using Cryville.Common;
using Cryville.Common.Buffers;
using System.Collections.Generic;

namespace Cryville.Crtr.Event {
	internal class MotionCache {
		public bool Valid { get; set; }
		public Vector Value { get; set; }
		public void CopyTo(MotionCache dest) {
			dest.Valid = Valid;
			Value.CopyTo(dest.Value);
		}
	}
	internal class MotionCachePool : CategorizedPool<Identifier, MotionCache> {
		private class Bucket : ObjectPool<MotionCache> {
			readonly MotionRegistry _reg;
			public Bucket(Identifier name, int capacity) : base(capacity) {
				_reg = ChartPlayer.motionRegistry[name];
			}
			protected override MotionCache Construct() {
				var result = new MotionCache();
				result.Value = (Vector)ReflectionHelper.InvokeEmptyConstructor(_reg.Type);
				return result;
			}
			protected override void Reset(MotionCache obj) {
				obj.Valid = false;
			}
		}
		readonly Dictionary<Identifier, ObjectPool<MotionCache>> m_buckets;
		protected override IReadOnlyDictionary<Identifier, ObjectPool<MotionCache>> Buckets { get { return m_buckets; } }
		public MotionCachePool() {
			m_buckets = new Dictionary<Identifier, ObjectPool<MotionCache>>(ChartPlayer.motionRegistry.Count);
			foreach (var reg in ChartPlayer.motionRegistry)
				m_buckets.Add(reg.Key, new Bucket(reg.Key, 4096));
		}
	}
}