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如何在if语句中使用布尔变量更改文本（C#）

c# unity3d

如何在if语句中使用布尔变量更改文本（C#）,c#,unity3d,boolean,C#,Unity3d,Boolean,所以我试图在unity中创建一个简单的文本冒险，我已经编写了一个脚本，根据按键的不同来改变文本的状态。为了尝试增加一点复杂性，我尝试添加一个系统，其中在一种状态下，显示一个项目已被拾取，并且该项目的变量已设置为true，这在脚本顶部说明。然后，当用户下一步进入不同的状态时，将检查变量是否为真，如果变量为真，则将显示不同的文本，如果变量为真，则显示不同的文本。我的问题是，每次我用IF语句进入状态时，不管发生什么，变量都会自动设置为false。如果您能给我一个答案，我将不胜感激：） 引擎： usin

所以我试图在unity中创建一个简单的文本冒险，我已经编写了一个脚本，根据按键的不同来改变文本的状态。为了尝试增加一点复杂性，我尝试添加一个系统，其中在一种状态下，显示一个项目已被拾取，并且该项目的变量已设置为true，这在脚本顶部说明。然后，当用户下一步进入不同的状态时，将检查变量是否为真，如果变量为真，则将显示不同的文本，如果变量为真，则显示不同的文本。我的问题是，每次我用IF语句进入状态时，不管发生什么，变量都会自动设置为false。如果您能给我一个答案，我将不胜感激：）

引擎：

using UnityEngine;
using UnityEngine.UI;
using System.Collections;

public class TextController : MonoBehaviour {

public Text text;
private enum states {cell, floor, CellDoor, mirror, bed, rock, shard};
private states myState;
bool rock;
bool shard;


    // Use this for initialization
    void Start () {
        rock = false;
        shard = false;
        myState = states.cell; 
    }

    // Update is called once per frame
    void Update () {    
        print (myState);
        if (myState == states.cell){
            state_cell ();
        }else if (myState == states.floor){
            state_floor ();
        }else if (myState == states.CellDoor){
            state_CellDoor ();
        }else if (myState == states.mirror){
           state_mirror ();
        }else if (myState == states.bed){
            state_bed ();
        }else if (myState == states.rock){
            state_rock ();
        }else if (myState == states.shard){
            state_shard ();
        }
    }

void state_rock (){
        rock = true;
        text.text = "You conjure what strength you have and eagerly pry at a slightly loose looking part of the concrete " +
                    "with your blistered hands. Finally a piece breaks free, you drop it into one of your pockets.\n\n" +
                    "You have obtained a rock! \n\n" +
                    "Press R to return to the cell.";               
    if (Input.GetKeyDown(KeyCode.R)){
        myState = states.cell;
    }
    print(rock);

void state_mirror (){
    print (rock);
    if (rock = true);{
        text.text = "A rather old fashioned mirror, strangely clean and drilled into the wall. Shattering the mirror and " +
                    "wielding a shard could prove useful. You remember the hefty chunk of concrete in your pocket. \n\n" +  
                    "Press T if you would like to throw the rock at the mirror or R if you would like to return to the cell";
    }
    if (rock = false);{
        text.text = "A rather old fashioned mirror, strangely clean and drilled into the wall. Shattering the mirror and " +
                    "wielding a shard could prove useful. You are unable to think of any way of shattering the mirror " +
                    "as it is rigidly screwed into the wall, perhaps a blunt object would do the trick?. \n\n" +
                    "Press R to return to the cell.";
    }                           
    if (Input.GetKeyDown(KeyCode.R)){
        myState = states.cell;
    }
    if (Input.GetKeyDown(KeyCode.T)){
        myState = states.shard;
    }

}
变量更改：

using UnityEngine;
using UnityEngine.UI;
using System.Collections;

public class TextController : MonoBehaviour {

public Text text;
private enum states {cell, floor, CellDoor, mirror, bed, rock, shard};
private states myState;
bool rock;
bool shard;


    // Use this for initialization
    void Start () {
        rock = false;
        shard = false;
        myState = states.cell; 
    }

    // Update is called once per frame
    void Update () {    
        print (myState);
        if (myState == states.cell){
            state_cell ();
        }else if (myState == states.floor){
            state_floor ();
        }else if (myState == states.CellDoor){
            state_CellDoor ();
        }else if (myState == states.mirror){
           state_mirror ();
        }else if (myState == states.bed){
            state_bed ();
        }else if (myState == states.rock){
            state_rock ();
        }else if (myState == states.shard){
            state_shard ();
        }
    }

void state_rock (){
        rock = true;
        text.text = "You conjure what strength you have and eagerly pry at a slightly loose looking part of the concrete " +
                    "with your blistered hands. Finally a piece breaks free, you drop it into one of your pockets.\n\n" +
                    "You have obtained a rock! \n\n" +
                    "Press R to return to the cell.";               
    if (Input.GetKeyDown(KeyCode.R)){
        myState = states.cell;
    }
    print(rock);

void state_mirror (){
    print (rock);
    if (rock = true);{
        text.text = "A rather old fashioned mirror, strangely clean and drilled into the wall. Shattering the mirror and " +
                    "wielding a shard could prove useful. You remember the hefty chunk of concrete in your pocket. \n\n" +  
                    "Press T if you would like to throw the rock at the mirror or R if you would like to return to the cell";
    }
    if (rock = false);{
        text.text = "A rather old fashioned mirror, strangely clean and drilled into the wall. Shattering the mirror and " +
                    "wielding a shard could prove useful. You are unable to think of any way of shattering the mirror " +
                    "as it is rigidly screwed into the wall, perhaps a blunt object would do the trick?. \n\n" +
                    "Press R to return to the cell.";
    }                           
    if (Input.GetKeyDown(KeyCode.R)){
        myState = states.cell;
    }
    if (Input.GetKeyDown(KeyCode.T)){
        myState = states.shard;
    }

}
不起作用的语句：

using UnityEngine;
using UnityEngine.UI;
using System.Collections;

public class TextController : MonoBehaviour {

public Text text;
private enum states {cell, floor, CellDoor, mirror, bed, rock, shard};
private states myState;
bool rock;
bool shard;


    // Use this for initialization
    void Start () {
        rock = false;
        shard = false;
        myState = states.cell; 
    }

    // Update is called once per frame
    void Update () {    
        print (myState);
        if (myState == states.cell){
            state_cell ();
        }else if (myState == states.floor){
            state_floor ();
        }else if (myState == states.CellDoor){
            state_CellDoor ();
        }else if (myState == states.mirror){
           state_mirror ();
        }else if (myState == states.bed){
            state_bed ();
        }else if (myState == states.rock){
            state_rock ();
        }else if (myState == states.shard){
            state_shard ();
        }
    }

void state_rock (){
        rock = true;
        text.text = "You conjure what strength you have and eagerly pry at a slightly loose looking part of the concrete " +
                    "with your blistered hands. Finally a piece breaks free, you drop it into one of your pockets.\n\n" +
                    "You have obtained a rock! \n\n" +
                    "Press R to return to the cell.";               
    if (Input.GetKeyDown(KeyCode.R)){
        myState = states.cell;
    }
    print(rock);

void state_mirror (){
    print (rock);
    if (rock = true);{
        text.text = "A rather old fashioned mirror, strangely clean and drilled into the wall. Shattering the mirror and " +
                    "wielding a shard could prove useful. You remember the hefty chunk of concrete in your pocket. \n\n" +  
                    "Press T if you would like to throw the rock at the mirror or R if you would like to return to the cell";
    }
    if (rock = false);{
        text.text = "A rather old fashioned mirror, strangely clean and drilled into the wall. Shattering the mirror and " +
                    "wielding a shard could prove useful. You are unable to think of any way of shattering the mirror " +
                    "as it is rigidly screwed into the wall, perhaps a blunt object would do the trick?. \n\n" +
                    "Press R to return to the cell.";
    }                           
    if (Input.GetKeyDown(KeyCode.R)){
        myState = states.cell;
    }
    if (Input.GetKeyDown(KeyCode.T)){
        myState = states.shard;
    }

}

嗯，您的脚本中有几个问题

让我们从以下内容开始：

 if (rock = true);{...
你需要意识到你被赋值为rock=true，你需要使用double-equals来进行比较。更重要的是，建议使用if（boolVar），因为如果它是真的，将自动执行

if(rock){ do something }
//is the same that 
if(rock == true){}
还有，另一件重要的事，就是你不应该把；在if之后，因为这样做时括号内的代码将与条件无关。

好吧，脚本中有几个问题

让我们从以下内容开始：

 if (rock = true);{...
你需要意识到你被赋值为rock=true，你需要使用double-equals来进行比较。更重要的是，建议使用if（boolVar），因为如果它是真的，将自动执行

if(rock){ do something }
//is the same that 
if(rock == true){}
还有，另一件重要的事，就是你不应该把；在if之后，因为这样做时括号内的代码将与条件无关。

这些语句存在一些明显的问题

if (rock = true);{
        text.text = "A rather old fashioned mirror, strangely clean and drilled into the wall. Shattering the mirror and " +
                    "wielding a shard could prove useful. You remember the hefty chunk of concrete in your pocket. \n\n" +  
                    "Press T if you would like to throw the rock at the mirror or R if you would like to return to the cell";
    }
    if (rock = false);{
        text.text = "A rather old fashioned mirror, strangely clean and drilled into the wall. Shattering the mirror and " +
                    "wielding a shard could prove useful. You are unable to think of any way of shattering the mirror " +
                    "as it is rigidly screwed into the wall, perhaps a blunt object would do the trick?. \n\n" +
                    "Press R to return to the cell.";
    }
如果，则不要在
的末尾加分号，
=
符号本身会在计算变量之前将右侧的值赋给左侧的变量。因此，将单个
=
更改为
=

你的代码变成


if (rock == true){
        text.text = "A rather old fashioned mirror, strangely clean and drilled into the wall. Shattering the mirror and " +
                    "wielding a shard could prove useful. You remember the hefty chunk of concrete in your pocket. \n\n" +  
                    "Press T if you would like to throw the rock at the mirror or R if you would like to return to the cell";
    }
    if (rock == false){
        text.text = "A rather old fashioned mirror, strangely clean and drilled into the wall. Shattering the mirror and " +
                    "wielding a shard could prove useful. You are unable to think of any way of shattering the mirror " +
                    "as it is rigidly screwed into the wall, perhaps a blunt object would do the trick?. \n\n" +
                    "Press R to return to the cell.";
    }        


虽然写这篇文章的更好方法是


if (rock) // is the same as if rock == true
{
        text.text = "A rather old fashioned mirror, strangely clean and drilled into the wall. Shattering the mirror and " +
                    "wielding a shard could prove useful. You remember the hefty chunk of concrete in your pocket. \n\n" +  
                    "Press T if you would like to throw the rock at the mirror or R if you would like to return to the cell";    
}
else // is the same as if rock == false (in this case)
{
        text.text = "A rather old fashioned mirror, strangely clean and drilled into the wall. Shattering the mirror and " +
                    "wielding a shard could prove useful. You are unable to think of any way of shattering the mirror " +
                    "as it is rigidly screwed into the wall, perhaps a blunt object would do the trick?. \n\n" +
                    "Press R to return to the cell.";    
}



这些说法显然存在一些问题


if (rock = true);{
        text.text = "A rather old fashioned mirror, strangely clean and drilled into the wall. Shattering the mirror and " +
                    "wielding a shard could prove useful. You remember the hefty chunk of concrete in your pocket. \n\n" +  
                    "Press T if you would like to throw the rock at the mirror or R if you would like to return to the cell";
    }
    if (rock = false);{
        text.text = "A rather old fashioned mirror, strangely clean and drilled into the wall. Shattering the mirror and " +
                    "wielding a shard could prove useful. You are unable to think of any way of shattering the mirror " +
                    "as it is rigidly screwed into the wall, perhaps a blunt object would do the trick?. \n\n" +
                    "Press R to return to the cell.";
    }            


如果
，则不要在
的末尾加分号，
=
符号本身会在计算变量之前将右侧的值赋给左侧的变量。因此，将单个
=
更改为
=

你的代码变成


if (rock == true){
        text.text = "A rather old fashioned mirror, strangely clean and drilled into the wall. Shattering the mirror and " +
                    "wielding a shard could prove useful. You remember the hefty chunk of concrete in your pocket. \n\n" +  
                    "Press T if you would like to throw the rock at the mirror or R if you would like to return to the cell";
    }
    if (rock == false){
        text.text = "A rather old fashioned mirror, strangely clean and drilled into the wall. Shattering the mirror and " +
                    "wielding a shard could prove useful. You are unable to think of any way of shattering the mirror " +
                    "as it is rigidly screwed into the wall, perhaps a blunt object would do the trick?. \n\n" +
                    "Press R to return to the cell.";
    }        


虽然写这篇文章的更好方法是


if (rock) // is the same as if rock == true
{
        text.text = "A rather old fashioned mirror, strangely clean and drilled into the wall. Shattering the mirror and " +
                    "wielding a shard could prove useful. You remember the hefty chunk of concrete in your pocket. \n\n" +  
                    "Press T if you would like to throw the rock at the mirror or R if you would like to return to the cell";    
}
else // is the same as if rock == false (in this case)
{
        text.text = "A rather old fashioned mirror, strangely clean and drilled into the wall. Shattering the mirror and " +
                    "wielding a shard could prove useful. You are unable to think of any way of shattering the mirror " +
                    "as it is rigidly screwed into the wall, perhaps a blunt object would do the trick?. \n\n" +
                    "Press R to return to the cell.";    
}



=
和
=
之间有区别，我建议你多读一些基本的C#concepts
if（rock=true）；{
在该行中，分号终止if语句。结束它。它意味着
if
控制一个空语句——这意味着if要么执行一个空语句（不执行任何操作），要么不执行该空语句（也不执行任何操作）。后面用大括号括起来的块与
if
无关。它只是执行。除了修复
=
的错误用法外，还需要去掉分号。由于
声明
是一个枚举，因此更需要将
Update
方法更改为使用
开关而不是序列在
=
和
=
之间有一个区别，我建议你多读一些基本的C#概念
如果（rock=true）；{
在该行中，分号终止if语句。结束它。它意味着
if
控制一个空语句——这意味着if要么执行一个空语句（不执行任何操作），要么不执行该空语句（也不执行任何操作）。后面用大括号括起来的块与
if
无关。它只是执行。除了修复
=
的错误用法外，还需要去掉分号。由于
声明
是一个枚举，因此更需要将
Update
方法更改为使用
开关而不是序列我意识到这是多么的新手错误，谢谢！我意识到这是多么的新手错误，谢谢！