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docs/wiki/3-实体/2-巧思案例/invulnerable-entities.md

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+---
+title: Invulnerable Entities
+category: Tutorials
+tags:
+    - beginner
+mentions:
+    - SirLich
+    - Joelant05
+    - solvedDev
+    - MedicalJewel105
+---
+
+## Using Damage Sensor
+
+The best and most flexible way of disabling damage for entities is using the `minecraft:damage_sensor` component. The component allows us to use `filters` to determine which damage sources can damage our entity.
+
+The best way to learn about this component is by using the vanilla examples for damage sensor or reading [documentation](https://bedrock.dev/docs/stable/Entities#minecraft:damage_sensor)
+
+### Completely Invulnerable Entity
+
+<CodeHeader>BP/entities/entity.json#minecraft:entity/components</CodeHeader>
+
+```json
+"minecraft:damage_sensor": {
+    "triggers": {
+        "cause": "all",
+        "deals_damage": false
+    }
+}
+```
+
+### Disable Damage from Player
+
+<CodeHeader>BP/entities/entity.json#minecraft:entity/components</CodeHeader>
+
+```json
+"minecraft:damage_sensor": {
+    "triggers": {
+        "on_damage": {
+            "filters": {
+                "test": "is_family",
+                "subject": "other",
+                "value": "player"
+            }
+        },
+        "deals_damage": false
+    }
+}
+```
+
+## Min Health
+
+The `min` property in the `minecraft:health` component allows us to make invincible entities that cannot die. This includes when using `/kill @e`. This is not considered a good solution because entities like this are hard to get rid of.
+
+If you choose to use this component, please make sure you have another method for killing the entity. Triggering `minecraft:instant_despawn` from something like an environment sensor, a timer, or an interact is a good solution. You also can call it using `/event`.
+
+<CodeHeader>BP/entities/entity.json#minecraft:entity/components</CodeHeader>
+
+```json
+"minecraft:health": {
+    "value": 1,
+    "max": 1,
+    "min": 1
+}
+```
+
+Note that setting it to 0 breaks some death and spawn animations/effects.