From 50c4227c42296516cba572def12b0d566ddafa5b Mon Sep 17 00:00:00 2001
From: Morphan1 <morphanone@gmail.com>
Date: Sun, 4 Jan 2015 10:30:07 -0500
Subject: [PATCH] Add dPlayer.open_book mech

---
 .../aufdemrand/denizen/objects/dPlayer.java   | 13 +++++++
 .../denizen/utilities/packets/OpenBook.java   | 38 +++++++++++++++++++
 2 files changed, 51 insertions(+)
 create mode 100644 src/main/java/net/aufdemrand/denizen/utilities/packets/OpenBook.java

diff --git a/src/main/java/net/aufdemrand/denizen/objects/dPlayer.java b/src/main/java/net/aufdemrand/denizen/objects/dPlayer.java
index 30aa01f691..77827a8810 100644
--- a/src/main/java/net/aufdemrand/denizen/objects/dPlayer.java
+++ b/src/main/java/net/aufdemrand/denizen/objects/dPlayer.java
@@ -2208,6 +2208,19 @@ else if (split.length > 1) {
             PlayerSpectateEntity.setSpectating(getPlayerEntity(), value.asType(dEntity.class).getBukkitEntity());
         }
 
+        // <--[mechanism]
+        // @object dPlayer
+        // @name open_book
+        // @input None
+        // @description
+        // Forces the player to open the written book in their hand.
+        // The book can safely be removed from the player's hand
+        // without the player closing the book.
+        // -->
+        if (mechanism.matches("open_book")) {
+            OpenBook.openBook(getPlayerEntity());
+        }
+
         // Iterate through this object's properties' mechanisms
         for (Property property : PropertyParser.getProperties(this)) {
             property.adjust(mechanism);
diff --git a/src/main/java/net/aufdemrand/denizen/utilities/packets/OpenBook.java b/src/main/java/net/aufdemrand/denizen/utilities/packets/OpenBook.java
new file mode 100644
index 0000000000..8e09f2aa35
--- /dev/null
+++ b/src/main/java/net/aufdemrand/denizen/utilities/packets/OpenBook.java
@@ -0,0 +1,38 @@
+package net.aufdemrand.denizen.utilities.packets;
+
+import io.netty.buffer.Unpooled;
+import net.aufdemrand.denizen.utilities.debugging.dB;
+import net.minecraft.server.v1_8_R1.PacketDataSerializer;
+import net.minecraft.server.v1_8_R1.PacketPlayOutCustomPayload;
+import org.bukkit.entity.Player;
+
+import java.lang.reflect.Field;
+import java.util.Map;
+
+public class OpenBook {
+
+    private static final Field channel, packet_data;
+
+    static {
+        Map<String, Field> fields = PacketHelper.registerFields(PacketPlayOutCustomPayload.class);
+        channel = fields.get("a");
+        packet_data = fields.get("b");
+    }
+
+    public static PacketPlayOutCustomPayload getOpenBookPacket() {
+        PacketPlayOutCustomPayload customPayloadPacket = new PacketPlayOutCustomPayload();
+        try {
+            channel.set(customPayloadPacket, "MC|BOpen");
+            packet_data.set(customPayloadPacket, new PacketDataSerializer(Unpooled.buffer()));
+        } catch (Exception e) {
+            dB.echoError(e);
+        }
+        return customPayloadPacket;
+    }
+
+    public static void openBook(Player player) {
+        PacketPlayOutCustomPayload customPayloadPacket = getOpenBookPacket();
+        PacketHelper.sendPacket(player, customPayloadPacket);
+    }
+
+}