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Overview

Ads Modifier is used to procedurally aim down sights.

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Inputs

  • Aim Point is a transform that will be aligned with your camera. It’s possible to bind an external value to this property (e.g., aim point transform provided by the weapon).
  • Is Aiming defines if the aiming or not. It’s recommended to bind here a value from a player controller or a weapon.

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Bones

  • Weapon Bone is the bone will be translated and rotated to align sights with the camera. By default, it’s set to IK weapon_bone.
  • Hip Target Bone is a bone that will be used to compute additive aiming. By default, it’s set to the IK weapon_bone_r.
  • Aim Target Bone is a bone will be used as an aiming target. Usually, it is a camera socket attached to the head.

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ADS Blends

  • Position/Rotation Blend Blend between absolute and additive aiming.
  • Aiming Speed: Playrate of the aiming transition.
  • Aiming Ease Mode: Interpolation function for the aiming transition.
  • Aim Point Speed: Speed of changing the aim point transform.
  • Aim Point Ease Mode: Interpolation function for the aim point transition.
  • Camera Blend: If set to 0, the weapon will be moved to aim down sights. If set to 1, the camera will be moved instead.

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Use-cases

This modifier is commonly used for aiming down sights (ADS). There are 2 types of aiming:
  1. Absolute: completely overrides the base pose, keeping the sights always aligned.
  2. Additive: applies on top of the base pose, keeping the animations, but not always aligning sights.
Using blend values for different translation and rotation axes can give a nice effect when playing animations in the ADS mode.
Tip: For example, when playing a reload animation, it is necessary to propagate some motion to the aiming pose — adjusting blend factors will help with that.