查看“影响力”的源代码

{{version|Heart of Darkness}}
'''影响力'''是八大[[列强]]独有的游戏机制。列强可以影响那些不是列强的国家，将他们纳入自己[[势力范围]]，或是排除出其他列强的势力范围。势力范围会自动地按照外交界面设定的优先级投资到相应的国家上。

影响力将在所有被设定了优先级的国家中按权重分配，低优先级国家1倍权重，中等优先级国家2倍权重，高优先级国家3倍权重。你积累的影响力可以用于不同的外交行动，最终目标是将国家加入你的[[势力范围]]。

请注意，如果只有一个国家被设定了优先级，那么无论优先级有多高，它都会被分配所有的影响力。同样地，仅把两个国家都设为高优先级和都设为中等优先级，效果也是一样的。影响力每天都在产生，如果没有任何国家被设定优先级，影响力就会平均分配给世界上的所有非列强国家，这和浪费无异。因此大国总是应该至少影响一个国家。

==影响力竞赛==
[[File:Influence Saxony.jpg|thumb|普鲁士在游戏开局时Prussia starts the game with a Cordial status in Saxony while it is in Austria's Sphere]]
影响力会基于外交界面设定的优先级自动投资到对应的国家上。

当以下情况发生时，你无法对一个国家投资影响力：
* 你的大使被另一个和你竞争的列强驱逐（通过下文列出的外交动作）。
* 你与目标国正在交战。
* 你与目标国之间有停战协定。
在这些情况下，目标国会被影响力机制忽略。所以你的影响力并没有浪费掉，而是投资在了其他国家上。

每日影响力的基数是{{green|+0.25}}，但是目标国会对影响力产生各种各样的修正。这些修正是叠加的，所以{{red|-50%}}修正和{{green|+75%}}修正的最终效果是{{green|+25%}}。当你在目标国拥有了100影响力之后，进一步的影响力投资将用于减少其他竞争列强的影响力。如果所有其他列强在目标国的影响力都是0，并且不对目标国设置优先级，那么你投资的影响力就浪费了。

===影响力修正===
*Power: The percentage of the influencing nation's total score that it is higher than the target nation's total score is given as a bonus to the influencing nation. This has a maximum {{green|+100%}} bonus, against nations with a score of zero, but can become a penalty in the rare case that a great power has a lower score than a non-great power.
*[[Vassal]]s: A nation gets {{green|+100%}} bonus to influence with its puppets and dominions. 
*[[Relation]]s: A nation's relations with the target nation is divided by ten and applied as a bonus or penalty (allowing for a maximum {{green|+20% bonus}}, or a minimum {{Red|-20%}} penalty).
*Neighbor: A nation that shares a border with the nation attempting to influence it grants a {{green|+50%}} bonus.
*Other [[Continent]]: A nation on a different continent than the nation attempting to influence it gives a {{Red|-50%}} penalty. Note that it is possible to have both the Neighbor bonus and Other Continent penalty.
*Other [[Foreign investment|Foreign Investors]]: If a nation has [[foreign investment|invested]] in the target nation, a {{Red|-50%}} penalty will be applied to all other influencers, unless they reduce the penalty by investing in the target nation themselves. If multiple nations have made investments, each suffers a penalty equal to -50%*(1 - Nation'sInvestment/TotalForeignInvestment). For example, if Nation A has invested £10,000 and Nation B has invested £20,000, then Nation A will suffer a {{Red|33.3%}} penalty, and Nation B a {{Red|16.6%}} penalty. Once a nation is suffering from this penalty, the only way it will ever disappear completely is if the other nation's investment is somehow removed e.g. by the [[decision]] [[Seize the means of production]].
*Population: Influencing nations get tremendous penalties in target nations with populations over 10 million (such as [[China|China]] and its larger substates), making them effectively impossible to sphere.

==Opinion==

Opinion is a measure, separate from [[relation]]s that ranks how close or far a [[great power]] is from adding a nation to its sphere of influence. 

The tiers, in descending order:
*In Sphere
*Friendly
*Cordial
*Neutral
*Opposed
*Hostile

Secondary powers that break free of a sphere of influence via the [[decision]] [[Leave Sphere of Influence]] will immediately drop down to "Opposed" opinion.

If a country has friendly opinion towards a great power and is on the losing side of a defensive war, the great power may intervene in the war. This automatically adds the "Status Quo" war goal and usually causes the great power to become a war leader.

==Diplomatic Actions==

As you gain influence with a nation, you can use that influence to do the following diplomatic actions. Note that any actions affecting other great powers can only be done if you have equal or higher opinion than that great power(as an example, you cannot discredit a great power that has cordial opinion with a nation unless you also have cordial or higher opinion of that nation). Unlike other diplomatic actions, actions regarding influence to not require any [[diplomatic points]].

*Increase Opinion ({{red|50}} Influence) - increases a nation's opinion of your nation to the next tier. Also gives {{green|+20}} relations. 
*Decrease Opinion ({{red|50}} Influence) - decreases a nation's opinion of another Great Power to the tier below. Also gives {{red|-10}} relations with the great power.
*Add to Sphere ({{red|100}} Influence, requires Friendly opinion and the nation not to be in any sphere of influence) - Adds a nation to your sphere of influence.
*Remove from Sphere ({{red|100}} Influence, requires Friendly opinion and the nation to be in another great power's sphere of influence) - Removes the nation from a great power's sphere of influence. Also gives {{red|-10}} relations with that great power. You can use this action to remove a nation from your own sphere as well. Removing a nation from your own sphere gives you a penalty of {{red|-10}} [[prestige]] and {{red|+1}} [[infamy]].
*Expel Advisors ({{red|50}} Influence) - Removes all the influence of another Great Power. Particularly effective if they have a high amount of influence. Also gives {{red|-5}} relations with the great power.
*Ban Embassy ({{red|65}} Influence) - Removes all the influence of another Great Power, and prevents them from influencing that nation for 1 year. Also gives {{red|-10}} relations with the great power.
*Discredit ({{red|25}} Influence) - Slows the rate of influence gain of another Great Power by 75% (additive with other bonuses) for six months. Also gives {{red|-5}} relations with the great power.

==Sphere of Influence==
[[File:Great Powers 1836.jpg|thumb|The Great Powers tab of the diplomacy screen, showing the eight great powers and which nations they have sphered]]
Adding a nation to your sphere of influence can be done peacefully by using the "add to sphere" diplomatic action or by releasing a nation. It can also be done militarily by several different [[casus belli]]. You can lose a sphered nation if you or another great power uses the "remove from sphere" diplomatic action or if the sphered nation becomes a great power itself. A [[rebels|revolution]] in a nation resets all diplomatic relationships, and thus removes the nation from any sphere of influence.

===Benefits of Spheres===
*If a nation is part of a great powers sphere of influence, a portion of its internal market is joined with its master country and all other members of that sphere of influence, making a larger and more versatile common market. The size of the portion depends on the status of the sphered nation. For uncivilized countries you get access to 100% of their market, for civilized countries 75% and for secondary powers 50%. For civilized and secondary powers, you can increase the percentage by [[investing]] in the country.
*Provides prestige when a nation is added to your sphere of influence
*Nations that are sphered are likely to accept all diplomatic requests, such as alliances and military access.
*A sphered nation won't be called into war against its sphere leader, even if it is an ally or satellite of the nation being attacked. 
*Enables some [[unification events]] and [[decisions]].

===Drawbacks of Spheres===

*Adding nations to the sphere can reduce [[tariff]] income since goods are purchased internally.
*Nations with large artisan populations (such as [[China]]) can outproduce national factories and put them out of business.

[[Category:外交]]