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33 lines
947 B
Markdown
33 lines
947 B
Markdown
# Hierarchical Finite State Machine
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This example shows how to apply the State machine programming
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pattern in GDscript, including Hierarchical States, and a
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pushdown automaton.
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Language: GDScript
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Renderer: GLES 2
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Check out this demo on the asset library: https://godotengine.org/asset-library/asset/516
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## Why use a state machine
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States are common in games. You can use the pattern to:
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1. Separate each behavior and transitions between behaviors,
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thus make scripts shorter and easier to manage.
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2. Respect the Single Responsibility Principle.
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Each State object represents one action.
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3. Improve your code's structure. Look at the scene tree and
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FileSystem tab: without looking at the code, you'll know
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what the Player can or cannot do.
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You can read more about States in the excellent
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[Game Programming Patterns ebook](https://gameprogrammingpatterns.com/state.html).
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## Screenshots
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