Mercurial > fife-parpg

annotate demos/shooter/scripts/common/helpers.py @ 451:f463ab431cc0

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Movement shouldn't be dependent on framerate anymore. Some minor tweaks.
author prock@33b003aa-7bff-0310-803a-e67f0ece8222
date Thu, 01 Apr 2010 21:14:23 +0000
parents 2046a1f2f5f2
children 3164715a0621
rev   line source
446
2046a1f2f5f2 Adding the shooter demo. This is still a work in progress.
prock@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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1 # -*- coding: utf-8 -*-
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2
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3 # ####################################################################
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4 # Copyright (C) 2005-2009 by the FIFE team
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5 # http://www.fifengine.de
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6 # This file is part of FIFE.
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7 #
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8 # FIFE is free software; you can redistribute it and/or
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prock@33b003aa-7bff-0310-803a-e67f0ece8222
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9 # modify it under the terms of the GNU Lesser General Public
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10 # License as published by the Free Software Foundation; either
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11 # version 2.1 of the License, or (at your option) any later version.
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12 #
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13 # This library is distributed in the hope that it will be useful,
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14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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prock@33b003aa-7bff-0310-803a-e67f0ece8222
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16 # Lesser General Public License for more details.
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17 #
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18 # You should have received a copy of the GNU Lesser General Public
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19 # License along with this library; if not, write to the
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prock@33b003aa-7bff-0310-803a-e67f0ece8222
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20 # Free Software Foundation, Inc.,
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21 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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22 # ####################################################################
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23
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24 from fife import fife
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25
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26
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prock@33b003aa-7bff-0310-803a-e67f0ece8222
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27 def normalize(vector):
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28 """
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29 Helper function to normalize a vector
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30 """
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31 norm = fife.DoublePoint(0,0)
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32
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33 invLength = 1.0/vector.length()
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prock@33b003aa-7bff-0310-803a-e67f0ece8222
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34 if invLength > 1e-06:
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35 norm.x = vector.x * invLength;
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36 norm.y = vector.y * invLength;
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37 else:
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38 norm.x = 0
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39 norm.y = 0
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40
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41 return norm
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42
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prock@33b003aa-7bff-0310-803a-e67f0ece8222
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43 class Rect(object):
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44 def __init__(self, x = 0, y = 0, w = 0, h = 0):
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45 self._x = x
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46 self._y = y
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47 self._w = w
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48 self._h = h
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49
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50 def intersects(self, rect):
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51 _x = self._x - rect.x;
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52 _y = self._y - rect.y;
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53 _w = self._w;
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54 _h = self._h;
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55
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56 if _x < 0:
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57 _w += _x
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58 _x = 0
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59
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60 if _y < 0:
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61 _h += _y
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62 _y = 0
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63
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64 if _x + _w > rect.w:
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65 _w = rect.w - _x
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66
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67 if _y + _h > rect.h:
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68 _h = rect.h - _y
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69
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70 if _w <= 0 or _h <= 0:
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71 return False
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72
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73 return True
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74
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75 def _setX(self, x):
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76 self._x = x
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77
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78 def _getX(self):
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79 return self._x
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80
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81 def _setY(self, y):
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82 self._y = y
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83
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84 def _getY(self):
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85 return self._y
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86
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87 def _setW(self, w):
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88 self._w = w
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89
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90 def _getW(self):
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91 return self._w
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92
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93 def _setH(self, h):
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94 self._h = h
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95
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96 def _getH(self):
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97 return self._h
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98
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99 x = property(_getX, _setX)
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100 y = property(_getY, _setY)
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101 w = property(_getW, _setW)
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102 h = property(_getH, _setH)