Unity 手机端 操纵杆的实现

绑定在一个空对象上

指定两个材质图片

一个是操纵杆主体，一个是代表操纵杆方向的小圆点

游戏运行时，就会显示操纵杆

using UnityEngine;
public class PhoneControl : MonoBehaviour
{public Texture Point, Ring;public static float x, y;Vector2 Posi, Pos0, Pos00, Pos_;float RingW, RingH, PointW, PointH;bool Drag;void Start(){Pos00 = Pos0 = Posi = new Vector2(300, 800);RingW = RingH = 400;PointW = PointH = 150;Drag = false;x = y = 0;}void Update(){}void OnGUI(){if (Event.current.type == EventType.MouseDown){//是否需要移动控件Vector2 Posq = Event.current.mousePosition;float vz0;vz0 = (Posq.x - Pos0.x) * (Posq.x - Pos0.x) + (Posq.y - Pos0.y) * (Posq.y - Pos0.y);vz0 = Mathf.Sqrt(vz0);if (vz0 < RingW / 2){Pos0 = Event.current.mousePosition;Drag = true;}}//抬起手指，归位if (Event.current.type == EventType.MouseUp){Drag = false;Pos0 = Pos00;}//拖拽x = 0;y = 0;float vx = 0, vy = 0, vz;Pos_ = Event.current.mousePosition;vz = (Pos_.x - Pos0.x) * (Pos_.x - Pos0.x) + (Pos_.y - Pos0.y) * (Pos_.y - Pos0.y);vz = Mathf.Sqrt(vz);if (Drag) Posi = Pos_;else Posi = Pos0;if (vz > RingW / 2){vx = (Posi.x - Pos0.x) / vz * RingW / 2 + Pos0.x;vy = (Posi.y - Pos0.y) / vz * RingH / 2 + Pos0.y;Posi = new Vector2(vx, vy);}GUI.DrawTexture(new Rect(Posi.x - PointW / 2, Posi.y - PointH / 2, PointW, PointH), Point);GUI.DrawTexture(new Rect(Pos0.x - RingW / 2, Pos0.y - RingH / 2, RingW, RingH), Ring);//外部速度接口if (Drag) Posi = Event.current.mousePosition;else Posi = Pos0;vz = (Posi.x - Pos0.x) * (Posi.x - Pos0.x) + (Posi.y - Pos0.y) * (Posi.y - Pos0.y);vz = Mathf.Sqrt(vz);x = Mathf.Abs(Posi.x - Pos0.x) / (RingW / 2) * (Posi.x - Pos0.x) / vz;y = -Mathf.Abs(Posi.y - Pos0.y) / (RingH / 2) * (Posi.y - Pos0.y) / vz;if (vz == 0) x = y = 0;if (vz > RingW / 2){x = (Posi.x - Pos0.x) / vz;y = -(Posi.y - Pos0.y) / vz;}//其它脚本获得速度方向时，可写作：//gameObject.transform.Translate(Time.deltaTime * Speed * PhoneControl.x, Time.deltaTime * Speed * PhoneControl.y, 0);}
}

玩家脚本调用

        gameObject.transform.Translate(Time.deltaTime * speed * PhoneControl.x, Time.deltaTime * speed * PhoneControl.y, 0);float moveX=0;float moveY=0;//获取运动矢量moveX = PhoneControl.x;moveY = PhoneControl.y;Vector2 moveVector = new Vector2(moveX, moveY);if (moveX!=0||moveY!=0){lookDirection = moveVector;}Vector2 position = transform.position;position.x += moveX * speed * Time.deltaTime;position.y += moveY * speed * Time.deltaTime;transform.position = new Vector2(position.x, position.y);//用刚体移动可以消除画面抖动rbody.MovePosition(position);//为动画集赋值//状态集的切换由运动矢量决定anim.SetFloat("move X",lookDirection.x);anim.SetFloat("move Y",lookDirection.y);anim.SetFloat("runspeed", moveVector.magnitude);//赋值必须与状态集命名一样

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