From 0c673db43e6a6872ffc3ecf4db42b168ad375c70 Mon Sep 17 00:00:00 2001
From: Tor Andersson <tor@ccxvii.net>
Date: Fri, 18 Nov 2022 00:58:36 +0100
Subject: Add initial implementation of UI and rules.

---
 rules.js | 583 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 583 insertions(+)
 create mode 100644 rules.js

(limited to 'rules.js')

diff --git a/rules.js b/rules.js
new file mode 100644
index 0000000..51d2753
--- /dev/null
+++ b/rules.js
@@ -0,0 +1,583 @@
+"use strict"
+
+const data = require("./data")
+
+const RED_CUBE_POOL = 0
+const RED_CRISIS_TRACK = [1, 2, 3, 4]
+const RED_BONUS_CUBES = [ 5, 6, 7 ]
+const BLUE_CUBE_POOL = 8
+const BLUE_CRISIS_TRACK = [9, 10, 11, 12]
+const BLUE_BONUS_CUBES = [ 13, 14, 15 ]
+const S_ROYALISTS = 16
+const S_NATIONAL_ASSEMBLY = 17
+const S_REPUBLICANS = 18
+const S_CATHOLIC_CHURCH = 19
+const S_PRESS = 20
+const S_SOCIAL_MOVEMENTS = 21
+const S_MONT_VALERIEN = 22
+const S_BUTTE_MONTMARTRE = 23
+const S_FORT_D_ISSY = 24
+const S_BUTTE_AUX_CAILLES = 25
+const S_PERE_LACHAISE = 26
+const S_CHATEAU_DE_VINCENNES = 27
+const S_PRUSSIAN_OCCUPIED_TERRITORY = 28
+const S_VERSAILLES_HQ = 29
+
+var game, view
+
+var states = {}
+
+exports.scenarios = [ "Standard" ]
+
+exports.roles = [ "Commune", "Versailles" ]
+
+exports.action = function (state, current, action, arg) {
+	game = state
+	if (action in states[game.state]) {
+		states[game.state][action](arg, current)
+	} else {
+		if (action === "undo" && game.undo && game.undo.length > 0)
+			pop_undo()
+		else
+			throw new Error("Invalid action: " + action)
+	}
+	return game
+}
+
+exports.resign = function (state, current) {
+	game = state
+	if (game.state !== "game_over") {
+		log_br()
+		log(`${current} resigned.`)
+		game.state = "game_over"
+		game.active = null
+		game.state = "game_over"
+		game.result = (current === "Commune" ? "Versailles" : "Commune")
+		game.victory = current + " resigned."
+	}
+	return game
+}
+
+exports.is_checkpoint = function (a, b) {
+	return a.round !== b.round
+}
+
+exports.view = function(state, current) {
+	game = state
+
+	view = {
+		log: game.log,
+		prompt: null,
+		actions: null,
+
+		round: game.round,
+		initiative: game.initiative,
+		political_vp: game.political_vp,
+		military_vp: game.military_vp,
+
+		red_hand: game.red_hand.length,
+		blue_hand: game.blue_hand.length,
+		red_momentum: game.red_momentum,
+		blue_momentum: game.blue_momentum,
+
+		discs: game.discs,
+		cubes: game.cubes,
+
+		active_card: game.active_card,
+		hand: 0,
+		objective: 0
+	}
+
+	if (current === "Commune") {
+		view.hand = game.red_hand
+		view.objective = game.red_objective
+	}
+	if (current === "Versailles") {
+		view.hand = game.blue_hand
+		view.objective = game.blue_objective
+	}
+
+	if (game.state === "game_over") {
+		view.prompt = game.victory
+	} else if (current === "Observer" || (game.active !== current && game.active !== "Both")) {
+		if (states[game.state]) {
+			let inactive = states[game.state].inactive || game.state
+			view.prompt = `Waiting for ${game.active} to ${inactive}...`
+		} else {
+			view.prompt = "Unknown state: " + game.state
+		}
+	} else {
+		view.actions = {}
+		if (states[game.state])
+			states[game.state].prompt(current)
+		else
+			view.prompt = "Unknown state: " + game.state
+		if (view.actions.undo === undefined) {
+			if (game.undo && game.undo.length > 0)
+				view.actions.undo = 1
+			else
+				view.actions.undo = 0
+		}
+	}
+
+	return view
+}
+
+exports.setup = function (seed, scenario, options) {
+	game = {
+		seed: seed,
+		log: [],
+		undo: [],
+		active: "Both",
+		state: "choose_objective_card",
+
+		round: 1,
+		initiative: null,
+		political_vp: 0,
+		military_vp: 0,
+		red_momentum: 0,
+		blue_momentum: 0,
+
+		strategy_deck: [],
+		objective_deck: [],
+
+		red_hand: [ 34 ],
+		red_objective: 0,
+		blue_hand: [ 17 ],
+		blue_objective: 0,
+
+		cubes: [
+			// red cubes
+			RED_CRISIS_TRACK[0],
+			RED_CRISIS_TRACK[0],
+			RED_CRISIS_TRACK[0],
+			RED_CRISIS_TRACK[1],
+			RED_CRISIS_TRACK[1],
+			RED_CRISIS_TRACK[2],
+			RED_CRISIS_TRACK[2],
+			RED_CRISIS_TRACK[3],
+			RED_CRISIS_TRACK[3],
+			RED_BONUS_CUBES[0],
+			RED_BONUS_CUBES[0],
+			RED_BONUS_CUBES[1],
+			RED_BONUS_CUBES[1],
+			RED_BONUS_CUBES[2],
+			RED_BONUS_CUBES[2],
+			S_PRESS,
+			S_SOCIAL_MOVEMENTS,
+			S_PERE_LACHAISE,
+
+			// blue cubes
+			BLUE_CRISIS_TRACK[0],
+			BLUE_CRISIS_TRACK[1],
+			BLUE_CRISIS_TRACK[1],
+			BLUE_CRISIS_TRACK[2],
+			BLUE_CRISIS_TRACK[3],
+			BLUE_CRISIS_TRACK[3],
+			BLUE_BONUS_CUBES[0],
+			BLUE_BONUS_CUBES[1],
+			BLUE_BONUS_CUBES[2],
+			BLUE_BONUS_CUBES[2],
+			BLUE_CUBE_POOL,
+			BLUE_CUBE_POOL,
+			BLUE_CUBE_POOL,
+			BLUE_CUBE_POOL,
+			BLUE_CUBE_POOL,
+			BLUE_CUBE_POOL,
+			S_ROYALISTS,
+			S_PRESS,
+		],
+
+		discs: [ 0, 0, 0, 0 ],
+
+		active_card: 0,
+		count: 0,
+	}
+
+	log_h1("Red Flag Over Paris")
+	log_h1("Round 1")
+
+	for (let i = 1; i <= 41; ++i)
+		if (i !== 17 && i !== 34)
+			game.strategy_deck.push(i)
+
+	for (let i = 42; i <= 53; ++i)
+		game.objective_deck.push(i)
+
+	shuffle(game.strategy_deck)
+	shuffle(game.objective_deck)
+
+	for (let i = 0; i < 4; ++i) {
+		game.red_hand.push(game.strategy_deck.pop())
+		game.blue_hand.push(game.strategy_deck.pop())
+	}
+
+	for (let i = 0; i < 2; ++i) {
+		game.red_hand.push(game.objective_deck.pop())
+		game.blue_hand.push(game.objective_deck.pop())
+	}
+
+	return game
+}
+
+// === GAME STATES ===
+
+function is_objective_card(c) {
+	return c >= 42 && c <= 53
+}
+
+function is_strategy_card(c) {
+	return !is_objective_card(c) && c !== 17 && c !== 34
+}
+
+function enemy_player() {
+	if (game.active === "Commune")
+		return "Versailles"
+	return "Commune"
+}
+
+function player_hand(current) {
+	if (current === "Commune")
+		return game.red_hand
+	return game.blue_hand
+}
+
+function can_play_event(c) {
+	let side = data.cards[c].side
+	if (side === game.active || side === "Neutral")
+		return true
+	return false
+}
+
+function can_advance_momentum() {
+	if (game.active === "Commune")
+		return game.red_momentum < 3
+	return game.blue_momentum < 3
+}
+
+states.choose_objective_card = {
+	inactive: "choose an objective card",
+	prompt(current) {
+		view.prompt = "Choose an Objective card."
+		for (let c of player_hand(current)) {
+			if (is_objective_card(c)) {
+				gen_action("card", c)
+			}
+		}
+	},
+	card(c, current) {
+		if (current === "Commune") {
+			game.red_objective = c
+			game.red_hand = game.red_hand.filter(c => !is_objective_card(c))
+		} else {
+			game.blue_objective = c
+			game.blue_hand = game.blue_hand.filter(c => !is_objective_card(c))
+		}
+		if (game.red_objective > 0 && game.blue_objective > 0)
+			goto_initiative_phase()
+		else if (game.red_objective > 0)
+			game.active = "Versailles"
+		else if (game.blue_objective > 0)
+			game.active = "Commune"
+		else
+			game.active = "Both"
+	},
+}
+
+function goto_initiative_phase() {
+	game.active = "Commune"
+	game.state = "initiative_phase"
+}
+
+states.initiative_phase = {
+	inactive: "decide player order",
+	prompt() {
+		view.prompt = "Decide player order."
+		view.actions.commune = 1
+		view.actions.versailles = 1
+	},
+	commune() {
+		log("Initiative: Commune")
+		game.initiative = "Commune"
+		game.active = game.initiative
+		goto_strategy_phase()
+	},
+	versailles() {
+		log("Initiative: Versailles")
+		game.initiative = "Versailles"
+		game.active = game.initiative
+		goto_strategy_phase()
+	},
+}
+
+function goto_strategy_phase() {
+	clear_undo()
+	log_h2(game.active)
+	game.state = "strategy_phase"
+}
+
+function resume_strategy_phase() {
+	game.active = enemy_player()
+	goto_strategy_phase()
+}
+
+states.strategy_phase = {
+	inactive: "play a card",
+	prompt() {
+		view.prompt = "Play a card."
+		for (let c of player_hand(game.active)) {
+			console.log(game.active, "hand", c)
+			if (is_strategy_card(c)) {
+				if (can_play_event(c))
+					gen_action("card_event", c)
+				gen_action("card_ops", c)
+				if (game.active_card > 0 && can_play_event(game.active_card))
+					gen_action("card_use_discarded", c)
+				if (can_advance_momentum())
+					gen_action("card_advance_momentum", c)
+			}
+		}
+	},
+	card_event(c) {
+		push_undo()
+		log(`Played #${c} for event.`)
+		array_remove_item(player_hand(game.active), c)
+		game.active_card = c
+		goto_play_event()
+	},
+	card_ops(c) {
+		push_undo()
+		log(`Played #${c} for ${data.cards[c].ops} ops.`)
+		array_remove_item(player_hand(game.active), c)
+		game.active_card = c
+		game.count = data.cards[c].ops
+		game.state = "operations"
+	},
+	card_advance_momentum(c) {
+		push_undo()
+		log(`Played #${c} to advance momentum.`)
+		array_remove_item(player_hand(game.active), c)
+		game.active_card = c
+		if (game.active === "Commune")
+			game.red_momentum += 1
+		else
+			game.blue_momentum += 1
+		// TODO: momentum trigger
+		resume_strategy_phase()
+	},
+	card_use_discarded(c) {
+		push_undo()
+		log(`Discarded #${c} to play #${game.active_card}.`)
+		let old_c = game.active_card
+		array_remove_item(player_hand(game.active), c)
+		game.active_card = c
+		goto_play_event(old_c)
+	},
+}
+
+function goto_play_event(c) {
+	switch (c) {
+	// TODO
+	}
+	resume_strategy_phase()
+}
+
+// === COMMON LIBRARY ===
+
+function gen_action(action, argument) {
+	if (argument !== undefined) {
+		if (!(action in view.actions))
+			view.actions[action] = []
+		set_add(view.actions[action], argument)
+	} else {
+		view.actions[action] = 1
+	}
+}
+
+function random(range) {
+	// An MLCG using integer arithmetic with doubles.
+	// https://www.ams.org/journals/mcom/1999-68-225/S0025-5718-99-00996-5/S0025-5718-99-00996-5.pdf
+	// m = 2**35 − 31
+	return (game.seed = game.seed * 200105 % 34359738337) % range
+}
+
+function shuffle(list) {
+	for (let i = list.length - 1; i > 0; --i) {
+		let j = random(i + 1)
+		let tmp = list[j]
+		list[j] = list[i]
+		list[i] = tmp
+	}
+}
+
+// remove item at index (faster than splice)
+function array_remove(array, index) {
+	let n = array.length
+	for (let i = index + 1; i < n; ++i)
+		array[i - 1] = array[i]
+	array.length = n - 1
+	return array
+}
+
+// insert item at index (faster than splice)
+function array_insert(array, index, item) {
+	for (let i = array.length; i > index; --i)
+		array[i] = array[i - 1]
+	array[index] = item
+	return array
+}
+
+function array_remove_item(array, item) {
+	let i = array.indexOf(item)
+	if (i >= 0)
+		array_remove(array, i)
+}
+
+function set_clear(set) {
+	set.length = 0
+}
+
+function set_has(set, item) {
+	let a = 0
+	let b = set.length - 1
+	while (a <= b) {
+		let m = (a + b) >> 1
+		let x = set[m]
+		if (item < x)
+			b = m - 1
+		else if (item > x)
+			a = m + 1
+		else
+			return true
+	}
+	return false
+}
+
+function set_add(set, item) {
+	let a = 0
+	let b = set.length - 1
+	while (a <= b) {
+		let m = (a + b) >> 1
+		let x = set[m]
+		if (item < x)
+			b = m - 1
+		else if (item > x)
+			a = m + 1
+		else
+			return set
+	}
+	return array_insert(set, a, item)
+}
+
+function set_delete(set, item) {
+	let a = 0
+	let b = set.length - 1
+	while (a <= b) {
+		let m = (a + b) >> 1
+		let x = set[m]
+		if (item < x)
+			b = m - 1
+		else if (item > x)
+			a = m + 1
+		else
+			return array_remove(set, m)
+	}
+	return set
+}
+
+function set_toggle(set, item) {
+	let a = 0
+	let b = set.length - 1
+	while (a <= b) {
+		let m = (a + b) >> 1
+		let x = set[m]
+		if (item < x)
+			b = m - 1
+		else if (item > x)
+			a = m + 1
+		else
+			return array_remove(set, m)
+	}
+	return array_insert(set, a, item)
+}
+
+
+// Fast deep copy for objects without cycles
+function object_copy(original) {
+	if (Array.isArray(original)) {
+		let n = original.length
+		let copy = new Array(n)
+		for (let i = 0; i < n; ++i) {
+			let v = original[i]
+			if (typeof v === "object" && v !== null)
+				copy[i] = object_copy(v)
+			else
+				copy[i] = v
+		}
+		return copy
+	} else {
+		let copy = {}
+		for (let i in original) {
+			let v = original[i]
+			if (typeof v === "object" && v !== null)
+				copy[i] = object_copy(v)
+			else
+				copy[i] = v
+		}
+		return copy
+	}
+}
+
+function clear_undo() {
+	if (game.undo.length > 0)
+		game.undo = []
+}
+
+function push_undo() {
+	let copy = {}
+	for (let k in game) {
+		let v = game[k]
+		if (k === "undo")
+			continue
+		else if (k === "log")
+			v = v.length
+		else if (typeof v === "object" && v !== null)
+			v = object_copy(v)
+		copy[k] = v
+	}
+	game.undo.push(copy)
+}
+
+function pop_undo() {
+	let save_log = game.log
+	let save_undo = game.undo
+	game = save_undo.pop()
+	save_log.length = game.log
+	game.log = save_log
+	game.undo = save_undo
+}
+
+function log(msg) {
+	game.log.push(msg)
+}
+
+function log_br() {
+	if (game.log.length > 0 && game.log[game.log.length-1] !== "")
+		game.log.push("")
+}
+
+function logi(msg) {
+	game.log.push(">" + msg)
+}
+
+function log_h1(msg) {
+	log_br()
+	log(".h1 " + msg)
+	log_br()
+}
+
+function log_h2(msg) {
+	log_br()
+	log(".h2 " + msg)
+	log_br()
+}
-- 
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