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Vector3.MoveTowards

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マニュアルに切り替える
public static function MoveTowards(current: Vector3, target: Vector3, maxDistanceDelta: float): Vector3;
public static Vector3 MoveTowards(Vector3 current, Vector3 target, float maxDistanceDelta);

Description

現在の位置 current から target に向けて移動します

この関数によって返された値は直線上の currenttarget の間にある maxDistanceDelta ごとに移動する target 寄りの位置になります。targetmaxDistanceDelta よりも近い場合、 返される値は target の位置と同等になります。(すなわち、target 以上には進みません) maxDistanceDelta が負の値だと、target から遠ざかっていきます。

	// The target marker.
	var target: Transform;
	
	// Speed in units per sec.
	var speed: float;
	
	
	function Update () {
		// The step size is equal to speed times frame time.
		var step = speed * Time.deltaTime;
		
		// Move our position a step closer to the target.
		transform.position = Vector3.MoveTowards(transform.position, target.position, step);
	}
using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { public Transform target; public float speed; void Update() { float step = speed * Time.deltaTime; transform.position = Vector3.MoveTowards(transform.position, target.position, step); } }