[ZSCRIPT] How do I utilise Custom Properties?

[Mikk-]

I've been trying to create my own custom properties in ZScript.

What I want is to create a base class for an inventory item with two properties GiveItem and GiveToken. I want to be able to specifiy these two properties in the classes that inherit from the base class. During pickup I want to check for a certain condition and give either the Item or Token speicified in the Default block.

Code: Select all

class w_Pickup : CustomInventory     // This is the base class that all future items will inherit from
    {                                 
    class<inventory> w_Item;          
    class<inventory> w_Token;        
    
    Property GiveItem: w_Item;        // The custom properties, defined as the wiki states (???)
    Property GiveToken: w_Token;    
    
    default
        {
        +COUNTITEM
        +FLOATBOB
        Inventory.PickupFlash "PickupFlash";
        +INVENTORY.FANCYPICKUPSOUND
        Inventory.PickupSound "misc/p_pkup";
        }
    
    
    states
        {
        Pickup:
            TNT1 A 0
                {
                If(CountInv("w_SpellBook1"))
                    { A_GiveInventory(GiveToken); } // I get an unknown identifier error here ... 
                Else
                    { A_GiveInventory(GiveItem); }    // ... and here - despite both being defined. 
                }                                    // Maybe I'm defining them wrong, or accessing them wrong. 
            stop;                                    // Either way it is not particularly clear on the wiki
        }
    }
    
class w_TestToken : w_ItemToken { }

class w_TestItem : ArtiHealth { }

class w_TestPickup : w_Pickup replaces ArtiHealth
    {
    default
        {
        Inventory.PickupMessage "$TXT_ARTIHEALTH";
        w_Pickup.GiveItem("w_TestItem");    
        w_Pickup.GiveToken("w_TestToken");    
        }
    states
        {
        Spawn:
            PTN2 ABC 4;
            Loop;
        }
    } 

in this example if the player picks up w_TestPickup while holding w_SpellBook1 I want the player to recive the item specified in GiveToken. Whereas if they do not currently have the SpellBook item then they receive the GiveItem.

Maybe it's just me, but the wiki seems to be lacking in clarity when it comes to custom properties - sure it tells you how to define them, but to actually use them? no.

[Blue Shadow]

You don't use the properties, you use the variables when reading and writing.

[Mikk-]

Oh! How silly of me. Thanks very much!