1 : UNITY＝ANDROIDの記憶するべきもの

《文法》

【Nullじゃないなら実行】

// :: Callback
Callback_CompletedFX?.Invoke();
// :: Same the above
/*if (Callback_CompletedFX != null)
{
	Callback_CompletedFX();
}*/

《EASY to USE》

【EnumのDescriptionを取得して使用】

// :: Enums : Animation Key
private enum eAnimation
{
  [Description("idle@loop")]
  IDLE,
  [Description("run@loop")]
  RUN,
  [Description("walk@loop")]
  WALK
}

// :: for use enum Description
// ::: Ref : http://kawakawa2000.jugem.jp/?eid=27
// ::: I don't understand perfectly yet.
private string GetEnumDescription(eAnimation value)
{
	FieldInfo fi = value.GetType().GetField(value.ToString());
	var attributes = (DescriptionAttribute[])fi.GetCustomAttributes(typeof(DescriptionAttribute), false);

	var descriptionString = attributes.Select(ele => ele.Description).FirstOrDefault();

	if(descriptionString != null)
	{
		return descriptionString;
	}
	return value.ToString();
}

void Update() 
{
	anim.Play(this.GetEnumDescription(eAnimation.RUN));
}

【Unity Editorにツールを登録】

// :: for Using
using UnityEditor;

// :: Easy to use
public class MenuTest : MonoBehaviour
{
    // :: Location
    [MenuItem("MyMenu/Delete All PlayerPrefs")]
    // :: Program : Delete All PlayerPrefs
    static void DeleteAllPlayerPrefs()
    {
        PlayerPrefs.DeleteAll();
        Debug.Log("deleted all player prefs");
    }
}

《イベント》

【ボタンにイベントリスナーを追加】

＞＞クリックすると動くように

// :: Add Event Listener
btn.onClick.AddListener(this.ClickedButton);

【数秒後に実行】
＞＞Singletonに定義してそれを持ってきて使うのも可能

<<CT_Ruler>>
// :: Do Action after Waiting
UIController.WaitForSecondsAndDo(10f, (() => { UIController.FadeIn(GOHolder.SPRITE_handRight); }));

<<Sing_UIController>>
// :: Do Action after Waiting
public void WaitForSecondsAndDo(float time, System.Action action)
{
	this.StartCoroutine(WaitForSecondsAndDoImplement(time, action));
}
private IEnumerator WaitForSecondsAndDoImplement(float time, System.Action action)
{
	yield return new WaitForSeconds(time);
	action();
}

【ゲーム停止】

// ::　Pause Game
Time.timeScale = 0;
// ::　RePlay Game
Time.timeScale = 1;

《出力》

【PrefabをベースにGameObjectの複製を作ってそれを画面に出力】

// :: Make GameObject & Render
GameObject prefab =  Resources.Load<GameObject>("ch_03_01");
GameObject clone =  Instantiate<GameObject>(prefab);

【出力する際に親（Parent）と位置を設定】

// :: Render Chest Closed and Set Position
// ::: Use Transform Parent
// ::: 1. GameObject
// ::: 2. Position
// ::: 3. Rotation
// ::: 4. Parent transform
chestClosed = Object.Instantiate<GameObject>(chestPrefabA, // 1
            lastTarget.transform.position + new Vector3(0, 0, 0.5f), // 2 
            Quaternion.Euler(-90, -90, 0), // 3
            lastTarget.transform); // 4

【出力してから親（Parent）を設定】

// :: Create Weapon and Set Parent
GameObject spear = Object.Instantiate<GameObject>(Resources.Load<GameObject>("Spear_7"));
spear.transform.SetParent(dummyRHand);
// :: Change Position
spear.transform.localPosition = new Vector3(0, 0, 0);
spear.transform.localRotation = Quaternion.Euler(new Vector3(0, 0, 0));

【画面にいるGameObjectの出力を消す】

// :: Destroy Game Object
Destroy(itm);

【３Dのキャラ位置に合わせて２DキャンバスにHUDを出力】

// :: When Button Clicked : Show HUD
this.BUTTON_test.onClick.AddListener(() =>
{
	// :: Instantiate with Canvas
	var go = Instantiate<GameObject>(this.hudPrefab, this.canvas.transform);

	// :: Check Where do you want set the position
	// ::: Main Camera World Point => Screen Point
	var screenPoint = Camera.main.WorldToScreenPoint(playerGO.transform.position);

	// ::: Screen Point => Local(Canvas) Point
	Vector2 localPoint;
	// ::: ((RectTransform) Canvas Transform, Screen Point, Camera which you will set HUD, out local Point)
	RectTransformUtility.ScreenPointToLocalPointInRectangle((RectTransform)canvas.transform, screenPoint, this.uiCam, out localPoint);

	// :: Change HUD Local position
	go.transform.localPosition = localPoint;

	// :: Play and Destroy
	var hud = go.GetComponent<HUDText>();
	hud.Init(992);
	hud.Play();
	hud.Callback_Play = () => {
		Destroy(hud.gameObject);
	};
});

《方向と移動》

【１歩前に動く：マップ基準】

// :: Map Position
hero.transform.position += Vector3.forward;
//this.gameObject.transform.Translate(Vector3.forward, Space.Self);

【１歩前に動く：自分基準】

// :: Self Position
hero.transform.position += hero.transform.forward;
//this.gameObject.transform.Translate(this.transform.forward, Space.World);

【目標の方向を見るように角度を修正】

// :: Look target Direction
Vector3 target = new Vector3(1, 0.49f, -2) - itm.transform.position;
itm.transform.rotation = Quaternion.LookRotation(target);

【目標を見てその方向に走る（結果：目標を通って走る）】

// :: Look at Target
this.transform.LookAt(target.transform);
// :: Move There with Translate
this.transform.Translate(this.transform.forward * 0.1f * Time.deltaTime, Space.World);

⇒まだ完全に理解していない。

【目標まで行く】

// :: Move Toward 
this.transform.position = Vector3.MoveTowards(this.transform.position, this.target.transform.position, 0.1f * Time.deltaTime);

《衝突》

【衝突無視】

// :: Find all BoxCollider2D
foreach (var itm in GameObject.FindObjectsOfType<BoxCollider2D>())
{
	// :: Player : Ignore it
	Physics2D.IgnoreCollision(playerRigidbody.gameObject.GetComponent<CircleCollider2D>(), itm, true);
}

【RayCastで衝突感知】

// :: Hit Checker
RaycastHit hit;
// :: When Racast Hit
// ::: (Start Position, Direction, Hit Object, Max Distance)
if (Physics.Raycast(this.player.transform.position, this.player.transform.forward, out hit, 1f))
{
	// :: Check Hit Object's Name
	Debug.Log(hit.transform.gameObject.name);
	// :: Show ray for Debug
	Debug.DrawRay(this.player.transform.position, this.player.transform.forward * 1f, Color.red);
}

《SCENE移動》

【SCENE移動時に完了をチェック、そしてその後に何かを実行】

// :: Load Scene with Done Checker
UnityEngine.AsyncOperation async = SceneManager.LoadSceneAsync(this.GetEnumDescription(sceneType));
// :: When Scene Load Completed
async.completed += Async_completed;

// :: Do Action
private void Async_completed(UnityEngine.AsyncOperation obj)
{
	if(obj.isDone)
	{
    	Debug.Log("Load Completed");
	}
}