#【Unity】HtcVive手把API使用

以下是將SteamVR的SDK載入後引用api所寫的控制

using UnityEngine;
using System.Collections;
//偵測手把功能的腳本 這個腳本掛到手把上（controler（right）和controler（left））上  
public class HtcViveAPI : MonoBehaviour {
    //手把  
    SteamVR_TrackedObject trackdeObjec;

    void Awake () {
        //抓取手把上面的組件  
        trackdeObjec = GetComponent<steamvr_trackedobject> ();
    }
    void Start () {

    }
    void FixedUpdate () {
        //抓取手把輸入  
        var device = SteamVR_Controller.Input ((int)trackdeObjec.index);
        //以下是SDK中複製出来的按键列表  
        /* public class ButtonMask 
           { 
               public const ulong System = (1ul << (int)EVRButtonId.k_EButton_System); // reserved 
               public const ulong ApplicationMenu = (1ul << (int)EVRButtonId.k_EButton_ApplicationMenu); 
               public const ulong Grip = (1ul << (int)EVRButtonId.k_EButton_Grip); 
               public const ulong Axis0 = (1ul << (int)EVRButtonId.k_EButton_Axis0); 
               public const ulong Axis1 = (1ul << (int)EVRButtonId.k_EButton_Axis1); 
               public const ulong Axis2 = (1ul << (int)EVRButtonId.k_EButton_Axis2); 
               public const ulong Axis3 = (1ul << (int)EVRButtonId.k_EButton_Axis3); 
               public const ulong Axis4 = (1ul << (int)EVRButtonId.k_EButton_Axis4); 
               public const ulong Touchpad = (1ul << (int)EVRButtonId.k_EButton_SteamVR_Touchpad); 
               public const ulong Trigger = (1ul << (int)EVRButtonId.k_EButton_SteamVR_Trigger); 
           } 
           */

        //同樣是三種按鍵方式 
        if ( device.GetTouch (SteamVR_Controller.ButtonMask.Trigger) ) {
            //右手震動  
            //拉弓類似操作應該就是按住trigger（扳機）gettouch時持續調用震動方法模擬弓弦繃緊的感覺。
            var deviceIndex2 = SteamVR_Controller.GetDeviceIndex (SteamVR_Controller.DeviceRelation.Rightmost);
            SteamVR_Controller.Input (deviceIndex2).TriggerHapticPulse (500);
            Debug.Log ("按了trigger扳機鍵");
        }
        if ( device.GetTouchDown (SteamVR_Controller.ButtonMask.Trigger) ) {
            Debug.Log ("按下了trigger扳機鍵");
        }
        if ( device.GetTouchUp (SteamVR_Controller.ButtonMask.Trigger) ) {
            //左手震动  
            var deviceIndex = SteamVR_Controller.GetDeviceIndex (SteamVR_Controller.DeviceRelation.Leftmost);
            SteamVR_Controller.Input (deviceIndex).TriggerHapticPulse (3000);

            //右手震动  
            var deviceIndex1 = SteamVR_Controller.GetDeviceIndex (SteamVR_Controller.DeviceRelation.Rightmost);
            SteamVR_Controller.Input (deviceIndex1).TriggerHapticPulse (3000);

            Debug.Log ("鬆開了trigger扳機鍵");
        }

        //這三種也能檢測到 後面不做贅述  
        if ( device.GetPressDown (SteamVR_Controller.ButtonMask.Trigger) ) {
            Debug.Log ("用press按下了 trigger 扳機鍵");
        }
        if ( device.GetPress (SteamVR_Controller.ButtonMask.Trigger) ) {
            Debug.Log ("用press按了 trigger 扳機鍵");
        }
        if ( device.GetPressUp (SteamVR_Controller.ButtonMask.Trigger) ) {
            Debug.Log ("用press鬆開了 trigger 扳機鍵");
        }

        // system鍵 圓盤下面那個鍵   
        // reserved 為Steam系統保留,用來調出Steam系統菜單 因此貌似自己加的功能沒啥用
        if ( device.GetTouchDown (SteamVR_Controller.ButtonMask.System) ) {
            Debug.Log ("按下了 system 系統按鈕/Steam");
        }
        if ( device.GetPressDown (SteamVR_Controller.ButtonMask.System) ) {
            Debug.Log ("用press按下了 System 系統按鈕/Steam");
        }

        //Application Menu鍵 帶菜單標誌的那個按鍵(在方向圓盤上面)
        if ( device.GetTouchDown (SteamVR_Controller.ButtonMask.ApplicationMenu) ) {
            Debug.Log ("按下了 Application Menu 菜單鍵");
        }
        if ( device.GetPressDown (SteamVR_Controller.ButtonMask.ApplicationMenu) ) {
            Debug.Log ("用press按下了 Application Menu 菜單鍵");
        }

        //Grip鍵 兩側的鍵 （vive僱傭兵遊戲中的換彈鍵），每個手柄左右各一功能相同，同一手柄兩個鍵是一個鍵。
        if ( device.GetTouchDown (SteamVR_Controller.ButtonMask.Grip) ) {
            Debug.Log ("按下了Grip");
        }
        if ( device.GetPressDown (SteamVR_Controller.ButtonMask.Grip) ) {
            Debug.Log ("用press按下了Grip");
        }

        //Axis0键 與圓盤有交互  
        //触摸触发  
        if ( device.GetTouchDown (SteamVR_Controller.ButtonMask.Axis0) ) {
            Debug.Log ("按下了 Axis0 方向 ");
        }
        //按動觸發  
        if ( device.GetPressDown (SteamVR_Controller.ButtonMask.Axis0) ) {
            Debug.Log ("用press按下了 Axis0 方向");
        }

        //Axis1鍵 目前未發現按鍵位置  
        //觸摸觸發  
        if ( device.GetTouchDown (SteamVR_Controller.ButtonMask.Axis1) ) {
            Debug.Log ("按下了 Axis1");
        }
        //按動觸發 
        if ( device.GetPressDown (SteamVR_Controller.ButtonMask.Axis1) ) {
            Debug.Log ("用press按下了 Axis1");
        }

        //Axis2鍵 目前未發現按鍵位置  
        //觸摸觸發  
        if ( device.GetTouchDown (SteamVR_Controller.ButtonMask.Axis2) ) {
            Debug.Log ("按下了 Axis2");
        }
        //按動觸發  
        if ( device.GetPressDown (SteamVR_Controller.ButtonMask.Axis2) ) {
            Debug.Log ("用press按下了Axis2");
        }

        //Axis3鍵 目前未發現按鍵位置  
        //觸摸觸發   
        if ( device.GetTouchDown (SteamVR_Controller.ButtonMask.Axis3) ) {
            Debug.Log ("按下了Axis3");
        }
        //按動觸發  
        if ( device.GetPressDown (SteamVR_Controller.ButtonMask.Axis3) ) {
            Debug.Log ("用press按下了 Axis3");
        }

        //Axis4鍵 目前未發現按鍵位置  
        //觸摸觸發  
        if ( device.GetTouchDown (SteamVR_Controller.ButtonMask.Axis4) ) {
            Debug.Log ("按下了Axis4");
        }
        //按動觸發  
        if ( device.GetPressDown (SteamVR_Controller.ButtonMask.Axis4) ) {
            Debug.Log ("用press按下了 Axis4");
        }

        //方向圓盤：  
        //這裡開始區分了press檢測與touch檢測的不同之處，圓盤可以觸摸，顧名思義，touch檢測的是觸摸，press檢測的是按動
        //鍵與圓盤有交互與圓盤有關
        //觸摸觸發  
        if ( device.GetTouchDown (SteamVR_Controller.ButtonMask.Axis0) ) {
            Debug.Log ("按下了Axis0 方向 ");
        }
        //按動觸發  
        if ( device.GetPressDown (SteamVR_Controller.ButtonMask.Axis0) ) {
            Debug.Log ("用press按下了 Axis0 方向");
        }

        //Axis1鍵 目前未發現按鍵位置   
        //觸摸觸發 
        if ( device.GetTouchDown (SteamVR_Controller.ButtonMask.Axis1) ) {
            Debug.Log ("按下了 Axis1 ");
        }
        //按動觸發   
        if ( device.GetPressDown (SteamVR_Controller.ButtonMask.Axis1) ) {
            Debug.Log ("用press按下了 Axis1 ");
        }

        //Axis2鍵 目前未發現按鍵位置  
        //觸摸觸發  
        if ( device.GetTouchDown (SteamVR_Controller.ButtonMask.Axis2) ) {
            Debug.Log ("按下了 Axis2 ");
        }
        //按動觸發  
        if ( device.GetPressDown (SteamVR_Controller.ButtonMask.Axis2) ) {
            Debug.Log ("用press按下了 Axis2 ");
        }

        //Axis3鍵 目前未發現按鍵位置   
        //觸摸觸發  
        if ( device.GetTouchDown (SteamVR_Controller.ButtonMask.Axis3) ) {
            Debug.Log ("按下了 Axis3 ");
        }
        //按動觸發  
        if ( device.GetPressDown (SteamVR_Controller.ButtonMask.Axis3) ) {
            Debug.Log ("用press按下了 Axis3 ");
        }

        //Axis4鍵 目前未發現按鍵位置   
        //觸摸觸發  
        if ( device.GetTouchDown (SteamVR_Controller.ButtonMask.Axis4) ) {
            Debug.Log ("按下了 Axis4 ");
        }
        //按動觸發  
        if ( device.GetPressDown (SteamVR_Controller.ButtonMask.Axis4) ) {
            Debug.Log ("用press按下了 Axis4 ");
        }


        //Touchpad鍵 圓盤交互  
        //觸摸觸發  
        if ( device.GetTouchDown (SteamVR_Controller.ButtonMask.Touchpad) ) {
            Debug.Log ("按下了 Touchpad ");

            //方法返回一個坐標 接觸圓盤位置
            Vector2 cc = device.GetAxis ();
            Debug.Log (cc);
            //例子：圓盤分成上下左右  
            float jiaodu = VectorAngle (new Vector2 (1, 0), cc);
            Debug.Log (jiaodu);
            //下  
            if ( jiaodu > 45 && jiaodu < 135 ) {
                Debug.Log ("下");
            }
            //上  
            if ( jiaodu < -45 && jiaodu > -135 ) {
                Debug.Log ("上");
            }
            //左  
            if ( ( jiaodu < 180 && jiaodu > 135 ) || ( jiaodu < -135 && jiaodu > -180 ) ) {
                Debug.Log ("左");
            }
            //右  
            if ( ( jiaodu > 0 && jiaodu < 45 ) || ( jiaodu > -45 && jiaodu < 0 ) ) {
                Debug.Log ("右");
            }
        }
        //按動觸發  
        if ( device.GetPressDown (SteamVR_Controller.ButtonMask.Touchpad) ) {
            Debug.Log ("用press按下了 Touchpad ");
        }

    }

    void Update () {

    }

    //方向圓盤最好配合這個使用 圓盤的.GetAxis()會檢測返回一個二位向量，可用角度劃分圓盤按鍵數量
    //這個函數輸入兩個二維向量會返回一個夾角 180 到 -180 
    float VectorAngle (Vector2 from, Vector2 to) {
        float angle;
        Vector3 cross = Vector3.Cross (from, to);
        angle = Vector2.Angle (from, to);
        return cross.z > 0 ? -angle : angle;
    }
}

VIVE把手上面的控制應該都寫上去了