Lincoln-LM

from math import log2
from time import perf_counter_ns
import numpy as np
import pyopencl as cl

BASE_ADVANCE = 45

class TinyMT:
    def __init__(self, seed):
        self.state = [seed, 0x8F7011EE, 0xFC78FF1F, 0x3793FDFF]

Lincoln-LM

{
    "areas/a_0201.json": [
        {
            "pos": [
                16737.070312,
                2100.0,
                8907.0
            ],
            "max_spawns": 1
        },

Lincoln-LM

from io import BytesIO
import struct
from dataclasses import dataclass
import lz4.block
import os


def fnv1a(s: str):
    """FNV1a hash"""
    h = 0xCBF29CE484222645

Lincoln-LM

from hashlib import sha1

with open("savedata.bin", "rb") as savedata:
    data = bytearray(savedata.read())

for chunk in range(0x33ff, -1, -1):
    chunk_pos = chunk << 4
    for i in range(16):
        data[chunk_pos + i] = (
            data[chunk_pos + i] - data[chunk_pos + ((chunk + i) & 0xF) - 16]

Lincoln-LM

Name: Randomized Spawns
Author: Lincoln-LM

c2159ad0 00000008
809e0020 28041752
4182002c 38600000
3880022c 3d80801a
398cdef0 7d8803a6
4e800021 3c808036
3884df88 1c63001c

Lincoln-LM

Lincoln-LM

GRADIENT = [
    [1, 1],
    [-1, 1],
    [1, -1],
    [-1, -1],
    [1, 0],
    [-1, 0],
    [1, 0],
    [-1, 0],
    [0, 1],

Lincoln-LM

# Heavily based on LattiCG

using JuMP, CDDLib, Nemo

const MULT::BigInt = 0x5D588B656C078965
const ADD::BigInt = 0x269EC3
const MOD::BigInt = BigInt(1) << 64

"Bound the RNG state based on a given rand(maximum) value"
function bounds(value, maximum = 1 << 32)

Lincoln-LM

3 shiny roll chance:
fraction: 50319361/68719476736
decimal: 0.000732243075617589056491851806640625
repeats from digit None onward
alternate fraction: 1/1365.66672092676216615707818706203363750982449876499822801803862334420343692361276209369987826355744064397002179737536810135565910703834255764893357846893167025710044290904250552784245412019441184875141796812562862235074884993074534471930198000725804129348939864319819164635258384938552776932123601490090464384076737381462375883509331527481042535496426514637179116801582595613644616830487970624269254929529013693158782362121013420659296528030234724165118074531987796903859729061344797283892376932211042982044227469422753599752588273130097975608235565630493598676660460771749466373390552395925695479320574043060681951028750146489340355494577922005011152665472043653336535811732585395907551369740168202851383585733531075643031317508185368252192232727279664779526910129085303766079223462317019486793562422225512760386603478529864479002426123813456216186847046805701686076657

Lincoln-LM

Hidden Encounters

Pseudocode

All functions detailed here are cleaned up from the pseudocode produced by Ghidra of Pokemon Shield

Some function names are taken from leftover symbols but the rest are chosen based on utility

FUN_7100dc8590 is called every step