Question

所以我试图在团结中创建一个简单的文本冒险，我编写了一个脚本，根据按键更改文本的状态。为了尝试添加一些复杂性，我试图添加一个系统，当处于一个状态时，显示一个项目被拾取，并且该项目的变量已设置为true，这在脚本的顶部说明。然后，当用户下一次进入不同状态时，检查该变量是真还是假，如果该变量为真，则如果其为假，则将显示不同的文本。我的问题是，每当我使用IF语句进入状态时，无论如何变量都会自动设置为false。答案不仅仅是赞赏:)。

发动机：

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 ();
        }
    }

变量变化：

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);

不起作用的陈述

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;
    }

}

Console saying item is obtained, 'true'

Console saying that the item has not been obtained for some reason, 'false'

Answer 1

嗯，你的脚本有几个问题。

让我们从这开始：

 if (rock = true);{...

你需要意识到你分配了rock = true，你需要使用double equals来比较。更重要的是，建议使用if（boolVar），因为如果它是真的则自动执行。

if(rock){ do something }
//is the same that 
if(rock == true){}

另外，另一件重要的事情是，你不应该放一个;在if之后，因为当你这样做时，括号内的代码将不会与条件相关。

Answer 2

这些陈述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.";
    }

您不会在if的末尾添加分号，并且=符号本身会在评估之前将右侧的值与左侧的变量对齐。因此，将单个=更改为==。

您的代码变为，

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.";
    }

虽然写一个更好的方法是，

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.";    
}

如何在if语句中使用布尔变量来更改文本（C＃）

2 个答案: