Retrofit Door in order to work with modern Minecraft doors.

By: Xor Boole <mcyoung@mit.edu>

paper-api/src/main/java/org/bukkit/Material.java

@@ -255,12 +255,12 @@ public enum Material {
     BIRCH_FENCE(189),
     JUNGLE_FENCE(190),
     DARK_OAK_FENCE(191),
-    ACACIA_FENCE(192),
-    SPRUCE_DOOR(193),
-    BIRCH_DOOR(194),
-    JUNGLE_DOOR(195),
-    ACACIA_DOOR(196),
-    DARK_OAK_DOOR(197),
+    ACACIA_FENCE(192, Door.class),
+    SPRUCE_DOOR(193, Door.class),
+    BIRCH_DOOR(194, Door.class),
+    JUNGLE_DOOR(195, Door.class),
+    ACACIA_DOOR(196, Door.class),
+    DARK_OAK_DOOR(197, Door.class),
     // ----- Item Separator -----
     IRON_SPADE(256, 1, 250),
     IRON_PICKAXE(257, 1, 250),

paper-api/src/main/java/org/bukkit/material/Door.java

@@ -6,10 +6,19 @@ import org.bukkit.block.BlockFace;
 /**
  * Represents a door.
  *
- * @deprecated No longer functions. Do not use.
+ * This class was previously deprecated, but has been retrofitted to
+ * work with modern doors. Some methods are undefined dependant on <code>isTopHalf()</code>
+ * due to Minecraft's internal representation of doors.
+ */
+public class Door extends MaterialData implements Directional, Openable {
+
+    // This class breaks API contracts on Directional and Openable because
+    // of the way doors are currently implemented. Beware!
+
+    /**
+     * @deprecated Artifact of old API, equivalent to new <code>Door(Material.WOODEN_DOOR);</code>
      */
     @Deprecated
-public class Door extends MaterialData implements Directional, Openable {
     public Door() {
         super(Material.WOODEN_DOOR);
     }
@@ -48,17 +57,15 @@ public class Door extends MaterialData implements Directional, Openable {
     }
 
     /**
-     * @deprecated Does not work (correctly) anymore
+     * Result is undefined if <code>isTopHalf()</code> is true.
      */
-    @Deprecated
     public boolean isOpen() {
         return ((getData() & 0x4) == 0x4);
     }
 
     /**
-     * @deprecated Does not work (correctly) anymore
+     * Set whether the door is open. Undefined if <code>isTopHalf()</code> is true.
      */
-    @Deprecated
     public void setOpen(boolean isOpen) {
         setData((byte) (isOpen ? (getData() | 0x4) : (getData() & ~0x4)));
     }
@@ -74,30 +81,18 @@ public class Door extends MaterialData implements Directional, Openable {
      * Configure this part of the door to be either the top or the bottom half
      *
      * @param isTopHalf True to make it the top half.
-     * @deprecated Shouldn't be used anymore
      */
-    @Deprecated
     public void setTopHalf(boolean isTopHalf) {
         setData((byte) (isTopHalf ? (getData() | 0x8) : (getData() & ~0x8)));
     }
 
     /**
      * @return BlockFace.SELF
-     * @deprecated Does not work (correctly) anymore
+     * @deprecated This method should not be used; use hinge and facing accessors instead.
      */
     @Deprecated
     public BlockFace getHingeCorner() {
-        byte d = getData();
-
-        if ((d & 0x3) == 0x3) {
-            return BlockFace.NORTH_WEST;
-        } else if ((d & 0x1) == 0x1) {
-            return BlockFace.SOUTH_EAST;
-        } else if ((d & 0x2) == 0x2) {
-            return BlockFace.SOUTH_WEST;
-        }
-
-        return BlockFace.NORTH_EAST;
+        return BlockFace.SELF;
     }
 
     @Override
@@ -108,13 +103,17 @@ public class Door extends MaterialData implements Directional, Openable {
     /**
      * Set the direction that this door should is facing.
      *
+     * Undefined if <code>isTopHalf()</code> is true.
+     *
      * @param face the direction
-     * @deprecated Does not work (correctly) anymore
      */
-    @Deprecated
     public void setFacingDirection(BlockFace face) {
         byte data = (byte) (getData() & 0x12);
         switch (face) {
+        case WEST:
+            data |= 0x0;
+            break;
+
         case NORTH:
             data |= 0x1;
             break;
@@ -133,10 +132,10 @@ public class Door extends MaterialData implements Directional, Openable {
     /**
      * Get the direction that this door is facing.
      *
+     * Undefined if <code>isTopHalf()</code> is true.
+     *
      * @return the direction
-     * @deprecated Does not work (correctly) anymore
      */
-    @Deprecated
     public BlockFace getFacing() {
         byte data = (byte) (getData() & 0x3);
         switch (data) {
@@ -155,6 +154,26 @@ public class Door extends MaterialData implements Directional, Openable {
         return null; // shouldn't happen
     }
 
+    /**
+     * Returns the side of the door the hinge is on.
+     *
+     * Undefined if <code>isTopHalf()</code> is false.
+     *
+     * @return false for left hinge, true for right hinge
+     */
+    public boolean getHinge() {
+        return (getData() & 0x1) == 1;
+    }
+
+    /**
+     * Set whether the hinge is on the left or right side. Left is false, right is true.
+     *
+     * Undefined if <code>isTopHalf()</code> is false.
+     */
+    public void setHinge(boolean hinge) {
+        setData((byte) (hinge ? (getData() | 0x1) : (getData() & ~0x1)));
+    }
+
     @Override
     public Door clone() {
         return (Door) super.clone();