Refactor event classes into dataclasses

Removes tons of boilerplate

Improve docs by inheriting members in event subclasses

Fix classes being undocumented due to being missing from `__all__`

Begin to phase out `Event.type` attribute

Hide linter warnings for unmaintained EventDispatch

Author: HexDecimal

CHANGELOG.md

@@ -10,6 +10,18 @@ This project adheres to [Semantic Versioning](https://semver.org/) since version
 
 - `tcod.sdl.video.Window` now accepts an SDL WindowID.
 
+### Changed
+
+- Event classes are now more strict with attribute types
+- Event class initializers are keyword-only and no longer take a type parameter, with exceptions.
+  Generally event class initialization is an internal process.
+- `MouseButtonEvent` no longer a subclass of `MouseState`.
+
+### Deprecated
+
+- `Event.type` is deprecated except for special cases such as `ControllerDevice`, `WindowEvent`, etc.
+- `MouseButtonEvent.state` is deprecated, replaced by the existing `.button` attribute.
+
 ## [20.1.0] - 2026-02-25
 
 ### Added

docs/tcod/event.rst

@@ -3,6 +3,7 @@ SDL Event Handling ``tcod.event``
 
 .. automodule:: tcod.event
     :members:
+    :inherited-members: object, int, str, tuple, Event
     :member-order: bysource
     :exclude-members:
         KeySym, Scancode, Modifier, get, wait

pyproject.toml

@@ -28,6 +28,7 @@ license-files = [
     "libtcod/LIBTCOD-CREDITS.txt",
 ]
 dependencies = [
+    "attrs>=25.2.0",
     "cffi>=1.15",
     'numpy>=1.21.4; implementation_name != "pypy"',
     "typing_extensions>=4.12.2",