Added BlockSpread, BlockForm and BlockFade events.

By: EvilSeph <evilseph@unaligned.org>

paper-api/src/main/java/org/bukkit/event/Event.java

@@ -376,6 +376,24 @@ public abstract class Event implements Serializable {
          * @see org.bukkit.event.block.SnowFormEvent
          */
         SNOW_FORM (Category.BLOCK),
+        /**
+         * Called when a block is formed based on world conditions
+         *
+         * @see org.bukkit.event.block.BlockFormEvent
+         */
+        BLOCK_FORM (Category.BLOCK),
+        /**
+         * Called when a block spreads based on world conditions
+         *
+         * @see org.bukkit.event.block.BlockSpreadEvent
+         */
+        BLOCK_SPREAD (Category.BLOCK),
+        /**
+         * Called when a block fades, melts or disappears based on world conditions
+         *
+         * @see org.bukkit.event.block.BlockFadeEvent
+         */
+        BLOCK_FADE (Category.BLOCK),
 
         /**
          * INVENTORY EVENTS

paper-api/src/main/java/org/bukkit/event/block/BlockFadeEvent.java

@@ -0,0 +1,48 @@
+package org.bukkit.event.block;
+
+import org.bukkit.Material;
+import org.bukkit.block.Block;
+import org.bukkit.block.BlockState;
+import org.bukkit.event.Cancellable;
+/**
+ *Called when a block fades, melts or disappears based on world conditions
+ */
+public class BlockFadeEvent extends BlockEvent implements Cancellable {
+    private boolean cancelled;
+    private BlockState newState;
+
+    public BlockFadeEvent(Block block, BlockState newState) {
+        super(Type.BLOCK_FADE, block);
+        this.newState = newState;
+        this.cancelled = false;
+    }
+
+    /**
+     * Gets the state of the block that will be fading
+     *
+     * @return the block state
+     */
+    public BlockState getNewState() {
+        return newState;
+    }
+
+    /**
+     * Gets the cancellation state of this event. A cancelled event will not
+     * be executed in the server, but will still pass to other plugins
+     *
+     * @return true if this event is cancelled
+     */
+    public boolean isCancelled() {
+        return cancelled;
+    }
+
+    /**
+     * Sets the cancellation state of this event. A cancelled event will not
+     * be executed in the server, but will still pass to other plugins
+     *
+     * @param cancel true if you wish to cancel snow from forming during a ice formation
+     */
+    public void setCancelled(boolean cancel) {
+        this.cancelled = cancel;
+    }
+}

paper-api/src/main/java/org/bukkit/event/block/BlockFormEvent.java

@@ -0,0 +1,56 @@
+package org.bukkit.event.block;
+
+import org.bukkit.Material;
+import org.bukkit.block.Block;
+import org.bukkit.block.BlockState;
+import org.bukkit.event.Cancellable;
+/**
+ * Called when a block is formed or spreads based on world conditions
+ */
+public class BlockFormEvent extends BlockEvent implements Cancellable {
+    private boolean cancelled;
+    private BlockState newState;
+
+    public BlockFormEvent(Block block, BlockState newState) {
+        super(Type.BLOCK_FORM, block);
+        this.block = block;
+        this.newState = newState;
+        this.cancelled = false;
+    }
+
+    public BlockFormEvent(Type type, Block block, BlockState newState) {
+        super(type, block);
+        this.block = block;
+        this.newState = newState;
+        this.cancelled = false;
+    }
+
+    /**
+     * Gets the state of the block where it will form or spread to
+     *
+     * @return the block state
+     */
+    public BlockState getNewState() {
+        return newState;
+    }
+
+    /**
+     * Gets the cancellation state of this event. A cancelled event will not
+     * be executed in the server, but will still pass to other plugins
+     *
+     * @return true if this event is cancelled
+     */
+    public boolean isCancelled() {
+        return cancelled;
+    }
+
+    /**
+     * Sets the cancellation state of this event. A cancelled event will not
+     * be executed in the server, but will still pass to other plugins
+     *
+     * @param cancel true if you wish to cancel snow from forming during a ice formation
+     */
+    public void setCancelled(boolean cancel) {
+        this.cancelled = cancel;
+    }
+}

paper-api/src/main/java/org/bukkit/event/block/BlockListener.java

@@ -103,9 +103,32 @@ public class BlockListener implements Listener {
      * Called when a world is attempting to place a block during a snowfall
      *
      * @param event Relevant event details
+     * @deprecated be prepared to use onBlockForm instead as it will be replacing this event after the RB
      */
+    @Deprecated
     public void onSnowForm(SnowFormEvent event) {}
 
+    /**
+     * Called when a block is formed based on world conditions
+     *
+     * @param event Relevant event details
+     */
+    public void onBlockForm(BlockFormEvent event) {}
+
+    /**
+     * Called when a block spreads based on world conditions
+     *
+     * @param event Relevant event details
+     */
+    public void onBlockSpread(BlockSpreadEvent event) {}
+
+    /**
+     * Called when a block fades, melts or disappears based on world conditions
+     *
+     * @param event Relevant event details
+     */
+    public void onBlockFade(BlockFadeEvent event) {}
+
     /**
      * Called when a block is dispensing an item
      *

paper-api/src/main/java/org/bukkit/event/block/BlockSpreadEvent.java

@@ -0,0 +1,25 @@
+package org.bukkit.event.block;
+
+import org.bukkit.Material;
+import org.bukkit.block.Block;
+import org.bukkit.block.BlockState;
+/**
+ *Represents any event that spreads blocks
+ */
+public class BlockSpreadEvent extends BlockFormEvent {
+    private Block source;
+
+    public BlockSpreadEvent(Block block, Block source, BlockState newState) {
+        super(Type.BLOCK_SPREAD, block, newState);
+        this.source = source;
+    }
+
+    /**
+     * Gets the source block
+     *
+     * @return the block state
+     */
+    public Block getSource() {
+        return source;
+    }
+}

paper-api/src/main/java/org/bukkit/plugin/java/JavaPluginLoader.java

@@ -490,6 +490,28 @@ public final class JavaPluginLoader implements PluginLoader {
                 }
             };
 
+        case BLOCK_FORM:
+            return new EventExecutor() {
+                public void execute(Listener listener, Event event) {
+                    ((BlockListener) listener).onBlockForm((BlockFormEvent) event);
+                }
+            };
+
+        case BLOCK_SPREAD:
+            return new EventExecutor() {
+                public void execute(Listener listener, Event event) {
+                    ((BlockListener) listener).onBlockSpread((BlockSpreadEvent) event);
+                }
+            };
+
+
+        case BLOCK_FADE:
+            return new EventExecutor() {
+                public void execute(Listener listener, Event event) {
+                    ((BlockListener) listener).onBlockFade((BlockFadeEvent) event);
+                }
+            };
+
         case BLOCK_DISPENSE:
             return new EventExecutor() {
                 public void execute(Listener listener, Event event) {