using UnityEngine;
using System.Collections;

namespace SpartanFist
{
	[AddComponentMenu("Interactions/Switches/Floor Switch")]

	public class DepressionSwitch : Switch
	{
		[Header("References"), Tooltip("(optional) this is the mesh we're depressing down or popping back up with switch state")]
		public GameObject switchMeshObj;

		protected float curSwitchBlendTime = 0.0f;
		protected float baseButtonY = 0.0f;

		/* Magic Numbers */

		protected const float SwitchDepressionAmount = 0.4f;
		protected const float SwitchMoveTime = 0.5f;

		/* Standard Functions */

		public override void Awake()
		{
			base.Awake();

			if (switchMeshObj != null)
			{
				Vector3 curSwitchPos = switchMeshObj.transform.localPosition;
				baseButtonY = curSwitchPos.y;

				if (defaultSwitchState) { curSwitchPos.y = baseButtonY - SwitchDepressionAmount; }
				else { curSwitchPos.y = baseButtonY; }
				switchMeshObj.transform.localPosition = curSwitchPos;
			}
		}

		public override void Update()
		{
			base.Update();

			if (curSwitchBlendTime > 0.0f)
			{
				float deltaTime = PhysicsManager.GetDeltaTimeFor(gameObject);
				curSwitchBlendTime -= deltaTime;
				if (curSwitchBlendTime <= 0.0f)
				{
					curSwitchBlendTime = 0.0f;
				}

				if (switchMeshObj != null)
				{
					float tVal = curSwitchBlendTime / SwitchMoveTime;

					Vector3 curSwitchPos = switchMeshObj.transform.localPosition;
					if (SwitchState)
					{
						// (for switch on, we want to attack into the state faster)
						tVal *= tVal;
						tVal += tVal;
						tVal = 1.0f - tVal;

						curSwitchPos.y = baseButtonY + Mathf.Lerp(0.0f, -SwitchDepressionAmount, tVal);
					}
					else
					{
						// (for switch off, we want to ease out of the state slowly)
						tVal = 1.0f - tVal;
						tVal *= tVal;

						curSwitchPos.y = baseButtonY + Mathf.Lerp(-SwitchDepressionAmount, 0.0f, tVal);
					}
					switchMeshObj.transform.localPosition = curSwitchPos;
				}
			}
		}

		/// <summary>
		/// This is someone tapping their foot down on the switch
		/// </summary>
		protected override void SwitchOn()
		{
			base.SwitchOn();

			curSwitchBlendTime = SwitchMoveTime;
		}

		/// <summary>
		/// This is someone walking off the switch
		/// </summary>
		protected override void SwitchOff()
		{
			base.SwitchOff();

			curSwitchBlendTime = SwitchMoveTime;
		}
	}
}