Advanced looting system.

Hello!
It's my first idea for this community, it's quite complex idea, probably would require tons of hours put into it but, I'm sure it's worth it!.
So let's get straight to the point, shall we?

Many maps that Zworld Afterlife operates on are quite big (for ex.Fork),those maps usually have small amount of open houses where You can actually go into and loot them which makes surviving on them quite a challange (Not talking about switching maps to get resources and all). So I've come to a conclusion. Adding a door that functions like a any other loot crate. But it would be too easy, so let's make it more harder. Depending on the size of the building the door will have a chance of a undead attacking You, also usually doors would be locked and You would require a lockpick to open them for further looting but sometimes it would be open (that would increase the chance of undead attacking You).
Loot/undead attack probability :
(NOTE : Depending on the difficulty level the loot/undead could be either twiced or lowered)
Small building :
(Locked)
Undead :
1 undead : 25%
3 undead : 10%
5 undead : 5%
10 undead :1%
Loot :
Food : 35%
Water : 15%
Clothes : 40%
Backpacks : 14%
Tools : 12%
Medicines : 12%
Weapons : 10%
Gear (Kevlar,helmet) : 4%
Small building :
(Unlocked)
Undead :
1 undead : 45%
3 undead : 24%
5 undead : 15%
10 undead : 10%
Loot :
Food : 15%
Water : 11%
Clothes : 12%
Backpacks : 6%
Tools : 9%
Medicines : 9%
Weapons : 4%
Gear (Kevlar,helmet) : 1%
Medium building :
(LOCKED)
Undead :
1 undead : 30%
3 undead : 25%
5 undead : 10%
10 undead : 3%
Loot :
Food : 43%
Water : 20%
Clothes : 50%
Backpacks : 20%
Tools : 15%
Medicines : 20%
Weapons : 15%
Gear (Kevlar,helmet) : 5%
Medium building :
(UNLOCKED)
Undead :
1 undead : 40%
3 undead : 34%
5 undead : 21%
10 undead : 7%
Loot :
Food : 10%
Water : 9%
Clothes : 11%
Backpacks : 10%
Tools : 7%
Medicines : 3%
Weapons : 2%
Gear (Kevlar,helmet) : 0%
Big building :
(LOCKED)
Undead :
1 undead : 43%
3 undead : 38%
5 undead : 24%
10 undead : 13%
Loot :
Food : 51%
Water : 35%
Clothes : 82%
Backpacks : 43%
Tools : 38%
Medicines : 29%
Weapons : 40%
Gear (Kevlar,helmet) : 10%
Big building :
(UNLOCKED)
Undead :
1 undead : 50%
3 undead : 38%
5 undead : 24%
10 undead : 15%
Loot :
Food : 24%
Water : 15%
Clothes : 21%
Backpacks : 20%
Tools : 15%
Medicines : 10%
Weapons : 12%
Gear (Kevlar,helmet) : 2%
(NOTE : Undead can stack!. )

(UNDEAD)
Undead will be spawned outside and player will be forced quit from the looting as zombies chased the player outside of the building where he has to fight them.
(Undead will be spawned one at a time to avoid being stuck)

(WEAPONS)
Player will most likely find pistols/ammo for them,shotguns/ammo for them and sometimes assault rifles/ammo for them.

If You find any grammar errors feel free to inform me about them in the comment section! Same thing goes for opinion!
Thank You for reading! Have a nice day/evening!