SPIGOT-1816: Rework drop capture.

By: md_5 <git@md-5.net>

paper-server/nms-patches/EntityInsentient.patch

@@ -64,28 +64,7 @@
      }
  
      public boolean d(Class<? extends EntityLiving> oclass) {
-@@ -225,6 +267,7 @@
-         return null;
-     }
- 
-+    protected ItemStack headDrop = null; // CraftBukkit
-     protected void dropDeathLoot(boolean flag, int i) {
-         Item item = this.getLoot();
- 
-@@ -240,6 +283,12 @@
-             }
-         }
- 
-+        // CraftBukkit start
-+        if (headDrop != null) {
-+            this.a(headDrop, 0.0F);
-+            headDrop = null;
-+        }
-+        // CraftBukkit end
-     }
- 
-     public void b(NBTTagCompound nbttagcompound) {
-@@ -321,11 +370,20 @@
+@@ -321,11 +363,20 @@
  
      public void a(NBTTagCompound nbttagcompound) {
          super.a(nbttagcompound);
@@ -108,16 +87,7 @@
          NBTTagList nbttaglist;
          int i;
  
-@@ -406,7 +464,7 @@
-             }
- 
-             this.dropEquipment(flag, i);
--        } else {
-+        } { // CraftBukkit - remove else
-             super.a(flag, i, damagesource);
-         }
- 
-@@ -549,11 +607,11 @@
+@@ -549,11 +600,11 @@
                  double d2 = entityhuman.locZ - this.locZ;
                  double d3 = d0 * d0 + d1 * d1 + d2 * d2;
  
@@ -131,7 +101,7 @@
                      this.die();
                  } else if (d3 < 1024.0D) {
                      this.ticksFarFromPlayer = 0;
-@@ -931,9 +989,21 @@
+@@ -931,9 +982,21 @@
  
      public final boolean a(EntityHuman entityhuman, ItemStack itemstack, EnumHand enumhand) {
          if (this.isLeashed() && this.getLeashHolder() == entityhuman) {
@@ -153,7 +123,7 @@
              this.setLeashHolder(entityhuman, true);
              --itemstack.count;
              return true;
-@@ -953,10 +1023,12 @@
+@@ -953,10 +1016,12 @@
  
          if (this.bC) {
              if (!this.isAlive()) {
@@ -166,7 +136,7 @@
                  this.unleash(true, true);
              }
          }
-@@ -1037,6 +1109,7 @@
+@@ -1037,6 +1102,7 @@
  
                  this.leashHolder = entityleash;
              } else {