SPIGOT-1994: Revert collisions to Vanilla behaviour

nms-patches/EntityLiving.patch

@@ -528,21 +528,7 @@
              this.setFlag(7, flag);
          }
  
-@@ -1749,6 +2008,13 @@
+@@ -1824,11 +2083,11 @@
-         if (!list.isEmpty()) {
-             for (int i = 0; i < list.size(); ++i) {
-                 Entity entity = (Entity) list.get(i);
-+                // TODO better check now?
-+                // CraftBukkit start - Only handle mob (non-player) collisions every other tick
-+                if (entity instanceof EntityLiving && !(this instanceof EntityPlayer) && this.ticksLived % 2 == 0) {
-+                    continue;
-+                }
-+                // CraftBukkit end
-+
- 
-                 this.C(entity);
-             }
-@@ -1824,11 +2090,11 @@
      }
  
      public boolean isInteractable() {
@@ -556,7 +542,7 @@
      }
  
      protected void ap() {
-@@ -1965,7 +2231,22 @@
+@@ -1965,7 +2224,22 @@
      protected void v() {
          if (this.bo != null && this.cx()) {
              this.a(this.bo, 16);
@@ -580,7 +566,7 @@
  
              if (itemstack != null && itemstack.count == 0) {
                  itemstack = null;
-@@ -2051,10 +2332,18 @@
+@@ -2051,10 +2325,18 @@
              }
  
              if (flag1) {