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アニメーションIKで、(やだ、あの人こっち見てる・・・)にする

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Mecanimに対応したキャラクターは、アニメーションに「ある点を見る」という行動をブレンドすることが可能です。

まず、Mecanimに対応したキャラクターを用意します。
2016-07-12_215738.png

キャラクターのControllerを選択し、
2016-07-12_220818.png

AnimatorウインドウでBaseLayerのIK PassをOnにします。
2016-07-12_215018.png

用意したキャラクターに、以下のスクリプトをアタッチします。

IKLookAt.cs
using UnityEngine;
using System.Collections;

public class IKLookAt : MonoBehaviour
{
    private Animator avator;
    public Transform lookAtObj = null;

    [SerializeField, Range(0, 1)]
    private float lookAtWeight = 1.0f;
    [SerializeField, Range(0, 1)]
    private float bodyWeight = 0.4f;
    [SerializeField, Range(0, 1)]
    private float headWeight = 0.7f;
    [SerializeField, Range(0, 1)]
    private float eyesWeight = 0.5f;
    [SerializeField, Range(0, 1)]
    private float clampWeight = 0.5f;

    // Use this for initialization
    void Start()
    {
        avator = GetComponent<Animator>();
        if (lookAtObj == null)
        {
            lookAtObj = Camera.main.transform;
        }
    }

    void OnAnimatorIK(int layorIndex)
    {
        if (avator)
        {
            avator.SetLookAtWeight(lookAtWeight, bodyWeight, headWeight, eyesWeight, clampWeight);
            avator.SetLookAtPosition(lookAtObj.position);
        }
    }
}

(やだ、あの人こっち見てる・・・)
2016-07-12_215837.png

目、首、胴の各ブレンド率、ブレンド制限率などはパラメータで変更可能です。
2016-07-12_221058.png

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