blockstate, more block events, command preprocess event.

Minecraft.Server.FourKit/Event/Block/BlockSpreadEvent.cs

@@ -0,0 +1,32 @@
+namespace Minecraft.Server.FourKit.Event.Block;
+
+using Minecraft.Server.FourKit.Block;
+
+/// <summary>
+/// Called when a block spreads based on world conditions.
+/// Use <see cref="BlockFormEvent"/> to catch blocks that "randomly" form
+/// instead of actually spread.
+///
+/// <para>Examples:</para>
+/// <list type="bullet">
+///   <item><description>Mushrooms spreading.</description></item>
+///   <item><description>Fire spreading.</description></item>
+/// </list>
+///
+/// <para>If a Block Spread event is cancelled, the block will not spread.</para>
+/// </summary>
+public class BlockSpreadEvent : BlockFormEvent, Cancellable
+{
+    private readonly Block _source;
+
+    internal BlockSpreadEvent(Block block, Block source, BlockState newState) : base(block, newState)
+    {
+        _source = source;
+    }
+
+    /// <summary>
+    /// Gets the source block involved in this event.
+    /// </summary>
+    /// <returns>The Block for the source block involved in this event.</returns>
+    public Block getSource() => _source;
+}