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annotate pytouhou/game/item.py @ 186:84da28ae7ee4

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Parse command line with argparse.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Wed, 26 Oct 2011 15:03:50 -0700
parents ebfd328e700c
children e1bc8c4cbb1a
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1 # -*- encoding: utf-8 -*-
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2 ##
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3 ## Copyright (C) 2011 Thibaut Girka <thib@sitedethib.com>
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4 ##
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5 ## This program is free software; you can redistribute it and/or modify
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6 ## it under the terms of the GNU General Public License as published
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7 ## by the Free Software Foundation; version 3 only.
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8 ##
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9 ## This program is distributed in the hope that it will be useful,
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10 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 ## GNU General Public License for more details.
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13 ##
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14
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15
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16 from math import cos, sin, atan2, pi
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17
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18 from pytouhou.utils.interpolator import Interpolator
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19
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20
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21 class Item(object):
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22 def __init__(self, start_pos, item_type, game, angle=pi/2, speed=8., player=None, end_pos=None):
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23 self._game = game
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24 self._sprite = item_type.sprite
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25 self._removed = False
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26 self._item_type = item_type
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28 self.hitbox_half_size = item_type.hitbox_size / 2.
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29
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30 self.frame = 0
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31
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32 self.player = player
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33
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34 self.x, self.y = start_pos
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35 self.angle = angle
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36 self.speed = speed
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37 dx, dy = cos(angle) * speed, sin(angle) * speed
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38 self.delta = dx, dy
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39
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40 if not player:
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41 #TODO: find the formulae in the binary.
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42 self.speed_interpolator = None
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43 if end_pos:
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44 self.pos_interpolator = Interpolator(start_pos, 0,
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45 end_pos, 60)
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46 else:
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47 self.speed_interpolator = Interpolator((-2.,), 0,
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48 (0.,), 60)
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49
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50 self._sprite.angle = angle
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52
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53 def update(self):
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54 dx, dy = self.delta
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56 if self.frame == 60:
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57 self.speed_interpolator = Interpolator((0.,), 60,
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58 (3.,), 180)
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60 if self.player is not None:
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61 self.angle = atan2(self.player.y - self.y, self.player.x - self.x)
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62 self.x += cos(self.angle) * self.speed
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63 self.y += sin(self.angle) * self.speed
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64 elif self.speed_interpolator is None:
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65 self.pos_interpolator.update(self.frame)
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66 self.x, self.y = self.pos_interpolator.values
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67 else:
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68 self.speed_interpolator.update(self.frame)
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69 self.speed, = self.speed_interpolator.values
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70 dx, dy = cos(self.angle) * self.speed, sin(self.angle) * self.speed
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71 self.delta = dx, dy
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72 self.x += dx
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73 self.y += dy
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75 self.frame += 1
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76