63 lines
2.2 KiB
Python
63 lines
2.2 KiB
Python
# -*- coding: utf-8 -*-
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# characters.py - module for weapon classes
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# This file is part of brutalmaze
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#
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# brutalmaze is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# brutalmaze is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with brutalmaze. If not, see <http://www.gnu.org/licenses/>.
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#
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# Copyright (C) 2017 Nguyễn Gia Phong
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__doc__ = 'brutalmaze module for weapon classes'
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from math import cos, sin
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from pygame.time import get_ticks
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from .constants import BULLET_LIFETIME, BULLET_SPEED
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from .utils import regpoly, fill_aapolygon
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class Bullet:
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"""Object representing a bullet.
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Attributes:
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surface (pygame.Surface): the display to draw on
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x, y (int): coordinates of the center of the bullet (in pixels)
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angle (float): angle of the direction the bullet pointing (in radians)
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color (pygame.Color): color of the bullet
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fall_time (int): the tick that the bullet will fall down
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"""
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def __init__(self, surface, x, y, angle, color):
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self.surface = surface
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self.x, self.y, self.angle, self.color = x, y, angle, color
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self.fall_time = get_ticks() + BULLET_LIFETIME
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def update(self, fps, distance):
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"""Update the bullet."""
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s = distance * BULLET_SPEED / fps
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self.x += s * cos(self.angle)
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self.y += s * sin(self.angle)
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hexagon = regpoly(5, distance // 4, self.angle, self.x, self.y)
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fill_aapolygon(self.surface, hexagon, self.color)
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def place(self, x, y):
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"""Move the bullet by (x, y) (in pixels)."""
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self.x += x
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self.y += y
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def length(self, x, y):
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"""Return the length of the line segment joining the center of
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the bullet and the point (x, y).
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"""
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return ((self.x-x)**2 + (self.y-y)**2)**0.5
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