Check for valid entities on load stage

patches/net/minecraft/world/World.java.patch

@@ -1209,7 +1209,15 @@
                  ++i;
              }
          }
-@@ -3314,8 +3971,17 @@
+@@ -3298,6 +3955,7 @@
+         for (int i = 0; i < p_72868_1_.size(); ++i)
+         {
+             Entity entity = (Entity)p_72868_1_.get(i);
++            if (!entity.entityAllowedToSpawn()) continue;
+             if (!MinecraftForge.EVENT_BUS.post(new EntityJoinWorldEvent(entity, this)))
+             {
+                 loadedEntityList.add(entity);
+@@ -3314,8 +3972,17 @@
      public boolean canPlaceEntityOnSide(Block p_147472_1_, int p_147472_2_, int p_147472_3_, int p_147472_4_, boolean p_147472_5_, int p_147472_6_, Entity p_147472_7_, ItemStack p_147472_8_)
      {
          Block block1 = this.getBlock(p_147472_2_, p_147472_3_, p_147472_4_);
@@ -1228,7 +1236,7 @@
      }
  
      public PathEntity getPathEntityToEntity(Entity p_72865_1_, Entity p_72865_2_, float p_72865_3_, boolean p_72865_4_, boolean p_72865_5_, boolean p_72865_6_, boolean p_72865_7_)
-@@ -3464,6 +4130,12 @@
+@@ -3464,6 +4131,12 @@
          for (int i = 0; i < this.playerEntities.size(); ++i)
          {
              EntityPlayer entityplayer1 = (EntityPlayer)this.playerEntities.get(i);
@@ -1241,7 +1249,7 @@
              double d5 = entityplayer1.getDistanceSq(p_72977_1_, p_72977_3_, p_72977_5_);
  
              if ((p_72977_7_ < 0.0D || d5 < p_72977_7_ * p_72977_7_) && (d4 == -1.0D || d5 < d4))
-@@ -3489,7 +4161,12 @@
+@@ -3489,7 +4162,12 @@
          for (int i = 0; i < this.playerEntities.size(); ++i)
          {
              EntityPlayer entityplayer1 = (EntityPlayer)this.playerEntities.get(i);
@@ -1255,7 +1263,7 @@
              if (!entityplayer1.capabilities.disableDamage && entityplayer1.isEntityAlive())
              {
                  double d5 = entityplayer1.getDistanceSq(p_72846_1_, p_72846_3_, p_72846_5_);
-@@ -3660,6 +4337,18 @@
+@@ -3660,6 +4338,18 @@
  
      public void updateAllPlayersSleepingFlag() {}
  
@@ -1274,7 +1282,7 @@
      public float getWeightedThunderStrength(float p_72819_1_)
      {
          return (this.prevThunderingStrength + (this.thunderingStrength - this.prevThunderingStrength) * p_72819_1_) * this.getRainStrength(p_72819_1_);
-@@ -3932,8 +4621,8 @@
+@@ -3932,8 +4622,8 @@
       */
      public void addTileEntity(TileEntity entity)
      {
@@ -1285,7 +1293,7 @@
          {
              dest.add(entity);
          }
-@@ -4029,4 +4718,73 @@
+@@ -4029,4 +4719,73 @@
          }
          return count;
      }