How does Minecraft do item bob (similar to doom weapon bob)

Questions & Answers
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1

so when you play minecraft it has this really smooth item/weapon bob effect that looks really smooth and feels good to use. its similar to the one on the classic doom games but ive been searching everywhere but i cant find a single result on how to do this. i heard its related to the parabolic eqaution but im a beginner and i dont know sheet

2

Easiest solution would be making animation curve for both axis for x other for y and apply to transform.localPosition in Update() method.

[Range(0f, 1f)]
public float animationTime;
public AnimationCurve myAnimationY;
public AnimationCurve myAnimationX;

// in update
transform.localPosition = new Vector3(myAnimationX.Evaluate(animationTime), myAnimationY.Evaluate(animationTime), 0f);

You configure each axis x,y animation bob separately in inspector, last thing what you need to do is just update you animationTime float from 0 to 1 in update which represents your single movement cycle.