52 lines
1.6 KiB
C#
52 lines
1.6 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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public class ArrowBehaviour : MonoBehaviour
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{
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// From: https://gamedev.stackexchange.com/questions/183507/add-parabola-curve-to-straight-movetowards-movement
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public float speed = 100;
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public Vector3 target;
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public float arcHeight = 2;
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Vector3 _startPosition;
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float _stepScale;
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float _progress;
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void Start() {
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_startPosition = transform.position;
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float distance = Vector3.Distance(_startPosition, target);
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// This is one divided by the total flight duration, to help convert it to 0-1 progress.
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_stepScale = speed / distance;
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}
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void Update() {
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// Increment our progress from 0 at the start, to 1 when we arrive.
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_progress = Mathf.Min(_progress + Time.deltaTime * _stepScale, 1.0f);
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// Turn this 0-1 value into a parabola that goes from 0 to 1, then back to 0.
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float parabola = 1.0f - 4.0f * (_progress - 0.5f) * (_progress - 0.5f);
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// Travel in a straight line from our start position to the target.
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Vector3 nextPos = Vector3.Lerp(_startPosition, target, _progress);
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// Then add a vertical arc in excess of this.
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nextPos.y += parabola * arcHeight;
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// Continue as before.
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transform.LookAt(nextPos, Vector3.forward);
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transform.position = nextPos;
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// I presume you disable/destroy the arrow in Arrived so it doesn't keep arriving.
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if(_progress >= 1.0f)
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Arrived();
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}
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void Arrived()
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{
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Destroy(this.gameObject);
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}
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}
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