using System;
using UnityEngine;

[ExecuteInEditMode]
public class MegaWalkBridge : MonoBehaviour
{
	public GameObject bridge;

	[HideInInspector]
	public MegaCurveDeform mod;

	public float offset;

	public float smooth;

	private void Update()
	{
		if (!bridge)
		{
			return;
		}
		if (mod == null)
		{
			mod = bridge.GetComponent<MegaCurveDeform>();
		}
		if ((bool)mod)
		{
			int axis = (int)mod.axis;
			Vector3 position = base.transform.position;
			Vector3 point = mod.transform.worldToLocalMatrix.MultiplyPoint(position);
			if (point.x > mod.bbox.min.x && point.x < mod.bbox.max.x && point.z > mod.bbox.min.z && point.z < mod.bbox.max.z)
			{
				float alpha = (point[axis] - mod.bbox.min[axis]) / (mod.bbox.max[axis] - mod.bbox.min[axis]);
				SetPos(mod, alpha);
				point.y = mod.GetPos(alpha) + offset * 0.01f;
				base.transform.position = bridge.transform.localToWorldMatrix.MultiplyPoint(point);
			}
			else
			{
				SetPos(mod, 0f);
			}
		}
	}

	private float easeInOutSine(float start, float end, float value)
	{
		end -= start;
		return (0f - end) / 2f * (Mathf.Cos((float)Math.PI * value / 1f) - 1f) + start;
	}

	public void SetPos(MegaCurveDeform mod, float alpha)
	{
		float num = 0f;
		num = ((!(alpha < 0.5f)) ? easeInOutSine((0f - mod.MaxDeviation) * 0.01f, 0f, (alpha - 0.5f) / 0.5f) : easeInOutSine(0f, (0f - mod.MaxDeviation) * 0.01f, alpha / 0.5f));
		mod.SetKey(0, 0f, 0f, Mathf.Tan(0f), Mathf.Tan(Mathf.Atan2(num, alpha)));
		float intan = Mathf.Lerp(Mathf.Tan(0f), Mathf.Tan(Mathf.Atan2(num, alpha)), smooth);
		float outtan = Mathf.Lerp(Mathf.Tan((float)Math.PI), Mathf.Tan(Mathf.Atan2(num, alpha - 1f)), smooth);
		mod.SetKey(1, Mathf.Clamp(alpha, 0.001f, 0.999f), num, intan, outtan);
		mod.SetKey(2, 1f, 0f, Mathf.Tan(Mathf.Atan2(0f - num, 1f - alpha)), Mathf.Tan((float)Math.PI));
	}
}