Mercurial > fife-parpg

comparison demos/shooter/scripts/common/helpers.py @ 446:2046a1f2f5f2

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Adding the shooter demo. This is still a work in progress.
author prock@33b003aa-7bff-0310-803a-e67f0ece8222
date Wed, 31 Mar 2010 15:40:00 +0000
parents
children 3164715a0621
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445:f855809822cf 446:2046a1f2f5f2
1 # -*- coding: utf-8 -*-
2
3 # ####################################################################
4 # Copyright (C) 2005-2009 by the FIFE team
5 # http://www.fifengine.de
6 # This file is part of FIFE.
7 #
8 # FIFE is free software; you can redistribute it and/or
9 # modify it under the terms of the GNU Lesser General Public
10 # License as published by the Free Software Foundation; either
11 # version 2.1 of the License, or (at your option) any later version.
12 #
13 # This library is distributed in the hope that it will be useful,
14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 # Lesser General Public License for more details.
17 #
18 # You should have received a copy of the GNU Lesser General Public
19 # License along with this library; if not, write to the
20 # Free Software Foundation, Inc.,
21 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 # ####################################################################
23
24 from fife import fife
25
26
27 def normalize(vector):
28 """
29 Helper function to normalize a vector
30 """
31 norm = fife.DoublePoint(0,0)
32
33 invLength = 1.0/vector.length()
34 if invLength > 1e-06:
35 norm.x = vector.x * invLength;
36 norm.y = vector.y * invLength;
37 else:
38 norm.x = 0
39 norm.y = 0
40
41 return norm
42
43 class Rect(object):
44 def __init__(self, x = 0, y = 0, w = 0, h = 0):
45 self._x = x
46 self._y = y
47 self._w = w
48 self._h = h
49
50 def intersects(self, rect):
51 _x = self._x - rect.x;
52 _y = self._y - rect.y;
53 _w = self._w;
54 _h = self._h;
55
56 if _x < 0:
57 _w += _x
58 _x = 0
59
60 if _y < 0:
61 _h += _y
62 _y = 0
63
64 if _x + _w > rect.w:
65 _w = rect.w - _x
66
67 if _y + _h > rect.h:
68 _h = rect.h - _y
69
70 if _w <= 0 or _h <= 0:
71 return False
72
73 return True
74
75 def _setX(self, x):
76 self._x = x
77
78 def _getX(self):
79 return self._x
80
81 def _setY(self, y):
82 self._y = y
83
84 def _getY(self):
85 return self._y
86
87 def _setW(self, w):
88 self._w = w
89
90 def _getW(self):
91 return self._w
92
93 def _setH(self, h):
94 self._h = h
95
96 def _getH(self):
97 return self._h
98
99 x = property(_getX, _setX)
100 y = property(_getY, _setY)
101 w = property(_getW, _setW)
102 h = property(_getH, _setH)