impl HashedSlot

libmc-protocol/src/commonMain/kotlin/cn/rtast/libmc/protocol/protocol/game/item/slot/HashedSlot.kt

@@ -7,3 +7,42 @@
 
 package cn.rtast.libmc.protocol.protocol.game.item.slot
 
+import cn.rtast.libmc.network.BytesBuffer
+import cn.rtast.libmc.primitives.readOptional
+import cn.rtast.libmc.primitives.readPrefixed
+import cn.rtast.libmc.primitives.readVarInt
+
+public data class HashedSlot(
+    val hasItem: Boolean,
+    val itemId: Int?,
+    val itemCount: Int?,
+    val componentsToAdd: List<HashedSlotComponent>?,
+    val componentsToRemove: List<Int>?,
+) {
+    public data class HashedSlotComponent(
+        val componentId: Int,
+        /**
+         * CRC32C
+         */
+        val hash: Int,
+    )
+
+    public companion object {
+        public val EMPTY: HashedSlot = HashedSlot(false, null, null, emptyList(), emptyList())
+    }
+}
+
+internal fun BytesBuffer.readHashedSlot(): HashedSlot {
+    val hasItem = readBoolean()
+    val itemId = readOptional(hasItem) { readVarInt() }
+    val itemCount = readOptional(hasItem) { readVarInt() }
+    val componentsToAdd = readOptional(hasItem) {
+        readPrefixed {
+            val componentId = readVarInt()
+            val hash = readInt()
+            HashedSlot.HashedSlotComponent(componentId, hash)
+        }
+    }
+    val componentsToRemove = readOptional(hasItem) { readPrefixed { readVarInt() } }
+    return HashedSlot(hasItem, itemId, itemCount, componentsToAdd, componentsToRemove)
+}