游戏Screeps - 找到过滤器和静态类型语言(Scala) - 如何正确的外观?

时间:2017-01-14 08:32:54

标签: javascript scala screeps

我正在尝试将JavaScript教程代码移植到Scala.js并停留在过滤结构上 - 任何建议都会受到赞赏。

原始代码:

// If creep is supposed to transfer energy to a structure
if (creep.memory.working == true) {

    // Find closest spawn, extension or tower which is not full
    var structure = creep.pos.findClosestByPath(FIND_MY_STRUCTURES, {
        filter: (s) => (s.structureType == STRUCTURE_SPAWN
        || s.structureType == STRUCTURE_EXTENSION
        || s.structureType == STRUCTURE_TOWER)
        && s.energy < s.energyCapacity });

Scala.js中的代码:

val structure = Option[Structure](creep.pos.findClosestByPath[Structure](FIND_MY_STRUCTURES,
FindFilter[Structure](structure => {
   (structure.structureType == STRUCTURE_SPAWN ||
    structure.structureType == STRUCTURE_EXTENSION ||
    structure.structureType == STRUCTURE_TOWER) &&
    structure.energy < structure.energyCapacity })))

问题是并非所有结构类型都有.energy所以这不会编译,尽管已过滤的结构有?

我尝试定义特征HasEnergy(类似于JavaScript接口)并使用它像FindFilter [HasEnergy结构],它编译,但现在我在运行时收到类型错误 - &gt; TypeError: a.k is not a function

My Facades看起来像这样:

@js.native
trait HasEnergy extends js.Object {
  val energy: Int
  val energyCapacity: Int
}

@js.native
trait Structure extends RoomObject with HasID {
  val hits: UndefOr[Int]
  val hitsMax: UndefOr[Int]
  val id: String
  val structureType: String
  def destroy(): Int
  def isActive(): Boolean
  def notifyWhenAttacked(enabled: Boolean): Int
}

1 个答案:

答案 0 :(得分:0)

好的,这是我提出的解决方案:

$newarray= array();
foreach ($tmparray as $value) {
    if (!in_array($value,$newarray)) {
        $newarray[ ] = $value;
    }
}
var_dump($newarray);

事实证明我的 findClosestByPath Facade中存在错误。每个API的正确版本支持 FindFilter FindFilterAlgorithm - 我的映射中缺少前者。正确的一个现在看起来像这样:

  val structure = {
    Option(creep.pos.findClosestByPath[OwnedStructureWithEnergy](FIND_MY_STRUCTURES, FindFilter[OwnedStructureWithEnergy](s =>
      ((s.structureType == STRUCTURE_SPAWN) ||
        (s.structureType == STRUCTURE_EXTENSION) ||
        (s.structureType == STRUCTURE_TOWER)) &&
        (s.energy < s.energyCapacity))))
  }

现在通过dot使用成员访问权限,我添加了特征 OwnedStructureWithEnergy

  def findClosestByPath[T](typ: Int, opts: FindFilter[T] | FindFilterAlgorithm[T] = ???): T
  @JSName("findClosestByPath")