blockstate, more block events, command preprocess event.

Minecraft.Server.FourKit/Event/Player/PlayerCommandPreprocessEvent.cs

@@ -0,0 +1,53 @@
+namespace Minecraft.Server.FourKit.Event.Player;
+
+using Minecraft.Server.FourKit.Entity;
+
+/// <summary>
+/// Called early in the command handling process. This event is only for very
+/// exceptional cases and you should not normally use it.
+///
+/// <para>If a PlayerCommandPreprocessEvent is cancelled, the command will not
+/// be executed in the server, but will still pass to other plugins.</para>
+/// </summary>
+public class PlayerCommandPreprocessEvent : PlayerEvent, Cancellable
+{
+    private string _message;
+    private bool _cancel;
+
+    internal PlayerCommandPreprocessEvent(Player player, string message) : base(player)
+    {
+        _message = message;
+        _cancel = false;
+    }
+
+    /// <inheritdoc/>
+    public bool isCancelled() => _cancel;
+
+    /// <inheritdoc/>
+    public void setCancelled(bool cancel)
+    {
+        _cancel = cancel;
+    }
+
+    /// <summary>
+    /// Gets the command that the player is attempting to send. All commands
+    /// begin with a special character; implementations do not consider the
+    /// first character when executing the content.
+    /// </summary>
+    /// <returns>Message the player is attempting to send.</returns>
+    public string getMessage() => _message;
+
+    /// <summary>
+    /// Sets the command that the player will send. All commands begin with a
+    /// special character; implementations do not consider the first character
+    /// when executing the content.
+    /// </summary>
+    /// <param name="command">New message that the player will send.</param>
+    /// <exception cref="ArgumentException">If command is null or empty.</exception>
+    public void setMessage(string command)
+    {
+        if (string.IsNullOrEmpty(command))
+            throw new ArgumentException("Command may not be null or empty", nameof(command));
+        _message = command;
+    }
+}