調試背景

2D游戲的制作最重要的是層的設置

先設置兩個層①Layers②Edit Layers③Sorting Layers添加兩個層BackGround和Front

調試大雁

創建2D object改名BackGround設置背景圖片修改為BackGround 0層

創建2D object添加大雁圖片Ctrl+6，保存，把大雁動態模型全選，插入。調整時間可以看起來舒服，調整所在層為BackGround 1層

添加腳本使大雁從屏幕右邊開始飛入左邊飛出

publicclassSwanFly : MonoBehaviour {

??? //天鵝起飛的位置

??? privateVector3 startPosition;

??? publicfloat speed;

???????? // Use this for initialization

???????? void Start () {

??????? Debug.Log("屏幕的寬度" + Screen.width);

??????? Debug.Log("屏幕的高度" + Screen.height);

??????? Vector3 screenSize = Camera.main.ScreenToWorldPoint(newVector3(Screen.width, Screen.height, 0));

??????? float swanExtentsX = transform.GetComponent<Renderer>().bounds.extents.x;

??????? startPosition = newVector3(screenSize.x + transform.position.y, transform.position.z);

??????? transform.position = startPosition;

???????? }??????

???????? // Update is called once per frame

???????? void Update () {

??????? if (transform.position.x <-startPosition.x)

??????? {

??????????? transform.position = startPosition;

??????? }

??? ????transform.Translate(Vector3.right * -1 * speed * Time.deltaTime);

???????? }

}

調整草地

設置空物體，在其中創建草地，兩邊超過相機邊框。

在空物體上掛載BoxCollider2D組件，點擊EditCollider 會有一個綠色方框調整位置

如圖所示即可

?

?

游戲對象設置

設置球添加Front0層，掛載Circle Collider2D和Rigibody2D組件

創建一個2D空物體掛載腳本，隨機產生球

publicclassCreatBall : MonoBehaviour {

??? //保齡球預制體

??? publicGameObject ballPrefab;

??? //產生的范圍

??? privatefloat createRange;

??? //產生的時間

??? publicfloat rate;

???????? // Use this for initialization

???????? void Start () {

??????? Vector3 screenSize = Camera.main.ScreenToWorldPoint(newVector3(Screen.width, Screen.height, 0));

??????? float ballExtentsX = ballPrefab.transform.GetComponent<Renderer>().bounds.extents.x;

??????? createRange = screenSize.x -ballExtentsX;

??? }

???????? // Update is called once per frame

???????? void Update () {

??????? rate -= Time.deltaTime;

??????? if (rate<0)

??????? {

??????????? Vector3 position = newVector3(Random.Range(-createRange, createRange),transform.position.y, transform.position.z);

???????? ???GameObject ball = Instantiate(ballPrefab, position, Quaternion.identity) asGameObject;

??????????? //下一個保齡球產生的時間

??????????? rate = Random.Range(1.5f, 2.5f);

??????????? Destroy(ball, 3f);

??????? }

???????? }

}

調試接物體的物體

創建兩個2D object分別添加帽子的內沿和外沿，外沿為內沿的子物體

內沿層Front 0層? 外延層Front 1層

分別掛載Edge Collider 2D組件，內沿勾選Is Trigger，發生碰撞

設置Edit Collider

外沿? 內沿

掛載腳本接球然后銷毀產生粒子效果

publicclassHatController : MonoBehaviour {

??? //帽子移動的范圍

??? privatefloat HatMoveRange;

??? //粒子產生的位置

??? publicGameObject particleSystemPoint;

??? publicGameObject particle;

???????? // Use this for initialization

???????? void Start () {

??????? Vector3 screenSize = Camera.main.ScreenToWorldPoint(newVector3(Screen.width, Screen.height, 0));

??????? float hatExtentsX = transform.GetComponent<Renderer>().bounds.extents.x;

??????? HatMoveRange = screenSize.x -hatExtentsX;

??? }

???????? // Update is called once per frame

???????? void Update () {

??????? Vector3 mousePosition = Camera.main.ScreenToWorldPoint(Input.mousePosition);

??????? float x = Mathf.Clamp(mousePosition.x,-HatMoveRange, HatMoveRange);

??????? transform.position = newVector3(x, transform.position.y, transform.position.z);

???????? }

??? voidOnTriggerEnter2D(Collider2D col)

??? {

??????? //粒子產生

??????? GameObject tempParticle = Instantiate(particle,particleSystemPoint.transform.position, Quaternion.identity)asGameObject;

??????? Destroy(col.gameObject);

??????? Destroy(tempParticle, 2f);

??? }

}

設置粒子效果

設置預制體的Renderer中 Sorting Layer為Front 2層

離子產生的位置設置一個2D空物體成為帽子內沿的子物體，調整位置

總結

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