Unity 飞机的子弹轨迹

最近公司在开发一款儿童打飞机游戏.  策划跟我说能在子弹上加上一些轨迹就好了.  比如 旋转 左右移动呀.然后它就很愉快的跑去截其他游戏的图啦。。。

我看见图的时候,

解决方案:

1.   使用牛逼的算法,实现子弹轨迹的移动(第一种应该是正确的解决方案)

2.   发射子弹次数 + 前后移动 + 左右移动 + 围绕某点旋转 + 自身旋转 = 子弹轨迹.  采用组合方式实现

目前采用第二种方式:

我们来看下子弹,两个齿轮会绕着中心旋转, 并且向下移动. ( 围绕某点旋转 +  自身旋转 + 前后移动 = 实现效果)

子弹的GameObject节点层次关系: (此结构和任意组合,但不要把全部功能放在同一个节点上. =。=这样理不清还会受到干扰)

前后移动节点(看两个齿轮中心点向下移动)

左右移动节点(无这个功能,无需开启脚本)

围绕父节点旋转节点(两个此轮围绕中心旋转)

自身旋转节点(比如齿轮它自身会旋转)

下面的子弹实现方式: 自身旋转 + 左右移动 + 上下移动 = 实现效果

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代码区域:

左右移动脚本:

using UnityEngine;
using System.Collections;

namespace Bullet
{
    /// <summary>
    /// 子弹横向左右移动
    /// </summary>
    public class BulletHorizontal : MonoBehaviour
    {
        public bool isLeft;                 //是否向左移动
        public float moveLocation;          //移动的位置
        public float speed;                 //移动速度
        private Vector3 leftPosition;       //左边的目标点
        private Vector3 rightPosition;      //右边的目标点

        void Awake()
        {
            leftPosition = new Vector3(transform.localPosition.x - moveLocation, transform.localPosition.y, transform.localPosition.z);
            rightPosition = new Vector3(transform.localPosition.x + moveLocation, transform.localPosition.y, transform.localPosition.z);
        }

        void Update()
        {

            if (isLeft)
            {
                transform.localPosition += (Vector3.right * speed * Time.deltaTime);
                //transform.Translate(Vector3.right * speed * Time.deltaTime);

                if (transform.localPosition.x >= rightPosition.x)
                {
                    isLeft = !isLeft;
                }
            }
            else
            {
                transform.localPosition += (Vector3.left * speed * Time.deltaTime);
                //transform.Translate(Vector3.left * speed * Time.deltaTime);

                if (transform.localPosition.x <= leftPosition.x)
                {
                    isLeft = !isLeft;
                }
            }
        }
    }
}

子弹旋转脚本:

using UnityEngine;
using System.Collections;
using BearGame;

namespace Bullet
{
    /// <summary>
    /// 子弹旋转
    /// </summary>
    public class BulletRotate : MonoBehaviour
    {
        public RotationDirection rotationDirection;
        public float speed;
        public Transform rotateNode;

        public void Update()
        {
            if (rotateNode != null)
            {
                //围绕某一节点旋转
                switch (rotationDirection)
                {
                    case RotationDirection.Left:
                        this.transform.RotateAround(rotateNode.transform.position, Vector3.forward, speed);
                        break;
                    case RotationDirection.Right:
                        this.transform.RotateAround(rotateNode.transform.position, Vector3.forward, -(speed));
                        break;
                }
            }
            else
            {
                //自身旋转
                switch (rotationDirection)
                {
                    case RotationDirection.Left:
                        this.transform.Rotate(Vector3.forward, speed);
                        break;
                    case RotationDirection.Right:
                        this.transform.Rotate(Vector3.forward, -(speed));
                        break;
                }
            }
        }
    }

    /// <summary>
    /// 旋转的方向
    /// </summary>
    public enum RotationDirection
    {
        Left,
        None,
        Right
    }
}

子弹前后移动:

using UnityEngine;
using System.Collections;
using BearGame;

namespace Bullet
{
    /// <summary>
    /// 子弹前后移动
    /// </summary>
    public class BulletVertical : MonoBehaviour
    {
        public float speed = 0;
        public BulletDirectionEnum direction;
        private Vector3 dir;

        public delegate void BulletOutScreen(GameObject gameObject);
        /// <summary>
        /// 子弹越屏之后,触发的事件,用于销毁子弹
        /// </summary>
        /// <param name="gameObject"></param>
        public static event BulletOutScreen OnBulletDestroy;

        void Start()
        {
            switch (direction)
            {
                case BulletDirectionEnum.Up:
                    dir = Vector3.up;
                    break;
                case BulletDirectionEnum.Bottom:
                    dir = -Vector3.up;
                    break;
                case BulletDirectionEnum.Left:
                    dir = Vector3.left;
                    break;
                case BulletDirectionEnum.Right:
                    dir = Vector3.right;
                    break;
            }
        }

        void Update()
        {    

                transform.Translate(dir * speed * Time.deltaTime);
                if (transform.localPosition.y > Screen.height)
                {
                    transform.gameObject.SetActive(false);
                    //调用子弹出屏幕事件

                   }     

        }
    }

    /// <summary>
    /// 子弹移动的方向
    /// </summary>
    public enum BulletDirectionEnum
    {
        Up,
        Bottom,
        Left,
        Right,
        None
    }
}

子弹轨迹总体脚本控制:

using UnityEngine;
using System.Collections;
using BearGame;

namespace Bullet
{
    public class BulletMode : MonoBehaviour
    {
        /// <summary>
        /// 子弹预设
        /// </summary>
        private GameObject bullet;

        /// <summary>
        /// 子弹的名称
        /// </summary>
        private string bulletName;

        /// <summary>
        /// 子弹爆炸特效
        /// </summary>
        public Transform bulletEffect;

        /// <summary>
        /// 向左右移动
        /// </summary>
        public BulletHorizontal bulletHorizontal;

        /// <summary>
        /// 向前后移动
        /// </summary>
        public BulletVertical bulletForce;

        /// <summary>
        /// 围绕某一个点旋转
        /// </summary>
        public BulletRotate bulletRotateARound;

        /// <summary>
        /// 围绕自身旋转
        /// </summary>
        public BulletRotate bulletRotateOneself;

        #region 属性
        public GameObject Bullet
        {
            get
            {
                if (bullet == null)
                {
                    bullet = this.gameObject;
                }
                return bullet;
            }
            set { bullet = value; }
        }
        public string BulletName
        {
            get
            {
                if (string.IsNullOrEmpty(bulletName))
                {
                    bulletName = this.gameObject.name;
                }
                return bulletName;
            }
            set { bulletName = value; }
        }
        #endregion

        public void TrunOFFALLScript()
        {
            if (bulletRotateOneself != null) bulletRotateOneself.enabled = false;
            if (bulletRotateARound != null) bulletRotateARound.enabled = false;
            if (bulletForce != null) bulletForce.enabled = false;
            if (bulletHorizontal != null) bulletHorizontal.enabled = false;

        }

        public void TrunOpenALLScript()
        {
            if (bulletRotateOneself != null) bulletRotateOneself.enabled = true;
            if (bulletRotateARound != null) bulletRotateARound.enabled = true;
            if (bulletForce != null) bulletForce.enabled = true;
            if (bulletHorizontal != null) bulletHorizontal.enabled = true;
        }

    }

}