unity体感游戏--接钻石游戏（一）游戏物体下落

之前完成一个体感接钻石的小游戏，大体过程就是天上掉钻石，用一个物体接住，这个物体是通过kinect来控制的他的前后左右。接到不同的钻石就可以获得不同的得分。

这段代码是下落的位置，下落的游戏物体，还定义了ScoreHit（）得分。主要解决海上下落问题，此脚本具有通用性。

using UnityEngine;
using System.Collections.Generic;

public class BallCreator : MonoBehaviour 
{
    // the ball prefab. @note MUST be attached
    public GameObject prefab;
  
   

    // the object we create the balls near @note MUST be attached.
    public Transform where;

    // holds the player mapper (used to find out if we have a target player).
    public NIPlayerManager m_playerManager;

    // the time to create the next ball
   //private float m_timeToCreateNextBall;
    public float m_timeToCreateNextBall;
    // The number of balls the user hit (used for scoring)
    private int m_numBallsHit = 0;
    // The number of balls created (used for scoring)
   // private int m_numBallsCreated;
    public int m_numBallsCreated;
    // Marks that the user has scored a hit (used for scoring).
    // 

    
    public void ScoreHit()
    {
        m_numBallsHit++;
    }

	// mono-behavior initialization
        public void Start () {
        m_numBallsHit = 0;
        m_numBallsCreated = 0;
        m_timeToCreateNextBall = 0;
        if(m_playerManager==null)
            m_playerManager = FindObjectOfType(typeof(NIPlayerManager)) as NIPlayerManager;
	}
	
	// mono-behavior Update is called once per frame
	public void Update () 
    {
        if (Time.time < m_timeToCreateNextBall)
            return; // we created a ball very recently, wait.
        if (m_playerManager == null)
            return; // this means we don't even have a plyer manager.
        NISelectedPlayer player = m_playerManager.GetPlayer(0);
        if (player == null || player.Valid == false || player.Tracking == false)
            return; // this means we don't have a calibrated user
        if (SkeletonGuiControl.m_mode == SkeletonGuiControl.SkeletonGUIModes.GUIMode)
            return; // we don't throw balls while in GUI mode.

        // now we know we should throw a ball. We first figure out where (a random around the
        // x axis of the "where" transform and a constant modifier on the y and z).
        Vector3 pos = where.position;
        pos.x += Random.Range(- 2.0f, 2.0f);
        pos.y += 8.0f;
        pos.z += 2.1f;
 
        // create the ball
        Instantiate(prefab, pos,  Quaternion.identity);
       
       

        m_numBallsCreated++;
        // we set the time for the next ball. The time itself depends on how many balls were created 
        // (the more balls, the less time on average).
        float maxTime = 5.0f;
        float minTime = 1.0f;
        if (m_numBallsCreated > 15)
            maxTime = 4.0f;
        if (m_numBallsCreated > 30)
            maxTime = 3.0f;
        if (m_numBallsCreated > 45)
            minTime = 0.5f;
        if (m_numBallsCreated > 85)
            maxTime = 2.0f;
        m_timeToCreateNextBall = Time.time + Random.Range(minTime,maxTime);
	}


    // mono-behavior OnGUI shows the scoring
 
   void OnGUI()
    {
        if (SkeletonGuiControl.m_mode == SkeletonGuiControl.SkeletonGUIModes.GUIMode)
            return; // we don't draw score while in GUI mode.
        GUI.Box(new Rect(Screen.width/2 -100, 10, 200, 20), "You Hit " + m_numBallsHit + " balls of " + m_numBallsCreated);
       
       
    }

}