Unity 2D遊戲製作

除錯背景

2D遊戲的製作最重要的是層的設定

先設定兩個層①Layers②Edit Layers③Sorting Layers新增兩個層BackGround和Front

除錯大雁

建立2D object改名BackGround設定背景圖片修改為BackGround 0層

建立2D object新增大雁圖片Ctrl+6，儲存，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

新增指令碼使大雁從螢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("螢幕的寬度" + Screen.width);

        Debug.Log("螢幕的高度" + 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

設定空物體，在其中建立草地，兩邊超過相機邊框。

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

如圖所示即可

 

 

遊戲物件設定

設定球新增Front0層，掛載Circle Collider2D和Rigibody2D元件

建立一個2D空物體掛載指令碼，隨機產生球

publicclassCreatBall : MonoBehaviour {

    //保齡球預製體

    publicGameObject ballPrefab;

    //產生的範圍

    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);

        }

         }

}

除錯接物體的物體

建立兩個2D object分別新增帽子的內沿和外沿，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元件，內沿勾選Is Trigger，發生碰撞

設定Edit Collider

外沿 內沿

掛載指令碼接球然後銷燬產生粒子效果

publicclassHatController : MonoBehaviour {

    //帽子移動的範圍

    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);

    }

}

設定粒子效果

設定預製體的Renderer中 Sorting Layer為Front 2層

離子產生的位置設定一個2D空物體成為帽子內沿的子物體，調整位置