trigger · `and`

Definition

Supported scope:any
Supported target:THIS, ROOT, PREV, FROM, OWNER, CONTROLLER, OCCUPIED, CAPITAL

Description

all inside trigger must be true

实战 · 配合 · 坑

实战内容由 AI 生成,并已对照 vanilla 命令词表校验 —— 请当作起点而非权威依据。上方的定义节才是游戏自带文档原文。

实战用法

and 是最基础的逻辑组合器，用于要求多个条件同时成立，例如在国家事件的 trigger 块中限定"必须是民主国家且处于战争状态"，或在 focus 的 available 里叠加多项前置要求。在大型 mod 中常用它将若干子条件显式分组，提高脚本可读性。

focus = {
    id = my_focus
    available = {
        and = {
            is_historical_focus_on = no
            country_exists = USA
            not = { has_global_flag = ww2_started }
        }
    }
}

配合关系

[not](/wiki/trigger/not) — 与 and 嵌套使用，实现"所有条件均满足，且某条件不成立"的复合逻辑。
[or](/wiki/trigger/or) — 常作为 and 的子块，在整体"全部为真"要求中允许其中某组条件满足其一。
[custom_trigger_tooltip](/wiki/trigger/custom_trigger_tooltip) — 包裹 and 块以自定义 tooltip 显示文本，避免界面将多个条件罗列得过于冗长。
[count_triggers](/wiki/trigger/count_triggers) — 作为 and 的兄弟或子条件，统计满足数量后再与其余强制条件并列使用。

常见坑

省略 and 导致误解逻辑层级：HOI4 的 trigger 块顶层默认即为隐式 and，但在 or / not 内部若想再做"全部成立"的子组合，必须显式写出 and = { ... }，否则结构会被解析错误。
在 and 内混写 effect 命令：and 是纯判断块，不能将 set_variable、if（effect 版）等改变游戏状态的命令写进去；应将逻辑判断与状态修改分别放在 trigger 和 effect 块中。

Hands-On Notes

Hands-on notes are AI-generated and checked against the vanilla command vocabulary — treat them as a starting point, not authoritative reference. The definition above is the game's own documentation.

Hands-On Usage

and is the most fundamental logical combinator, used to require multiple conditions to be true simultaneously. For example, in a country event's trigger block to restrict "must be a democratic nation and at war," or in a focus's available to stack multiple prerequisites. In large mods, it is commonly used to explicitly group sub-conditions and improve script readability.

focus = {
    id = my_focus
    available = {
        and = {
            is_historical_focus_on = no
            country_exists = USA
            not = { has_global_flag = ww2_started }
        }
    }
}

Synergy

[not](/wiki/trigger/not) — Nested with and to implement composite logic of "all conditions satisfied AND a certain condition does not hold."
[or](/wiki/trigger/or) — Commonly used as a sub-block of and, allowing one condition from a group to be satisfied within an overall "all true" requirement.
[custom_trigger_tooltip](/wiki/trigger/custom_trigger_tooltip) — Wraps an and block to customize tooltip display text and avoid the interface listing multiple conditions excessively.
[count_triggers](/wiki/trigger/count_triggers) — Used as a sibling or sub-condition of and to count satisfied conditions before combining with other mandatory conditions.

Common Pitfalls

Omitting and causes confusion in logic hierarchy: The top level of HOI4's trigger block implicitly functions as and by default, but within or / not, if you want to create a sub-combination of "all conditions must be true," you must explicitly write and = { ... }. Otherwise, the structure will be parsed incorrectly.
Mixing effect commands inside and: and is a pure judgment block and cannot contain commands that modify game state like set_variable, if (effect version), etc. Logic judgments and state modifications should be placed in separate trigger and effect blocks respectively.

trigger · and