Cataclysm-dda: repairing a backpack requiring variable amount of patches

[bloodraven983]

Describe the bug

amount of leather patches required for repairing a tactical leather backpack varies every time i pickup some leather patches

Steps To Reproduce

I don't honestly know how to reproduce it

Expected behavior

An item should have a fixed amount of materials required for mending and repairing

Screenshots

it was less patches required before

Versions and configuration

• OS: Windows
  
  
  
  • OS Version: 10.0 1903
  
  
• Game Version: 0.E-3489-g6e97042 [64-bit]
• Graphics Version: Tiles
• Game Language: English [en]
• Mods loaded: [
  Dark Days Ahead [dda],
  Disable NPC Needs [no_npc_food],
  No Rail Stations [No_Rail_Stations],
  No Fungal Monsters [No_Fungi]
  ]

[EvgenijM86]

Do you always do some crafting/repair job perfectly in real life? Or do you sometimes waste material? I think some randomness is appropriate.

[anothersimulacrum]

Randomness may be appropriate, but this appears to be linked to the volume contained in the item.

[bloodraven983]

how about no?

what kind of repair (at tailoring 7 so not a noob ingame) requires half the material for one stage of repair? it's clearly a bug

[wapcaplet]

Confirmed - the number of patches required appears to be related to the current "Volume" of the backpack you want to repair, which for non-rigid backpacks, will vary based on how full of stuff it is. And, to be clear, this is the material requirements shown before attempting any actual repairs - it does not relate to how materials are used up when attempted repairs fail.

For example I have this damaged leather backpack that is 2.0 L in volume when empty:

When I activate a sewing kit and try to repair the backpack without having any leather patches, I get

You don't have enough leather patches to do that.  Have: 0, need: 1

However, if I stuff a bunch of items into the backpack, its total volume is increased to 21.0 L:

With no leather patches in my inventory, trying to activate the sewing kit and repair it now, I need 9 patches:

You don't have enough leather patches to do that.  Have: 0, need: 9

• OS: Linux
  
  
  
  • OS Version: Distributor ID: Pop; Description: Pop!_OS 20.04 LTS; Release: 20.04; Codename: focal;
  
  
• Game Version: 0.E-3531-gff1ff7ea9f [64-bit]
• Graphics Version: Tiles
• Game Language: System language []
• Mods loaded: [
  Dark Days Ahead [dda],
  Disable NPC Needs [no_npc_food]
  ]