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---
title: "Message"
date: 2019-05-22T13:10:43-07:00
weight: 7
---
Similar to Components, Messages are collections of data.
Messages are used to transmit data between Engines so they can manipulate the game state accordingly.
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To define a message, declare a struct.
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```cs
using Encompass;
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public struct MotionMessage {
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public Vector2 Motion { get; }
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}
```
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Messages are temporary and Encompass destroys all its references to them at the end of the frame.
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{{% notice tip %}}
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Again, because structs are value types, and Encompass stores them in a particular way, we can create as many of them as we want without worrying about creating pressure on the garbage collector. Neato!
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{{% /notice %}}
