Entity Documentation - minecraft:rail_sensor

2025-02-26

Rail Sensor Properties

Name	Default Value	Type	Description	Example Values
check_block_types	false	Boolean true/false	If true, on tick this entity will trigger its on_deactivate behavior	Command Block Minecart: `true`
eject_on_activate	true	Boolean true/false	If true, this entity will eject all of its riders when it passes over an activated rail	Minecart: `true`
eject_on_deactivate	false	Boolean true/false	If true, this entity will eject all of its riders when it passes over a deactivated rail
on_activate	not set	Minecraft Event Trigger	Event to call when the rail is activated	Command Block Minecart: `{"event":"minecraft:command_block_activate"}`, Hopper Minecart: `{"event":"minecraft:hopper_deactivate"}`, Tnt Minecart: `{"filters":{"all_of":[{"test":"is_game_rule","domain":"tntexplodes","operator":"==","value":true}]},"event":"minecraft:on_prime"}`
on_deactivate	not set	Minecraft Event Trigger	Event to call when the rail is deactivated	Command Block Minecart: `{"event":"minecraft:command_block_deactivate"}`, Hopper Minecart: `{"event":"minecraft:hopper_activate"}`
tick_command_block_on_activate	true	Boolean true/false	If true, command blocks will start ticking when passing over an activated rail	Command Block Minecart: `true`
tick_command_block_on_deactivate	false	Boolean true/false	If false, command blocks will stop ticking when passing over a deactivated rail

Samples

Command Block Minecart

At /minecraft:entity/component_groups/minecraft:command_block_active/minecraft:rail_sensor/:

"minecraft:rail_sensor": {
  "check_block_types": true,
  "eject_on_activate": false,
  "eject_on_deactivate": false,
  "tick_command_block_on_activate": true,
  "tick_command_block_on_deactivate": false,
  "on_deactivate": {
    "event": "minecraft:command_block_deactivate"
  }
}

At /minecraft:entity/component_groups/minecraft:command_block_inactive/minecraft:rail_sensor/:

"minecraft:rail_sensor": {
  "check_block_types": false,
  "eject_on_activate": false,
  "eject_on_deactivate": false,
  "tick_command_block_on_activate": true,
  "tick_command_block_on_deactivate": false,
  "on_activate": {
    "event": "minecraft:command_block_activate"
  }
}

Hopper Minecart

At /minecraft:entity/component_groups/minecraft:hopper_active/minecraft:rail_sensor/:

"minecraft:rail_sensor": {
  "on_activate": {
    "event": "minecraft:hopper_deactivate"
  }
}

At /minecraft:entity/component_groups/minecraft:hopper_inactive/minecraft:rail_sensor/:

"minecraft:rail_sensor": {
  "on_deactivate": {
    "event": "minecraft:hopper_activate"
  }
}

Minecart

"minecraft:rail_sensor": {
  "eject_on_activate": true
}

Tnt Minecart

At /minecraft:entity/component_groups/minecraft:primed_tnt/minecraft:rail_sensor/:

"minecraft:rail_sensor": {}

At /minecraft:entity/component_groups/minecraft:inactive/minecraft:rail_sensor/:

"minecraft:rail_sensor": {
  "on_activate": {
    "filters": {
      "all_of": [
        {
          "test": "is_game_rule",
          "domain": "tntexplodes",
          "operator": "==",
          "value": true
        }
      ]
    },
    "event": "minecraft:on_prime"
  }
}

通过