SortingCentre.kt

import kotlinx.coroutines.*
import java.util.Objects

class SortingCentre(
    val loadingPortsAmount: Int = 1,
    val unloadingPortsAmount: Int = 3
) {
    class FirstLoadingPort: LoadingPort() {

    }

    class SecondLoadingPort: LoadingPort() {

    }

    fun unloading() {

    }
}

suspend fun startWork() = runBlocking {
    launch {
        val trucksForUnload = mutableListOf<Truck>()
        for (i in 0 until settings.totalUnloadTrucks) {
            trucksForUnload.add(TruckGenerator.randomTruck())
        }
    }
}

open class LoadingPort() {
    open fun loading(loadingProduct: Objects) {


    }
}

open class UnloadingPort() {
    open fun unloading() {

    }
}

TruckGenerator.kt

import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.channels.Channel
import kotlinx.coroutines.channels.produce
import kotlinx.coroutines.delay
import kotlinx.coroutines.launch
import kotlinx.coroutines.runBlocking
import kotlin.random.Random

object TruckGenerator {
    val channel = Channel<Truck>()

 /*   fun CoroutineScope.produceNumbers() = produce<Int> {
        var x = 1 // start from 1
        while (true) {
            send(x++) // produce next
            delay(100) // wait 0.1s
        }
    } */
    fun generator() = runBlocking {

        launch {
            channel.send(randomTruck())
        }

    }

    fun randomTruck(): Truck {
        var returnTruck: Truck
        returnTruck = when (Random.nextInt(0,2)) {
            0 -> TruckBig()
            1 -> TruckMedium()
            2 -> TruckSmall()
            else -> Truck(0)
        }
        return  returnTruck
    }

}