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gfeldman
How do I cheat?
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Joined: 16 Jun 2016
Posts: 2
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 Posted: Thu Jun 16, 2016 8:54 pm Post subject: Help: Finding Loot Quantity |
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I am looking for a way to identify the loot DROP quantity (or DROP quality) code in a game. Is there a good way to identify this?
For example, simple things like stats/money/items(in inventory) I can just raise or lower and see how that value changes, but I have no idea how to do this with drops.
Ideally I would be able to increase the loot drop rate by 5x or the loot quality by 5x. This brings me more enjoyment from a game and doesn't leave it feeling broken to me (less grind, more fun) so I would greatly appreciate if anyone could help me learn to identify these values.
Current game I am playing is Grim Dawn, but would like to know how to do this in general as well.
Thank you for your help and I apologize if I posted this in the wrong section!
Last edited by gfeldman on Thu Jun 16, 2016 9:40 pm; edited 1 time in total |
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Zanzer
I post too much
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Joined: 09 Jun 2013
Posts: 3278
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| Posted: Thu Jun 16, 2016 8:59 pm Post subject: |
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Find the quantity for your inventory stack.
Find out what accesses that address when picking up loot.
Multiply that value by 5.
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gfeldman
How do I cheat?
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Joined: 16 Jun 2016
Posts: 2
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| Posted: Thu Jun 16, 2016 9:41 pm Post subject: |
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| Zanzer wrote: | Find the quantity for your inventory stack.
Find out what accesses that address when picking up loot.
Multiply that value by 5. |
Sorry, I updated original post to highlight that I would like to increase the DROP quantity (monster dies, 2 different items drop vs monster dies, 20 different items drop) and not the number of items that I already have. Or is that what you had answered? I will give it a try.
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Zanzer
I post too much
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| Posted: Thu Jun 16, 2016 9:46 pm Post subject: |
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Well, you won't get 20 different items.
My approach was just that when you pick up an item, you multiply that quantity.
So instead of picking up the 1 stick that dropped. It adds 20 sticks to your inventory.
Quite a bit more complicated to find a unit's loot table and drop chances.
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++METHOS
I post too much
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Joined: 29 Oct 2010
Posts: 4197
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| Posted: Thu Jun 16, 2016 11:37 pm Post subject: |
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| Just do as Zanzer originally said, except backtrace to find the call that gets executed when loot drops and just write a script so that that call gets executed multiple times. That might even get you random items.
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cooleko
Grandmaster Cheater
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Joined: 04 May 2016
Posts: 717
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| Posted: Fri Jun 17, 2016 9:37 am Post subject: |
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Both of the provided explanations work:
Zanzer: very easy to implement, only have to find the address of the inventory item that monster most frequently drops, once you have that address, see what accesses when the monster's drops are added to the inventory. why accesses instead of writes? Most likely, the game is going to manage the inventory like this:
| Code: | (for integer):
Mov register, [inventory item count] (ACCESSES)
add register, [drop count] (what you want to edit)
mov [inventory item count], register (WRITES)
(for float):
.. code that determines item drop amount and places it into FP stack ..
fld dword ptr [inventory item count]
fadd st(0), st(1)
fstp dword ptr [inventory item count] |
Of course, these are merely examples, actual implementation can vary wildly. To simply make the game "less grindy" you can find the ADD, FADD, inc, or w/e code causes the addition, and duplicate it to take up five lines of code (if it is FADDP, dont include the P until the last line)
Now you have 5x the drops from the enemy.
++Methos: Oh so much fun, but requires much more effort. As he mentions, odds are you will increase your chance for rare loot if you duplicate the right function call as the game will call the random loot generation function several more times. You need to start in very much the same manner as Zanzer: find your inventory item address, see what accesses it, once you find the instruction that accesses it, Break and trace that instruction. Follow the trace to the first "ret", double click the next line of code to go there in the memory viewer, and scroll up one line (will be a call instruction). Duplicate the prep lines before the call and the call itself, if the game crashes, you didnt get all the prep instructions. If you only got duplicates of one item or some other unintended result, then we need to go another function call deeper by following the original trace to the second "ret", and looking at its function call. Rinse and repeat until you find the "monster is dead, generate and distribute loot" function call.
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