Unity中的C#学习(二)

承接之前的学习，从大纲出发，这章主要是理解和掌握一些基础的知识

1.脚本概念:在unity当中，脚本可被看为行为组件。

1.1可以在检视器中看到,公开的属性值可以在面板中动态赋值和通过拖拽的方式添加，通过挂在游戏对象上面进行执行.

2.变量与函数

using UnityEngine;
using System.Collections;

public class VariablesAndFunction{

int myInt=5;

void Start(){

myInt = MultipleByTwo (myInt);
}

private int MultipleByTwo(int number){

int ret;

ret = myInt* 2;

return ret;
}
}

3.脚本规范与语法：

<pre name="code" class="csharp">using UnityEngine;
using System.Collections;
//修饰符 类   类名  		  父类	类作用区域起始位置
public class BasicSyntax: MonoBehaviour{
// 这个是单行注释

/*这个是多行注释

*

*

*/
//	返回类型 方法名
void Start(){
//		类.静态方法 方法参数 tranform 来自于父类
Debug.Log (transform.position.x);

if (transform.position.y <= 5f)
{
Debug.Log ("I`m about to hit the Ground!");
}
}
//类作用区域结束位置
}

4.c#与js的语法区别
c#的脚本如下:

using UnityEngine;
using System.Collections;
public class ExampleCSharpSyntax: MonoBehaviour{
int myInt=3;
int MyFuntion(int number){
int ret=myInt*number
return ret;
}
}

js的脚本如下:

#pragma strict
var myInt: int=3;

function MyFunction(number:int):int
{
var ret=myInt*number;
return ret;
}

5.If语句

using UnityEngine;
using System.Collections;

public class IfStatements : MonoBehaviour {
public float coffeeTempreature = 85.0f;
public float hotLimitTempreature=70.0f;
public float coldLimitTempreature=40.0f;

void Update(){
if (Input.GetKeyDown (KeyCode.Space))
TempreatureTest ();

coffeeTempreature -= Time.deltaTime* 5f;
}

void TempreatureTest(){
if (coffeeTempreature > hotLimitTempreature) {
Debug.Log ("Coffee is too hot");
}else if(coffeeTempreature<coldLimitTempreature){
Debug.Log ("Coffee is too cold.");
}else{
Debug.Log("Coffee is just right.");
}

}
}

6.循环

<img src="https://img-blog.csdn.net/20160702112205043?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" />

代码如下:

<pre name="code" class="csharp">using UnityEngine;
using System.Collections;

public class Loop : MonoBehaviour {
int cupsInTheSink=4;

void Start(){
//while loop
while(cupsInTheSink>0){
Debug.Log ("I`ve washed a cup!");
cupsInTheSink--;
}

//do while loop
bool shouldContinue = false;
do {
print ("Hello World");
} while(shouldContinue == true);

//for loop
int numEnemies=3;
for (int i = 0; i < numEnemies; i++) {
Debug.Log ("Creating enemy number: " + numEnemies);
}

//foreach loop
string [] strings=new string[3];
strings[0]="First String";
strings[1]="Second String";
strings[2]="Thrid String";

foreach (string item in strings) {
print (item);
}
}
}

7.作用域与修饰符

代码如下:

using UnityEngine;
using System.Collections;

public class ScopeAndAccessModifiers : MonoBehaviour {
//共有变量可以在类的外部访问，并且在脚本被挂载的时候，被访问到
public int alpha;
//私有变量只可以在类的内部访问和使用
private int beta=0;
private int gamma=5;

void Example(int pens,int crayons){
int answer;
answer = pens* crayons* alpha;
Debug.Log (answer);
}

void Update(){

Debug.Log ("Alpha is set to: " + alpha);
}
}

第二章的学习先到此结束，都比较基础，但是也很重要.