Fact.kt

Branches > main > e39f879 > files / src / main / kotlin / net / bowmap / stormbow / fact / Fact.kt

package net.bowmap.stormbow.fact

import kotlinx.collections.immutable.*
import net.bowmap.stormbow.effect.Effect
import net.bowmap.stormbow.registry

// Fact is a thing that happened (immutable)
// And they can be created by the user just fine which is good

interface Fact

// Can be empty, of course
fun handle(fact: Fact): PersistentList<Effect> {
  var effects: PersistentList<Effect> = persistentListOf()
  registry[fact::class]?.forEach { handler ->
    effects = effects.addingAll(handler(fact))
  }
  return effects
}