using Sirenix.OdinInspector;
using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

namespace Ether
{
    public enum AnimationSetType
    {
        [InspectorName("独立")]
        Single,
        [InspectorName("上")]
        Up,
        [InspectorName("下")]
        Down,
        [InspectorName("左")]
        Left,
        [InspectorName("右")]
        Right,
        [InspectorName("左上")]
        UpLeft,
        [InspectorName("右上")]
        UpRight,
        [InspectorName("左下")]
        DownLeft,
        [InspectorName("右下")]
        DownRight
    }

    [CreateAssetMenu(fileName = "New Animation Set", menuName = "动画/创建动画资源", order = 1)]
    public class AnimationSet : SerializedScriptableObject
    {
        [LabelText("动画列表")]
        [ShowInInspector]
        [DictionaryDrawerSettings(KeyLabel = "方向", ValueLabel = "动画clip")]
        public Dictionary<AnimationSetType, AnimationClip> animationClips = new Dictionary<AnimationSetType, AnimationClip>();

        public AnimationClip GetClip(AnimationSetType type = AnimationSetType.Single)
        {
            animationClips.TryGetValue(type, out AnimationClip clip);
            return clip;
        }

        public AnimationClip GetClip(Vector2 direction)
        {
            var angle = Mathf.Atan2(direction.y, direction.x);
            var octant = Mathf.RoundToInt(8 * angle / (2 * Mathf.PI) + 8) % 8;

            AnimationClip clip = null;
            switch (octant)
            {
                case 0:
                    clip = GetClip(AnimationSetType.Right);
                    break;
                case 1:
                    clip = GetClip(AnimationSetType.UpRight);
                    clip = clip == null ? GetClip(AnimationSetType.Right) : clip;
                    break;
                case 2:
                    clip = GetClip(AnimationSetType.Up);
                    break;
                case 3:
                    clip = GetClip(AnimationSetType.UpLeft);
                    clip = clip == null ? GetClip(AnimationSetType.Left) : clip;
                    break;
                case 4:
                    clip = GetClip(AnimationSetType.Left);
                    break;
                case 5:
                    clip = GetClip(AnimationSetType.DownLeft);
                    clip = clip == null ? GetClip(AnimationSetType.Left) : clip;
                    break;
                case 6:
                    clip = GetClip(AnimationSetType.Down);
                    break;
                case 7:
                    clip = GetClip(AnimationSetType.DownRight);
                    clip = clip == null ? GetClip(AnimationSetType.Right) : clip;
                    break;
            }

            return clip;
        }
    }
}