GameObject 类是Unity场景中所有实体的积累。一个GameObject对象通常由多个组件component组成，且至少含有一个transform组件。
activeSelf 属性 —— GameObject的Active标识
activeInHierarchy 属性的功能是返回GameObject实例在程序运行时的激活状态，它只有当GameObect实例的状态被激活时才会返回true。而且它会受父类对象激活状态的影响。如果其父类至最顶层的对象中有一个对象未被激活，activeInHierarchy就会返回false
using UnityEngine; using System.Collections; public class ActiveSelf_ts : MonoBehaviour { public GameObject cube1, cube2, cube3; void Start () { // 对cube2设置为false，其他设置为true cube1.SetActive(true); cube2.SetActive(false); cube3.SetActive(true); Debug.Log("activeSelf:"); // 尽管cube2被设置为false，但其子类cube3的activeSelf返回值仍然为true Debug.Log("cube1.activeSelf:" + cube1.activeSelf); Debug.Log("cube2.activeSelf:" + cube2.activeSelf); Debug.Log("cube3.activeSelf:" + cube3.activeSelf); Debug.Log("\nactiveInHierarchy:"); // cube2 和 cube3的activeInHierarchy返回值都为false Debug.Log("cube1.activeInHierarchy:" + cube1.activeInHierarchy); Debug.Log("cube2.activeInHierarchy:" + cube2.activeInHierarchy); Debug.Log("cube3.activeInHierarchy:" + cube3.activeInHierarchy); } }
GameObject 构造方法
public GameObject();
public GameObject(string name);
public GameObject(string name,params Type[] components)
using UnityEngine; using System.Collections; public class Constructors_ts : MonoBehaviour { void Start () { // 使用构造函数 GameObject (name : String) GameObject g1 = new GameObject("G1"); g1.AddComponent<Rigidbody>(); // 使用构造函数 GameObject () GameObject g2 = new GameObject(); g2.AddComponent<FixedJoint>(); // 使用构造函数 GameObject (name : String, params components : Type[]) GameObject g3 = new GameObject("G3",typeof(MeshRenderer),typeof(Rigidbody),typeof(SpringJoint)); Debug.Log("g1 name:" + g1.name + "\nPosition:" + g1.transform.position); Debug.Log("g2 name:" + g2.name + "\nPosition:" + g2.transform.position); Debug.Log("g3 name:" + g3.name + "\nPosition:" + g3.transform.position); } }
GameObject 类实例方法
GetComponent 方法 —— 获取组件
public T GetComponent<T>() where T: Component;
public Component GetComponent(string type);
public Component GetComponent(Type type);
using UnityEngine; using System.Collections; public class GetComponent_ts : MonoBehaviour { void Start () { Debug.Log("以下是GetComponent 的相关使用代码。\n GetComponet 方法用来获取当前GameObject中符合Type类型的第一个组件"); //GetComponent (type : Type) Rigidbody rb = GetComponent(typeof(Rigidbody))as Rigidbody; Debug.Log("使用 GetComponent (type : Type) 获取 Rigidbody" + rb.GetInstanceID()); //GetComponent.<T>() rb=GetComponent<Rigidbody>(); Debug.Log("使用 GetComponent.<T>()获取 Rigidbody" + rb.GetInstanceID()); //GetComponent (type : String) rb = GetComponent("Rigidbody") as Rigidbody; Debug.Log("使用 GetComponent (type : String)获取 Rigidbody" + rb.GetInstanceID()); Debug.Log("以下是GetComponentInChildren的相关使用代码。\n GetComponentInChildren 方法来获取当前GameObject的所有子类中符合Type类型的第一个组件"); //GetComponentInChildren (type : Type) rb = GetComponentInChildren(typeof(Rigidbody)) as Rigidbody; Debug.Log("使用GetComponentInChildren (type : Type)获取Rigidbody " + rb.name); //GetComponentInChildren.<T> () rb=GetComponentInChildren<Rigidbody>(); Debug.Log("使用GetComponentInChildren.<T>()获取Rigidbody " + rb.name); //GetComponents (type : Type) Component[] cjs = GetComponents(typeof(ConfigurableJoint)) as Component[]; foreach(ConfigurableJoint cj in cjs){ Debug.Log("使用GetComponents (type : Type)获取ConfigurableJoint " + cj.GetInstanceID()); } //GetComponents.<T> () cjs = GetComponents<ConfigurableJoint>(); foreach (ConfigurableJoint cj in cjs) { Debug.Log("使用GetComponents.<T>()获取ConfigurableJoint " + cj.GetInstanceID()); } //GetComponentsInChildren(type: Type, includeInactive: boolean = false) cjs = GetComponentsInChildren(typeof(ConfigurableJoint), false) as Component[]; foreach (ConfigurableJoint cj in cjs) { Debug.Log("使用GetComponentsInChildren(type: Type, false)获取ConfigurableJoint " + cj.name); } cjs = GetComponentsInChildren(typeof(ConfigurableJoint), true) as Component[]; foreach (ConfigurableJoint cj in cjs) { Debug.Log("使用GetComponentsInChildren(type: Type, true)获取ConfigurableJoint " + cj.name); } //GetComponentsInChildren.<T> (includeInactive : boolean) cjs = GetComponentsInChildren<ConfigurableJoint>(true); foreach (ConfigurableJoint cj in cjs) { Debug.Log("使用GetComponentsInChildren.<T>(includeInactive : boolean)获取ConfigurableJoint " + cj.name); } //GetComponentsInChildren.<T> () cjs = GetComponentsInChildren<ConfigurableJoint>(); foreach (ConfigurableJoint cj in cjs) { Debug.Log("使用GetComponentsInChildren.<T>()获取ConfigurableJoint " + cj.name); } } }
SendMessage 方法：发送消息
和自身同级的物体不会收到消息
SendMessageOptions 有两个可选方式：SendMessageOptions.RequireReceiver 和 SendMessageOptions.DontRequireReceiver 前者要求信息的接收方必须有接收信息的方法，否则程序报错，后者无此要求
BroadcastMessage 向自身以及所有子类发送消息，和自身同级的物体不会收到消息
SendMessageUpwards 方法的功能是向GameObject 自身及其所有父类发送消息，和自身同级的物体不会受到消息
using UnityEngine;
using System.Collections;
public class SendMessageUpward_ts : MonoBehaviour {
void Start () {
// 向父类及自己发送消息
gameObject.SendMessageUpwards("GetChildrenMessage", gameObject.name + ":use SendMessageUpwards send!");
// 向子类及自己发送消息
gameObject.BroadcastMessage ("GetParentMessage ",gameObject.name +":use BroadcastMessage send");
// 向自己发送消息
gameObject.SendMessage ("GetSelfMessage",gameObject.name +" : use SendMessage send");
}
private void GetParentMessage(string str)
{
Debug.Log(gameObject.name + "收到父类发送的消息" + str);
}
private void GetSelfMessage(string str)
{
Debug.Log(gameObject.name + "受到自身发送的消息" + str);
}
private void GetChildrenMessage(string str)
{
Debug.Log(gameObject.name + "受到子类发送的消息" + str);
}
}
CreatePrimitive —— 创建GameObject 对象
静态方法
using UnityEngine; using System.Collections; public class CreatePrimitive_ts : MonoBehaviour { void Start() { // 使用GameObject.CreatePrimitive方法创建 GameObject GameObject g1 = GameObject.CreatePrimitive(PrimitiveType.Sphere); g1.name = "G1"; g1.tag = "sphere_Tag"; // 使用 AddComponent (className : String)添加组件 g1.AddComponent("SpringJoint"); // 使用AddComponent (componentType : Type)添加组件 g1.AddComponent(typeof(GUITexture)); g1.transform.position = Vector3.zero; GameObject g2 = GameObject.CreatePrimitive(PrimitiveType.Sphere); g2.name = "G2"; g2.tag = "sphere_Tag"; // 使用AddComponent.<T>() 添加组件 g2.AddComponent<Rigidbody>(); g2.transform.position = 2.0f * Vector3.right; g2.GetComponent<Rigidbody>().useGravity = false; GameObject g3 = GameObject.CreatePrimitive(PrimitiveType.Sphere); g3.name = "G1"; g3.tag = "sphere_Tag"; g3.transform.position = 4.0f * Vector3.right; // 使用GameObject.Findà类方法获取GameObject，返回符合条件的第一个对象 Debug.Log("use Find:" + GameObject.Find("G1").transform.position); // 使用GameObject.FindGameObjectWithTag类方法获取GameObject，返回符合条件的第一个对象 Debug.Log("use FindGameObjectWithTag:" + GameObject.FindGameObjectWithTag("sphere_Tag").transform.position); // 使用GameObject.FindGameObjectsWithTag类方法获取GameObject，返回符合条件的所有对象 GameObject[] gos = GameObject.FindGameObjectsWithTag("sphere_Tag"); foreach (GameObject go in gos) { Debug.Log("use FindGameObjectsWithTag:" + go.name + ":" + go.transform.position); } // 更改 g1，g2，和g3的层级关系 g3.transform.parent = g2.transform; g2.transform.parent = g1.transform; Debug.Log("use Find again1:" + GameObject.Find("G1").transform.position); // 使用“/” 限定条件的方式查找GameObject Debug.Log("use Find again2:" + GameObject.Find("/G1/G2/G1").transform.position); } }
若要获取当前脚本所在GameObject对象中的某个组件，直接使用GetCompoent方法即可，如
Rigidbody br = GetComponent<Rigidbody>()
若要获取非当前脚本所在GameObject对象中的某个组件，则需要有GameObject作为前置引用，如变量go为指向GameObject对象的引用，则
Rigidbody br = go.GetComponent<Rigidbody>()
using UnityEngine;
using System.Collections;
public class GameObjectAndComponent_ts : MonoBehaviour {
public GameObject sp;
void Start () {
//以下3种表达方式功能相同
Rigidbody rb1 = rigidbody;
Rigidbody rb2 = GetComponent<Rigidbody>();
Rigidbody rb3 = rigidbody.GetComponent<Rigidbody>();
Debug.Log("rb1μ?InstanceID￡o" + rb1.GetInstanceID());
Debug.Log("rb2μ?InstanceID￡o" + rb2.GetInstanceID());
Debug.Log("rb3μ?InstanceID￡o" + rb3.GetInstanceID());
// 使用前置引用获取引用对象的Rigidbody组件
Debug.Log("前置引用sp对象中Rigidbody的InstanceID "+sp.GetComponent<Rigidbody>().GetInstanceID());
}
}
时间： 2024-12-23 22:59:24