This repo is the start of a high performant pokemon battle simulator. It only uses integers.
I want you to implement the stat system of pokemon.
In the pokemon class, only save the values that are relevant to battle.
Make a PokemonInfo class that holds values not relevant to combat, but that can be used to calculate stats relevant to combat.

Combat:
Create fields for the HP, Attack, Defense, Sp. Atk, Sp. Def, Speed (max 20'000).
Create a value for friendship (max 255).

Info:
Each pokemon has its base stats that mirror the combat stats (HP, Attack, Defense, Sp. Atk, Sp. Def, Speed).
Create Effort Values (EV) that are like alternate values between 0-255 that mirror the combat stats .
There can only be 510 EV values max assigned in total.
Create Individual Values (IV) that are values between 0-31.
Implement pokemon natures, which increases the stat by either positive or negative 10%.
Create a stat formula for each generation.

Natures:
- Attack 	- Defense 	- Sp. Atk 	- Sp. Def 	- Speed
+ Attack 	Hardy 	Lonely 	Adamant 	Naughty 	Brave
+ Defense 	Bold 	Docile 	Impish 	Lax 	Relaxed
+ Sp. Atk 	Modest 	Mild 	Bashful 	Rash 	Quiet
+ Sp. Def 	Calm 	Gentle 	Careful 	Quirky 	Sassy
+ Speed 	Timid 	Hasty 	Jolly 	Naive 	Serious

formula for stats:
Generations I and II:
HP=⌊((Base+DV)×2+⌊⌈STATEXP⌉4⌋)×Level100⌋+Level+10
OtherStat=⌊((Base+DV)×2+⌊⌈STATEXP⌉4⌋)×Level100⌋+5

Generation III onward:
HP=⌊(2×Base+IV+⌊EV4⌋)×Level100⌋+Level+10
OtherStat=⌊(⌊(2×Base+IV+⌊EV4⌋)×Level100⌋+5)×Nature⌋