X-Git-Url: http://deadsoftware.ru/gitweb?a=blobdiff_plain;f=core%2Fsrc%2Fru%2Fdeadsoftware%2Fcavedroid%2Fgame%2Fmodel%2Fitem%2FInventoryItem.kt;h=f847f7d0e3dd4d1f19ed91ee37266d3355a218c0;hb=3d972278cf3a54b6a7b574690ca4b41577464dce;hp=44d3179839d2507e2f42dbcc33d0117c645d777d;hpb=cb0605053ce3de493b0d1f43cd7ec1e4a9cf0ac5;p=cavedroid.git

diff --git a/core/src/ru/deadsoftware/cavedroid/game/model/item/InventoryItem.kt b/core/src/ru/deadsoftware/cavedroid/game/model/item/InventoryItem.kt
index 44d3179..f847f7d 100644
--- a/core/src/ru/deadsoftware/cavedroid/game/model/item/InventoryItem.kt
+++ b/core/src/ru/deadsoftware/cavedroid/game/model/item/InventoryItem.kt
@@ -10,6 +10,8 @@ import ru.deadsoftware.cavedroid.misc.utils.drawSprite
 import ru.deadsoftware.cavedroid.misc.utils.drawString
 import ru.deadsoftware.cavedroid.misc.utils.px
 import java.io.Serializable
+import kotlin.contracts.ExperimentalContracts
+import kotlin.contracts.contract
 
 class InventoryItem @JvmOverloads constructor(
     val itemKey: String,
@@ -123,6 +125,11 @@ class InventoryItem @JvmOverloads constructor(
     }
 
     companion object {
-        fun InventoryItem?.isNoneOrNull() = this?.item == null || this.item.isNone()
+
+        @OptIn(ExperimentalContracts::class)
+        fun InventoryItem?.isNoneOrNull(): Boolean {
+            contract { returns(false) implies(this@isNoneOrNull != null) }
+            return this?.item == null || this.item.isNone()
+        }
     }
 }