# Turn Block ON-OFF

You can turn on and off blocks on interact.

{% tabs %}
{% tab title="Modern (Recommended)" %}
First create your block template. This is the base block that will be used to create the on and off blocks.

In this example I use built-in Minecraft models to avoid creating new models just for this example.

```yaml
info:
  namespace: test
items:
  my_light_block_template:
    name: Test Change State Block Interact
    template: true
    resource:
      generate: false
      model_path: minecraft:block/diamond_block
      material: PAPER
    behaviours:
      block:
        placed_model:
          type: REAL_NOTE
        cancel_drop: false
```

Now create the off block. This block has an event listener on interaction that replaces itself with the on block (that will be created next).

```yaml
  my_light_block_off:
    variant_of: my_light_block_template
    events:
      placed_block:
        interact:
          replace_block:
            from: my_light_block_off
            to: my_light_block_on
            decrement_durability: 0
```

<figure><img src="/files/g8RRbSY87wxaGWoWstIu" alt=""><figcaption></figcaption></figure>

Now create the on block. This block has an event listener on interaction that replaces itself with the off block (that we created before).

As you can see I specified the `light_level: 15` property, to turn the light on.

```yaml
  my_light_block_on:
    variant_of: my_light_block_template
    behaviours:
      block:
        placed_model:
          type: REAL_NOTE
        cancel_drop: false
        light_level: 15
    events:
      placed_block:
        interact:
          replace_block:
            from: my_light_block_on
            to: my_light_block_off
            decrement_durability: 0
```

<figure><img src="/files/CQ9UO7YcDVZjlEfcNtUc" alt=""><figcaption></figcaption></figure>
{% endtab %}

{% tab title="Old (ItemsAdder v3)" %}

```yaml
info:
  namespace: test
items:
  my_light_block_off:
    name: Test Change State Block Interact
    resource:
      generate: false
      model_path: minecraft:block/diamond_block
      material: PAPER
    behaviours:
      block:
        placed_model:
          type: REAL_NOTE
        cancel_drop: false
    events:
      placed_block:
        interact:
          replace_block:
            from: my_light_block_off
            to: my_light_block_on
            decrement_durability: 0
  my_light_block_on:
    name: Test Change State Block Interact ON
    resource:
      generate: false
      model_path: minecraft:block/emerald_block
      material: PAPER
    behaviours:
      block:
        placed_model:
          type: REAL_NOTE
        cancel_drop: false
        light_level: 15
    events:
      placed_block:
        interact:
          replace_block:
            from: my_light_block_on
            to: my_light_block_off
            decrement_durability: 0
```

{% endtab %}
{% endtabs %}


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