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-rw-r--r--src/main/kotlin/moe/nea/ledger/ItemChange.kt6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/main/kotlin/moe/nea/ledger/ItemChange.kt b/src/main/kotlin/moe/nea/ledger/ItemChange.kt
index 834cd2b..186a4e3 100644
--- a/src/main/kotlin/moe/nea/ledger/ItemChange.kt
+++ b/src/main/kotlin/moe/nea/ledger/ItemChange.kt
@@ -54,6 +54,12 @@ data class ItemChange(
return gain(ItemId.COINS, number)
}
+ fun unpair(direction: ChangeDirection, pair: Pair<ItemId, Double>): ItemChange {
+ return ItemChange(pair.first, pair.second, direction)
+ }
+
+ fun unpairGain(pair: Pair<ItemId, Double>) = unpair(ChangeDirection.GAINED, pair)
+
fun gain(itemId: ItemId, amount: Number): ItemChange {
return ItemChange(itemId, amount.toDouble(), ChangeDirection.GAINED)
}