Always use keywords in structural pattern matching.

The docs were erroneously using positional arguments, but this is not
supported by the current classes.

Related to #120.

Author: HexDecimal

tcod/event.py

@@ -68,11 +68,11 @@
                     raise SystemExit()
                 case tcod.event.KeyDown(sym) if sym in KEY_COMMANDS:
                     print(f"Command: {KEY_COMMANDS[sym]}")
-                case tcod.event.KeyDown(sym, scancode, mod, repeat):
+                case tcod.event.KeyDown(sym=sym, scancode=scancode, mod=mod, repeat=repeat):
                     print(f"KeyDown: {sym=}, {scancode=}, {mod=}, {repeat=}")
-                case tcod.event.MouseButtonDown(button, pixel, tile):
+                case tcod.event.MouseButtonDown(button=button, pixel=pixel, tile=tile):
                     print(f"MouseButtonDown: {button=}, {pixel=}, {tile=}")
-                case tcod.event.MouseMotion(pixel, pixel_motion, tile, tile_motion):
+                case tcod.event.MouseMotion(pixel=pixel, pixel_motion=pixel_motion, tile=tile, tile_motion=tile_motion):
                     print(f"MouseMotion: {pixel=}, {pixel_motion=}, {tile=}, {tile_motion=}")
                 case tcod.event.Event() as event:
                     print(event)  # Show any unhandled events.

tcod/sdl/mouse.py

@@ -151,12 +151,12 @@ def capture(enable: bool) -> None:
         # This means that dragging the mouse outside of the window will not cause an interruption in motion events.
         for event in tcod.event.get():
             match event:
-                case tcod.event.MouseButtonDown(button, pixel):  # Clicking the window captures the mouse.
+                case tcod.event.MouseButtonDown(button=button, pixel=pixel):  # Clicking the window captures the mouse.
                     tcod.sdl.mouse.capture(True)
                 case tcod.event.MouseButtonUp():  # When all buttons are released then the mouse is released.
                     if tcod.event.mouse.get_global_state().state == 0:
                         tcod.sdl.mouse.capture(False)
-                case tcod.event.MouseMotion(pixel, pixel_motion, state):
+                case tcod.event.MouseMotion(pixel=pixel, pixel_motion=pixel_motion, state=state):
                     pass  # While a button is held this event is still captured outside of the window.
 
     .. seealso::