swsh-overworld-shiny-patch

Updates moved to https://github.com/Lincoln-LM/swsh-mods-exl

Patches/Cheats enabling shiny pokemon to be visible in the overworld in pokemon sword and shield.

10_compressed.mp4

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Download

Installation

Patches

Atmosphère

• Extract the zip to the root of your sd card and it should create sdmc://atmosphere/exefs_patches/swsh-overworld-shiny-patch/A16802625E7826BF83B6F9708E475B912A9AB7DF000000000000000000000000.ips (shield) and sdmc://atmosphere/exefs_patches/swsh-overworld-shiny-patch/A3B75BCD3311385AEED67FBEEB79CBB7BF02F471000000000000000000000000.ips (sword)
• You can remove the .ips file for the game you do not want to patch if you would only like to install the patch for one version
• The boosted.zip file contains patches that include a boosted shiny rate for overworld pokemon (~63%) for testing that the shiny models work
• The regular.zip patches contain only whats needed to display shiny models when a overworld spawn is shiny

Emulator

• Place the patches in the appropriate folder for exefs patches in your emulator of choice
• The same notes about boosted.zip and regular.zip from above apply here

Cheats

Atmosphère

• Extract the zip to the root of your sd card and it should create sdmc://atmosphere/contents/{TitleID}/cheats/{BuildID}.txt for TitleID:01008DB008C2C000 BuildID:A16802625E7826BF (shield) and TitleID:0100ABF008968000 BuildID:A3B75BCD3311385A (sword)
• Install a cheat manager like Edizon-SE
• The cheats file contains a cheat for boosted shiny rate for overworld pokemon (~63%) for testing & the cheat that allows shiny models to work

Emulator

• Place the cheat files in the appropriate folder for your emulator of choice

Alternatively you may install with IP-Switch and the *.pchtxt files in the repo

Notes

• This patch is possible because shininess of overworld pokemon is pre-determined and generated prior to their model (or "PokemonObject") being made visible
• PokemonObject's can already appear shiny (they are what's used for partner pokemon in IoA and CT)
• Overworld spawns specifically set a flag that tells the game to never show them shiny even when they are pre-determined to be
• The patch is surprisingly non-intrusive as it just needs to overwrite a single instruction to force this flag to show proper shininess
• It is unclear why the developers decided not to display shinines in the overworld, but it is possible PokemonObject's could not account for shininess prior to IoA/CT and they wanted to maintain parity with older versions
• The shiny odds boosting patch works by overwriting the "shiny rolls" parameter of pokemon generation to a constant value of 4095.
  • This results in the game always performing the 1/4096 check for shininess 4095 times, resulting in a roughly 63% chance of shininess