pub fun flip(guess: Bool) {
let currentBlockId: [UInt8; 32] = getCurrentBlock().id
var seed: UInt256 = 0
for byte in currentBlockId {
seed = seed + UInt256(byte)
}
let flip: UInt256 = seed % 2
let side: Bool = flip == 1 ? true : false
if side == guess {
self.consecutiveWins = self.consecutiveWins + 1
} else {
self.consecutiveWins = 0
}
}
init() {
self.consecutiveWins = 0
}
}