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annotate orpg/mapper/isometric.py @ 195:b633f4c64aae alpha

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Traipse Alpha 'OpenRPG' {100219-00} Traipse is a distribution of OpenRPG that is designed to be easy to setup and go. Traipse also makes it easy for developers to work on code without fear of sacrifice. 'Ornery-Orc' continues the trend of 'Grumpy' and adds fixes to the code. 'Ornery-Orc's main goal is to offer more advanced features and enhance the productivity of the user. Update Summary (Patch-2) New Features: New Namespace method with two new syntaxes Fixes: Fix to Server GUI startup errors Fix to Server GUI Rooms tab updating Fix to Chat and Settings if non existant die roller is picked Fix to Dieroller and .open() used with .vs(). Successes are correctly calculated Fix to Alias Lib's Export to Tree, Open, Save features Fix to alias node, now works properly Fix to Splitter node, minor GUI cleanup
author sirebral
date Sat, 24 Apr 2010 08:37:20 -0500
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0
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1 # Copyright (C) 2000-2001 The OpenRPG Project
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2 #
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3 # openrpg-dev@lists.sourceforge.net
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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 by
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7 # the Free Software Foundation; either version 2 of the License, or
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8 # (at your option) any later version.
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9 #
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10 # This program is distributed in the hope that it will be useful,
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11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 # GNU General Public License for more details.
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14 #
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15 # You should have received a copy of the GNU General Public License
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16 # along with this program; if not, write to the Free Software
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17 # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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18 # --
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19 #
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20 # File: mapper/isometric.py
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21 # Author: Todd Faris (Snowdog)
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22 # Maintainer:
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23 # Version:
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24 #
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25 # Description:
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26 # helper class definition for drawing and line collision within an isometric grid
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27 # based on a interger based coordinate system where X increase to the right
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28 # and Y increases in the downward direction
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29
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30
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31 class IsoGrid:
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32 def __init__(self,width):
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33 self.ratio = 2.0
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34 self.width = width
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35 self.height = 0
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36 self.CalcRatio()
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37 self.center_x = 0
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38 self.center_y = 0
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39
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40 def Ratio(self, r ):
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41 "changes the height/width ratio of the isometric rectangle with respect to the horizontal (x) axis"
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42 self.ratio = float(r)
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43 self.CalcRatio()
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44
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45 def CalcRatio(self):
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46 if (self.ratio <= 0): self.ratio = 1
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47 self.height = int( float(self.width)/float(self.ratio) )
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48
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49 def BoundPlace(self, left,top):
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50 "Places the isometric rectangle using its upper left bounding corner for positioning"
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51 dx,dy = self.CornerOffset()
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52 self.Recenter( left+dx, top+dy)
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53
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54 def Recenter(self,x,y):
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55 "Places the isomentric rectangle using the centerpoint"
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56 self.center_x = x
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57 self.center_y = y
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58
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59 def Top(self):
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60 "Returns the topmost point of the isometric rectangle as a tuple (x,y)"
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61 x = int(self.center_x)
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62 y = int(self.center_y) - int(self.height/2)
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63 return(x,y)
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64
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65 def Left(self):
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66 "Returns the leftmost point of the isometric rectangle as a tuple (x,y)"
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67 x = int(self.center_x) - int(self.width/2)
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68 y = int(self.center_y)
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69 return(x,y)
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70
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71 def Right(self):
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72 "Returns the rightmost point of the isometric rectangle as a tuple (x,y)"
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73 x,y = self.Left()
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74 x = x + self.width
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75 return(x,y)
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76
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77 def Bottom(self):
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78 "Returns the bottommost point of the isometric rectangle as a tuple (x,y)"
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79 x,y = self.Top()
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80 y = y + self.height
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81 return(x,y)
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82
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83 def Center(self):
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84 "Returns the center point of the isometric rectangle as a tuple (x,y)"
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85 x = int(self.center_x)
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86 y = int(self.center_y)
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87 return(x,y)
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88
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89 def CornerOffset(self):
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90 """Returns a tuple (delta_x,delta_y) representing the offset from the centerpoint
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91 of the isometric rectangle to the upper left corner of its rectangular bounding box"""
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92 dx = float(self.width/2)
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93 dy = float(self.height/2)
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94 return (dx,dy)
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95
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96 def Height(self):
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97 "Returns the height of the isometric rectangle based on current ratio"
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98 return int(self.height)
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99
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100 def Width(self):
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101 "returns the width of the isomentric rectangle"
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102 return int(self.width)