using System.Collections;
using System.Collections.Generic;
using UnityEngine;

// 专门用来渲染player character的相机，用来做特效
[RequireComponent(typeof(Camera))]
public class UnitCamera : MonoBehaviour
{
	PCController pc { get { return UnitManager.Instance.pc; } }

	Camera m_Camera;

	private void OnEnable()
	{
		m_Camera = GetComponent<Camera>();
	}

	private void OnPreRender()
	{
		if (pc == null)
			return;
		if (m_Camera == null)
			return;

		Vector3 pos = transform.position;
		transform.position = new Vector3(pc.center.x, pc.center.y, pos.z);

		float dz = Mathf.Abs(pos.z - pc.center.z);
		float fov = 2 * Mathf.Atan2(pc.unitDetail.snapshotBound / 2, dz) * Mathf.Rad2Deg;

		m_Camera.fieldOfView = fov;
	}

}