Paper/nms-patches/EntityItemFrame.patch

--- a/net/minecraft/server/EntityItemFrame.java
+++ b/net/minecraft/server/EntityItemFrame.java
@@ -52,15 +52,29 @@
     @Override
     protected void updateBoundingBox() {
         if (this.direction != null) {
+            // CraftBukkit start code moved in to calculateBoundingBox
+            this.a(calculateBoundingBox(this, this.blockPosition, this.direction, this.getHangingWidth(), this.getHangingHeight()));
+            // CraftBukkit end
+        }
+    }
+
+    // CraftBukkit start - break out BB calc into own method
+    public static AxisAlignedBB calculateBoundingBox(@Nullable Entity entity, BlockPosition blockPosition, EnumDirection direction, int width, int height) {
+        {
             double d0 = 0.46875D;
 
-            this.locX = (double) this.blockPosition.getX() + 0.5D - (double) this.direction.getAdjacentX() * 0.46875D;
-            this.locY = (double) this.blockPosition.getY() + 0.5D - (double) this.direction.getAdjacentY() * 0.46875D;
-            this.locZ = (double) this.blockPosition.getZ() + 0.5D - (double) this.direction.getAdjacentZ() * 0.46875D;
-            double d1 = (double) this.getHangingWidth();
-            double d2 = (double) this.getHangingHeight();
-            double d3 = (double) this.getHangingWidth();
-            EnumDirection.EnumAxis enumdirection_enumaxis = this.direction.k();
+            double locX = (double) blockPosition.getX() + 0.5D - (double) direction.getAdjacentX() * 0.46875D;
+            double locY = (double) blockPosition.getY() + 0.5D - (double) direction.getAdjacentY() * 0.46875D;
+            double locZ = (double) blockPosition.getZ() + 0.5D - (double) direction.getAdjacentZ() * 0.46875D;
+            if (entity != null) {
+                entity.locX = locX;
+                entity.locY = locY;
+                entity.locZ = locZ;
+            }
+            double d1 = (double) width;
+            double d2 = (double) height;
+            double d3 = (double) width;
+            EnumDirection.EnumAxis enumdirection_enumaxis = direction.k();
 
             switch (enumdirection_enumaxis) {
                 case X:
@@ -76,9 +90,10 @@
             d1 /= 32.0D;
             d2 /= 32.0D;
             d3 /= 32.0D;
-            this.a(new AxisAlignedBB(this.locX - d1, this.locY - d2, this.locZ - d3, this.locX + d1, this.locY + d2, this.locZ + d3));
+            return new AxisAlignedBB(locX - d1, locY - d2, locZ - d3, locX + d1, locY + d2, locZ + d3);
         }
     }
+    // CraftBukkit end
 
     @Override
     public boolean survives() {
@@ -108,6 +123,11 @@
             return false;
         } else if (!damagesource.isExplosion() && !this.getItem().isEmpty()) {
             if (!this.world.isClientSide) {
+                // CraftBukkit start - fire EntityDamageEvent
+                if (org.bukkit.craftbukkit.event.CraftEventFactory.handleNonLivingEntityDamageEvent(this, damagesource, f, false) || this.dead) {
+                    return true;
+                }
+                // CraftBukkit end
                 this.b(damagesource.getEntity(), false);
                 this.a(SoundEffects.ENTITY_ITEM_FRAME_REMOVE_ITEM, 1.0F, 1.0F);
             }
@@ -193,6 +213,12 @@
     }
 
     public void setItem(ItemStack itemstack, boolean flag) {
+        // CraftBukkit start
+        this.setItem(itemstack, flag, true);
+    }
+
+    public void setItem(ItemStack itemstack, boolean flag, boolean playSound) {
+        // CraftBukkit end
         if (!itemstack.isEmpty()) {
             itemstack = itemstack.cloneItemStack();
             itemstack.setCount(1);
@@ -200,7 +226,7 @@
         }
 
         this.getDataWatcher().set(EntityItemFrame.ITEM, itemstack);
-        if (!itemstack.isEmpty()) {
+        if (!itemstack.isEmpty() && playSound) { // CraftBukkit
             this.a(SoundEffects.ENTITY_ITEM_FRAME_ADD_ITEM, 1.0F, 1.0F);
         }