貿易

Trade represents the transfer of goods or resources from one entity to another. There are multiple types of trade possible, each having different mechanics, and all play a large impact on the economy of an empire or even the entire galaxy.

For information about trade deals between empires, see Diplomacy#Trade deals.

Trade value

 Trade value represents the civilian and private-sector economy of an empire as well as the total value of all goods being traded. All pops generate a small amount of trade value based on their living standards, with higher living standard pops generating more trade value, and trade value also being produced by a number of different jobs, such as  職員（Clerk）s and  商人（Merchant）s. The trade value of a planet is further affected by its stability, level of crime, designation, and other factors. Additionally, small amounts of trade value can be found as deposits on celestial bodies.

Depending on the empire's trade policy, each unit of trade value is converted into  能量幣（Energy Credits）, and possibly  消費品（Consumer Goods）,  凝聚力（Unity）, or both.

Civilian trade is not available to  格式塔意識（Gestalt Consciousness） empires.  企業政府（Corporate） empires on the other hand are very efficient at generating and exploiting trade value.

The trade value of an empire can be modified by the following:

Source	Trade value
極端親外主義（Fanatic Xenophile） ethic	+20%
親外主義（Xenophile） ethic	+10%
自由商人（Free Traders） civic	+10%
投資者（Investor） ruler trait	+10%
經貿至上（Mercantile） diplomatic stance	+10%
Import / Export agenda	+5%
Marketplace of Better Ideas tradition	+10%
Mercantile 傳統樹 finisher	+10%
貿易聯盟（Trade League） federation, member	+5% per level after first, up to +20%
Level 5 貿易聯盟（Trade League） federation, president	+10%
First step of Trade League Federation Project	-5% or -10%
Completed Trade League Federation Project	+10% or +12%
Galactic Commerce Resolution	+5% per level, up to +25%
Galactic Trade Organization (Custodian Resolution)	+10%
Galactic Mobilization (Custodian Resolution)	-5%

The trade value produced on a planet can be further modified by the following:

Source	Trade value
節儉（Thrifty） pop trait	+25% from jobs
城邦商人（Enclave Trader） or  拜金教商人（Merchant of Numa） governor trait	+10%
Stability over 50	+0.6% per point, up to +30%
Stability under 50	-1% per point, down to -50%
Urban World Designation	+20%
Galactic Stock Exchange Building	+20%
Executive Retreat Corporate Building	+5%
Xeno-Outreach Agency Corporate Building	+5%
Criminal Job	flat -5
Smuggler Activity (Crime Event Planet Modifier)	-20%
Travel Advisory (Crime Event Planet Modifier)	-20%
Trade Pilfering (Crime Event Planet Modifier)	-20%

Trade collection

 Trade value is collected by starbases above outpost level. By default, starbases will only collect trade value from the system in which they are built, but their collection range can be extended by 1 hyperlane jump for each trade hub module present; the hyperlane registrar starbase building also extends the collection range by 1, as does adopting the  Mercantile 傳統樹. A starbase with one or more trade hub modules can also have a offworld trading company building, which produces   +2 trade value for every trade hub module on the starbase, up to a maximum of   +12 trade value on a starbase with 6 trade hubs. If the starbase is disabled or occupied, it will not collect trade value until it is restored. All trade value collected by a starbase is sent to the capital system, where it is converted into useable resources as determined by the empire's  trade 政策（Policy）.

Trade routes

A trade route is a path that connects a starbase collecting trade value to the capital system and is required for the trade value to be exploited. Each upgraded starbase has one outgoing trade route, which initially connects directly to the capital, but can be manually re-routed to any other starbase (select the base in trade route mapmode, then right-click on the target base to cancel or switch route). If the trade route of a starbase leads to another starbase, the receiving starbase will send both its own collected trade value and the trade value received from the other starbases further "downstream" towards the capital system. The length of a trade route has no direct effect on its trade value, and overlapping individual trade routes are equivalent to consolidated routes, thus the primary use of manually setting routes is to reduce piracy risk. Once the trade value reaches the empire's capital, the capital system must contain a starbase of higher than outpost level in order for the trade value to be converted into tangible resources.

Trade routes have their own map filter showing routes, protection, and piracy.

Commercial pacts

 商業協議（Commercial Pact）s provide each empire 10% of the other's trade value without reducing their own benefit. This trade value is then converted according to the receiving empire's  trade 政策（Policy）.

See also: Branch Office

 企業政府（Corporate） empires can establish branch offices on planets of other empires if: they have a commercial pact, are in a federation together, are their subject or overlord, or have the Imperial Charter or are the (unrecognized string 「sovereign」 for Template:Icon) Corporate Sovereign.  罪犯世家（Criminal Heritage） empires can always establish a branch office.  企業政府（Corporate） branch offices exploit 50% of a planet's trade value without reducing the planet owner's own profits. For  罪犯世家（Criminal Heritage） branch offices, the percentage will instead vary from 25% with 0  犯罪與異常（） to 75% with 100  犯罪與異常（）. Trade value exploited by branch offices is converted entirely into  能量幣（Energy Credits） regardless of the trade policy. They do not require trade routes.

Bypasses

See also: FTL#Bypasses

Trade value can be collected and routed through wormholes, gateways, and L-gates. Starbases with trade hub modules will collect trade value from the other side of a bypass, treating it as one hyperlane jump, as well as systems neighboring the other end within collection range. Trade routes will also be formed through a bypass if the path is shorter that way.

Piracy

Lucrative trade always risks attracting piracy. Every trade route that goes through a system without an upgraded starbase attracts (unrecognized string 「piracy」 for Template:Icon) piracy in that system, slowly growing for 10 years until it reaches 25% of the trade value going through the system. Piracy is countered in three ways:

1. All starbases bigger than outposts eliminate piracy in their systems.
2.  海盜鎮壓度（Piracy Suppression）: Fleets automatically decrease piracy for the systems in which they are located when max piracy is less than piracy suppression. As soon as all fleets leave a system, piracy will start rising again. The total piracy suppression of a fleet equals the sum of piracy suppression of individual ships in the fleet. The amount of piracy suppression per ship depends only on the ship's hull size, with corvettes being the best and titans being the worst.
   Any fleet can be given the patrol command in order to facilitate player's piracy suppression across their trade routes. A fleet under patrol command will travel from the starting waypoint, through intermediate ones, reaching an ending waypoint, then re-trace the route back and repeat indefinitely. (Starting and ending waypoints can coincide.) In order to set a patrol waypoint on a system, select one or more fleets, left-click Patrol or press P, and then left-click on a system; press Shift + left-click on another system in order to set additional waypoints.
3.  貿易保護（Trade Protection）: Starbases give a trade protection value representing heavily escorted convoys that cannot be attacked by pirates. A trade protection value ensures that the same amount of trade value cannot be lost to piracy. By default, this trade protection only applies to the system in which the starbase is located, but can be extended by 1 hyperlane per weapon module. Trade protection also does not extend outside of the territory of the empire to which the starbase belongs. A starbase's protection coverage can be seen in trade routes mapmode as the highlighted trade protection icons. Trade protection is lost immediately if a weapon module is queued for replacement; however, trade protection gained with new modules and upgrades is only shown upon monthly refresh. Trade protection is generated by the following:
   • +2 Base protection for having a starbase
   • +8 for each additional starbase level
   • +5 for each gun and missile battery module
   • +10 for each hangar bay module
   • Adopting the  Mercantile 傳統樹 adds an additional +5 trade protection in all owned systems.
   • The president of a level 3 or higher  貿易聯盟（Trade League） gains +5 trade protection in all owned systems.
   • Level 2 or 3 of Galactic Commerce resolution adds +10 trade protection for all Galactic Community members' systems.
   • Level 4 or 5 of Galactic Commerce resolution adds +25 trade protection for all Galactic Community members' systems.
   • The Anti-Piracy Initiative Custodian resolution adds +5 trade protection for all Galactic Community members' systems.

If piracy is left unchecked in a system, a pirate fleet may spawn and attack the system. The pirate will attack stations, destroying them, as well as the starbase itself. A system succumbed to pirate attack will be occupied by a pirate station. Pirate ships scale in number with the amount of intercepted  trade value, but their ship modules will never advance beyond tier 3. Destroying a pirate station awards  200 礦物（Minerals） and  100 能量幣（Energy Credits） energy, scaled by the empire's monthly income.

Trade value lost	Corvettes	Destroyers	Cruisers	Battleships
0-10	10	0	0	0
10-40	14	0	0	0
40-50	8	4	0	0
50-60	12	6	0	0
60-80	12	8	2	0
80-90	14	8	4	0
90-100	0	0	2	1
100+	12	0	0	1

Strategy

As the piracy suppression of individual ships stacks, when max piracy is high along a trade route, it is more effective to combine patrolling ships into one big fleet in order for fleet piracy suppression to approach or match max piracy and to reduce current piracy in one system towards a minimal amount at a time - ideally, current piracy in that system will not bounce back too much by the time the patrolling fleet returns; meanwhile, when max piracy is low, vice versa.

Since it is usually more effective have few fleets and each covering a number of systems, high fleet speed facilities suppression of piracy in player's empire, which in turn makes corvettes with their high speed on top of per ship piracy suppression extra effective at suppressing piracy.

If the player has only used the trade hub module in a starbase for trade value collection in early game in order to conserve the starbase's building slots, in late game, as more building slots become available, it can be more efficient to construct a hyperlane register building and swap a trade hub module for a weapons module in order to extend piracy protection while maintaining collection coverage. This also coincides with higher amounts of trade value that requires piracy protection in late game.

Since trade protection extends over wormholes, gateways and L-gates, player can prioritize weapon modules in starbases near wormholes, gateways and L-gates in order to overlap trade protection coverage. This coincides with the need for defense at or near wormholes, gateways and L-gates.

Connecting all trade hubs to the capital using gateways can eliminate piracy by removing unprotected systems from the trade routes.

The market

The market is available from the start to every empire and represents various actors within an empire with whom the empire itself can buy and sell resources. Resources are bought and sold for  能量幣（Energy Credits）, with their prices dependent on empire economy, supply and demand, and whether the galactic market is founded. The price can go as low as 20% and as high as 500% of the base price, further subject to market fee. Resources can be purchased either in bulk or by setting up a monthly trade and then setting a minimum sale/maximum purchase price. The market base prices are the following:

Resource	Price
礦物（Minerals）	1
食物（Food）	1
消費品（Consumer Goods）	2
合金（Alloys）	4
異星天然氣（Exotic Gases）	10
稀有水晶（Rare Crystals）	10
易爆微粒（Volatile Motes）	10
暗物質（Dark Matter）	20
活體金屬（Living Metal）	20
澤珞（Zro）	20

Galactic market

The galactic market is created by passing the 『Form the Galactic Market』 galactic priorities resolution. Once the resolution is passed the 『Galactic Market Nomination』 event will begin. For 5 years eligible empires may boost their chances by nominating one of their planets and by boosting their nomination bid.

The host for the glactic market is chosen by two kinds of random rolls. The first kind happens whenever the galactic market hub nomination decision is passed on a planet. At this moment a rating ranging from weak to strong is assigned randomly to the planet according to the weightings listed below under Rating weight. Thus, improving trade value of the planet later on will not retroactively improve the rating of the planet. Instead, this rating can be improved to the next best rating by passing the 『Boost Nomination Bid』 decision up to two times. Each empire can only nominate a single planet.

Once 5 years have passed the second kind of random roll happens determining the empire to host the galactic market. In this roll each empire is weighted according to the Winning weight listed below corresponding to the rating of their nominated planet. If they did not nominate a planet their Winning weight will be 0.5.

If the winning empire did not nominate a planet then one of their planets will be randomly chosen as the host of the galactic market. If they did nominate a planet then one of their planets will be chosen randomly where the nominated planet has weight 9999 and all other unnominated planets have weight 1.

The lottery weights are:

Rating	Requirements	Rating weight	Winning weight
None	No nomination, all eligible empires		0.5
Weak	Galactic Market Hub Nomination decision	9 x2 if  trade value below 50 x0.33 if  trade value above 100 x0.33 if  企業政府（Corporate） authority x1.5 if  格式塔意識（Gestalt Consciousness）	11
Adequate	Galactic Market Hub Nomination decision	6	21
Strong	Galactic Market Hub Nomination decision	1 x0.5 if  trade value below 50 x2 if  trade value above 120 x9 if  企業政府（Corporate） authority x0.75 if  格式塔意識（Gestalt Consciousness） x200 if planet is Ecumenopolis	31
Exceptional	Strong rating and 1 Boost Nomination Bid decision Adequate rating and 2 Boost Nomination Bid decision	0	51
Perfect	Strong rating and 2 Boost Nomination Bid decision	0	76

Empires may only access and trade on the galactic market if they are a member of the galactic community. The owner of the galactic market system gets a reduction in its market fee. Supply and demand on the galactic market affects the prices for every empire and large shifts in prices will affect the economy of every empire relying on importing or exporting a resource.  戰略資源（Strategic Resources） will not be available until at least one empire has them in stock.

Genocidal empires do not have access to the galactic market, because they cannot join the galactic community. If a Genocidal empire conquers the system hosting the galactic market the station will be moved to the nearest empire.

If the empire hosting the galactic market leaves the galactic community the nomination process will start over.

Slave market

Access to the slave market is granted once the galactic market is founded. Only empires that also have access to the galactic market will be able to use the slave market. Only pops that are enslaved are able to be sold on the slave market, with a base price of 500  能量幣（Energy Credits）, raised or lowered by species traits.

Empires that have the slavery policy set to Outlawed will set free any pop bought on the slave market but the pop price will be doubled. This can be useful for diversifying the empire or expanding colonial holdings by purchasing species with different habitability preferences, provided that a compatible planet or habitat is available for the purchased pop. Pre-sapient pops can also be bought on the slave market.

The slave market can be closed first for biological species and then for all species via galactic community resolutions.

Empires will be notified if there are slaves of their primary species put on sale.

Market fee

All sales or purchases on the internal and galactic market have a market fee added to them. The market fee starts at 30% and cannot go below 5%. It can be altered by the following:

• Trader Proxy Office starbase buildings: -5% each
• Import / Export agenda: -5%
•  Insider Trading tradition: -10%
•  Adaptive Programming tradition: -10%
• Hosting the Galactic Market: -10%
• The Economic Sanctions Galactic Community resolution will increase the market fee by +10%/ +20%/ +30%, per level of the resolution.

參考資料

遊戲概念