我的第一次Unity游戏开发历程

学习unity3d一个多月了，也做几个简单demo，但都是跟教程来做的。这次为了找一份实习，下定决心做一个游戏的demo，虽然没什么内容，极易通关，优化也差，各种bug。

But when you being the lowest，whatever you do is up。

游戏名：侏罗纪公园

游戏类型：FPS

故事概述：你突然出现一处充满霸王龙的神秘森林，你必须杀死它们中的头目：巨型霸王龙才能生存下去。

制作历程：

1.作图构思，写预览图

2.根据构图设计UI，场景

3.收集资源，制作地形，场景

4.添加资源，编写代码实现功能

5.第一阶段完成：地形，天空盒，恐龙模型

6.添加代码到相应gameoject实现功能。

暂时不展示成果。

贴出核心代码并记录所遇到的问题。

DianusorAI：

using UnityEngine; using System.Collections; public class DinosaurAI : Unit { public GameObject enemy; private GameObject myenemy; private UnityEngine.AI.NavMeshAgent nam; public float rotateSpeed; // Use this for initialization void Start () { base.Start (); myenemy= Instantiate (enemy, transform.position, transform.rotation)as GameObject; } // Update is called once per frame void Update () { nam=GetComponent<UnityEngine.AI.NavMeshAgent>(); RotateTo (); nam.SetDestination(myenemy.transform.position); } void RotateTo(){ Vector3 targetdir = transform.position - myenemy.transform.position; Vector3 newdir = Vector3.RotateTowards (transform.forward,targetdir,rotateSpeed*Time.deltaTime,0.0f); transform.rotation = Quaternion.LookRotation (newdir); } } shell：

using UnityEngine; using System.Collections; public class shell2 : MonoBehaviour { public int damage; public float explosionRadius; public GameObject explosionEffect; public float explosiontime; void OnCollisionEnter(){ GameObject g= Instantiate (explosionEffect, transform.position, transform.rotation)as GameObject; Destroy (gameObject); Destroy (g, explosiontime); Collider[] cols = Physics.OverlapSphere (transform.position,explosionRadius); if (cols.Length > 0) { for(int i=0;i<cols.Length;i++){ Unit u=cols[i].GetComponent<Unit>(); if(u!=null){ u.ApplyDamage(damage); } } } } }

shootboom：

using UnityEngine; using System.Collections; public class shootboom : MonoBehaviour { public Transform shootPoint; public GameObject shell; public float shootSpeed; private AudioSource audioSource; // Use this for initialization void Start () { audioSource = GetComponent<AudioSource> (); } // Update is called once per frame void Update () { if (Input.GetMouseButtonDown(0)) { Shoot(); } } public void Shoot(){ GameObject newsheel =Instantiate (shell, shootPoint.position, shootPoint.rotation)as GameObject; Rigidbody r = newsheel.GetComponent<Rigidbody> (); r.velocity = shootPoint.forward * shootSpeed; audioSource.Play (); } }

Unit：

using UnityEngine; using System.Collections; public class Unit : MonoBehaviour { public int health=1000; private int curhealth; public GameObject deadEffect; // Use this for initialization public void Start () { this.curhealth = this.health; } public int getcurhea(){ return this.curhealth; } // Update is called once per frame void Update () { } public void ApplyDamage(int damage){ if (curhealth > damage) { curhealth -= damage; } else { Destruct(); } } public void Destruct(){ if(deadEffect!=null){ Instantiate(deadEffect,transform.position,transform.rotation); } Destroy (gameObject); } } welcomeCG：

using UnityEngine; using System.Collections; public class Weclomecg : MonoBehaviour { public GameObject world; public GameObject canvas; // Use this for initialization void Start () { StartCoroutine(WaitAndPrint(2.0F)); Destroy (canvas); } // Update is called once per frame void Update () { } IEnumerator WaitAndPrint(float waitTime) { yield return new WaitForSeconds(waitTime); canvas.SetActive (false); world.SetActive (true); } }

收获：

1.延迟执行可用Invoke 延迟等待执行也可用yield return

void Start () { StartCoroutine(WaitAndPrint(2.0F));   Destroy (canvas); }

IEnumerator WaitAndPrint(float waitTime)   {   yield return new WaitForSeconds(waitTime);   canvas.SetActive (false); world.SetActive (true); }   

2.在制作游戏过程中，很多单位都会拥有的值可存放在一个Unit基类中，并去继承它。

3.实现射击通常是用射线检测。我这里用产生子弹，子弹碰撞到物体会检测一定范围内的所有碰撞体，用数组去获取它们，然后逐个判断是否为敌人，是则造成伤害值。

该方法特别适用于炸弹爆炸。   详情见shell中代码。

4.给某个物体加一个速度。例子：

GameObject newsheel =Instantiate (shell, shootPoint.position, shootPoint.rotation)as GameObject; Rigidbody r = newsheel.GetComponent<Rigidbody> ();

r.velocity = shootPoint.forward * shootSpeed;

5.实现某个物体随机走动或者寻敌。

不寻敌的话可以设置该物体的transform不断改变，使用random函数。

否则首先要在Navigation中烘焙。然后给该物体添加NavMeshAgent。挂上脚本即可。不寻敌的话使用Random即可实现。我在此游戏中创造一个随机物体后setdestinatin

脚本中核心代码（实现寻敌）

void Update () { nam=GetComponent<UnityEngine.AI.NavMeshAgent>(); RotateTo (); nam.SetDestination(myenemy.transform.position); } void RotateTo(){ Vector3 targetdir = transform.position - myenemy.transform.position; Vector3 newdir = Vector3.RotateTowards (transform.forward,targetdir,rotateSpeed*Time.deltaTime,0.0f); transform.rotation = Quaternion.LookRotation (newdir); }

6.让模型播放动画，需在导入unity前给模型配备动画，在用unity中添加AnimationController，并设置状态机。附加到模型上，模型即可播放动画， 7.添加fog效果后，会影响某些特效的渲染。

效果图：

游戏试玩：

百度云盘：http://pan.baidu.com/s/1o8LiLZG