62 lines
2.2 KiB
C#
62 lines
2.2 KiB
C#
/// ---------------------------------------------
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/// Behavior Designer
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/// Copyright (c) Opsive. All Rights Reserved.
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/// https://www.opsive.com
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/// ---------------------------------------------
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namespace Opsive.BehaviorDesigner.Samples
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{
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using UnityEngine;
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/// <summary>
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/// Pans to camera to always have the target in view.
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/// </summary>
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public class CameraPanner : MonoBehaviour
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{
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[Tooltip("The object that the camera should follow.")]
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[SerializeField] protected Transform m_Target;
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[Tooltip("The speed that the camera should be panned.")]
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[SerializeField] protected float m_Speed = 5;
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private Transform m_Transform;
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private Quaternion m_StartTargetRotation;
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private Vector3 m_Offset;
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/// <summary>
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/// Initialize the default values.
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/// </summary>
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private void Awake()
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{
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m_Transform = transform;
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}
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/// <summary>
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/// Sets the camera offset.
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/// </summary>
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private void OnEnable()
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{
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m_StartTargetRotation = m_Target.rotation;
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m_Offset = m_Target.InverseTransformPoint(m_Transform.position);
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}
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/// <summary>
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/// Pans the camera.
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/// </summary>
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private void LateUpdate()
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{
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m_Transform.position = Vector3.MoveTowards(m_Transform.position, TransformPoint(m_Target.position, m_StartTargetRotation, m_Offset), m_Speed * Time.deltaTime);
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}
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/// <summary>
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/// Transforms the position from local space to world space. This is similar to Transform.TransformPoint but does not require a Transform.
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/// </summary>
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/// <param name="worldPosition">The world position of the object.</param>
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/// <param name="rotation">The world rotation of the object.</param>
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/// <param name="localPosition">The local position of the object.</param>
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/// <returns>The world space position.</returns>
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private static Vector3 TransformPoint(Vector3 worldPosition, Quaternion rotation, Vector3 localPosition)
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{
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return worldPosition + (rotation * localPosition);
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}
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}
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} |