第一个U3D 2D游戏的例子，全部自己编写，算是入门用，这里记录一下。
1.首先游戏把层次布置好，这里分为 背景层，游戏层，UI层
背景层 （Background-1）：就是单纯的背景显示作用。
游戏层 （Background-2）: 主角和障碍物。
UI层 (Canvas)：存放UI相关的东西。
背景层 :这里可以随便布置一些背景，就算不布置也无所谓，我这里就随便找了几个图布置了一下。
不过这里需要注意的就是背景层和游戏层的层次关系一定要分好，因为后面的射线需要去区分。
游戏层：游戏层的主要就是障碍物和主角，障碍物分很多，不一定就是单纯的阻碍寻找的，这里指的障碍物是所以能够碰撞产生效果的。
先讲解主角：主角要添加一个Animator，用来控制主角的动画状态。
然后给主角添加一些组件。
主角的运动脚本：
NarutoMove.cs
using UnityEngine;
using System.Collections; public class NarutoMove : MonoBehaviour {
private float moveSpeed;
private bool grounded = false;
public Transform Line_floor;
private bool jump = false; //角色的跳起
private float jumpy = 200f;
private Animator Nurutoanimator;
public AudioClip JumpMusic;//跳跃音频
private AudioSource audio;
// Use this for initialization
void Start () {
Nurutoanimator = this.GetComponent<Animator>();
audio = Camera.main.GetComponent<AudioSource>();
} // Update is called once per frame
void Update () {
float inputx = Input.GetAxis("Horizontal"); //获得水平移动
float inputy = Input.GetAxis("Vertical"); //获得垂直移动 if ((Input.GetKey(KeyCode.A) || Input.GetKey(KeyCode.D)) && (!Input.GetKey(KeyCode.W) && !Input.GetKey(KeyCode.S)))
{
//为反反向
if (inputx <)
{
this.transform.rotation = Quaternion.Euler(, -, );
moveSpeed = -2f;
}else {
this.transform.rotation = Quaternion.Euler(, , );
moveSpeed = 2f;
}
// this.transform.Translate(new Vector3(1, 0, 0)* moveSpeed * Time.deltaTime);
this.transform.Translate(inputx * moveSpeed * Time.deltaTime, inputy * moveSpeed * Time.deltaTime, );
//this.transform.Rotate(new Vector3(inputx * 180, 0, 0));
Nurutoanimator.SetBool("RunFlg", true);
}
else
{
Nurutoanimator.SetBool("RunFlg", false);
} Debug.DrawLine(transform.position, Line_floor.transform.position, Color.red, 1f);
//与地面接触为真，才能够进行跳跃
grounded = Physics2D.Linecast(transform.position, Line_floor.transform.position, << LayerMask.NameToLayer("Ground")); if (grounded && Input.GetKeyDown(KeyCode.J))
{
jump = true; //设置角色的起跳功能
if (jump == true)
{
Musiplay(audio,JumpMusic);
Nurutoanimator.SetBool("RunJumpFlg", true);
// AudioSource.PlayClipAtPoint(jumpclips, gameObject.transform.position); 角色跳跃音效
gameObject.GetComponent<Rigidbody2D>().AddForce(new Vector2(1f, jumpy)); //添加一个向上Y的力
//hero.AddForce(new Vector2(0f,1000f));
jump = false;
grounded = false;
}
}
else {
Nurutoanimator.SetBool("RunJumpFlg", false);
} }
//播放跳跃音乐
void Musiplay(AudioSource audio, AudioClip clip) {
audio.volume = 1f;
audio.PlayOneShot(clip);
audio.volume = 0.2f;
}
}
Health.cs主角的血量控制脚本
using UnityEngine;
using System.Collections;
using UnityEngine.UI; public class Health : MonoBehaviour { public int Hp;
private Slider slider;
private Text time;
private int HpCnt = ;
// Use this for initialization public float fireRate = 3f;//冷却时间
private float nextFire = 0.0f;
void Start () {
//this.GetComponent<text
slider = GameObject.FindGameObjectWithTag("Hp").GetComponent<Slider>();
time = GameObject.FindGameObjectWithTag("Time").GetComponent<Text>(); } // Update is called once per frame
void Update () {
time.text = Time.time.ToString(); CutHp();
}
//每隔一定的时间2s会减少2滴血
public void CutHp() {
//冷却时间
//最开始Time.time ==0 nextFire==3 所以3S过后，Time.time > nextFire
if (Time.time > nextFire)
{
nextFire = Time.time + fireRate;
Hp = Hp - ;
slider.value = Hp;
if (Hp <= )
{
Application.LoadLevel("GameOver");
Destroy(this.gameObject);
}
}
}
public void AddHP(int damageCount,int HPCount) { Hp += damageCount;
if(Hp >= HPCount){
Hp = HPCount;
}
slider.value = Hp;
if (Hp <=)
{
Destroy(this.gameObject);
}
} void OnCollisionEnter2D(Collision2D collision)
{
AddHealth foodHealth = collision.collider.gameObject.GetComponent<AddHealth>();
if (foodHealth != null)
{
AddHP(foodHealth.AddTime, HpCnt);
Destroy(foodHealth.gameObject);
} } }
游戏层中的障碍物:
障碍物也就具有个重力和碰撞器属性，用来阻止主角通过。
游戏层中的水果:
用来给主角加血液，创建一个空物体。然后添加一个脚本，给里面指定一些预置体。
FoodColltor.cs
using UnityEngine;
using System.Collections; public class FoodColltor : MonoBehaviour { public GameObject[] Foods;
private int FoodType;
private float fireRate = 5.0f;//冷却时间
private float nextFire = 0.0f;//定位时间基准
private Transform Playertransform;
private float deathTime = 6.0f;
// Use this for initialization
void Start () {
//得到玩家的坐标
Playertransform = GameObject.FindGameObjectWithTag("Player").transform;
} // Update is called once per frame
void Update () {
//在一定的时间生成水果，和在一定的时间删除水果
FoodTimeColltor();
}
//每隔一定的时间，3个水果
void FoodTimeColltor() {
if (Time.time > nextFire)
{
nextFire = Time.time + fireRate;
RandomCreateFood();
}
}
//随机生成水果
public void RandomCreateFood(int FoodNum) { for (int i = ; i < FoodNum; i++)
{
FoodType = Random.Range(, Foods.Length);
Vector2 foodPosition = new Vector2(Playertransform.position.x + Random.Range(, ), transform.position.y + Random.Range(,0.8f));
GameObject food = GameObject.Instantiate(Foods[FoodType], foodPosition, Quaternion.Euler(new Vector3(, , ))) as GameObject;
food.transform.parent = this.transform; //设定水果的父游戏对象
this.FooddDeath(food);
} } //水果的死亡，到一定的时间后对自动死亡
public void FooddDeath(GameObject food) {
Destroy(food, deathTime);
} }
最后给相机加一个跟随主角运动脚本。
CameraMove.cs
using UnityEngine;
using System.Collections; public class CameraMove : MonoBehaviour { private Transform Playertransform;
// Use this for initialization
void Start () {
//获得游戏玩家对象
Playertransform = GameObject.FindGameObjectWithTag("Player").transform;
} // Update is called once per frame
void LateUpdate () {
//将游戏对象的坐标赋给相机的坐标
//transform.position = new Vector3(Playertransform.position.x, -1.0f, -3.5f); 会稍微出现卡顿的现象
// transform.position = Playertransform.position
transform.position = new Vector2(Playertransform.position.x+2f, -0.1f);
}
}
游戏：http://pan.baidu.com/s/1hsIxUug
源码：