Newbie question about archetypes and arrays

Legacy UDK Programming and UnrealScript
1

I declare an array containing archetypes:

var() archetype array<scene> Scenes;

Then in the editor I can fill the array by manually selecting the archetypes and adding them.
Later in game I can spawn these archetypes from the array. No problem, all works, I use this method a lot.

Problem is when I try to fill the array from a function in the script:

Scenes[0] = scene’TEST.SceneTavern’;
or
Scenes.additem(scene’TEST.SceneTavern’);

for both methods I have this error:

Error, Bad or missing expression for token: Scene, in ‘=’

References are OK, but seems that I can’t assign them in the script, but I can do it from the editor. There are some way to do from script? I need to indicate that the reference is an archetype or something similar?

2

Type of scene may clear the error

var archetype array<scene> Scenes;
3

Yeah, sorry, the forum removed the < and > signs because I didn’t use the code tag. I fixed it.

So, any solution to add archetype items to the array?

4 
var() archetype array<scene> Scenes;
This creates an array of arrays

var archetype array<scene> Scenes;
Creates a single array;

Other than that I looked and you are doing the other part correctly

5

Both are the same, the () before var only makes the array visible in the editor in the actor properties, so you can edit items here directly.

I can add items from the editor, and spawn them in game. But I can’t add items from a function. So the array is working, but I do something wrong when adding from the function.

6

I’ve never tried adding something of class archetype to an array. But, so long as you’re careful about what you put in the array, you can use class actor. I think this should work.

var() array<actor> ActorArchetypes;
...
ActorArchetypes.AddItem(SomeClass'Package.Resource');
spawn(ActorArchetypes[i].class,,,,,ActorArchetypes[i]);
7

Removing “archetype” from the array declaration, gives the same error.

The array declaration is correct, I can add archetypes to the array in the editor, and later spawn them in game. All is working.

But the error is in the additem command. This don’t work:

ActorArchetypes.AddItem(SomeClass'Package.Resource');

I have copied one item added to the array from the editor and the actor reference is the same one I try to use in the additem command, but it gives error.

8

Also, this works correctly:

Default properties {
Scenes[0] = scene’TEST.SceneTavern’
}

But this way give error:

function Test()
{
Scenes.additem(scene’TEST.SceneTavern’);
}

Also, if I declare a simple var:

var archetype Scene SceneSomeItem;

and then I try to assign a value in a function:

function Test()
{
SceneSomeItem = scene’TEST.SceneTavern’;
}

Gives the same error. But if it’s assigned in default properties works correctly.

So I can’t manage archetype references directly, only in default properties and in the actor properties in Editor.

9

I don’t think the problem is with assigning an archetype to a variable. I’ll bet that the problem is assigning something of Class'Scene' to a variable.

If you start with

var() archetype array<object> ObjectArray;
...
ObjectArray.AddItem(SomeClass'Package.Resource'); // Any archetype that isn't a scene

does that work?

What are you trying to do with these scenes? I’ve never used a scene object before. How do you even create an archetype from something that isn’t a class ActorSubclass extends Actor placeable;?

10

No, it’s not working.

“Scene” is a custom class, extended from Actor. It’s a class to execute some simple cinematics. I want to have all of them in an array, so I can search them by tag, spawn it and perform the cinematic. I can use them in quests and others events easily.

Placing values in default properties works perfect:
Scenes[0] = scene.reference
Scenes[1] = …

but I can’t assign values from a function using Scene[index] = value, or using scenes.additem.

I don’t understand why. I had these problem before in others parts of the script, when trying to assign an archetype reference to simple variables. I had to use another variable and set it in the default properties instead using direct references.

11

I wonder if one reason why you’re having problems is because there’s also a scene class made by Epic:

scene.uc

//=============================================================================
// Scene - script exposed scene enums
// Copyright 1998-2015 Epic Games, Inc. All Rights Reserved.
//=============================================================================
class Scene extends Object
	native(Scene);

/**
 * A priority for sorting scene elements by depth.
 * Elements with higher priority occlude elements with lower priority, disregarding distance.
 */
enum ESceneDepthPriorityGroup
{
	// unreal ed background scene DGP
	SDPG_UnrealEdBackground,
	// world scene DPG
	SDPG_World,
	// foreground scene DPG
	SDPG_Foreground,
	// unreal ed scene DPG
	SDPG_UnrealEdForeground,
	// after all scene rendering
	SDPG_PostProcess
};

/** Detail mode for primitive component rendering. */
enum EDetailMode
{
	DM_Low,
	DM_Medium,
	DM_High,
};

/** bits needed to store DPG value */
const SDPG_NumBits = 3;

There was a time I remember when I couldn’t set a variable to an archetype. I think in those places I had to use DynamicLoadObject. Maybe try this:

Scenes.AddItem(Scene(DynamicLoadObject('TEST.SceneTavern', class'Scene')));
12

Sorry for the confusion… my class is named “Escena”, in spanish, my language… but I wrote here translated to english, “Scene”.

With DynamicLoadObjet works fine, thanks. But I remember that to use DynamicLoadObjet, resources must be in a seekfree package, or something similar.

13

I remember having problems with arrays of archetypes… I hope this phrase is useful…
WHen i get to UDK a bit I will tell you if there is a way to do what you are trying to do. No garantues…