# CollideAgainstMove

### Introduction

The CollideAgainstMove method performs the following:

* Returns true if a collision has occurred.
* Repositions the calling Circle and/or the argument object depending on the argument masses.

**Note:** All collision methods, including CollideAgainstMove, are common to all Shapes. If you came here through a link on a page beside the Circle (such as Polygon), don't worry, the code for all shapes is identical.


---

# 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://docs.flatredball.com/flatredball/api/flatredball/math/geometry/circle/collideagainstmove.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.
