> For the complete documentation index, see [llms.txt](https://docs.flatredball.com/flatredball/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.flatredball.com/flatredball/tutorials/platformer-plugin/ground-type-and-water-movement.md). # Ground Type and Water Movement This set of tutorials covers how to change a Player's movement values in response to colliding with various ground types (such as ice). It also covers how to implement swimming, and how to transition between in and out of water movement. Multiple terrain types and water movement are common in many platformers such as Super Mario World. {% embed url="" %} This tutorial begins with an empty project and will create a Player which changes its movement values according to collision with different ShapeCollections. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## 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/tutorials/platformer-plugin/ground-type-and-water-movement.md?ask= ``` 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.