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敌人

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Revision as of 13:21, 13 May 2015 by SCucumber (talk | contribs)
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敌对生物就是想要来干(危害)玩家的生物。敌对生物分为三种:撕咬者,呕吐者和巨型虫子。每种敌对生物都有三个成长阶段。

生物

撕咬者

撕咬者是两个主要的敌人之一。它们是外星世界的土著,且不会与呕吐者和巨型虫子打架。撕咬者是节肢动物,生活在有机巢穴中。它们有三种尺寸:小的,中的和大的。在每一局自由模式开始时,只会生成小的。但是随着污染的增加,这与 进化有关系。 Biters are attracted by and enraged by pollution and will attempt to destroy its sources. They prefer to attack the player character, turrets and logistic robots and will stop searching for pollution if they can see and attack any of those. Biters deal physical damage.

Picture Name Info
File:SmallBiter-anim.gif Small Biter Weakest of biters, can be easily killed with a pistol.
  • Health: 15
File:MediumBiter-anim.gif Medium Biter Stronger and slower than the small biter. Can pose a problem for and even kill weaker players.
  • Health: 75

Resistances:

  • Explosion 0/10%
  • Physical 4/0%
File:BigBiter-anim.gif Big Biter Very resistant and dangerous, nearly immune to gunfire. Can attack through walls and hit objects directly behind them.
  • Health: 375

Resistances:

  • Explosion 0/10%
  • Physical 8/0%

Combat

The biter class enemy will likely be the most common threat to a player's factory. While any attack can catch an undefended factory off guard, most players will be able to handle attacks from small biters with relative ease. Medium biters often pose a much greater threat though and is still dwarfed by the big biters. They can however be managed with enough static defense.

Biters come fairly early to attack a factory that puts off much pollution, as pollution will attract an attack. Once the pollution reaches a nest, the player can expect biters to be showing up shortly. The attack group will be focused on destroying the source of the pollution, but will change targets as soon as one appears of higher priority, such as the player or static defense. Biters also have the ability to navigate around obstacles to find holes in the defense. This can be used to partially control the movement of the biters allowing turrets longer to damage them, but requires the "bait" of this trap be left open. Biters aren't always willing to fall for the bait. Some biters will choose the most direct route and will attack the walls of the trap regardless making them less predictable and more dangerous.

Spitters

Spitters are much like Biters. The only difference is - except their appearance - that they only have got a ranged attack. They spit at any opponents (e.g. players) with an acid projectile that can neither be dodged nor deal damage to anything else than the original target. Commonly the acid resistance of any buildings (like a turret) and armor is much less than its physical resistance. Because of this Spitters deal more average damage than Biters. Their behavior and sizes are very similar to the Biter ones, except their health and resistances.

Picture Name Info
File:SmallSpitter.png Small Spitter Weakest of spitters. Easy to kill with any weapon, but attacks at range.
  • Health: 10
File:MediumSpitter.png Medium Spitter Stronger and slower than the smaller version. Can pose a problem for and even kill weaker players. Attacks at range, making it dangerous for turrets.
  • Health: 50

Resistances:

  • Explosion 0/10%
File:BigSpitter.png Big Spitter The bulkiest of the spitters and so can take the most damage. Attacks at range, making it dangerous for turrets and the player.
  • Health: 200

Resistances:

  • Explosion 0/30%

Worms

The Worms are natural allies of Biters and Spitters and will attack you if you get close enough. They act like static turrets and will not follow you, but due to much greater range, in comparison to other enemies, will be able to inflict damage with out leaving the nest. However, their static nature does render them more vulnerable to certain attacks.

Like any other enemy, worms come in 3 sizes, their power increasing with size. Unlike Biters and Spitters, Big and Medium Worms can be created directly after start of a new game, and will not always spawn near spawners. Their appearance is not dependent on time. (see http://www.factorioforums.com/forum/viewtopic.php?f=23&t=6454)

Worms deal acid damage.

Picture Name Description
File:SmallWorm.png Small Worm A weak worm. Still not easy to kill though.
  • Health: 200
File:MediumWorm.png Medium Worm Medium worms are very dangerous to even more advanced players. They should be handled with care.
  • Health: 350

Resistances:

  • Explosion: 5/15%
  • Physical: 4/0%
File:BigWorm.png Big Worm Big worms are the most powerful enemy in factorio. They deal a high damage and are almost immune to common gunfire of any sort.
  • Health: 500

Resistances:

  • Explosion: 10/30%
  • Physical: 8/0%
Picture Name
Worm.gif Worm's animation

Spawners

Picture Name
File:Nest.gif Biter's Nest
File:Spitternest.gif Spitter's Nest

Evolution

The game evolution factor is a global variable that determines what kind of biters will be spawned. You can check the variable in the dev console:

game.player.print(game.evolutionfactor)

It goes from 0 (not evolved at all) to 1 (maximal evolution). At the moment the evolution factor can only increase. This evolution factor is increased by three kinds of events:

  • The passage of time very slightly increases the evolution factor.
  • The production of pollution (globally) increases the evolution factor.
  • Destroying the enemy spawners significantly increases the evolution factor.

All these values are set in mapsettings. There they can also be changed / modded.

Current (0.9.1) default settings are:

-- percentual increase in the evolution factor for 60 ticks (game second)
game.player.print(game.mapsettings.enemy_evolution.time_factor

0.000008

-- percentual increase in the evolution factor for 1000 Pollution Units
game.player.print(game.mapsettings.enemy_evolution.pollution_factor)

0.00003

-- percentual increase in the evolution factor for every destroyed enemy spawner
game.player.print(game.mapsettings.enemy_evolution.destroy_factor)

0.005

The percentages are applied on the base of (1 - current_evolution_factor). So for instance destroying the enemy spawner in the beginning of the game results in increase of evolution factor by 0.005 (half a percent) while doing this when the evolution factor is 0.5 the increase is only 0.0025 (quarter a percent).

As of 0.9.1 the biter spawning is done probabilistically based on the current evolution. Lets imagine a wheel - the "spawning wheel". We will be slicing that wheel as a cake. Small biters take the first 0.3 part of the wheel, medium ones the middle 0.3 part and big biters take the last 0.4. When a biter is about to be spawned the random point on the wheel is selected limited by the current evolution. So in theory while the evolution is below 0.3 there should be only small biters, then slowly medium ones will enter and in the end the big ones. The composition of the biter animation in the end should be 0.3-0.3-0.4. There is one more factor called the spawn_shift - this is a mechanism when the further away from the starting location the more the "rolling of the wheel" is shifted towards one. That means that if the shift is 0.2 for instance that at the time when evolution factor is 0.25 the result for spawning is actually 0.2 + 0.25 = 0.45 and a medium biter might be spawned.

Besides choosing what kind of biter will be spawned the evolution also influences the spawning interval. As of 0.9.1 this interval (spawning_cooldown in the enemy-spawner definition) is interpolated between 360 (0 evolution) and 150 (1 evolution) ticks.

All the values for the spawner (distribution of the biters based on evolution, the spawning shift, spawning_cooldown, etc.) can be modded from the data.

Expansions

Sometimes a small group of biters will leave their base to create a new base. This group will search for a suitable spot that's about 3 chunks away from existing biter bases and 3 chunks away from any of your buildings. Once they have found a suitable spot the group of biters dies and forms a new base. This new base will first be very small (about one spawner and a few worms) but will get some additional spawners within a small area as time passes. This base-wide expansion is somehow limited (the blog says something about 7, but that doesn't seem to match reality in some cases).