.go

type Proboj interface {
	ReadPlayer(r io.Reader) interface{}
	ActPlayer(i int, turn interface{})
	WriteState(w io.Writer)
	Update()
}

func RunProboj(proboj Proboj, players []string) {
	turnChans := make([]chan interface{}, len(players))
	playerIns := make([]io.Writer, len(players))
	
	for i, player := range players {
		ch := make(chan interface{})
		cmd := exec.Command(player)
		in, out := cmd.StdinPipe(), cmd.StdoutPipe()
		
		cmd.Start()
		proboj.WriteState(in)
		
		go func() {
			for {
				ch <- proboj.ReadPlayer(out)
			}
		}()
		
		turnChans[i] = ch
		playerIns[i] = in
	}
	
	for {
		proboj.Update()
		for i := range turnChans {
			select {
			case turn := <-turnChans[i]:
				proboj.ActPlayer(i, turn)
				proboj.WriteState(playerIns[i])
			default: // zakomentovane je turn-based, inak real-time
			}
		}
	}
}