72 lines
2.4 KiB
Python
72 lines
2.4 KiB
Python
# This file is part of A Robot's Conundrum.
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#
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# A Robot's Conundrum is free software: you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the Free
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# Software Foundation, either version 3 of the License, or (at your option) any
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# later version.
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#
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# A Robot's Conundrum is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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# details.
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#
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# You should have received a copy of the GNU General Public License along with
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# A Robot's Conundrum. If not, see <http://www.gnu.org/licenses/>.
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#
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# ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' '
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#
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# fadeout.py
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# --------------------
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# date created : Thu Aug 9 2012
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# copyright : (C) 2012 Niels G. W. Serup
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# maintained by : Niels G. W. Serup <ngws@metanohi.name>
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"""
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Fade out and in.
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"""
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import os
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import pygame
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class Fadeout(object):
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def __init__(self, game, function, duration=500):
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self.__dict__.update(locals())
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self.game.objs.append(self)
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self.img = pygame.Surface(self.game.window.get_size())
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self._start_time = pygame.time.get_ticks()
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self._middle_time = self._start_time + duration
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self._end_time = self._middle_time + duration
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self.img.set_alpha(0)
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self.img.fill((0, 0, 0))
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self._has_run = False
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def update(self, e, t, dt):
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if t < self._middle_time:
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self.img.set_alpha(255 * (t - self._start_time) / self.duration)
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else:
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if not self._has_run:
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self.function()
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self._has_run = True
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if t < self._end_time:
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self.img.set_alpha(255 * (self.duration - (t - self._middle_time)) / self.duration)
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else:
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self.game.objs.remove(self)
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self.update = lambda *xs: None
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def draw(self, window):
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window.blit(self.img, (0, 0))
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class Darkness(Fadeout):
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def __init__(self, game, darkness):
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self.__dict__.update(locals())
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self.set_darkness(darkness)
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def set_darkness(self, darkness):
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self.darkness = darkness
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self.img = pygame.Surface(self.game.window.get_size())
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self.img.set_alpha(int(darkness * 255))
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self.img.fill((0, 0, 0))
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def update(self, *xs):
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pass
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