Tutorials

Tutorials may use diff syntax to show edits:

 this is some code
-delete red - lines
+add green + lines

Contents

• Miscellaneous
• How to add a new…
• How to edit the…
• Upgrades to existing features
• Removing features
• Features from different generations
• Custom features
• Legacy Compatibility
• Assembly programming
• To do

Miscellaneous

• Tips and tricks
• Useful unused data and routines
• Discovering GameShark cheat codes
• Simplify the Clock Reset Procedure
• Set DVs to 0 for all your Pokémon

How to add a new…

• Map and landmark
• Tileset (with custom palette)
• Pokémon species (up to 253)
• Trainer class
• Type (Fairy)
• Move (up to 255)
• Move effect
• Field move effect
• Item (up to 254, with various effects)
• TM or HM (up to 120)
• Party menu icon (up to 254)
• Overworld sprite
• Map object movement behavior
• Player gender (TODO)
• Mart (with new dialog and more items)
• Music song
• Pokémon stats page
• Pack pocket
• Radio channel
• Wild Pokémon slot
• Unown form
• Unown puzzle chamber
• Fishing rod
• Battle transition
• Spawn point (for Fly or Teleport)
• Text scrolling speed
• Scene script
• Move Tutor and new tutor moves
• Phone contact
• NPC that gives you an item
• Move Relearner/Reminder (Variant 1)

How to edit the…

• Town Map
• Battle HUD (TODO)
• Male and female player colors
• Default Player and Rival names

Upgrades to existing features

• Expand tilesets from 192 to 255 tiles
• Allow map tiles to appear above sprites (so NPCs can walk behind tiles) with PRIORITY colors
• Allow tiles to have different attributes in different blocks (including X and Y flip)
• Allow more than 15 object_events per map
• Improve the outdoor sprite system
• Improve the event initialization system
• Expand the Town Map tileset (Alternate)
• Increase Pokémon sprite animation size
• Color party menu icons by species
• Color Pokémon pictures shown in the overworld
• Allow more trainer parties, with individual DVs, stat experience, nicknames, variable teams, etc.
• Colored trainer card badges
• Show the tops of leaders' heads on the trainer card
• Add a third trainer card page for Kanto badges
• Print text when you lose a trainer battle
• Correct grammar for plural trainers like Twins
• Make evening the fourth time of day
• Custom order for the Old Pokédex mode
• Short beeping noise for low HP
• Remove the artificial save delay
• Option to show shiny colors in Pokédex
• Restore the GS Ball Celebi Event
• Improve the trainer rematch system
• Make wild encounters vary
• Make the Lottery Corner generate a lucky number daily instead of weekly
• Modify existing gender formula
• Force Set battle style or forbid item usage in battle
• Make new battle text to distinguish status move misses and fails
• Restore and localize the Japanese move grammar table
• Kurt finishes Apricorn Poké Balls instantly
• Harvest multiple items from fruit trees
• Make the field move Headbutt work with Kanto trees
• Prevent Steel types from being poisoned by Twineedle
• Evolve while holding an item
• Display more information on the move screen

Removing features

• Remove Pokémon sprite animations
• Remove the 25% failure chance for AI status moves
• Remove the redundant move grammar table
• Remove the opening intro
• Remove stat experience
• Reduce the command queue system to just stone tables
• Remove the gym badges boosts

Features from different generations

• Physical/Special split
• Replace stat experience with EVs
• Generation 6 Experience System (also reworks Exp. Share)
• Don't gain experience at level 100
• Erratic and Fluctuating experience growth rates
• Gain experience from catching Pokémon
• Lose money proportional to badges and level
• Survive poisoning with 1 HP
• Don't lose HP from poisoning in the overworld
• Show move names for TMs and HMs when receiving or buying
• Infinitely reusable TMs
• Automatically reuse Repel
• Evolution moves
• Running Shoes
• Rock Climb
• Dive
• Automatic battle weather on certain maps
• Make Sandstorm raise the Special Defense of Rock type Pokémon by 50%
• Show an icon for the current weather
• Show an icon for the current Time of Day
• Puddles that splash when you walk
• Use G/S SGB palettes for maps
• Use unique colors for each thrown Poké Ball
• Smashing rocks has a chance to contain items
• How To Add a Pocket PC
• Add spinner tiles from Generation I Rocket Hideout
• Grant Grass-type Pokémon immunity to Powder/Spore-based moves
• Add Hail as a new weather condition
• Allow tall grass in forests
• Battle Autoprompts
• SWSH Friendship Endure
• Replace the Freeze status with Frostbite
• Regional forms
• Name the rival during the intro
• Trashcan puzzle in Vermilion Gym
• Splash a Pokédex Entry from an Overworld Event (Generation I)
• Reviving Pokémon from Fossils (Gen I)
• Inverse Battles
• Move Reminder (Variant 2)

Custom features

• Adding a "Tradeback" NPC
• Items that act like HM field moves
• Level cap
• Customizable Pokédex Color
• Wall-to-wall carpeting in your room
• Disable jumping over ledges onto obstacle tiles or NPCs
• Add more music that changes at night
• Tweak ReadNoiseSample so Generation I music sounds properly
• Create Battle Palettes for Different Times of Day and Environments
• Improving the Swarm System
• Allow using a field move if the Pokémon can learn it
• Togglable Infinite Repel
• Password system
• Replace Menu Account with a small clock in the corner of the screen
• Fight a copy of your own party in the Trainer House

Some features might have a Feature branch instead.

Legacy Compatibility

• Add macros to support modern audio files in legacy pokecrystal

Assembly programming

• Optimizing assembly code
• Relevant links

To do

Feel free to contribute one of these!

• Add new...
  • Decoration for your room
  • Mail item
  • Wild data
  • Roaming Pokémon
  • Animated tiles
  • Object facing
  • Map event script command
  • Move effect script command
  • Scene for an existing map (aka triggers; auto-running event scripts)
  • Evolution methods (location, held item, move, etc)
  • More daily and weekly events
  • Third region
  • NPC or trainer which has a phone number with custom messages when called
• Features from other generations
  • Implement dynamic overhead+underfoot bridges
  • Trainer dialog and music change for their last Pokémon
  • Safari Game
  • Ghost and Silph Scope
  • Show quantity already in Pack in Marts
  • E-mail system (receive mail from NPCs by accessing PC)
  • Implement a low health warning song similar to the one in Black and White versions
• Gameplay tweaks
  • Bill calls to switch boxes when one is full
  • Nuzlocke mode (an in-game enforced Nuzlocke Challenge)
  • Challenge mode (forced set mode battles, no items can be used in battle by either the player or the AI, badge-dependent level caps)
  • Show metric units
• Code tweaks
  • Dynamic level scaling of Gym Leaders (like in the romhack Crystal Legacy)
  • Move standing+walking sprites to VRAM0, standing-only sprites to VRAM1; allocate 1:E0-FF for the map name sign; allocate 1:80-DF for more map tiles; add Polished Map support
  • Show more than two Pokédex pages
• Tutorials
  • Example map scripts
  • How to Add Multiple Rematch Parties for Gym Leaders + Elite 4 After Beating Red
  • Badge-Dependent Level-Caps (multiple level caps)