trigger · `is_demilitarized_zone`

Definition

Supported scope:STATE
Supported target:any

Description

checks if a state is a demilitarized zone

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

is_demilitarized_zone 常用于占领、外交或和平条约类 mod 中，检测某州是否处于非军事化状态，从而决定是否允许驻军、建造军事设施或触发特定事件。例如，当一个州被非军事化后，可以限制该州的某些玩家行为或触发对应的 AI 逻辑。

# 在某个决策的 available 块中，限制仅非军事化州可激活
available = {
    ROOT = {
        is_demilitarized_zone = yes
    }
}

配合关系

[set_demilitarized_zone](/wiki/effect/set_demilitarized_zone)：最直接的配套 effect，用于将一个州设为或取消非军事化状态，与本 trigger 形成"设置-检测"闭环。
[has_state_flag](/wiki/trigger/has_state_flag)：非军事化往往伴随自定义 flag 标记特殊协议或条约，两者结合可实现更精确的条件判断。
[is_controlled_by](/wiki/trigger/is_controlled_by)：非军事化区域通常涉及控制权问题，配合使用可区分"被敌方控制的非军事区"与"正常非军事区"两种情形。
[building_count_trigger](/wiki/trigger/building_count_trigger)：可用于验证非军事化约束是否被遵守——若州内仍存在军事建筑则触发违约逻辑。

常见坑

Scope 混用错误：该 trigger 必须在 STATE scope 下调用，若写在 COUNTRY scope 的条件块中（如直接放在国家事件的 trigger 块顶层）会静默失败或报错，需先用 any_state / capital_scope 等切换到 STATE scope。
与非军事化 modifier 混淆：新手常误以为手动用 add_state_modifier 添加了某个"非军事化"效果后本 trigger 就会返回 yes，实际上只有通过 set_demilitarized_zone = yes 设置的内置标志才能被此 trigger 正确识别。

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

is_demilitarized_zone is commonly used in occupation, diplomacy, or peace treaty mods to detect whether a state is demilitarized, allowing you to decide whether to permit garrison, military construction, or trigger specific events. For example, once a state is demilitarized, you can restrict certain player actions in that state or trigger corresponding AI logic.

# In the available block of a decision, restrict activation to demilitarized zones only
available = {
    ROOT = {
        is_demilitarized_zone = yes
    }
}

Synergy

[set_demilitarized_zone](/wiki/effect/set_demilitarized_zone): The most direct complementary effect, used to set or unset a state's demilitarized status, forming a "set-check" loop with this trigger.
[has_state_flag](/wiki/trigger/has_state_flag): Demilitarization is often accompanied by custom flags marking special agreements or treaties; using both together enables more precise conditional logic.
[is_controlled_by](/wiki/trigger/is_controlled_by): Demilitarized zones typically involve control issues; combined use distinguishes between "enemy-controlled demilitarized zone" and "normal demilitarized zone" scenarios.
[building_count_trigger](/wiki/trigger/building_count_trigger): Can be used to verify whether demilitarization constraints are being respected—if military buildings still exist in the state, it triggers breach logic.

Common Pitfalls

Scope Mismatch Errors: This trigger must be called within STATE scope; placing it in a COUNTRY scope condition block (such as directly in a country event's trigger block) will silently fail or error. You must first switch to STATE scope using any_state / capital_scope or similar.
Confusion with Demilitarization Modifiers: Beginners often mistakenly believe that manually adding a "demilitarized" effect via add_state_modifier will make this trigger return yes; in reality, only the built-in flag set through set_demilitarized_zone = yes is correctly recognized by this trigger.

trigger · is_demilitarized_zone