IF in a GUI

Question

Hi Guys, how i put a IF in a text field for example:

         GUI.Box (Rect(Screen.width * (guix),Screen.height * (guiy),Screen.width * (guiw), Screen.height * (guih)),
     
     if(RifleShort > 0){ "Content" }
     
     );

But, not work :/ Have other Way? I tryng to make for example,

if(RifleAmmo > 0){ " \n RifleAmmo : More than..." } if(PistolAmmo > 0){ "\n Pistol Ammo : More than..." } if(SubMachineGunAmmo > 0){ "\n Sub... Ammo : More than..." }

Answer 1

An if statement influence the control flow and represent a conditional branch in the execution order. It can't be used inside an atomic instruction as parameter.

If you want to pass a different string as parameter depending on a condition you have several possibilities:

Use a variable as parameter which get set to the desired value before you call your GUI.Box:

var text = ""; if(RifleShort > 0) { text = "Content"; } GUI.Box (Rect(Screen.width * (guix),Screen.height * (guiy),Screen.width * (guiw), Screen.height * (guih)), text);

direct call different versions:

if(RifleShort > 0) { GUI.Box (Rect(Screen.width * (guix),Screen.height * (guiy),Screen.width * (guiw), Screen.height * (guih)), "Content"); } else { GUI.Box (Rect(Screen.width * (guix),Screen.height * (guiy),Screen.width * (guiw), Screen.height * (guih)), ""); }

or use the ternary operator (?) which takes a condition and two arguments:

GUI.Box (Rect(Screen.width * (guix),Screen.height * (guiy),Screen.width * (guiw), Screen.height * (guih)), ((RifleShort > 0)?"Content":""));

The ternary operator should be avoided since it results in very long lines and it's difficult to read.

Answer 2

Answer by Rod-Green · Jan 03, 2012 at 12:24 AM

Well.. the simple answer is to just assign it to a string and apply the assigned string..

 var theString : string = "DEFAULT";
 
 if(RifleShort > 0)
     theString += "Conent";

 Debug.Log(theString);

Then you can use that string however you want.. so..

 var theRifleString : string = "";
 
 if(RifleAmmo > 0)
 {
     theRifleString = " n RifleAmmo : More than...";
 }
 
 var thePistolString : string = "";
 
 if(PistolAmmo > 0)
 {
     thePistolString = "n Pistol Ammo : More than...";
 }
 
 var theMachineGunString : string = "";
 
 if(SubMachineGunAmmo > 0)
 {
     theMachineGunString = "n Sub... Ammo : More than...";
 }

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Bunny83 · Jan 03, 2012 at 12:28 AM 0

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I guess the OP uses UnityScript since he doesn't have a "new" in front of "Rect". So just for the record, this example is written in C# ;)

Rod-Green · Jan 03, 2012 at 06:08 AM 0

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Hah you're right. I tried to work it out from the sample code but I missed the 'new Rect' good catch.. Ill tweak my examples

IF in a GUI

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