Fortress and Oasis supply.

2 files changed, 504 insertions, 202 deletions

diff --git a/play.js b/play.js
index 685e280..4410ab9 100644
--- a/play.js
+++ b/play.js
@@ -1,7 +1,5 @@
 "use strict"
 
-// TODO: intermediate regroup moves
-
 // https://www.redblobgames.com/grids/hexagons/
 
 const svgNS = "http://www.w3.org/2000/svg"
@@ -16,6 +14,13 @@ const hex_special = [ 48, 49, 102, 127, MALTA ]
 
 const unit_count = 94
 
+const SS_NONE = 0
+const SS_BASE = 1
+const SS_BARDIA = 2
+const SS_BENGHAZI = 3
+const SS_TOBRUK = 4
+const SS_OASIS = 5
+
 const ARMOR = 0
 const INFANTRY = 1
 const ANTITANK = 2
@@ -29,9 +34,9 @@ function is_allied_unit(u) { return (u >= 34 && u <= 93) }
 function is_elite_unit(u) { return unit_elite[u] }
 
 function is_armor_unit(u) { return unit_class[u] === ARMOR }
-function is_infantry_unit(u) { unit_class[u] === INFANTRY }
-function is_antitank_unit(u) { unit_class[u] === ANTITANK }
-function is_artillery_unit(u) { unit_class[u] === ARTILLERY }
+function is_infantry_unit(u) { return unit_class[u] === INFANTRY }
+function is_antitank_unit(u) { return unit_class[u] === ANTITANK }
+function is_artillery_unit(u) { return unit_class[u] === ARTILLERY }
 
 function is_recon_unit(u) { return unit_speed[u] === 4 }
 function is_mechanized_unit(u) { return unit_speed[u] === 3 }
@@ -103,6 +108,10 @@ let ui = {
 const AXIS = 'Axis'
 const ALLIED = 'Allied'
 
+function is_map_hex(x) {
+	return x < hex_exists.length && hex_exists[x] === 1
+}
+
 // === UNIT STATE ===
 
 const UNIT_DISRUPTED_SHIFT = 0
@@ -121,56 +130,32 @@ function is_unit_disrupted(u) {
 	return (view.units[u] & UNIT_DISRUPTED_MASK) === UNIT_DISRUPTED_MASK
 }
 
-function set_unit_disrupted(u) {
-	view.units[u] |= UNIT_DISRUPTED_MASK
-}
-
-function clear_unit_disrupted(u) {
-	view.units[u] &= ~UNIT_DISRUPTED_MASK
-}
-
 function unit_hex(u) {
 	return (view.units[u] & UNIT_HEX_MASK) >> UNIT_HEX_SHIFT
 }
 
-function set_unit_hex(u, x) {
-	view.units[u] = (view.units[u] & ~UNIT_HEX_MASK) | (x << UNIT_HEX_SHIFT)
-}
-
 function is_unit_supplied(u) {
 	return ((view.units[u] & UNIT_SUPPLY_MASK) >> UNIT_SUPPLY_SHIFT) !== 0
 }
 
 function unit_supply(u) {
-	let src = (view.units[u] & UNIT_SUPPLY_MASK) >> UNIT_SUPPLY_SHIFT
-	return hex_from_supply_source[src]
+	return (view.units[u] & UNIT_SUPPLY_MASK) >> UNIT_SUPPLY_SHIFT
 }
 
 function is_unit_unsupplied(u) {
-	return ((view.units[u] & UNIT_SUPPLY_MASK) >> UNIT_SUPPLY_SHIFT) === 0
-}
-
-function set_unit_supply(u, hex) {
-	let src = supply_source_from_hex(hex)
-	view.units[u] = (view.units[u] & ~UNIT_SUPPLY_MASK) | (src << UNIT_SUPPLY_SHIFT)
+	if (is_map_hex(unit_hex(u)))
+		return ((view.units[u] & UNIT_SUPPLY_MASK) >> UNIT_SUPPLY_SHIFT) === 0
+	return false
 }
 
 function unit_lost_steps(u) {
 	return (view.units[u] & UNIT_STEPS_MASK) >> UNIT_STEPS_SHIFT
 }
 
-function set_unit_lost_steps(u, n) {
-	view.units[u] = (view.units[u] & ~UNIT_STEPS_MASK) | (n << UNIT_STEPS_SHIFT)
-}
-
 function unit_steps(u) {
 	return unit_start_steps[u] - unit_lost_steps(u)
 }
 
-function set_unit_steps(u, n) {
-	set_unit_lost_steps(u, unit_start_steps[u] - n)
-}
-
 function is_unit_moved(u) {
 	return set_has(view.moved, u)
 }
@@ -340,13 +325,23 @@ for (let u = 0; u <= 93; ++u) {
 
 function on_focus_unit(evt) {
 	let u = evt.target.unit
-	let t = "(" + u + ")"
-	t += " " + unit_description[u]
-	t += " \"" + unit_name[u] + "\""
+	let t = ""
+	if (is_unit_revealed(u)) {
+		t += " " + unit_description[u]
+		t += " \"" + unit_name[u] + "\""
+	} else {
+		t = is_allied_unit(u) ? "Allied unit" : "Axis unit"
+	}
 	if (is_unit_disrupted(u))
 		t += " - disrupted"
 	if (is_unit_unsupplied(u))
 		t += " - unsupplied"
+	else {
+		if (unit_supply(u) === SS_BARDIA) t += " - Bardia supply"
+		if (unit_supply(u) === SS_TOBRUK) t += " - Tobruk supply"
+		if (unit_supply(u) === SS_BENGHAZI) t += " - Benghazi supply"
+		if (unit_supply(u) === SS_OASIS) t += " - Oasis supply"
+	}
 	if (is_unit_moved(u))
 		t += " - moved"
 	if (is_unit_fired(u))
@@ -663,7 +658,7 @@ function update_map() {
 			e.classList.toggle("selected", !view.battle && is_unit_selected(u))
 			e.classList.toggle("disrupted", is_unit_disrupted(u))
 			e.classList.toggle("moved", is_unit_moved(u))
-			// e.classList.toggle("unsupplied", is_unit_unsupplied(u))
+			e.classList.toggle("unsupplied", is_unit_unsupplied(u))
 			e.classList.toggle("revealed", is_unit_revealed(u))
 		}
 
diff --git a/rules.js b/rules.js
index e74e74c..141d56b 100644
--- a/rules.js
+++ b/rules.js
@@ -1,8 +1,5 @@
 "use strict"
 
-// TODO: fortress supply
-// TODO: oasis supply
-
 // TODO: RAIDERS
 // TODO: MINEFIELDS
 // TODO: legal pass withdrawal moves (reduce supply net, withdraw from fortress attack)
@@ -13,14 +10,19 @@
 
 // TODO: log summaries (deploy, rebuild, move, etc)
 // TODO: put initial deployment stack somewhere more accessible (spread out along the top?)
+// TODO: multi-select deployment
+
+// RULES: may units redeploying out of battle hex cross enemy controlled hexsides? (yes / doesn't matter)
+
+// RULES: can fortress supplied units be part of supply lines for non-fortress supplied units for withdrawals to base?
+// RULES: can non-fortress supplied units be part of supply lines for fortress supplied units for withdrawals?
 
 // RULES: for sea redeployment, can bases be "besieged"? (yes)
 // RULES: may units redeploying out of battle hex leave disrupted units behind to be routed? (no)
-// RULES: may units redeploying out of battle hex cross enemy controlled hexsides? (yes / doesn't matter)
 // RULES: may units returning for refit enter enemy supply network? (no)
 
 // RULES: if disrupted units are routed again during their "full enemy turn", can they still recover?
-// RULES: may oasis supplied units refuse battle or withdraw to base?
+// RULES: may oasis supplied units refuse battle or withdraw to base? (yes)
 // RULES: when is "fired" status cleared?
 // RULES: are minefields moved through (but not stopped at) revealed?
 
@@ -135,25 +137,11 @@ const SIWA_OASIS = 213
 const BARDIA_FT_CAPUZZO = 122
 
 const SS_NONE = 0
-const SS_EL_AGHEILA = 1
-const SS_ALEXANDRIA = 2
-const SS_BARDIA = 3
-const SS_BENGHAZI = 4
-const SS_TOBRUK = 5
-const SS_OASIS = 6
-
-const hex_from_supply_source = [ 0, EL_AGHEILA, ALEXANDRIA, BARDIA, BENGHAZI, TOBRUK ]
-
-function supply_source_from_hex(hex) {
-	switch (hex) {
-	case 0: return 0
-	case EL_AGHEILA: return 1
-	case ALEXANDRIA: return 2
-	case BARDIA: return 3
-	case BENGHAZI: return 4
-	case TOBRUK: return 5
-	}
-}
+const SS_BASE = 1
+const SS_BARDIA = 2
+const SS_BENGHAZI = 3
+const SS_TOBRUK = 4
+const SS_OASIS = 5
 
 const region_egypt = regions["Egypt"]
 const region_egypt_and_libya = regions["Libya"].concat(regions["Egypt"])
@@ -358,6 +346,7 @@ function is_unit_disrupted(u) {
 }
 
 function set_unit_disrupted(u) {
+	invalidate_caches()
 	game.units[u] |= UNIT_DISRUPTED_MASK
 }
 
@@ -384,12 +373,10 @@ function is_unit_unsupplied(u) {
 }
 
 function unit_supply(u) {
-	let src = (game.units[u] & UNIT_SUPPLY_MASK) >> UNIT_SUPPLY_SHIFT
-	return hex_from_supply_source[src]
+	return (game.units[u] & UNIT_SUPPLY_MASK) >> UNIT_SUPPLY_SHIFT
 }
 
-function set_unit_supply(u, hex) {
-	let src = supply_source_from_hex(hex)
+function set_unit_supply(u, src) {
 	game.units[u] = (game.units[u] & ~UNIT_SUPPLY_MASK) | (src << UNIT_SUPPLY_SHIFT)
 }
 
@@ -772,26 +759,38 @@ function capture_fortress(fortress, capacity) {
 
 // === FORTRESSES ===
 
-const FORTRESS_BIT = {
-	[BARDIA]: 1,
-	[BENGHAZI]: 2,
-	[TOBRUK]: 4,
+function fortress_bit(fortress) {
+	if (fortress === BARDIA) return 1
+	if (fortress === BENGHAZI) return 2
+	if (fortress === TOBRUK) return 4
+	return 0
+}
+
+function fortress_src(fortress) {
+	if (fortress === BARDIA) return SS_BARDIA
+	if (fortress === BENGHAZI) return SS_BENGHAZI
+	if (fortress === TOBRUK) return SS_TOBRUK
+	return SS_OASIS
+}
+
+function is_fortress_allied_controlled(fortress) {
+	return (game.fortress & fortress_bit(fortress)) === 1
 }
 
 function is_fortress_axis_controlled(fortress) {
-	return (game.fortress & FORTRESS_BIT[fortress]) === 0
+	return (game.fortress & fortress_bit(fortress)) === 0
 }
 
 function set_fortress_axis_controlled(fortress) {
-	game.fortress &= ~FORTRESS_BIT[fortress]
+	game.fortress &= ~fortress_bit(fortress)
 }
 
 function set_fortress_allied_controlled(fortress) {
-	game.fortress |= FORTRESS_BIT[fortress]
+	game.fortress |= fortress_bit(fortress)
 }
 
 function set_fortress_captured(fortress) {
-	let bit = FORTRESS_BIT[fortress] << 3
+	let bit = fortress_bit(fortress) << 3
 	if (game.fortress & bit)
 		return false
 	game.fortress |= bit
@@ -818,7 +817,7 @@ function set_fortress_friendly_controlled(fortress) {
 
 function is_fortress_besieged(fortress) {
 	let result = false
-	let besieged = is_fortress_axis_controlled() ? has_allied_unit : has_axis_unit
+	let besieged = is_fortress_axis_controlled(fortress) ? has_allied_unit : has_axis_unit
 	for_each_adjacent_hex(fortress, x => {
 		if (besieged(x))
 			result = true
@@ -1077,13 +1076,11 @@ function ind(d, msg, here, ...extra) {
 	//console.log(new Array(d).fill("-").join("") + msg, here, "("+hex_name[here]+")", extra.join(" "))
 }
 
-var supply_defender, supply_defender_sides, supply_friendly, supply_enemy, supply_net, supply_line
+var supply_defender, supply_defender_sides, supply_friendly, supply_enemy, supply_net, supply_line, supply_fortress_enemy
 var supply_visited = new Array(hexcount).fill(0)
 var supply_src = new Array(hexcount).fill(0)
 
 var trace_total
-var trace_highway
-var trace_chain
 
 function is_supply_line_blocked(here, next, side) {
 	// impassable hexside
@@ -1102,6 +1099,11 @@ function is_supply_line_blocked(here, next, side) {
 		}
 	}
 
+	// enemy controlled fortresses block supply lines
+	if (next === BARDIA || next === BENGHAZI || next === TOBRUK)
+		if (supply_fortress_enemy(next))
+			return true
+
 	// cannot trace through enemy hexsides
 	if (supply_friendly[here] && supply_enemy[here])
 		if (!set_has(supply_defender_sides, side))
@@ -1243,7 +1245,7 @@ function trace_supply_chain(here, d, n, range) {
 	return has_supply
 }
 
-function trace_supply_network(start) {
+function trace_supply_network(start, ss) {
 	supply_visited.fill(0)
 	supply_src.fill(0)
 	supply_net.fill(0)
@@ -1258,27 +1260,52 @@ function trace_supply_network(start) {
 			trace_supply_chain(x, 0, 0, 3)
 
 	console.log("SUPPLY VISITS", trace_total)
-	//debug_hexes("SS", supply_src)
-	//debug_hexes("SN", supply_net)
 }
 
-// For repeated supplied hex checks during deployment and fortress assignment
-function init_trace_supply_to_base_or_fortress(net, line) {
+function trace_fortress_network(fortress, ss) {
+	supply_visited.fill(0)
+	supply_src.fill(0)
+	supply_net.fill(0)
+	supply_line.fill(0)
+
+	supply_src[fortress] = 1
+	supply_net[fortress] = 1
+
+	trace_total = 0
+	for (let u = 0; u < unit_count; ++u) {
+		let x = unit_hex(u)
+		if (is_map_hex(x) && unit_supply(u) === ss) {
+			if (!supply_visited[x])
+				trace_supply_chain(x, 0, 0, 3)
+		}
+	}
+
+	console.log("FORTRESS SUPPLY VISITS", trace_total)
+}
+
+function init_trace_supply(net, line, friendly) {
 	if (presence_invalid)
 		update_presence()
 	supply_net = net
 	supply_line = line
-	if (is_axis_player()) {
+	if (friendly === AXIS) {
+		supply_fortress_enemy = is_fortress_allied_controlled
 		supply_defender = game.axis_hexes
 		supply_defender_sides = game.axis_sides
 		supply_friendly = presence_axis
 		supply_enemy = presence_allied
 	} else {
+		supply_fortress_enemy = is_fortress_axis_controlled
 		supply_defender = game.allied_hexes
 		supply_defender_sides = game.allied_sides
 		supply_friendly = presence_allied
 		supply_enemy = presence_axis
 	}
+}
+
+// For repeated supplied hex checks during deployment and fortress assignment
+function init_trace_supply_to_base_or_fortress() {
+	init_trace_supply(supply_temp_network, supply_temp_line, game.active)
 	supply_net.fill(0)
 }
 
@@ -1291,39 +1318,32 @@ function can_trace_supply_to_base_or_fortress(base, from) {
 
 function update_axis_supply() {
 	supply_axis_invalid = false
-	if (presence_invalid)
-		update_presence()
-
-	supply_net = supply_axis_network
-	supply_line = supply_axis_line
-	supply_defender = game.axis_hexes
-	supply_defender_sides = game.axis_sides
-	supply_friendly = presence_axis
-	supply_enemy = presence_allied
-
-	trace_supply_network(EL_AGHEILA)
+	init_trace_supply(supply_axis_network, supply_axis_line, AXIS)
+	trace_supply_network(EL_AGHEILA, 0)
 }
 
 function update_allied_supply() {
 	supply_allied_invalid = false
-	if (presence_invalid)
-		update_presence()
+	init_trace_supply(supply_allied_network, supply_allied_line, ALLIED)
+	trace_supply_network(ALEXANDRIA, 0)
+}
 
-	supply_net = supply_allied_network
-	supply_line = supply_allied_line
-	supply_defender = game.allied_hexes
-	supply_defender_sides = game.allied_sides
-	supply_friendly = presence_allied
-	supply_enemy = presence_axis
+function update_bardia_supply() {
+	supply_bardia_invalid = false
+	init_trace_supply(supply_bardia_network, supply_bardia_line, is_fortress_axis_controlled(BARDIA) ? AXIS : ALLIED)
+	trace_fortress_network(BARDIA, SS_BARDIA)
+}
 
-	trace_supply_network(ALEXANDRIA)
+function update_benghazi_supply() {
+	supply_benghazi_invalid = false
+	init_trace_supply(supply_benghazi_network, supply_benghazi_line, is_fortress_axis_controlled(BENGHAZI) ? AXIS : ALLIED)
+	trace_fortress_network(BENGHAZI, SS_BENGHAZI)
 }
 
-function update_supply() {
-	if (supply_axis_invalid)
-		update_axis_supply()
-	if (supply_allied_invalid)
-		update_allied_supply()
+function update_tobruk_supply() {
+	supply_tobruk_invalid = false
+	init_trace_supply(supply_tobruk_network, supply_tobruk_line, is_fortress_axis_controlled(TOBRUK) ? AXIS : ALLIED)
+	trace_fortress_network(TOBRUK, SS_TOBRUK)
 }
 
 function axis_supply_line() {
@@ -1351,8 +1371,10 @@ function allied_supply_network() {
 }
 
 function bardia_supply_line() {
+	console.log("X")
 	if (supply_bardia_invalid)
 		update_bardia_supply()
+	debug_hexes("bardia-line", supply_bardia_line)
 	return supply_bardia_line
 }
 
@@ -1387,14 +1409,24 @@ function tobruk_supply_network() {
 }
 
 function unit_supply_line(who) {
-	// TODO: fortress supply
+	// TODO: allow oasis supplied units to trace to base?
+	switch (unit_supply(who)) {
+	case SS_BARDIA: return bardia_supply_line()
+	case SS_BENGHAZI: return benghazi_supply_line()
+	case SS_TOBRUK: return tobruk_supply_line()
+	}
 	if (is_axis_unit(who))
 		return axis_supply_line()
 	return allied_supply_line()
 }
 
 function unit_supply_distance(who) {
-	// TODO: fortress supply
+	// TODO: allow oasis supplied units to trace to base?
+	switch (unit_supply(who)) {
+	case SS_BARDIA: return distance_to[BARDIA]
+	case SS_BENGHAZI: return distance_to[BENGHAZI]
+	case SS_TOBRUK: return distance_to[TOBRUK]
+	}
 	if (is_axis_unit(who))
 		return distance_to[EL_AGHEILA]
 	return distance_to[ALEXANDRIA]
@@ -1828,29 +1860,284 @@ function end_player_turn() {
 	goto_player_turn()
 }
 
-// === INITIAL & FINAL SUPPLY CHECK ===
+// === FORTRESS SUPPLY ===
 
-function goto_initial_supply_check() {
-	let snet = friendly_supply_network()
-	let ssrc = friendly_supply_base()
+function union_fortress_network(result, fort) {
+	for (let i = first_hex; i <= last_hex; ++i)
+		result[i] |= fort[i]
+}
 
-	// TODO: fortress supply
-	// TODO: assign fortress supply
+function union_fortress_line(result, fort) {
+	for (let i = 0; i < sidecount; ++i)
+		result[i] |= fort[i]
+}
 
+function union_axis_network() {
+	let net = axis_supply_network().slice()
+	if (net[BARDIA] === 0 && is_fortress_axis_controlled(BARDIA))
+		union_fortress_network(net, bardia_supply_network())
+	if (net[BENGHAZI] === 0 && is_fortress_axis_controlled(BENGHAZI))
+		union_fortress_network(net, benghazi_supply_network())
+	if (net[TOBRUK] === 0 && is_fortress_axis_controlled(TOBRUK))
+		union_fortress_network(net, tobruk_supply_network())
+	return net
+}
+
+function union_allied_network() {
+	let net = allied_supply_network().slice()
+	if (net[BARDIA] === 0 && is_fortress_allied_controlled(BARDIA))
+		union_fortress_network(net, bardia_supply_network())
+	if (net[BENGHAZI] === 0 && is_fortress_allied_controlled(BENGHAZI))
+		union_fortress_network(net, benghazi_supply_network())
+	if (net[TOBRUK] === 0 && is_fortress_allied_controlled(TOBRUK))
+		union_fortress_network(net, tobruk_supply_network())
+	return net
+}
+
+function union_axis_line() {
+	let net = axis_supply_network()
+	let line = axis_supply_line().slice()
+	if (net[BARDIA] === 0 && is_fortress_axis_controlled(BARDIA))
+		union_fortress_line(line, bardia_supply_line())
+	if (net[BENGHAZI] === 0 && is_fortress_axis_controlled(BENGHAZI))
+		union_fortress_line(line, benghazi_supply_line())
+	if (net[TOBRUK] === 0 && is_fortress_axis_controlled(TOBRUK))
+		union_fortress_line(line, tobruk_supply_line())
+	return line
+}
+
+function union_allied_line() {
+	let net = allied_supply_network()
+	let line = allied_supply_line().slice()
+	console.log("Xa")
+	if (net[BARDIA] === 0 && is_fortress_allied_controlled(BARDIA))
+		union_fortress_line(line, bardia_supply_line())
+	if (net[BENGHAZI] === 0 && is_fortress_allied_controlled(BENGHAZI))
+		union_fortress_line(line, benghazi_supply_line())
+	if (net[TOBRUK] === 0 && is_fortress_allied_controlled(TOBRUK))
+		union_fortress_line(line, tobruk_supply_line())
+	return line
+}
+
+const FORTRESS_HEX_LIST = [ BARDIA, BENGHAZI, TOBRUK ]
+const FORTRESS_SRC_LIST = [ SS_BARDIA, SS_BENGHAZI, SS_TOBRUK ]
+
+function all_friendly_unsupplied_units() {
+	let unsupplied = []
 	for_each_friendly_unit_on_map(u => {
-		let x = unit_hex(u)
-		if (snet[x]) {
-			set_unit_supply(u, ssrc)
-			if (is_unit_disrupted(u) && set_has(game.recover, u) && !is_battle_hex(x)) {
-				log(`Recovered at #${x}`)
-				set_delete(game.recover, u)
-				clear_unit_disrupted(u)
-			}
+		if (is_unit_unsupplied(u))
+			unsupplied.push(u)
+	})
+	return unsupplied
+}
+
+function resume_fortress_supply() {
+	while (game.assign < 3) {
+		if (assign_fortress_supply())
+			return
+		game.assign++
+	}
+	end_fortress_supply()
+}
+
+function end_fortress_supply() {
+	game.assign = 0
+	if (game.state === 'initial_fortress_supply')
+		game.state = 'initial_oasis_supply'
+	if (game.state === 'final_fortress_supply')
+		game.state = 'final_oasis_supply'
+	if (game.state === 'buildup_fortress_supply')
+		game.state = 'buildup_oasis_supply'
+	resume_oasis_supply()
+}
+
+function list_fortress_supply_candidates(fortress) {
+	let dist = distance_to[fortress]
+	let list = []
+	init_trace_supply_to_base_or_fortress()
+	for_each_friendly_unit_on_map(u => {
+		if (is_unit_unsupplied(u))
+			if (can_trace_supply_to_base_or_fortress(fortress, unit_hex(u)))
+				list.push(u)
+	})
+	list.sort((a,b) => dist[unit_hex(a)] - dist[unit_hex(b)])
+	return list
+}
+
+function auto_assign_fortress_supply(list, fortress, ss, ix) {
+	let total = 0
+	let dist = distance_to[fortress]
+	while (list.length > 0 && game.capacity[ix] > 0) {
+		let d0 = dist[unit_hex(list[0])]
+		let n = 0
+		for (let u of list)
+			if (dist[unit_hex(u)] === d0)
+				++n
+		if (n <= game.capacity[ix]) {
+			for (let u of list)
+				if (dist[unit_hex(u)] === d0)
+					set_unit_supply(u, ss)
+			game.capacity[ix] -= n
+			total += n
+			list = list.slice(n)
 		} else {
-			set_unit_supply(u, 0)
+			return true
+		}
+	}
+	return false
+}
+
+function assign_fortress_supply() {
+	let ix = game.assign
+	let ss = FORTRESS_SRC_LIST[ix]
+	let fortress = FORTRESS_HEX_LIST[ix]
+	let base_net = friendly_supply_network()
+
+	// Isolated friendly fortress with capacity!
+	if (!base_net[fortress] && is_fortress_friendly_controlled(fortress) && game.capacity[ix] > 0) {
+		let dist = distance_to[fortress]
+		let list = list_fortress_supply_candidates(fortress)
+		if (auto_assign_fortress_supply(list, fortress, ss, ix)) {
+			return true
+		}
+	}
+
+	return false
+}
+
+const xxx_fortress_supply = {
+	prompt() {
+		let ix = game.assign
+		let ss = FORTRESS_SRC_LIST[ix]
+		let fortress = FORTRESS_HEX_LIST[ix]
+		view.prompt = `Supply Check: Assign fortress supply to ${hex_name[fortress]} (${game.capacity[ix]} capacity left).`
+		if (game.capacity[ix] > 0) {
+			let list = list_fortress_supply_candidates(fortress)
+			if (list.length > 0) {
+				let dist = distance_to[fortress]
+				let d0 = dist[unit_hex(list[0])]
+				for (let u of list)
+					if (dist[unit_hex(u)] === d0)
+						gen_action_unit(u)
+			}
+		}
+		gen_action_next()
+	},
+	unit(who) {
+		let ix = game.assign
+		let ss = FORTRESS_SRC_LIST[ix]
+		push_undo()
+		game.capacity[ix]--
+		set_unit_supply(who, ss)
+	},
+	next() {
+		push_undo()
+		game.assign++
+		resume_fortress_supply()
+	},
+}
+
+states.initial_fortress_supply = xxx_fortress_supply
+states.final_fortress_supply = xxx_fortress_supply
+states.buildup_fortress_supply = xxx_fortress_supply
+
+// === OASIS SUPPLY ===
+
+const OASIS_HEX_LIST = [ JALO_OASIS, JARABUB_OASIS, SIWA_OASIS ]
+
+function resume_oasis_supply() {
+	while (game.assign < 3) {
+		if (assign_oasis_supply())
+			return
+		game.assign++
+	}
+	end_oasis_supply()
+}
+
+function end_oasis_supply() {
+	if (game.state === 'initial_oasis_supply')
+		goto_initial_supply_check_recover()
+	if (game.state === 'final_oasis_supply')
+		goto_final_supply_check_disrupt()
+	if (game.state === 'buildup_oasis_supply')
+		end_buildup_supply_check()
+}
+
+function assign_oasis_supply() {
+	let ix = game.assign
+	if (game.oasis[ix] > 0) {
+		let oasis = OASIS_HEX_LIST[ix]
+		let enemy_battle = is_axis_player() ? game.allied_hexes : game.axis_hexes
+		if (has_friendly_unit(oasis)) {
+			if (!set_has(enemy_battle, oasis)) {
+				let n = count_friendly_units_in_hex(oasis)
+				if (n > 1)
+					return true
+				if (n === 1) {
+					for_each_friendly_unit_in_hex(oasis, u => {
+						game.oasis[ix] = 0
+						set_unit_supply(u, SS_OASIS)
+					})
+				}
+			}
 		}
+	}
+	return false
+}
+
+const xxx_oasis_supply = {
+	prompt() {
+		let ix = game.assign
+		let oasis = OASIS_HEX_LIST[ix]
+		view.prompt = `Supply Check: Assign oasis supply to ${hex_name[oasis]}.`
+		for_each_friendly_unit_in_hex(oasis, u => {
+			gen_action_unit(u)
+		})
+	},
+	unit(who) {
+		let ix = game.assign
+		push_undo()
+		game.oasis[ix] = 0
+		set_unit_supply(who, SS_OASIS)
+		game.assign++
+		resume_oasis_supply()
+	},
+}
+
+states.initial_oasis_supply = xxx_oasis_supply
+states.final_oasis_supply = xxx_oasis_supply
+states.buildup_oasis_supply = xxx_oasis_supply
+
+// === INITIAL SUPPLY CHECK ===
+
+function goto_initial_supply_check() {
+	let base_net = friendly_supply_network()
+	for_each_friendly_unit_on_map(u => {
+		if (base_net[unit_hex(u)])
+			set_unit_supply(u, SS_BASE)
+		else
+			set_unit_supply(u, SS_NONE)
 	})
 
+	if (is_axis_player())
+		game.capacity = [ 1, 1, 2 ]
+	else
+		game.capacity = [ 2, 2, 5 ]
+	game.oasis = [ 1, 1, 1 ]
+
+	game.state = 'initial_fortress_supply'
+	game.assign = 0
+	resume_fortress_supply()
+}
+
+function goto_initial_supply_check_recover() {
+	for (let u of game.recover) {
+		if (is_unit_disrupted(u) && is_unit_supplied(u) && !is_battle_hex(unit_hex(u))) {
+			log(`Recovered at #${unit_hex(u)}`)
+			clear_unit_disrupted(u)
+		}
+	}
+
 	set_clear(game.recover)
 	for_each_enemy_unit_on_map(u => {
 		if (is_unit_disrupted(u))
@@ -1888,6 +2175,8 @@ states.initial_supply_check_rout = {
 	}
 }
 
+// === FINAL SUPPLY CHECK ===
+
 function goto_final_supply_check() {
 	set_active_player()
 
@@ -1897,20 +2186,28 @@ function goto_final_supply_check() {
 	capture_fortress(BENGHAZI, 2)
 	capture_fortress(TOBRUK, 5)
 
-	let snet = friendly_supply_network()
-	let ssrc = friendly_supply_base()
+	game.disrupt = all_friendly_unsupplied_units()
 
-	// TODO: fortress supply
-	// TODO: assign unused fortress supply
+	// Now in supply!
+	let base_net = friendly_supply_network()
+	for (let u of game.disrupt) {
+		if (base_net[unit_hex(u)])
+			set_unit_supply(u, SS_BASE)
+	}
 
-	for_each_friendly_unit_on_map(u => {
-		let x = unit_hex(u)
-		if (!snet[x] && !is_unit_disrupted(u) && !is_unit_supplied(u)) {
-			log(`Disrupted at #${x}`)
+	game.state = 'final_fortress_supply'
+	game.assign = 0
+	resume_fortress_supply()
+}
+
+function goto_final_supply_check_disrupt() {
+	for (let u of game.disrupt) {
+		if (!is_unit_disrupted(u) && !is_unit_supplied(u)) {
+			log(`Disrupted at #${unit_hex(u)}`)
 			set_unit_disrupted(u)
 		}
-	})
-
+	}
+	delete game.disrupt
 	goto_final_supply_check_rout()
 }
 
@@ -2244,6 +2541,7 @@ states.move = {
 		}
 	},
 	end_move() {
+		push_undo() // XXX
 		clear_undo()
 		log_br()
 		end_movement()
@@ -2554,6 +2852,7 @@ states.forced_marches = {
 			gen_action_unit(who)
 	},
 	unit(who) {
+		push_undo() // XXX
 		let via = unit_hex(who)
 		let ix = game.forced.findIndex(item => who === item[0])
 		let to = game.forced[ix][1]
@@ -2958,7 +3257,6 @@ function end_retreat() {
 
 function end_retreat_2() {
 	if (can_select_retreat_hex()) {
-	console.log("can_select_retreat_hex")
 		game.state = 'retreat_from'
 	}
 	else
@@ -3968,7 +4266,7 @@ function end_rout_fire() {
 	goto_rout_move()
 }
 
-// === BUILDUP ===
+// === BUILDUP - SUPPLY CHECK ===
 
 function end_month() {
 	// Forget captured fortresses (for bonus cards)
@@ -3990,6 +4288,7 @@ function goto_buildup() {
 }
 
 function goto_buildup_discard() {
+	log_br()
 	game.state = 'buildup_discard'
 	let hand = player_hand()
 	if (hand[REAL] + hand[DUMMY] === 0)
@@ -4012,74 +4311,52 @@ states.buildup_discard = {
 	},
 	next() {
 		clear_undo()
-		end_buildup_discard()
+		goto_buildup_supply_check()
 	},
 }
 
-function end_buildup_discard() {
+function goto_buildup_supply_check() {
+	let base_net = friendly_supply_network()
+	for_each_friendly_unit_on_map(u => {
+		if (base_net[unit_hex(u)])
+			set_unit_supply(u, SS_BASE)
+		else
+			set_unit_supply(u, SS_NONE)
+	})
+
+	if (is_axis_player())
+		game.capacity = [ 1, 1, 2 ]
+	else
+		game.capacity = [ 2, 2, 5 ]
+	game.oasis = [ 1, 1, 1 ]
+
+	game.state = 'buildup_fortress_supply'
+	game.assign = 0
+	resume_fortress_supply()
+}
+
+function end_buildup_supply_check() {
 	if (is_axis_player()) {
 		set_enemy_player()
 		goto_buildup_discard()
 	} else {
-		goto_buildup_supply_check()
-	}
-}
-
-function init_buildup() {
-	game.buildup = {
-		// redeployment network
-		axis_network: axis_supply_network().slice(),
-		axis_line: axis_supply_line().slice(),
-		allied_network: allied_supply_network().slice(),
-		allied_line: allied_supply_line().slice(),
-
-		// extra cards purchased
-		axis_cards: 0,
-		allied_cards: 0,
-
-		// remaining port capacity for sea redeployment
-		bardia: 2,
-		benghazi: 2,
-		tobruk: 5,
+		set_enemy_player()
+		goto_buildup_supply_check_recover()
 	}
 }
 
-function goto_buildup_supply_check() {
-	// TODO: fortress supply
-	// TODO: assign fortress supply
-
-	init_buildup()
-
-	for_each_axis_unit_on_map(u => {
-		let x = unit_hex(u)
-		if (supply_axis_network[x])
-			set_unit_supply(u, EL_AGHEILA)
-		else
-			set_unit_supply(u, 0)
-	})
-
-	for_each_allied_unit_on_map(u => {
-		let x = unit_hex(u)
-		if (supply_allied_network[x])
-			set_unit_supply(u, ALEXANDRIA)
-		else
-			set_unit_supply(u, 0)
-	})
-
-	for_each_unit_on_map(u => {
+function goto_buildup_supply_check_recover() {
+	for_each_friendly_unit_on_map(u => {
 		if (is_unit_supplied(u) && is_unit_disrupted(u) && !is_battle_hex(unit_hex(u))) {
 			log(`Recovered at #${unit_hex(u)}.`)
 			clear_unit_disrupted(u)
 		}
 	})
-
-	log_br()
-
-	resume_buildup_eleminate_unsupplied()
+	resume_buildup_eliminate_unsupplied()
 }
 
-function resume_buildup_eleminate_unsupplied() {
-	game.state = 'buildup_eleminate_unsupplied'
+function resume_buildup_eliminate_unsupplied() {
+	game.state = 'buildup_eliminate_unsupplied'
 	let done = true
 	for_each_friendly_unit_on_map(u => {
 		if (is_unit_unsupplied(u))
@@ -4087,16 +4364,15 @@ function resume_buildup_eleminate_unsupplied() {
 	})
 	if (done) {
 		if (is_axis_player()) {
-			log_br()
 			set_enemy_player()
-			resume_buildup_eleminate_unsupplied()
+			goto_buildup_supply_check_recover()
 		} else {
 			goto_buildup_point_determination()
 		}
 	}
 }
 
-states.buildup_eleminate_unsupplied = {
+states.buildup_eliminate_unsupplied = {
 	prompt() {
 		view.prompt = `Buildup: Eliminate unsupplied units.`
 		for_each_friendly_unit_on_map(u => {
@@ -4107,19 +4383,44 @@ states.buildup_eleminate_unsupplied = {
 	unit(u) {
 		log(`Eliminated at #${unit_hex(u)}`)
 		eliminate_unit(u)
-		resume_buildup_eleminate_unsupplied()
+		resume_buildup_eliminate_unsupplied()
 	},
 }
 
+// === BUILDUP - POINT DETERMINATION ===
+
+function init_buildup() {
+	game.buildup = {
+		// redeployment network
+		axis_network: union_axis_network(),
+		axis_line: union_axis_line(),
+		allied_network: union_allied_network(),
+		allied_line: union_allied_line(),
+
+		// extra cards purchased
+		axis_cards: 0,
+		allied_cards: 0,
+
+		// remaining port capacity for sea redeployment
+		bardia: 2,
+		benghazi: 2,
+		tobruk: 5,
+	}
+}
+
 function goto_buildup_point_determination() {
 	let axis, allied
 
+	// take union of supply networks?
+
+	init_buildup()
+
 	log_br()
 	if (game.scenario === "1940") {
 		axis = roll_die()
 		allied = roll_die()
 		log(`Axis rolled ${axis}.`)
-		log(`Allied rolled ${axis}.`)
+		log(`Allied rolled ${allied}.`)
 	} else {
 		let axis_a = roll_die()
 		let axis_b = roll_die()
@@ -4128,7 +4429,7 @@ function goto_buildup_point_determination() {
 		axis = axis_a + axis_b
 		allied = allied_a + allied_b
 		log(`Axis rolled ${axis_a} + ${axis_b}.`)
-		log(`Allied rolled ${axis_a} + ${axis_b}.`)
+		log(`Allied rolled ${allied_a} + ${allied_b}.`)
 	}
 
 	log(`Receive ${axis + allied} BPs.`)
@@ -4148,7 +4449,7 @@ function have_scheduled_reinforcements() {
 	let refit = friendly_refit()
 	for (let u = first_friendly_unit; u <= last_friendly_unit; ++u) {
 		let x = unit_hex(u)
-		if (x === refit || x === game.month || x === game.month + 1)
+		if (x === refit || x === hexdeploy + game.month || x === hexdeploy + game.month + 1)
 			return true
 	}
 }
@@ -4183,11 +4484,13 @@ function apply_reinforcements() {
 
 	for_each_friendly_unit_in_hex(friendly_refit(), u => {
 		set_unit_hex(u, base)
+		set_unit_supply(u, SS_BASE)
 		refitted++
 	})
 
 	for_each_friendly_unit_in_month(game.month, u => {
 		set_unit_hex(u, base)
+		set_unit_supply(u, SS_BASE)
 		scheduled++
 	})
 
@@ -4195,6 +4498,7 @@ function apply_reinforcements() {
 		for_each_friendly_unit_in_month(game.month + 1, u => {
 			if (roll_die() <= 2) {
 				set_unit_hex(u, base)
+				set_unit_supply(u, SS_BASE)
 				early++
 			}
 		})
@@ -4265,7 +4569,6 @@ function can_redeploy_from(from) {
 function is_controlled_port(where) {
 	if (where === BARDIA || where === BENGHAZI || where === TOBRUK)
 		return is_fortress_friendly_controlled(where)
-	console.log("not a porT", where)
 	return true
 }
 
@@ -4627,7 +4930,7 @@ function goto_free_deployment() {
 
 function is_valid_deployment_hex(base, x) {
 	// we've already seen this hex during a previous supplied hex check this go
-	if (supply_net[from] > 0)
+	if (supply_temp_network[x] > 0)
 		return true
 	if (can_trace_supply_to_base_or_fortress(base, x))
 		return true
@@ -4688,6 +4991,7 @@ states.free_deployment = {
 		push_undo()
 		log(`Deployed at #${to}.`)
 		set_unit_hex(who, to)
+		set_unit_supply(who, SS_BASE)
 	},
 	next() {
 		clear_undo()
@@ -4724,6 +5028,7 @@ states.initial_supply_cards = {
 		gen_action('keep')
 	},
 	discard() {
+		push_undo() // XXX
 		if (is_axis_player()) {
 			log(`Axis discarded their hand.`)
 			game.axis_hand[REAL] = 0
@@ -4739,6 +5044,7 @@ states.initial_supply_cards = {
 		}
 	},
 	keep() {
+		push_undo() // XXX
 		if (is_axis_player())
 			set_enemy_player()
 		else
@@ -4769,7 +5075,6 @@ function begin_game() {
 	// No initiative first month
 
 	goto_player_turn()
-	// goto_buildup()
 }
 
 // === SETUP ===
@@ -4812,6 +5117,7 @@ function setup_units(where, steps, list) {
 			set_unit_steps(u, unit_start_steps[u] + steps)
 		else if (steps > 0)
 			set_unit_steps(u, steps)
+		set_unit_supply(u, SS_BASE)
 	}
 }
 
@@ -5270,6 +5576,7 @@ exports.setup = function (seed, scenario, options) {
 		fortress: 7,
 		axis_award: 0,
 		allied_award: 0,
+		assign: 0,
 
 		// battle hexes (defender)
 		axis_hexes: [],
@@ -5369,10 +5676,10 @@ exports.query = function (state, current, q) {
 			}
 		} else {
 			return {
-				axis_supply: axis_supply_network(),
-				axis_supply_line: axis_supply_line(),
-				allied_supply: allied_supply_network(),
-				allied_supply_line: allied_supply_line(),
+				axis_supply: union_axis_network(),
+				axis_supply_line: union_axis_line(),
+				allied_supply: union_allied_network(),
+				allied_supply_line: union_allied_line(),
 			}
 		}
 	}