73 lines
2.4 KiB
C#
73 lines
2.4 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 EasyTalk.Demo
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{
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/// <summary>
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/// Used to move an object along a curve over time.
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/// </summary>
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public class CurvedPath : MonoBehaviour
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{
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/// <summary>
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/// The object to move along the curve.
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/// </summary>
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[SerializeField]
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private GameObject movedObject;
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/// <summary>
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/// The start point of the curve.
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/// </summary>
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[SerializeField]
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private Transform start;
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/// <summary>
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/// The mid-point of the curve.
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/// </summary>
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[SerializeField]
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private Transform control;
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/// <summary>
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/// The end point of the curve.
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/// </summary>
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[SerializeField]
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private Transform end;
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/// <summary>
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/// The current position (between 0.0 and 1.0) along the path.
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/// </summary>
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[SerializeField]
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private float position = 0.0f;
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/// <summary>
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/// Whether the curved path follower is being played.
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/// </summary>
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[SerializeField]
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private bool isPlaying = false;
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/// <summary>
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/// Returns a Vector3 position which lies on the curve going from start to control to end based on the value provided.
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/// </summary>
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/// <param name="start">The start point of the curve.</param>
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/// <param name="control">The control/mid-point of the curve.</param>
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/// <param name="end">The end point of the curve.</param>
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/// <param name="amount">How far along the curve a position is to be retrieved for (from 0.0 to 1.0).</param>
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/// <returns></returns>
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public static Vector3 GetPoint(Vector3 start, Vector3 control, Vector3 end, float amount)
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{
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return Vector3.Lerp(Vector3.Lerp(start, control, amount), Vector3.Lerp(control, end, amount), amount);
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}
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void Update()
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{
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if (isPlaying)
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{
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Vector3 oldPos = movedObject.transform.position;
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movedObject.transform.position = GetPoint(start.position, control.position, end.position, position);
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Vector3 newPos = movedObject.transform.position;
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movedObject.transform.LookAt((newPos - oldPos) + newPos, movedObject.transform.up);
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}
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}
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}
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}
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