In this guide I want to show people, that are new to this, how I started and what made this whole process a lot easier for me.
Extract the decompressor and install UE Explorer.
Copy the two files below from \Borderlands 2\WillowGame\CookedPCConsole into the folder where the decompress.exe is located.
* Startup.upk
* Engine.upk
Just drag them onto the decompress.exe now and you should now have a new folder called unpacked in there.
These files are the ones you want to open up in UE Explorer.
Note: Unfortunately UE Explorer won't show you all objects/classes etc. I'll follow up with a few other methods on how to find more stuff.
Let's open up the decompressed Startup.upk.
On the left side at the top, click now on Objects and below on Content.
You'll now see a big treeview of all the objects UE Explorer could find. Let's open up GD_Itempools for example.
Now we can see all the objects that are inside of GD_Itempools. So let's use DropWeights for example.
This is the object that contains the DropODDS-Objects. So basically the odds of this object dropping something.
Let's check DropODDS_BuffDrinks. Inside we see two objects. Click on ConstantAttributeValueResolver_1 and on the right side we'll see the property ConstantValue with a value of 0.050.
Now check the "// Reference:"-line below.
We can copy almost everything from this to directly use it in the game. GD_Itempools.DropWeights.DropODDS_BuffDrinks.ConstantAttributeValueResolver_1 in this case.
So to change the ConstantValue in the game, we can just use this in the console:
set GD_Itempools.DropWeights.DropODDS_BuffDrinks.ConstantAttributeValueResolver_1 ConstantValue 0.65
Note: Also this won't show you everything there is. You'll find a lot more if you use the console in the game to poke around. This should give you a good basic understanding of what to look for, what you can use and where/when.
Using UE Explorer with the Engine.upk is a little bit different but revealed a lot more stuff to me.
Here's a small example.
First we open it up. Once again we choose Objects at the top-left. This time, if we click on Content we barely get anything.
BUT, this time we can click on Classes instead.
Here, we can also actually use the search-function. This is incredibly useful. You can either click on Tools -> Find -> Find in classes or press CTRL+Shift+F. Enter any keyword you're looking for.
For this example I'm just going to open up the class Camera instead.
On the right side, you'll now see actual code. The best things can usually be found at the very bottom of the class. It's basically a list of all the defaultproperties being used by this class.
Let's say we'd like to change the value of DefaultFOV.
Building the command for this is very easy.
Take the class name, the propertyname and the value you want, type set in front of it, and you got your command.
For this example:
set Camera DefaultFOV 85.0
First click on Options at the top. In this new window click Add in the top-middle of the window.
What I've added there is listed at the very bottom of this site.
How you get these? To be completely honest, I have no idea. :P
I just played around and ended up with something that apparently works. So what I ended up doing was this:
I opened up the Startup.upk and unfolded the GD_Itempools-entry.
On the right side you'll see
Package'GD_Itempools'
So, Package is the very first part of our Array-type. Also the very first thing you open up in UE Explorer.
The next one will be the Object, so for example Runnables. The orange entry is the Class. So let's click on Pool_KingMong.
If we have not set up any Array types, we will now see:
BalancedItems=/* Array type was not detected. */
Since we want to see the results of BalancedItems we will choose this as the last path for the Array-type.
What is left now, is the correct type in the end. Head back into the Options-screen and play around with the Types. After selecting one, the "Group"box above should now have :YOURCHOSENTYPE behind everything else. Hit Save on the right side, switch back to the Startup.apk-Tab, click on Tools below the Tab and Reload.
You'll see, that BalancedItems now will show up in a similar way as if you'd have obj dumped it in the game.
Redo the same thing for other Properties and replace them with BalancedItems and try out different Types if needed.
Package.Class.ResourcePools worked best with :ObjectProperty for example.
For everything I use, I'll try to keep the list down below updated. Should you play around with these and see that I chose one that makes less sense with the results, hit me up, so I can fix it.
Package.Object.Class.ValueResolverChain:ObjectProperty
Package.Object.Class.BalancedItems:PointerProperty
Package.Class.ResourcePools:ObjectProperty
Package.Class.InputContexts:PointerProperty
Package.Class.PlayerClassAchievementData:PointerProperty
Package.Class.EligibleUsage:ObjectProperty
Package.Class.OnLevelUp:ObjectProperty
Package.Class.OnLevelUpNaturally:ObjectProperty
Package.Class.Behaviors:ObjectProperty
Package.Class.Behaviors.SkillEffectDefinitions:PointerProperty
Package.Class.ContextResolverChain:ObjectProperty
Package.Class.AssetPaths:PointerProperty
Package.Class.Dependencies:ObjectProperty
Package.Class.Manufacturers:PointerProperty
Package.Class.WeaponAttributeEffects:PointerProperty
Package.Class.ZoomWeaponAttributeEffects:PointerProperty
Package.Class.AttributeSlotUpgrades:PointerProperty
Package.Class.ConsolidatedAttributeInitData:PointerProperty
Package.Class.MaterialPartData.WeightedParts:PointerProperty
Package.Class.ConsolidatedAttributeInitData:PointerProperty
Package.Class.MaterialPartData.WeightedParts:PointerProperty
Package.Class.AttributeStartingValues:PointerProperty
Package.Class.CharacterCustomizations:PointerProperty
Package.Class.WeaponTypes:PointerProperty
Package.Class.GameSettingsCfgList:PointerProperty
Package.Class.Attribute_ExperienceMultiplier.ObjectPropertyAttributeValueResolver_20:PointerProperty
Package.Class.FastTravelStationOrderList:ObjectProperty
Package.Class.UIStatList:PointerProperty
Package.Class.AttributeSlotEffects:PointerProperty
Package.Class.OnChallengeIssued:ObjectProperty
Package.Class.OnDuelStarted:ObjectProperty
Package.Class.OnDuelWinLoss:ObjectProperty
Package.Class.OnDuelDraw:ObjectProperty
Package.Class.DuelTeams:NameProperty
Package.Class.LevelGroups:PointerProperty
Package.Class.LevelGroups.Levels:PointerProperty
Package.Class.Attributes:ObjectProperty
Package.Class.SkillConstraints:PointerProperty
Package.Class.Sublibraries:StrProperty
Package.Class.SublibraryLinks:ObjectProperty