#660: Add support to change block's lid state

By: jameslfc19 <jameslfc19@gmail.com>

paper-server/nms-patches/TileEntityShulkerBox.patch

@@ -1,6 +1,6 @@
 --- a/net/minecraft/server/TileEntityShulkerBox.java
 +++ b/net/minecraft/server/TileEntityShulkerBox.java
-@@ -3,6 +3,10 @@
+@@ -3,12 +3,16 @@
  import java.util.List;
  import java.util.stream.IntStream;
  import javax.annotation.Nullable;
@@ -11,13 +11,21 @@
  
  public class TileEntityShulkerBox extends TileEntityLootable implements IWorldInventory, ITickable {
  
-@@ -16,6 +20,36 @@
+     private static final int[] a = IntStream.range(0, 27).toArray();
+     private NonNullList<ItemStack> contents;
+-    private int c;
++    public int c; // PAIL private -> public, rename viewerCount
+     private TileEntityShulkerBox.AnimationPhase i;
+     private float j;
+     private float k;
+@@ -16,6 +20,37 @@
      private EnumColor l;
      private boolean m;
  
 +    // CraftBukkit start - add fields and methods
 +    public List<HumanEntity> transaction = new java.util.ArrayList<HumanEntity>();
 +    private int maxStack = MAX_STACK;
++    public boolean opened;
 +
 +    public List<ItemStack> getContents() {
 +        return this.contents;
@@ -48,3 +56,19 @@
      public TileEntityShulkerBox(@Nullable EnumColor enumcolor) {
          super(TileEntityTypes.SHULKER_BOX);
          this.contents = NonNullList.a(27, ItemStack.b);
+@@ -178,6 +213,7 @@
+             }
+ 
+             ++this.c;
++            if (opened) return; // CraftBukkit - only animate if the ShulkerBox hasn't been forced open already by an API call.
+             this.world.playBlockAction(this.position, this.getBlock().getBlock(), 1, this.c);
+             if (this.c == 1) {
+                 this.world.playSound((EntityHuman) null, this.position, SoundEffects.BLOCK_SHULKER_BOX_OPEN, SoundCategory.BLOCKS, 0.5F, this.world.random.nextFloat() * 0.1F + 0.9F);
+@@ -190,6 +226,7 @@
+     public void closeContainer(EntityHuman entityhuman) {
+         if (!entityhuman.isSpectator()) {
+             --this.c;
++            if (opened) return; // CraftBukkit - only animate if the ShulkerBox hasn't been forced open already by an API call.
+             this.world.playBlockAction(this.position, this.getBlock().getBlock(), 1, this.c);
+             if (this.c <= 0) {
+                 this.world.playSound((EntityHuman) null, this.position, SoundEffects.BLOCK_SHULKER_BOX_CLOSE, SoundCategory.BLOCKS, 0.5F, this.world.random.nextFloat() * 0.1F + 0.9F);