Frame-flipping for Sprites Unity Complex characters

This script is used to automate the flipping of characters animated with the Sprites Unity Complex engine when facing a particular direction.

This is similar to the "Frame flipping" option when using the Sprites Unity engine, where left-facing animations can be flipped when facing right (and vice-versa).

To use:

1. Setup your character using the Sprites Unity Complex engine as normal
2. Update your Animator so that he plays the left-facing equivalent of any right-facing animation (or vice-versa) when appropriate.
3. Place the code below in a C# script named SUC_FrameFlip
4. Place the script on the character and assign the fields - setting the charater's Sprite child as the Transform To Flip.
5. Tweak the Top Angle Freedom value to control how wide an angle a character can have when facing up or down before the script takes effect.

using UnityEngine;
using System.Collections;
using AC;
public class SUC_FrameFlip : MonoBehaviour
{
    [SerializeField] private AC.Char character;
    [SerializeField] private Transform transformToFlip;
    [SerializeField] private AC_2DFrameFlipping frameFlipping;
    [SerializeField] private float topAngleFreedom = 0f;
    private void Update ()
    {
        if (frameFlipping == AC_2DFrameFlipping.None || character == null || transformToFlip == null)
        {
            return;
        }
        bool doFlip = false;
        float spriteAngle = character.GetSpriteAngle ();
        switch (frameFlipping)
        {
        	case AC_2DFrameFlipping.LeftMirrorsRight:
				doFlip = (spriteAngle >= 0f && spriteAngle < 180f);
        		break;
        	case AC_2DFrameFlipping.RightMirrorsLeft:
				doFlip = (spriteAngle > 180f && spriteAngle <= 360f);
        		break;
        	default:
        		return;
        }
        if (spriteAngle < topAngleFreedom || spriteAngle > (360f - topAngleFreedom) || (spriteAngle > (180f - topAngleFreedom) && spriteAngle < (180f + topAngleFreedom)))
        {
        	return;
        }
        if ((doFlip && transformToFlip.localScale.x > 0f) || (!doFlip && transformToFlip.localScale.x < 0f))
        {
            transformToFlip.localScale = new Vector3 (-transformToFlip.localScale.x, transformToFlip.localScale.y, transformToFlip.localScale.z);
        }
    }
    
}