I added EntityRegistry.registerModEntity(EntityBall.class, "Ball", 49, this, 80, 3, true); to the main mod class and now it renders while thrown but its really weird. When I go to 0,0,0 it throws normally but when I move away from that location ( when I move up the balls trajectory is towards the sky in an arc. If I move the character left the balls trajectory is towards the right and if I move right the balls trajectory is left. and If I turn the character the trajectory its all weird.

Sorry I haven't been responding, I have been busy.

I added EntityRegistry.registerModEntity(EntityBall.class, "Ball", 49, this, 80, 3, true); to the main mod class and now it renders while thrown but its really weird. When I go to 0,0,0 it throws normally but when I move away from that location ( when I move up the balls trajectory is towards the sky in an arc. If I move the character left the balls trajectory is towards the right and if I move right the balls trajectory is left. and If I turn the character the trajectory its all weird.

 

Did you change

 	       if (!par2World.isRemote)
       {
           par2World.spawnEntityInWorld(new EntityBall(par2World));
       }

to

	       if (!par2World.isRemote)
       {
           par2World.spawnEntityInWorld(new EntityBall(par2World,par3EntityPlayer));
       }

 

To fix your inventory problem, in you itemrenderer change

	@Override
public boolean shouldUseRenderHelper(ItemRenderType type, ItemStack item,
		ItemRendererHelper helper) {
	return false;
}

to

	@Override
public boolean shouldUseRenderHelper(ItemRenderType type, ItemStack item,
		ItemRendererHelper helper) {
	return type==ItemRenderType.INVENTORY;
}