Directional Animation Sets are a convenient way of managing groups of up/right/down/left animations (including or excluding diagonals) with a standardised way of selecting which one you want.
Overview
1. Create an animation set | 2. Use it in code |
---|---|
Select the animations you want, Right Click, and use Create/Animancer/Directional Animation Set/From Selection. |
|
The Directional Sprites samples demonstrate how to use them in more detail.
Creation
DirectionalAnimationSet
s can be created by Right Clicking in the Project window and using the menu functions in Create/Animancer/Directional Animation Set/...
:
Function | Effect |
---|---|
4 Directions |
Creates an empty DirectionalAnimationSet (4 directions, no diagonals). |
8 Directions |
Creates an empty DirectionalAnimationSet8 (8 directions, including diagonals). |
From Selection |
Creates either a DirectionalAnimationSet or DirectionalAnimationSet8 to reference the animations you have selected. This requires the animation names to be identical except for the words "Up", "Right", "Down", and "Left". |
Once you have created a set, you can assign animations to each of its fields manually or use its Find Animations
context menu function to automatically assign animations with the same name (varying only by direction) in the same folder. For example, the video below shows a set called Mage-Idle which finds the animations called Mage-IdleUp, Mage-IdleRight, Mage-IdleDown, and Mage-IdleLeft because those animations have the same base name as the set:
Also note that DirectionalAnimationSet
s are not limited to only Sprite
animations. For example, the Directional Mixers sample originally used a set to reference its movement animations before Mixer Transitions were implemented.
Usage
Using DirectionalAnimationSet
s in your scripts is very easy:
- Declare a Serialized Field:
[SerializeField] private DirectionalAnimationSet _Idles;
That gives you an Inspector field where you can assign any DirectionalAnimationSet
asset. Since DirectionalAnimationSet8
Inherits from DirectionalAnimationSet
, you can assign either type of set to such a field without changing the script.
- Determine the direction you want from the set:
// Input Vector:
Vector2 direction = new Vector2(Input.GetAxisRaw("Horizontal"), Input.GetAxisRaw("Vertical"));
// Or Enum (4 Directions):
DirectionalAnimationSet.Direction direction = DirectionalAnimationSet.Direction.Right;
// Or Enum (8 Directions):
DirectionalAnimationSet8.Direction direction = DirectionalAnimationSet8.Direction.UpRight;
- Get the set's
AnimationClip
corresponding to that direction andPlay
it normally:
// Assuming you also have a reference to an AnimancerComponent somewhere:
// [SerializeField] private AnimancerComponent _Animancer;
AnimationClip clip = _Idles.GetClip(direction);
_Animancer.Play(clip);
The Directional Sprites samples demonstrate how to use them in more detail.
Snapping
The DirectionalAnimationSet.Snap
method returns a copy of a given Vector pointing in the closest direction that set type has an animation for (4 or 8 directions depending on which type of set you are using). This is useful for clamping an input vector to the exact direction the animation is facing so that you can limit the character to only move in those directions.
Under the Hood
The DirectionalAnimationSet
class contains quite a bit of functionality, but at its core it is just a ScriptableObject
with a few AnimationClip
s and a method to choose whichever is closest to a given direction Vector:
public class DirectionalAnimationSet : ScriptableObject
{
[SerializeField] private AnimationClip _Up;
[SerializeField] private AnimationClip _Right;
[SerializeField] private AnimationClip _Down;
[SerializeField] private AnimationClip _Left;
public virtual AnimationClip GetClip(Vector2 direction)
{
if (direction.x >= 0)
{
if (direction.y >= 0)
return direction.x > direction.y ? _Right : _Up;
else
return direction.x > -direction.y ? _Right : _Down;
}
else
{
if (direction.y >= 0)
return direction.x < -direction.y ? _Left : _Up;
else
return direction.x < direction.y ? _Left : _Down;
}
}
}
DirectionalAnimationSet8
Inherits from DirectionalAnimationSet
so it has the same fields as well as another 4 for the diagonals and it override
s the GetClip
method to choose from all 8 of its animations.
Both of those scripts are included in Animancer Lite so you can read and modify them if you want to.