Added the single most important event ever to be conceived

By: Dinnerbone <dinnerbone@dinnerbone.com>

paper-api/src/org/bukkit/event/block/BlockEvent.java

@@ -0,0 +1,13 @@
+
+package org.bukkit.event.block;
+
+import org.bukkit.event.Event;
+
+/**
+ * Represents a block related event
+ */
+public class BlockEvent extends Event {
+    public BlockEvent(final Event.Type type) {
+        super(type);
+    }
+}

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

@@ -0,0 +1,15 @@
+
+package org.bukkit.event.block;
+
+import org.bukkit.event.Listener;
+
+/**
+ * Handles all events thrown in relation to Blocks
+ */
+public class BlockListener implements Listener {
+    public BlockListener() {
+    }
+
+    public void onPhysics(BlockPhysicsEvent event) {
+    }
+}

paper-api/src/org/bukkit/event/block/BlockPhysicsEvent.java

@@ -0,0 +1,47 @@
+
+package org.bukkit.event.block;
+
+import org.bukkit.Block;
+import org.bukkit.ItemStack;
+import org.bukkit.event.Event;
+
+/**
+ * Thrown when a block physics check is called
+ */
+public class BlockPhysicsEvent extends BlockEvent {
+    private final Block block;
+    private final int changed;
+
+    public BlockPhysicsEvent(final Event.Type type, final Block block, final int changed) {
+        super(type);
+        this.block = block;
+        this.changed = changed;
+    }
+
+    /**
+     * Gets the block currently undergoing a physics check
+     * 
+     * @return Block to check physics on
+     */
+    public Block getBlock() {
+        return block;
+    }
+
+    /**
+     * Gets the type of block that changed, causing this event
+     *
+     * @return Changed block's type ID
+     */
+    public int getChangedTypeID() {
+        return changed;
+    }
+
+    /**
+     * Gets the type of block that changed, causing this event
+     *
+     * @return Changed block's type
+     */
+    public ItemStack.Type getChangedType() {
+        return ItemStack.Type.getType(changed); // TODO: Move type to its own file
+    }
+}