完整版BedrockWiki镜像！
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boybook
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---
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title: Entity Counter
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category: Scoreboard Systems
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title: 实体计数器
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category: 计分板系统
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mentions:
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- BedrockCommands
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- zheaEvyline
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nav_order: 3
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tags:
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- system
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- 系统
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---
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## Introduction
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# 实体计数器
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[Sourced By Bedrock Commands Community Discord](https://discord.gg/SYstTYx5G5)
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<!--@include: @/wiki/bedrock-wiki-mirror.md-->
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This system allows you to track how many players/entities are there on your world and run your desired commands based on the values obtained.
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## 前言
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> Note: you cannot track entities in unloaded chunks though players can still be tracked regardless.
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[源自Bedrock Commands社区Discord](https://discord.gg/SYstTYx5G5)
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## Setup
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本系统可用于追踪世界中玩家/实体的数量，并根据获取的数值执行自定义命令。
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*To be typed in Chat:*
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> 注意：无法追踪未加载区块中的实体，但玩家无论是否在加载区块中都可被追踪。
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## 初始化设置
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*在聊天栏输入:*
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`/scoreboard objectives add total dummy`
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If you prefer to have the objective added automatically on world initialisation, follow the process outlined in [On First World Load.](/commands/on-first-world-load)
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若希望在世界初始化时自动添加该计分项，请参照[首次世界加载](/wiki/commands/on-first-world-load)中的流程进行设置。
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## System
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## 核心系统
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<CodeHeader>BP/functions/entity_counter.mcfunction</CodeHeader>
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```yaml
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::: code-group
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```yaml [BP/functions/entity_counter.mcfunction]
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scoreboard players set onlinePlayers total 0
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execute as @e [type=player] run scoreboard players add onlinePlayers total 1
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#Your Commands Here (examples)
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execute if score onlinePlayers total matches 4.. run title @a actionbar Enough players to start game.
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execute if score onlinePlayers total matches ..3 run title @a actionbar Not enough players.
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# 在此处添加你的命令（示例）
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execute if score onlinePlayers total matches 4.. run title @a actionbar 玩家数量已满足游戏条件。
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execute if score onlinePlayers total matches ..3 run title @a actionbar 玩家数量不足。
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```
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:::
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本示例使用名为`onlinePlayers`的虚拟玩家分数，通过选择器`@e [type=player]`追踪当前在线玩家数量。您可以根据需求使用任意虚拟玩家名称和实体类型，例如`@e [type=creeper]`来追踪苦力怕数量。
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Here we have used a FakePlayer name `onlinePlayers` and targeting `@e [type=player]` to track how many players are currently on the world. However you may use any FakePlayer name and target any entity you might need. Such as `@e [type=creeper]`
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示例中使用的`/title`命令演示了两种条件判断：
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- a) 当玩家数≥4时触发 `4..`
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- b) 当玩家数≤3时触发 `..3`
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Similarly we're running a `/title` command as an example:
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- a) when there are 4 or more players `4..`
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- b) when there are 3 players or less `..3`
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您可根据实际需求修改这些条件。
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You can edit this as well to suit your need.
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## 系统原理
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## Explanation
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- 系统中的前两条命令将虚拟玩家分数（此处为`onlinePlayers`）重置为0，然后通过遍历每个已加载的目标实体（此处为`type=player`）来累计分数
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- The first two commands in the system sets the FakePlayer name's score to 0 (here `onlinePlayers`) and from each loaded entity we want to track (here `type=player`) it will add a score to the specified FakePlayer name (here `onlinePlayers`)
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通过获取的数值，我们可以使用`/execute if score`命令在满足特定条件时执行自定义操作：
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- **` n `** 精确匹配数值n
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- **` n.. `** 数值≥n时触发
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- **` ..n `** 数值≤n时触发
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- **` n1..n2 `** 数值在n1到n2区间时触发
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Now based on the values obtained we can use the `/execute if score` command to run our desired commands when certain values are met.
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- **` n `** any number n
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- **` n.. `** any number n and above
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- **` ..n `** any number n and below
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- **` n1..n2 `** any number n1 to any number n2.
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## 循环执行配置
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## Tick JSON
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若使用函数替代命令方块，需将`entity_counter`函数添加至`tick.json`以实现循环持续执行。通过在字符串后添加逗号分隔，可将多个文件添加至`tick.json`。更多信息请参考[函数文档](/wiki/commands/mcfunctions#tick-json)。
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If you are using functions instead of command blocks, the ` entity_counter ` function must be added to the ` tick.json ` in order to loop and run it continuously. Multiple files can be added to the ` tick.json ` by placing a comma after each string. Refer to [Functions](/commands/mcfunctions#tick-json) documentation for further info.
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<CodeHeader>BP/functions/tick.json</CodeHeader>
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```json
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::: code-group
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```json [BP/functions/tick.json]
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{
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"values": [
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"entity_counter"
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]
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}
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```
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:::
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If using functions, your pack folder structure will be be as follows:
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使用函数时，资源包文件夹结构如下所示：
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<FolderView
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:paths="[
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@@ -84,6 +90,6 @@ If using functions, your pack folder structure will be be as follows:
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]"
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></FolderView>
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> **Note:** the scoreboard names (in this case: 'total') may end up being used by other people. Appending ` _ ` and a set of randomly generated characters after would be a choice that reduces the probability of collisions. Similar technique can be employed for the ` .mcfunction ` filenames. Ex:
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> - ` total_0fe678 `
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> - ` entity_counter_0fe678.mcfunction `
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> **注意：** 计分项名称（本例中的'total'）可能被他人重复使用。建议在名称后追加`_`和随机字符组合来降低冲突概率，此方法同样适用于`.mcfunction`文件名。例如：
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> - `total_0fe678`
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> - `entity_counter_0fe678.mcfunction`
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