582e1877b8
SpanWriter now has an argument that allows it to be resizable.
```cs
public SpanWriter(Span<byte> initialBuffer, bool resize = false)
public SpanWriter(int initialCapacity, bool resize = false)
```
If a SpanWriter is set to be resizable, or given an initial capacity instead of a buffer, it must be disposed:
```cs
public static void SomeMethod()
{
using var writer = new SpanWriter(stackalloc byte[512], true);
// stuff
// Automatic Dispose of writer
}
```
This is because the SpanWriter uses `ArrayPool<byte>.Shared` _rented buffers_ to resize. If the writer is not disposed, those buffers will never be reused resulting in a _memory leak_.
It is possible that the SpanWriter will outright ditch the initial buffer if resize is set to true and growing is needed. To check/account for that we can do the following:
```cs
public static void SomeMethod()
{
Span<byte> span = stackalloc byte[512];
using var writer = new SpanWriter(span, true);
// write some stuff that causes the span to grow
span = writer.RawBuffer;
// Do stuff with the span
}
```
Make sure you don't accidentally `Dispose()` the writer or use the `RawBuffer` outside of the `using` block. If you do, bad things will happen! (NullPointerException, or a fresh SpanWriter with no buffer, depending on the situation).
SpanWriter can also now be used with a fixed statement since it has a `PinnableReference()` function.
54 lines
1.5 KiB
C#
54 lines
1.5 KiB
C#
using Server.Mobiles;
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namespace Server.Items
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{
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public class SandMiningBook : Item
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{
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[Constructible]
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public SandMiningBook() : base(0xFF4) => Weight = 1.0;
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public SandMiningBook(Serial serial) : base(serial)
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{
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}
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public override string DefaultName => "Find Glass-Quality Sand";
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public override void Serialize(IGenericWriter writer)
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{
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base.Serialize(writer);
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writer.Write(0); // version
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}
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public override void Deserialize(IGenericReader reader)
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{
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base.Deserialize(reader);
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var version = reader.ReadInt();
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}
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public override void OnDoubleClick(Mobile from)
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{
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if (!IsChildOf(from.Backpack))
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{
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from.SendLocalizedMessage(1042001); // That must be in your pack for you to use it.
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}
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else if (from is not PlayerMobile pm || from.Skills.Mining.Base < 100.0)
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{
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from.SendMessage("Only a Grandmaster Miner can learn from this book.");
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}
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else if (pm.SandMining)
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{
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from.SendMessage("You have already learned this information.");
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}
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else
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{
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pm.SandMining = true;
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from.SendMessage(
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"You have learned how to mine fine sand. Target sand areas when mining to look for fine sand."
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);
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Delete();
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}
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}
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}
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}
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