getting variable from every element in array?

Question

This is exactly what the title says. I have a array of a custom class I made called Spell. Spell has multiple variables in it and one of them is called Icon. I need to get the Icon (Which is a Texture2D) from all of the elements in a array called actions and display it as buttons in a GUI group. I will put the code bellow.

 var controlTexture : Texture2D;
 var texturetodisplay : Texture2D;
 var openPic : Texture2D;
 var Open : boolean;
 var Self : GameObject;
 var Class : PlayerClass;
 var Abilities : Spell;
 var AvaibleAbilities : Vector2;
 
 function OnGUI ()
 {
 if (GUI.Button (Rect (1300,850,200,200),controlTexture,"")){
         Open = true;
         }
         if(Open){
             GUI.DrawTexture(Rect(300,50,1200,800), openPic);
             GUI.DrawTexture(Rect(570,80,500,500), Class.type);
             GUI.DrawTexture(Rect (490,50,500,500),Class.Level);
             GUILayout.BeginArea(Rect(1100,620,1200,800));
             AvaibleAbilities = GUILayout.BeginScrollView(AvaibleAbilities, GUILayout.Width(70), GUILayout.Height(180));
             GUILayout.BeginVertical();
             GUILayout.Button(Class.actions.icon);
             GUILayout.EndVertical();
             }
             GUILayout.EndScrollView();
             GUILayout.EndArea();
         }
 
 
 function Start (){
 WaitForSeconds(1);
 Class = Self.GetComponent("HUD").ClassType;
 }

Then I have the Spell class :

 class Spell{
 
     var name : String;
     var type = "action";
     var icon : Texture2D;
     static var description : String;
     var Damage : int;
     var animation : AnimationClip;
     var Projectile : Transform;
     var Cooldown : int;
     var Level : int;
  
     // The generic use function for the action
     function use(){
         Debug.Log(description);                        // Do stuff
     }
 }

So is there any methods I can use to do this?

Answer 1

Answer by iwaldrop · Mar 26, 2013 at 05:51 PM

You can use a for or a foreach loop:

 for (int i = 0; i < array.Length; i++)
     Debug.Log(array[i]);
 
 foreach (object o in array)
     Debug.Log(o);

Add comment · Show 13 · Share

RandomDeveloper · Mar 27, 2013 at 07:14 PM 0

Share

I have changed my code to this:

GUILayout.BeginArea(Rect(1100,620,1200,800)); AvaibleAbilities = GUILayout.BeginScrollView(AvaibleAbilities, GUILayout.Width(70), GUILayout.Height(180)); for (var i = 0; i < Class.Actions.Length; i++) GUILayout.BeginVertical(); if(GUILayout.Button(Class.Actions[i].icon)); GUILayout.EndVertical(); } GUILayout.EndScrollView(); GUILayout.EndArea(); }

But I get a massive amount of errors. How would the loop look in my code?

iwaldrop · Mar 28, 2013 at 03:08 AM 0

Share

A loop would look just like the code I posted above. I don't know what you're trying to loop through however, because there aren't any collections in your code example. I also don't know where your errors are co$$anonymous$$g from, because you haven't formatted your code. Use the '101-010' button to format it so that it's readable, and I'll take another look at where your errors are co$$anonymous$$g from.

As for how your code might look with a loop, could you share what you're trying to loop through?

RandomDeveloper · Mar 28, 2013 at 04:21 PM 0

Share

I get how this is really confusing. I have another class called PlayerClass which has a array of spells inside it called Actions. So now I have Class which is a PlayerClass and it has three Actions (Spells in actions) that I set through the inspector. Now all I need to do is to display the icon of all the Actions on line 24. I just have no idea what line the foreach loop should be on.

iwaldrop · Mar 28, 2013 at 04:49 PM 0

Share

Basically, you'll want to do the following:

 for (int i = 0; i < Actions; i++)
     GUI.Box(new Rect(xPos * i+1, yPos, boxWidth, boxHeight), Actions[i].guiContent);

You just specify an x and y value somewhere (starting where you want the first block placed) and draw each block at a location at a position defined by x i+1. That means that if you start at an x position of 50 then the first block is placed at 50, whereas the second block would be at 100 (x 1+1 = 50 * 2).

$$anonymous$$ake sense? It's really quite trivial to do, you just need to work out the values that you want to use as spacing.

RandomDeveloper · Mar 28, 2013 at 05:19 PM 0

Share

I do have something set up for the button but I used your example ins$$anonymous$$d. I can post the code and all the errors I have. I can send you TONS of my code and you can see why I get errors. I still get a bunch and nothing displays :(.

 function OnGUI ()
 {
 if (GUI.Button (Rect (1300,850,200,200),controlTexture,"")){
         Open = true;
         }
         if(Open){
             GUI.DrawTexture(Rect(300,50,1200,800), openPic);
             GUI.DrawTexture(Rect(570,80,500,500), Class.type);
             GUI.DrawTexture(Rect (490,50,500,500),Class.Level);
             GUILayout.BeginArea(Rect(1100,620,1200,800));
             AvaibleAbilities = GUILayout.BeginScrollView(AvaibleAbilities, GUILayout.Width(70), GUILayout.Height(180));
             for (var i = 0; i < Class.Actions.Length; i++)
             GUILayout.BeginVertical();            
             GUI.Box(new Rect(500 * i+54, 600, 200, 200), Class.Actions[i].guiContent);
             GUILayout.EndVertical();
             }
             GUILayout.EndScrollView();
             GUILayout.EndArea();
         }

Thats my code now and heres the errors I get.

IndexOutOfRangeException: Array index is out of range. SpellBook.OnGUI () (at Assets/Accounts/Player/GUI/SpellBook.js:25)

NullReferenceException UnityEngine.Texture.get_width () UnityEngine.GUI.DrawTexture (Rect position, UnityEngine.Texture image, Scale$$anonymous$$ode scale$$anonymous$$ode, Boolean alphaBlend, Single imageAspect) UnityEngine.GUI.DrawTexture (Rect position, UnityEngine.Texture image) SpellBook.OnGUI () (at Assets/Accounts/Player/GUI/SpellBook.js:20)

If you want I can show you my HUD script and my PlayerClass script.

Show more comments

getting variable from every element in array?

1 Reply

Your answer

Welcome to Unity Answers

Follow this Question

Related Questions