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diff --git a/Add-a-new-radio-channel.md b/Add-a-new-radio-channel.md new file mode 100644 index 0000000..e1a676d --- /dev/null +++ b/Add-a-new-radio-channel.md @@ -0,0 +1,158 @@ +This tutorial teaches you how to add a new radio channel in pokecrytsal.(radio channels with text coming soon!) + +for this tutorial were going to add national park as a channel that plays its music. + + +## Contents + +1. [Define a radio constant](#1-define-a-radio-constant) +2. [Give the type a name](#2-give-the-type-a-name) +3. [List the type matchups](#3-list-the-type-matchups) +4. [Make it searchable in the Pokédex](#4-make-it-searchable-in-the-pokédex) +5. [Update Pokémon types](#5-update-pokémon-types) +6. [Update move types](#6-update-move-types) +7. [Change `POLKADOT_BOW` to boost Fairy moves](#7-change-polkadot_bow-to-boost-fairy-moves) + + +## 1. Define a radio constant + + +Edit [constants/radio_constants.asm](../blob/master/constants/radio_constants.asm): + +```diff +; radio channel ids +; indexes for: +; - RadioChannelSongs (see data/radio/channel_music.asm) +; - PlayRadioShow/RadioJumptable (see engine/pokegear/radio.asm) +; - RadioChannels (see engine/pokegear/radio.asm) + const_def + const OAKS_POKEMON_TALK ; 00 + const POKEDEX_SHOW ; 01 + const POKEMON_MUSIC ; 02 + const LUCKY_CHANNEL ; 03 + const BUENAS_PASSWORD ; 04 + const PLACES_AND_PEOPLE ; 05 + const LETS_ALL_SING ; 06 + const ROCKET_RADIO ; 07 + const POKE_FLUTE_RADIO ; 08 + const UNOWN_RADIO ; 09 + const EVOLUTION_RADIO ; 0a ++ const NATIONAL_PARK_RADIO +``` + + +## 2. Define a pointer to the radio station. + + +Edit [engine/pokegear/radio.asm](../blob/master/engine/pokegear/radio.asm): + +```diff +RadioJumptable: +; entries correspond to constants/radio_constants.asm + dw OaksPKMNTalk1 ; $00 + dw PokedexShow1 ; $01 + dw BenMonMusic1 ; $02 + dw LuckyNumberShow1 ; $03 + dw BuenasPassword1 ; $04 + dw PeoplePlaces1 ; $05 + dw FernMonMusic1 ; $06 + dw RocketRadio1 ; $07 + dw PokeFluteRadio ; $08 + dw UnownRadio ; $09 + dw EvolutionRadio ; $0a ++ dw NationalParkRadio +``` + +```diff +UnownRadio: + call StartRadioStation + ld a, 1 + ld [wNumRadioLinesPrinted], a + ret + +EvolutionRadio: + call StartRadioStation + ld a, 1 + ld [wNumRadioLinesPrinted], a + ret ++ ++NationalParkRadio: ++ call StartRadioStation ++ ld a, 1 ++ ld [wNumRadioLinesPrinted], a ++ ret +``` + +## 3. Define the music for the channel. + + +Edit [data/radio/channel_music.asm](../blob/master/data/radio/channel_music.asm): + + +```diff +RadioChannelSongs: +; entries correspond to radio channel ids + dw MUSIC_POKEMON_TALK + dw MUSIC_POKEMON_CENTER + dw MUSIC_TITLE + dw MUSIC_GAME_CORNER + dw MUSIC_BUENAS_PASSWORD + dw MUSIC_VIRIDIAN_CITY + dw MUSIC_BICYCLE + dw MUSIC_ROCKET_OVERTURE + dw MUSIC_POKE_FLUTE_CHANNEL + dw MUSIC_RUINS_OF_ALPH_RADIO + dw MUSIC_LAKE_OF_RAGE_ROCKET_RADIO ++ dw MUSIC_NATIONAL_PARK +``` + + +## 4. Set the name of the channel and add a pointer for loading it + +```diff +; 917c3 (24:57c3) + +BuenasPasswordName: db "BUENA'S PASSWORD@" +NotBuenasPasswordName: db "@" ++NationalParkName: db "Narional Park@" ++ ++LoadStation_NationalPark: ++ ld a, TESTSTATION_RADIO ++ ld [wCurrentRadioLine], a ++ xor a ++ ld [wNumRadioLinesPrinted], a ++ ld a, BANK(PlayRadioShow) ++ ld hl, PlayRadioShow ++ call Radio_BackUpFarCallParams ++ ld de, NationalParkName ++ ret +``` + + +## 5. Set the channel to a frequency you like + +i set mine to 15 + +```diff +RadioChannels: +; entries correspond to constants/radio_constants.asm + +; frequency value given here = 4 × ingame_frequency − 2 + dbw 16, .PKMNTalkAndPokedexShow + dbw 28, .PokemonMusic + dbw 32, .LuckyChannel + dbw 40, .BuenasPassword + dbw 52, .RuinsOfAlphRadio ++ dbw 58, .NationalPark + dbw 64, .PlacesAndPeople + dbw 72, .LetsAllSing + dbw 78, .PokeFluteRadio + dbw 80, .EvolutionRadio + db -1 +``` + +johto exclusive channel + +```diff +.TestStation: + jp LoadStation_TestStation
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