Implemented 0x12-ClientboundContainerSetContentPacket, 0x14-ClientboundContainerSetSlotPacket, implemented slot data codec

libmc-common/src/commonMain/kotlin/cn/rtast/libmc/primitives/Optional.kt

@@ -9,17 +9,8 @@ package cn.rtast.libmc.primitives
 
 import cn.rtast.libmc.network.BytesBuffer
 
-public inline fun <T> BytesBuffer.readOptional(block: BytesBuffer.() -> T): T? {
-    val hasData = this.readBoolean()
-    return if (hasData) block.invoke(this) else null
-}
+public inline fun <T> BytesBuffer.readOptional(condition: Boolean, block: BytesBuffer.() -> T): T? =
+    if (condition) block() else null
 
-/**
- * buffer.writeOptional(value.someValue) { writeBlockPos(it) }
- */
-public inline fun <T> BytesBuffer.writeOptional(value: T?, block: BytesBuffer.(T) -> Unit) {
-    if (value != null) {
-        this.writeBoolean(true)
-        block.invoke(this, value)
-    } else this.writeBoolean(false)
-}
+public inline fun <T> BytesBuffer.writeOptional(value: T?, block: BytesBuffer.(T) -> Unit): Unit =
+    if (value != null) block.invoke(this, value) else Unit

libmc-common/src/commonMain/kotlin/cn/rtast/libmc/primitives/Prefixed.kt

@@ -44,10 +44,7 @@ public fun BytesBuffer.writePrefixedStringArray(value: List<String>) {
 
 public inline fun <T> BytesBuffer.readPrefixed(reader: BytesBuffer.() -> T): List<T> {
     val count = this.readVarInt()
-    require(count in 0..4096) {
-        "Prefixed array count $count is invalid (expected 0..4096). " +
-                "Stream offset is corrupted. Check Heightmaps/NBT encoding."
-    }
+    require(count in 0..4096)
     val list = ArrayList<T>(count)
     repeat(count) { _ -> list.add(this.reader()) }
     return list