From e0a0d1a57d4ef0c45509f5241b0d1aebf312e4a1 Mon Sep 17 00:00:00 2001
From: Tor Andersson <tor@ccxvii.net>
Date: Fri, 2 Aug 2024 15:40:23 +0200
Subject: v2: foederati

---
 rules.js | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 51 insertions(+), 11 deletions(-)

diff --git a/rules.js b/rules.js
index 57ec240..bbc9550 100644
--- a/rules.js
+++ b/rules.js
@@ -142,6 +142,10 @@ const PRETENDER_ADJACENT = [
 	/* HISPANIA */ [ GALLIA, AFRICA ],
 ]
 
+function is_adjacent(a, b) {
+	return set_has(ADJACENT[a], b)
+}
+
 // BARBARIANS
 
 const ALAMANNI = 0
@@ -3288,7 +3292,7 @@ function gen_foederati(where) {
 	}
 }
 
-function can_play_foederati() {
+function can_play_foederati_v1() {
 	for (let i = 0; i < 6; ++i) {
 		let id = game.current * 6 + i
 		let where = get_general_location(id)
@@ -3301,6 +3305,27 @@ function can_play_foederati() {
 	return false
 }
 
+function can_play_foederati_v2() {
+	// v2: only Roman provinces and not adjacent
+	for (let i = 0; i < 6; ++i) {
+		let id = game.current * 6 + i
+		let where = get_general_location(id)
+		if (is_province(where) && can_foederati_from_region(where))
+			return true
+		where = get_governor_location(id)
+		if (is_province(where) && has_lone_militia(where) && can_foederati_from_region(where))
+			return true
+	}
+	return false
+}
+
+function can_play_foederati() {
+	if (is_classic())
+		return can_play_foederati_v1()
+	else
+		return can_play_foederati_v2()
+}
+
 function play_foederati() {
 	game.state = "foederati"
 }
@@ -3311,12 +3336,23 @@ states.foederati = {
 		prompt("Foederati: Choose an army you command...")
 		for (let i = 0; i < 6; ++i) {
 			let id = game.current * 6 + i
-			let where = get_general_location(id)
-			if (is_region(where) && can_foederati_from_region_or_adjacent(where))
-				gen_action_general(id)
-			where = get_governor_location(id)
-			if (is_province(where) && has_lone_militia(where) && can_foederati_from_region_or_adjacent(where))
-				gen_action_militia(where)
+			if (is_classic()) {
+				// v1: any region or from adjacent region
+				let where = get_general_location(id)
+				if (is_region(where) && can_foederati_from_region_or_adjacent(where))
+					gen_action_general(id)
+				where = get_governor_location(id)
+				if (is_province(where) && has_lone_militia(where) && can_foederati_from_region_or_adjacent(where))
+					gen_action_militia(where)
+			} else {
+				// v2: only Roman province and not adjacent
+				let where = get_general_location(id)
+				if (is_province(where) && can_foederati_from_region(where))
+					gen_action_general(id)
+				where = get_governor_location(id)
+				if (is_province(where) && has_lone_militia(where) && can_foederati_from_region(where))
+					gen_action_militia(where)
+			}
 		}
 	},
 	general(id) {
@@ -3340,8 +3376,10 @@ states.foederati_general = {
 			prompt("Foederati: Remove a barbarian.")
 		view.selected_general = game.count
 		gen_foederati(game.where)
-		for (let to of ADJACENT[game.where])
-			gen_foederati(to)
+		if (is_classic()) {
+			for (let to of ADJACENT[game.where])
+				gen_foederati(to)
+		}
 	},
 	barbarian(id) {
 		let tribe = get_barbarian_tribe(id)
@@ -3365,8 +3403,10 @@ states.foederati_militia = {
 		prompt("Foederati: Remove a barbarian.")
 		view.selected_militia = game.where
 		gen_foederati(game.where)
-		for (let to of ADJACENT[game.where])
-			gen_foederati(to)
+		if (is_classic()) {
+			for (let to of ADJACENT[game.where])
+				gen_foederati(to)
+		}
 	},
 	barbarian(id) {
 		let tribe = get_barbarian_tribe(id)
-- 
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