From fa7dc002cc5c6d560bc5246a5988ff9863fbbe9a Mon Sep 17 00:00:00 2001
From: Shiva Devarajan <arcubedgs@gmail.com>
Date: Mon, 18 Nov 2024 00:00:09 -0500
Subject: [PATCH] RBY tier shift, Gen 3 NFE

---
 config/formats.ts                 |  7 ++++++
 data/mods/gen1/formats-data.ts    | 12 +++++-----
 data/mods/gen9vgcgay/abilities.ts | 37 +++++++++++++++++++++++++++++++
 3 files changed, 50 insertions(+), 6 deletions(-)

diff --git a/config/formats.ts b/config/formats.ts
index b028c8dc69df..9c165cf34315 100644
--- a/config/formats.ts
+++ b/config/formats.ts
@@ -241,6 +241,13 @@ export const Formats: import('../sim/dex-formats').FormatList = [
 		ruleset: ['[Gen 3] OU', 'Pre RU Tier Shift Mod'],
 		searchShow: true,
 	},
+	{
+		name: "[Gen 3] NFE",
+		mod: 'gen3',
+		desc: `Only Pok&eacute;mon that can evolve are allowed.`,
+		ruleset: ['Standard', 'Not Fully Evolved'],
+		searchShow: true,
+	},
 	{
 		name: "[Gen 3] SU",
 		mod: 'gen3',
diff --git a/data/mods/gen1/formats-data.ts b/data/mods/gen1/formats-data.ts
index cee91e083f65..308dc191b965 100644
--- a/data/mods/gen1/formats-data.ts
+++ b/data/mods/gen1/formats-data.ts
@@ -72,7 +72,7 @@ export const FormatsData: import('../../../sim/dex-species').ModdedSpeciesFormat
 		tier: "ZUBL",
 	},
 	pikachu: {
-		tier: "IU",
+		tier: "SU",
 	},
 	raichu: {
 		tier: "UU",
@@ -219,7 +219,7 @@ export const FormatsData: import('../../../sim/dex-species').ModdedSpeciesFormat
 		tier: "UU",
 	},
 	geodude: {
-		tier: "IU",
+		tier: "SU",
 	},
 	graveler: {
 		tier: "PU",
@@ -249,7 +249,7 @@ export const FormatsData: import('../../../sim/dex-species').ModdedSpeciesFormat
 		tier: "IU",
 	},
 	doduo: {
-		tier: "IU",
+		tier: "SU",
 	},
 	dodrio: {
 		tier: "UU",
@@ -318,7 +318,7 @@ export const FormatsData: import('../../../sim/dex-species').ModdedSpeciesFormat
 		tier: "SU",
 	},
 	hitmonchan: {
-		tier: "IU",
+		tier: "SU",
 	},
 	lickitung: {
 		tier: "SU",
@@ -351,7 +351,7 @@ export const FormatsData: import('../../../sim/dex-species').ModdedSpeciesFormat
 		tier: "NU",
 	},
 	goldeen: {
-		tier: "8U",
+		tier: "SU",
 	},
 	seaking: {
 		tier: "PU",
@@ -417,7 +417,7 @@ export const FormatsData: import('../../../sim/dex-species').ModdedSpeciesFormat
 		tier: "UU",
 	},
 	kabuto: {
-		tier: "SU",
+		tier: "IU",
 	},
 	kabutops: {
 		tier: "NU",
diff --git a/data/mods/gen9vgcgay/abilities.ts b/data/mods/gen9vgcgay/abilities.ts
index 1471fcdac663..647198e7766c 100644
--- a/data/mods/gen9vgcgay/abilities.ts
+++ b/data/mods/gen9vgcgay/abilities.ts
@@ -1277,6 +1277,43 @@ export const Abilities: import('../../../sim/dex-abilities').ModdedAbilityDataTa
 			if (type === 'Ground' && move.type === 'Electric') return -1;
 		},
 	},
+	forecast: {
+		inherit: true,
+		shortDesc: "Castform's type changes to the current weather condition's type",
+		onWeatherChange(pokemon) {
+			if (pokemon.baseSpecies.baseSpecies !== 'Castform' || pokemon.transformed) return;
+			let forme = null;
+			if (pokemon.species.id !== 'castform') forme = 'Castform';
+			let type = "Normal";
+			switch (pokemon.effectiveWeather()) {
+			case 'sunnyday':
+			case 'desolateland':
+				if (pokemon.species.id !== 'castformsunny') forme = 'Castform-Sunny';
+				type = "Fire";
+				break;
+			case 'raindance':
+			case 'primordialsea':
+				if (pokemon.species.id !== 'castformrainy') forme = 'Castform-Rainy';
+				type = "Water";
+				break;
+			case 'hail':
+			case 'snow':
+				if (pokemon.species.id !== 'castformsnowy') forme = 'Castform-Snowy';
+				type = "Ice";
+				break;
+			case 'sandstorm':
+				type = "Rock";
+				break;
+			}
+			if (pokemon.isActive && forme) {
+				pokemon.formeChange(forme, this.effect, false, '[msg]');
+			}
+			if (type && pokemon.getTypes().join() !== type) {
+				if (!pokemon.setType(type)) return;
+				this.add('-start', pokemon, 'typechange', type, '[from] ability: Forecast');
+			}
+		},
+	},
 	// As One now gives Symbioisis
 	asoneglastrier: {
 		inherit: true,