80 lines
2.6 KiB
C#
80 lines
2.6 KiB
C#
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using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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namespace NeoFPS
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{
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public class BillboardOrientation : MonoBehaviour
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{
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[SerializeField, Tooltip("The billboard surface normal direction (this will be turned towards the camera)")]
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private BillboardNormal m_BillboardNormal = BillboardNormal.Back;
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private Transform m_Target = null;
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private Transform m_LocalTransform = null;
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public enum BillboardNormal
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{
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Forward,
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Back,
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Left,
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Right,
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Up,
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Down
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}
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void Start()
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{
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m_LocalTransform = transform;
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FirstPersonCameraBase.onCurrentCameraChanged += OnCurrentCameraChanged;
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OnCurrentCameraChanged(FirstPersonCameraBase.current);
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}
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void OnDestroy()
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{
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FirstPersonCameraBase.onCurrentCameraChanged -= OnCurrentCameraChanged;
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}
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void LateUpdate()
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{
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if (m_Target != null)
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{
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var direction = (m_Target.position - m_LocalTransform.position).normalized;
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switch(m_BillboardNormal)
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{
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case BillboardNormal.Forward:
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transform.rotation = Quaternion.FromToRotation(Vector3.forward, direction);
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break;
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case BillboardNormal.Back:
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transform.rotation = Quaternion.FromToRotation(Vector3.back, direction);
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break;
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case BillboardNormal.Left:
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transform.rotation = Quaternion.FromToRotation(Vector3.left, direction);
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break;
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case BillboardNormal.Right:
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transform.rotation = Quaternion.FromToRotation(Vector3.right, direction);
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break;
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case BillboardNormal.Up:
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transform.rotation = Quaternion.FromToRotation(Vector3.up, direction);
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break;
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case BillboardNormal.Down:
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transform.rotation = Quaternion.FromToRotation(Vector3.down, direction);
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break;
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}
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}
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}
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void OnCurrentCameraChanged(FirstPersonCameraBase cam)
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{
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if (cam == null)
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{
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var main = Camera.main;
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if (main != null)
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m_Target = main.transform;
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else
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m_Target = null;
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}
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else
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m_Target = cam.cameraTransform;
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}
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}
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}
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