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using UnityEngine; using System.Collections; public class Move : MonoBehaviour { // Ö÷½Ç public Transform target; // Ëõ·ÅϵÊý private float distance = 10.0f; // ×óÓÒ»¬¶¯Òƶ¯ËÙ¶È private float xSpeed = 250.0f; private float ySpeed = 120.0f; // Ëõ·ÅÏÞÖÆϵÊý private float yMinLimit = -20; private float yMaxLimit = 80; // ÉãÏñÍ·µÄλÖà private float x = 0.0f; private float y = 0.0f; // ¼Ç¼ÉÏÒ»´ÎÊÖ»ú´¥ÃþλÖÃÅжÏÓû§ÊÇÔÚ×ö·Å´ó»¹ÊÇËõСÊÖÊÆ private Vector2 oldPosition1 = new Vector2 (0, 0); private Vector2 oldPosition2 = new Vector2 (0, 0); //³õʼ»¯ÓÎÏ·ÐÅÏ¢ÉèÖà void Start () { Debug.Log (oldPosition1); Vector3 angles = transform.eulerAngles; x = angles.y; y = angles.x; GetComponent<Rigidbody> ().freezeRotation = true ; } void Update () { // Åжϴ¥ÃþÊýÁ¿Îªµ¥µã´¥Ãþ if (Input.touchCount == 1) { // ´¥ÃþÀàÐÍΪÒƶ¯´¥Ãþ if (Input.GetTouch (0).phase == TouchPhase.Moved) { //¸ù¾Ý´¥Ãþµã¼ÆËãXÓëYλÖà x += Input.GetAxis ( "Mouse X" ) * xSpeed * 0.02f; y -= Input.GetAxis ( "Mouse Y" ) * ySpeed * 0.02f; } } // Åжϴ¥ÃþÊýÁ¿Îª¶àµã´¥Ãþ if (Input.touchCount > 1) { // Ç°Á½Ö»ÊÖÖ¸´¥ÃþÀàÐͶ¼ÎªÒƶ¯´¥Ãþ if (Input.GetTouch (0).phase == TouchPhase.Moved || Input.GetTouch (1).phase == TouchPhase.Moved) { // ¼ÆËã³öµ±Ç°Á½µã´¥ÃþµãµÄλÖà var tempPosition1 = Input.GetTouch (0).position; var tempPosition2 = Input.GetTouch (1).position; // º¯Êý·µ»ØÕæΪ·Å´ó，·µ»Ø¼ÙΪËõС if (isEnlarge (oldPosition1, oldPosition2, tempPosition1, tempPosition2)) { // ·Å´óϵÊý³¬¹ý3ÒÔºó²»ÔÊÐí¼ÌÐø·Å´ó // ÕâÀïµÄÊý¾ÝÊǸù¾ÝÎÒÏîÄ¿ÖеÄÄ£ÐͶøµ÷½ÚµÄ，´ó¼Ò¿ÉÒÔ×Ô¼ºÈÎÒâÐÞ¸Ä if (distance > 3) { distance -= 0.5f; } } else { // ËõСϵÊý·µ»Ø18.5ºó²»ÔÊÐí¼ÌÐøËõС // ÕâÀïµÄÊý¾ÝÊǸù¾ÝÎÒÏîÄ¿ÖеÄÄ£ÐͶøµ÷½ÚµÄ，´ó¼Ò¿ÉÒÔ×Ô¼ºÈÎÒâÐÞ¸Ä if (distance < 18.5f) { distance += 0.5f; } } // ±¸·ÝÉÏÒ»´Î´¥ÃþµãµÄλÖÃ，ÓÃÓÚ¶Ô±È oldPosition1 = tempPosition1; oldPosition2 = tempPosition2; } } } // º¯Êý·µ»ØÕæΪ·Å´ó，·µ»Ø¼ÙΪËõС bool isEnlarge (Vector2 oP1, Vector2 oP2, Vector2 nP1, Vector2 nP2) { // º¯Êý´«ÈëÉÏÒ»´Î´¥ÃþÁ½µãµÄλÖÃÓë±¾´Î´¥ÃþÁ½µãµÄλÖüÆËã³öÓû§µÄÊÖÊÆ float leng1 = Mathf.Sqrt ((oP1.x - oP2.x) * (oP1.x - oP2.x) + (oP1.y - oP2.y) * (oP1.y - oP2.y)); float leng2 = Mathf.Sqrt ((nP1.x - nP2.x) * (nP1.x - nP2.x) + (nP1.y - nP2.y) * (nP1.y - nP2.y)); if (leng1 < leng2) { // ·Å´óÊÖÊÆ return true ; } else { // ËõСÊÖÊÆ return false ; } } // Update·½·¨Ò»µ©µ÷ÓýáÊøÒÔºó½øÈëÕâÀïËã³öÖØÖÃÉãÏñ»úµÄλÖà void LateUpdate () { // targetΪÖ÷½Ç，Ëõ·ÅÐýתµÄ²ÎÕÕÎï if (target) { // ÖØÖÃÉãÏñ»úµÄλÖà y = ClampAngle (y, yMinLimit, yMaxLimit); Quaternion rotation = Quaternion.Euler (y, x, 0); Vector3 position = rotation * new Vector3 (0.0f, 0.0f, -distance) + target.position; transform.rotation = rotation; transform.position = position; } } static float ClampAngle ( float angle, float min, float max) { if (angle < -360) angle += 360; if (angle > 360) angle -= 360; return Mathf.Clamp (angle, min, max); } }

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