OpenSpiel Random Game Benchmark Swift

benchmark_swift_openspiel.swift

// Build with with `-O` and `Whole Module optimization` flags

import Dispatch
import Foundation
import OpenSpiel

func playRandomGame<T: GameProtocol>(_ game: T) {
  var state = game.initialState
  while !state.isTerminal {
    state.apply(state.legalActions.randomElement()!)
  }
}

let game = TicTacToe()
let n: Int = 1000
let start = DispatchTime.now()
for _ in 1...n {
    playRandomGame(game)
}
let timeDiff = Double(DispatchTime.now().uptimeNanoseconds - start.uptimeNanoseconds) / Double(n)
print("Mean Random Game Time (μs): \(timeDiff / 1e3)")