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[1.12.2] Passenger's custom position


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I have a custom hostile entity, that can grab his attack target. In general, target becomes a passenger of my entity, when AI task is triggered. So, I have a problem with position of this passenger. When my entity grabs, for example, a villager, it all looks fine. But, when this attack applied to player, the last one gets some twitching and usually located above attacker (screenshots are below the text). It's seems like something makes a conflict with a method, which I'm using... Can somebody help me. please? 


Correct work example:



And this is my problem...



And, finally, code fragment:

    public void updatePassenger(Entity passenger)
        double offsetX = 0;
        double offsetZ = 0;

        if (this.isPassenger(passenger))
            offsetX = Math.sin(-this.rotationYawHead / (180D / Math.PI)) * 0.5F;
            offsetZ = Math.cos(this.rotationYawHead / (180D / Math.PI)) * 0.5F;

        Vec3d pos = new Vec3d(this.posX + offsetX, this.posY, this.posZ + offsetZ);

        passenger.setPosition(pos.x, pos.y, pos.z);

(It's a one of the latest tries)


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