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# -*- coding: utf-8 -*-
# characters.py - module for shared functions and macros
# This file is part of brutalmaze
#
# brutalmaze is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# brutalmaze 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with brutalmaze. If not, see <http://www.gnu.org/licenses/>.
#
# Copyright (C) 2017 Nguyễn Gia Phong
__doc__ = 'brutalmaze module for hero and enemy classes'
from functools import reduce
from math import cos, sin, pi
from operator import or_
from random import uniform
import pygame
from pygame.gfxdraw import filled_polygon, aapolygon
from .constants import MIDDLE
def some(a, keys):
"""Return True if there is a key k in keys that bool(a[k]) is True."""
return bool(reduce(or_, (a[k] for k in keys)))
def round2(number):
"""Round a number to an int."""
return int(round(number))
def randsign():
"""Return either -1 or 1 (kind of) randomly."""
return (pygame.time.get_ticks() & 1)*2 - 1
def regpoly(n, R, r, x, y):
"""Return the pointlist of the regular polygon with n sides,
circumradius of R, the center point I(x, y) and one point A make the
vector IA with angle r (in radians).
"""
r %= pi * 2
angles = [r + pi*2*side/n for side in range(n)]
return [(x + R*cos(angle), y + R*sin(angle)) for angle in angles]
def fill_aapolygon(surface, points, color):
"""Draw a filled polygon with anti aliased edges onto a surface."""
aapolygon(surface, points, color)
filled_polygon(surface, points, color)
def sign(n):
"""Return the sign of number n."""
return -1 if n < 0 else 1 if n else 0
def cosin(x):
"""Return the sum of cosine and sine of x (measured in radians)."""
return cos(x) + sin(x)
def choices(d):
"""Choose a random key from a dict which has values being relative
weights of the coresponding keys.
"""
population, weights = tuple(d.keys()), tuple(d.values())
cum_weights = [weights[0]]
for weight in weights[1:]: cum_weights.append(cum_weights[-1] + weight)
num = uniform(0, cum_weights[-1])
for i, w in enumerate(cum_weights):
if num <= w: return population[i]
def play(sound, volume):
"""Play a pygame.mixer.Sound at the given volume."""
sound.set_volume(volume)
sound.play()
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