Unityでモノを持ち上げ、離す。 左クリックで物体をとらえ、　左クリックで落とす、右クリックで投げる。

FirstPersonClick

#pragma strict

private var center : Vector3;
private var target : GameObject;
private var moving : boolean;

function Start () {
	center = Vector3(Screen.width/2, Screen.height/2, 0);
	moving = false;

}

function Update () {

	Screen.lockCursor = true;

	if (Input.GetButtonDown("Fire1")) {
		move();
	}
	else if(Input.GetButtonDown("Fire2")){
		if(moving){
			targetThrow();
		}
		
	}

}


function move() {

	var ray : Ray;
	var hit : RaycastHit;
	
	ray = Camera.main.ScreenPointToRay(center);
	
	// 何かにぶつかったら gameObject を取得
	if (Physics.Raycast(ray, hit, 10)) {
		print("hit!");		
		
		target = hit.collider.gameObject;
		
		//targetGameObject = hit.collider.gameObject;
		
		Debug.Log(target.tag);
		
		if(target.tag == "Target"){
		
			var camera : GameObject;
			camera = GameObject.FindWithTag("MainCamera");
			
			if(target.transform.parent == camera.transform){
			
				var movable : GameObject;
				movable = GameObject.FindWithTag("MovableObjects");
				
				target.transform.parent = movable.transform;
				target.rigidbody.isKinematic = false;
								
				target = null;
				moving = false;
				
			}
			else{
				target.transform.parent = camera.transform;
				target.rigidbody.isKinematic = true;
				moving = true;
			}
		}

	} else {
		//targetGameObject = null;
		print("not hit!");
	}
}

function targetThrow(){
	var movable : GameObject;
	movable = GameObject.FindWithTag("MovableObjects");

	target.transform.parent = movable.transform;
	target.rigidbody.isKinematic = false;
				
	// 放り投げる
	var direction : Vector3 = transform.forward;
	target.rigidbody.velocity = direction * 10;
				
	target = null;
				
	moving = false;
}