Add events manager and mouse keyboard clients.

This commit is contained in:
Roz K 2022-12-29 08:13:53 +01:00
parent 1ac12ea9ea
commit 850a254abc
Signed by: roz
GPG Key ID: 51FBF4E483E1C822
3 changed files with 133 additions and 0 deletions

54
game/events.py Normal file
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# Copyright (C) 2022 RozK
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from engine import (
buffer,
EVENT_FOCUS_IN, EVENT_FOCUS_OUT,
EVENT_KEY_PRESS, EVENT_KEY_RELEASE,
EVENT_BUTTON_PRESS, EVENT_BUTTON_RELEASE,
EVENT_MOTION,
Event, create_events, destroy_events, consume_events)
_max_type = max(
EVENT_FOCUS_IN, EVENT_FOCUS_OUT,
EVENT_KEY_PRESS, EVENT_KEY_RELEASE,
EVENT_BUTTON_PRESS, EVENT_BUTTON_RELEASE,
EVENT_MOTION)
_max_events = 64
class Events:
__slots__ = '_display', '_events', '_buffer', '_handlers'
def __init__(self, display):
self._display = display
self._events = create_events(display)
self._buffer = buffer(Event, _max_events)
self._handlers = [[] for _ in range(_max_type + 1)]
def __del__(self):
destroy_events(self._display, self._events)
def register(self, type, handler):
assert type <= _max_type
self._handlers[type].append(handler)
def update(self):
nevents = consume_events(self._events, self._buffer, _max_events)
if nevents:
for event in self._buffer[:nevents]:
data = event.data
for handler in self._handlers[event.type]:
handler(data)

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game/keyboard.py Normal file
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# Copyright (C) 2022 RozK
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from engine import EVENT_KEY_PRESS
class Keyboard:
__slots__ = 'quit'
def __init__(self, events):
self.quit = False
events.register(EVENT_KEY_PRESS, self.key_press_handler)
def key_press_handler(self, data):
if data.key.character == 'q':
self.quit = True

52
game/mouse.py Normal file
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# Copyright (C) 2022 RozK
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from engine import (
EVENT_BUTTON_PRESS, EVENT_BUTTON_RELEASE, EVENT_MOTION, BUTTON_LEFT, BUTTON_WHEEL_UP, BUTTON_WHEEL_DOWN)
class Mouse:
__slots__ = 'buttons', 'wheel', 'wheel_min', 'position', 'drag'
def __init__(self, events, wheel = 0, wheel_min = None):
self.buttons = 0
self.wheel = wheel
self.wheel_min = wheel_min
self.position = None
self.drag = (0, 0)
events.register(EVENT_BUTTON_PRESS, self.button_press_handler)
events.register(EVENT_BUTTON_RELEASE, self.button_release_handler)
events.register(EVENT_MOTION, self.motion_handler)
def button_press_handler(self, data):
button = data.button.index
self.buttons |= 1 << button
if button == BUTTON_WHEEL_UP:
self.wheel -= 1
if self.wheel_min is not None and self.wheel < self.wheel_min:
self.wheel = self.wheel_min
elif button == BUTTON_WHEEL_DOWN:
self.wheel += 1
def button_release_handler(self, data):
self.buttons &= ~(1 << data.button.index)
def motion_handler(self, data):
new_x = data.motion.x
new_y = data.motion.y
if self.position and (self.buttons & (1 << BUTTON_LEFT)):
prev_x, prev_y = self.position
prev_dx, prev_dy = self.drag
self.drag = (prev_dx + (new_x - prev_x), prev_dy + (new_y - prev_y))
self.position = (new_x, new_y)