Detection and Locating

Core rules:\

  1. Every means of detectiondetection侦测Becoming aware that something is there. and anti-detection has its own "detection level" or "anti-detection level", set by its RankRank支线The power grade of abilities and rewards: Unranked, D, C, B, A, S. Prices combine Ranks and Reward Points, e.g. DD+1200 = two D-Ranks and 1,200 points..\
  2. Means of detection and anti-detection each have one of four EssencesEssence本质The fundamental nature of a resource or effect: Natural, Technological, Magical, or Anomalous.: Natural, Technological, Magical, or Anomalous. When the two sides' Essences differ, the detecting side counts as one Rank higher.\
  3. A means of detection is something that already provides a perceptual ability for direct observation. If the means can't locate approximately or precisely to begin with, this rule doesn't make it able to.

Core concepts:
Locating a target: when a player knows where a target is, they have located it. Locating comes in two kinds, pinpointedpinpointed精确定位Knowing exactly where a target is. and approximate locationapproximate location模糊定位Knowing only roughly where a target is.. Pinpointed: knowing exactly where the target is. In general, for humans, if you can see the target clearly, unmistakably, and truly, you can pinpoint it. A character can freely attack a pinpointed target, or use spells or abilities on it that "target X targets / X targets within an area". A character can always pinpoint a position (such as "five meters in front of me, three meters up").

Approximate location: roughly knowing where the target is. This means the character knows the target's general direction but not its exact position. For humans, being unable to see someone but hearing continuous talking and noise close by may give an approximate location. A character can attack a target at an approximate location, but their successessuccesses成功数The number of dice showing 8 or higher in a roll., extra successesextra success附加成功Bonus successes from high Attributes, Skills, and other sources. They only add to a roll that already succeeded., and effect points all count only half, rounded down. A character can also choose a target at an approximate location as the target of a targeted spell, but the spell only has a half chance of working (however, if the spell's area says "area" or "each target within the area", it works as normal).

Can't locate: the character has no idea where the target is. For humans, this means they can't see or hear the enemy and have no data to analyze. A character can assume the target is at some position and attack it; if the target happens to be there, it counts as an approximate location. But the character can't make it the target of a spell (however, if the spell's area says "area" or "each target within the area", it works as normal).

Unless stated otherwise, characters based on humans can only pinpoint with sight.
A blinded character can't locate targets by sight. A deafened character can't locate targets by hearing.

Detection vs. anti-detection contestsopposed roll对抗A roll whose DC is the opponent's successes, like racing someone or shoving them aside.:
The contest has three stages:

Stage one: determine the anti-detecting side's anti-detection.
Usually, anti-detection means the detecting side can't detect the target; in plain terms, the anti-detecting side has gone "invisibleinvisibility隐形Unable to be seen.".
The means that makes it "invisible" is its means of anti-detection.
Stage one first determines whether the anti-detecting side has a means of anti-detection.
That is, if no target in the same environment has any anti-detection, everyone is exposed to everyone else's view, and there is no need for the detection contest rules.
If a character does have anti-detection, determine its Essence and Rank, then move on to stage two.

Stage two: determine the detecting side's detection.
In this stage, list all of the detecting side's means of detection.
Then compare all of them with the target's anti-detection. The result decides whether to go on to stage three.
When the detecting side's detection is a higher Rank than the anti-detection, the anti-detecting side is pinpointed by the detecting side at once.
When the detecting side's detection is the same Rank as the anti-detection, the anti-detecting side is approximately located by the detecting side at once.
When the detecting side's detection is a lower Rank than the anti-detection, the anti-detecting side gets the benefit of its anti-detection, and the detecting side can't locate it.

In this stage, if the detecting side hasn't pinpointed the anti-detecting side, go on to stage three.

Stage three: a contest of Skills
Now, once per roundround轮The time in which everyone in a fight acts once., the detecting side starts a contest.

The detecting side makes a PERPerception感知Noticing your surroundings, spotting changes, and picking out details quickly; also insight and intuition. Abbreviated PER in checks. + InvestigationInvestigation调查Spotting clues and details others miss. (Spotting) rollroll检定Rolling your dice pool of d10s; each die showing 8 or higher is a success. Written like 'a Dexterity + Stealth roll'., opposed by the anti-detecting side's DEXDexterity敏捷Agility, coordination, and physical reflexes. Abbreviated DEX in checks. + StealthStealth隐藏Hiding and moving unseen. (Hiding) roll.
If the detecting side wins: if it already had an approximate location on the anti-detecting side in stage two, it can now pinpoint it. If it couldn't locate it in stage two, it now has an approximate location.
Note that both sides' rolls are affected by the following, and these bonusesbonus加值A modifier that adds to a pool or value. Bonuses of the same type usually don't stack; use the highest. and penaltiespenalty减值A modifier that subtracts from a pool or value. all stack:

While the anti-detecting side can't be located, it is "invisible", so all its Stealth rolls gain a 10 DP circumstance bonuscircumstance bonus环境加值A bonus from the surroundings or situation..
If the surroundings are noisy, the detecting side takes a 2 DP circumstance penalty. (If the detecting side has no hearing, this penalty doesn't apply.)
If the anti-detecting side attacked, cast a spell, or did something similar last turnturn回合One character's moment to act within a round., the detecting side gains a 2 DP circumstance bonus. (If the detecting side has no hearing, this bonus doesn't apply.)
If the anti-detecting side made a sound (such as speaking) last turn, the detecting side gains a 2 DP circumstance bonus. (If the detecting side has no hearing, this bonus doesn't apply.)
If the anti-detecting side gives off an unusual smell, the detecting side gains a 2 DP circumstance bonus. (If the detecting side has no sense of smell, this bonus doesn't apply.)
If the anti-detecting side moved more than half its speed last turn, the detecting side gains a 2 DP circumstance bonus.
If the anti-detecting side is within the detecting side's approximate range, the detecting side gains a 1 DP circumstance bonus.
If the anti-detecting side is within the detecting side's sensory rangesensory range敏感范围How far around them a character can notice things., the detecting side gains a 1 DP circumstance bonus.

Special: an ordinary person's naked eye has Natural EssenceNatural Essence自然本质The Essence of things that exist naturally in the real world. detection at the UnrankedUnranked无支线The lowest power grade, below D-Rank. Talents, flaws, and basic combat effects count as Unranked. level.