Unity3d-Patrol

Unity3d-Patrol

游戏设计要求

• 创建一个地图和若干巡逻兵(使用动画)；
• 每个巡逻兵走一个3~5个边的凸多边型，位置数据是相对地址。即每次确定下一个目标位置，用自己当前位置为原点计算；
• 巡逻兵碰撞到障碍物，则会自动选下一个点为目标；
• 巡逻兵在设定范围内感知到玩家，会自动追击玩家；
• 失去玩家目标后，继续巡逻；
• 计分：玩家每次甩掉一个巡逻兵计一分，与巡逻兵碰撞游戏结束；

视频链接

UML图

• 这次作业的动作方面比较简单，就没有用动作管理器，直接写了挂在GameObject上
• 观察者模式体现在分数的增加上，即FirstController观察GameEventManager

关键代码

GameEventManager.cs

使用了观察者模式，将脚本挂在Trigger上，如果Hero与通道发生了碰撞，则发布消息，通知FirstController加分

public class GameEventManager : MonoBehaviour {  
	public delegate void AddScore();//委托  
	public static event AddScore addScore;//事件  
	// Use this for initialization  


	void OnTriggerEnter(Collider collider)  
	{  
		if (collider.gameObject.name == "Hero") {  
			Debug.Log ("hit by hero");
			add ();
		}
	}  


	void add()  
	{  
		if(addScore != null)  
		{  
			addScore();
		}  
	}  
}  

PatrolAction.cs

• 在Update中判断Hero是否在自己所巡逻的区间，如果是调用抓捕函数，不是调用巡逻函数
• 抓捕函数参考了师兄的博客，用了MoveTowards()函数，简直不要太方便！
• 巡逻函数随机产生一个在自己负责的区域内的坐标，然后用MoveTowards()函数走向那个坐标，如果临近了该坐标则重新随机产生别的坐标

public class PatrolAction : MonoBehaviour {
	public int index;
	public int dir = 0;
	private float BirthX = 0f;
	private float BirthZ = 0f;
	private double nextFire = 0;
	private FirstController fircon;
	private float max_x;
	private float min_x;
	private float max_z;
	private float min_z;
	private Vector3 disv3;
	// Use this for initialization
	void Start () {
		fircon = (FirstController)Director.getInstance ().currentSceneController;
		index = int.Parse (this.transform.name);
		BirthX = (float)(20 - (index % 3) * 20);
		BirthZ = (float)(20 - (index / 3) * 20);
		max_x = BirthX + 10;
		min_x = BirthX - 10;
		max_z = BirthZ + 10;
		min_z = BirthZ - 10;
		disv3 = new Vector3 (Random.Range(min_x + 2, max_x - 2), 0.6f, Random.Range(min_z + 2, max_z - 2));
	}
	// Update is called once per frame
	void FixedUpdate () {
		if (fircon.gamestate != GameState.END) {
			if (Time.time > nextFire) {
				float x = this.transform.position.x;
				float z = this.transform.position.z;
				//judge if hero is in patrol's block
				if (index == fircon.hero_index) {
					Catch ();
				} else {
					Patrol (x, z);
				}
				nextFire = Time.time + 0.5;
			}
		}
	}
	public void Catch (){
		transform.position = Vector3.MoveTowards (this.transform.position, fircon.Hero.transform.position, 1f);
	}
	public void Patrol(float x, float z){
		if ((this.transform.position.x < disv3.x + 1) && (this.transform.position.x > disv3.x - 1)&&
			(this.transform.position.z < disv3.z + 1) && (this.transform.position.z > disv3.z - 1)) {
			disv3 = new Vector3 (Random.Range(min_x + 2, max_x - 2), 0.6f, Random.Range(min_z + 2, max_z - 2));
		} else {
			transform.position = Vector3.MoveTowards (this.transform.position, disv3, 1f);
		}
	}
		
	void OnCollisionEnter(Collision collider)  
	{  
		if (collider.gameObject.name == "Hero") {
			Debug.Log ("!!!");
			fircon.gamestate = GameState.END;
		}
	}  
}

UserActionController.cs

管理UI和控制Hero移动

public class UserActionController : MonoBehaviour {

	private FirstController action;
	public float speed;
	public GameObject hero;

	// Use this for initialization
	void Start () {
		action = Director.getInstance ().currentSceneController as FirstController;
		hero = action.Hero;
		speed = 15f;
	}

	void OnGUI(){
		if (action.getGamestate () == GameState.INGAME) {
			GUI.Label (new Rect (0, 0, 80, 40), "Score:" + action.getScore().ToString ());
			if(GUI.Button(new Rect(0, 50, 80, 40), "Pause")){
				action.Pause ();
			}
			if(GUI.Button(new Rect(0, 100, 80, 40), "End")){
				action.End ();
			}
		}
		else if (action.getGamestate () == GameState.END) {
			GUI.Label (new Rect(0, 100, 80, 40), "GameOver!!");
			GUI.Label (new Rect (0, 0, 80, 40), "Score:" + action.getScore().ToString ());
			if(GUI.Button(new Rect(0, 50, 80, 40), "Start")){
				action.Begin ();
			}
		}
		else if (action.getGamestate () == GameState.PAUSE) {
			GUI.Label (new Rect (0, 0, 80, 40), "Score:" + action.getScore().ToString ());
			if(GUI.Button(new Rect(0, 50, 80, 40), "Go on")){
				action.Begin ();
			}
			if(GUI.Button(new Rect(0, 100, 80, 40), "End")){
				action.End ();
			}
		}
	}

	void Update(){
		if (action.getGamestate () == GameState.INGAME) {
			float translationX = Input.GetAxis ("Horizontal") * speed;
			float translationZ = Input.GetAxis ("Vertical") * speed;
			translationX *= Time.deltaTime;
			translationZ *= Time.deltaTime;
			hero.transform.Translate (translationX, 0, 0);
			hero.transform.Translate (0, 0, translationZ);
		}
	}
}

其他的也没有什么啦，什么FirstController、Director等等，都和之前的差不多。

GitHub链接