How to read the contents of an item property (through scripting)?

Alverik

Hi everyone, just wondering if anyone knows how to manually read the contents on an item property so that it can be saved in a variable and used to display its contents on label? That would also help in using the variables content to do checks (i.e.: if property contents is "Clean" then show clean Icon in the UI properties panel, if content is "dirty" then display dirty icon in the UI properties panel, etc). 

My items will have from 1 to 3 properties (depending on the type), each property will have several states. I'll have a pane where an icon appears to let the player know of the properties of the item (and the current state, again, imagine a property state as dirty, clean, ruined, etc). If an Item doesn't have one of the 3 properties I want the icon for that property to either not appear or to get grayed out. I think I have an idea of how to do it, but I need to know how to get the content of the item's property. I'll try to take a look at the scripting guide but if anyone knows already and can tell me, that would be a lot of help.

Anyways, as usual, any advice would be greatly appreciated.

ChrisIceBox

An item's property can be retreived with the GetProperty function:

AC.InvItem myItem = AC.KickStarter.runtimeInventory.GetItem (3); // The item with ID = 3
InvVar myProperty = myItem.GetProperty (2); // The property with ID = 2;
string valueAsText = myProperty.GetValue ();

Alverik

Thanks, I'll give it a try!

PS: Ah, by the way, how would I get the ID of the currently highlighted item? (to automate the process)

ChrisIceBox

AC.KickStarter.runtimeInventory.hoverItem;
AC.KickStarter.runtimeInventory.selectedItem;

Alverik

Eh... I'm not sure how I'm supposed to use those last two... I tried typecasting an invItem to store them, but if I try to then get the invitem.id into an int variable I get an error... so, how do I store their data into an int to use it? 

Anyway, this is the function I'm trying to make in my UIItemPropertiesHandler script:

[SerializeField]

private int[] MyPropertyIDs;

string GetMyProperty(int propertyID){

//get selected item ID

AC.InvItem myCurrentItem = AC.KickStarter.runtimeInventory.hoverItem;

//optional method

//AC.InvItem myCurrentItem = AC.KickStarter.runtimeInventory.selectedItem;

int myID = myCurrentItem.id;

Debug.Log ("current ID " + myID.ToString());

//cast the item 

AC.InvItem myItem = AC.KickStarter.runtimeInventory.GetItem (myID);

//get the right property

InvVar myProperty = myItem.GetProperty (propertyID);

//get the property content into a string

PropertyAsText = myProperty.GetValue ();

//return the property value

return PropertyAsText;

}

void SetItemDescription(string Description){

AC.GlobalVariables.SetStringValue (DrescriptionVariableID, Description);

}

It compiles, but when I run I get the next error:

NullReferenceException: Object reference not set to an instance of an object

UIItemPropertiesHandler.GetMyProperty (Int32 propertyID) (at Assets/02 Custom Actions Scripts/General Scripts/UIItemPropertiesHandler.cs:99)

UIItemPropertiesHandler.Start () (at Assets/02 Custom Actions Scripts/General Scripts/UIItemPropertiesHandler.cs:48)

-Line 99 is:

int myID = myCurrentItem.id;

-Line 48 is (position 0 is the int number 0, my description property ID):

SetItemDescription (GetMyProperty (MyPropertyIDs[0]));/ 

ChrisIceBox

You don't need to call GetItem with "myID" once you've declared myCurrentItem - you can skip that to just call myCurrentItem.GetProperty.

Also be aware that hoverItem (and so also myCurrentItem) will not always be filled, so you must also do a null check for it.  If you don't want to return an empty string when this is the case, you can instead store the string whenever it's non-empty:

private string PropertyAsText;

string GetMyProperty (int propertyID)
{
    //get selected item ID
    AC.InvItem myCurrentItem = AC.KickStarter.runtimeInventory.hoverItem;
   
    if (myCurrentItem != null)
    {
        //get the right property
        InvVar myProperty = myCurrentItem.GetProperty (propertyID);

        //get the property content into a string
        PropertyAsText = myProperty.GetValue ();
    }
   
    //return the property value
    return PropertyAsText;
}