# Shell

A Shell object represents a shell-bomb, which emits a single or multiple particles which can carry further emitters f.e. [Stars](/depence-construction/firework/build-custom-effects/stars.md) or [Tails](/depence-construction/firework/build-custom-effects/tail.md). 

<table><thead><tr><th width="275">Property</th><th width="375">Description</th></tr></thead><tbody><tr><td>Firework Color</td><td>Pre-defined colors.</td></tr><tr><td>Custom Color</td><td>Once the Firework Color is set to Custom, a RGB defined color can be used.</td></tr><tr><td>Lifetime</td><td>Total lifetime in seconds.</td></tr><tr><td>Lifetime Random</td><td>Randomization of the Lifetime in %.</td></tr><tr><td>Enabled</td><td>Enabled the emitter.</td></tr><tr><td>Height</td><td>Maximum Height in meters.</td></tr><tr><td>Count</td><td>Amount of shells to emit.</td></tr><tr><td>Random Direction</td><td>Random direction on every shot.</td></tr><tr><td>Comet</td><td>Visible Comet particle.</td></tr><tr><td>Comet Size</td><td>Size (WS) of the Comet Particle.</td></tr><tr><td>MinPixelSize</td><td>Minimum Size of the particle in pixel.</td></tr><tr><td>Sound Energy</td><td>0..1 value for the sound engine to select different sounds depending on the energy.</td></tr><tr><td>Sound</td><td>On/Off.</td></tr><tr><td>Air Resistance</td><td>represents air resistance (a factor of the res. of a unit sphere at cw=1 and 1kg). <span data-gb-custom-inline data-tag="emoji" data-code="26a0">⚠️</span> too high resistance can cause the particle to not emit, because it would never reach the defined height!</td></tr><tr><td>Random Velocity</td><td>Randomization on the velocity in %.</td></tr><tr><td>Fade In</td><td>How long the particel fades in (% on lifetime).</td></tr><tr><td>Fade Out</td><td>How long the particle fades out (% on lifetime).</td></tr><tr><td>Blink Frequency</td><td>Blink/Strobe frequency in Hz.</td></tr><tr><td>Blink Amplitude</td><td>Blink/Strobe Amplitude in %.</td></tr></tbody></table>

All child objects will be carried by the shell and will be ignited.&#x20;


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://help3.depence.com/depence-construction/firework/build-custom-effects/shell.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.