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/*
 * FXGL - JavaFX Game Library. The MIT License (MIT).
 * Copyright (c) AlmasB ([email protected]).
 * See LICENSE for details.
 */

package com.almasb.fxgl.entity

import java.util.*

/**
 *
 * @author Almas Baimagambetov ([email protected])
 */
internal class EntityPool {

    private val pool = hashMapOf>()

    fun put(spawnName: String, entity: Entity) {
        var queue: Deque? = pool[spawnName]

        if (queue == null) {
            queue = ArrayDeque()

            pool[spawnName] = queue
        }

        queue.addLast(entity)
    }

    fun take(spawnName: String): Entity? {
        val queue: Deque? = pool[spawnName]

        if (queue != null && queue.isNotEmpty()) {
            return queue.removeFirst()
        }

        return null
    }
}