[1.11.2] Mounting Mobs on Horses

[Paladin]

Hello, I'm current Attempting to implement 1 new mob type, which I'm planning to have mounted on a horse. 

 

Horse Mounted Villager:

public class EntityVillagerCaptain extends EntityVillagerSoldier{

 

Completed Melee Villager:

public class EntityVillagerSoldier extends EntityVillager{

 

I've attempted to copy some code from the spider class replacing the spider references with a new horse, but all it does is freeze my EntityVillagerCaptain once it's spawned. 

 

 EntityHorse horse = new EntityHorse(this.world);
	        horse.setPosition(this.posX, this.posY, this.posZ);
	        this.world.spawnEntity(horse);
	        this.startRiding(horse);

 

Some Notes:

The EntityVillagerCaptain jerks his arms and legs around rapidly.

The horse is nowhere to be seen.

And upon some debugging, the message:

[16:42:28] [Client thread/WARN]: Received passengers for unknown entity

IS also displayed in the console each to a EntityVillagerCaptain is spawned.

 

Is there something I'm doing wrong, or is there a better way to do this?

 

Thanks.

[Paladin]

Sorry for the duplicate my internet lagged. Please respond to the other topic I've made. 

Edited June 10, 2017 by Paladin