Mercurial > rinkhals
annotate gamelib/misc.py @ 501:1da14b3d8773
Utility for examining compressed save games.
| author | Simon Cross <hodgestar@gmail.com> |
|---|---|
| date | Thu, 26 Nov 2009 00:31:54 +0000 |
| parents | 96dbf2c8506e |
| children | f84ad10a9625 |
| rev | line source |
|---|---|
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1 # Holder for misc useful classes |
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2 |
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3 import random |
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4 |
| 336 | 5 from pygame.locals import KEYDOWN, K_ESCAPE |
| 6 from pgu import gui | |
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7 from pgu.algo import getline |
| 336 | 8 |
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9 import serializer |
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10 |
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11 class Position(serializer.Simplifiable): |
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12 """2D/3D position / vector. Assumed immutable.""" |
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13 |
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14 SIMPLIFY = ['x', 'y', 'z'] |
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15 |
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16 def __init__(self, x, y, z=0): |
| 100 | 17 self.x = x |
| 18 self.y = y | |
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19 self.z = z |
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20 |
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21 def to_tile_tuple(self): |
| 100 | 22 return self.x, self.y |
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23 |
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24 def to_3d_tuple(self): |
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25 return self.x, self.y, self.z |
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26 |
| 100 | 27 def dist(self, b): |
| 28 """Gives the distance to another position""" | |
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29 |
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30 return max(abs(self.x - b.x), abs(self.y - b.y), abs(self.z - b.z)) |
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31 |
| 100 | 32 def __sub__(self, b): |
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33 return Position(self.x - b.x, self.y - b.y, self.z - b.z) |
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34 |
| 100 | 35 def __add__(self, b): |
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36 return Position(self.x + b.x, self.y + b.y, self.z + b.z) |
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37 |
| 100 | 38 def left_of(self, b): |
| 39 return self.x < b.x | |
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40 |
| 100 | 41 def right_of(self, b): |
| 42 return self.x > b.x | |
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43 |
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44 def __hash__(self): |
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45 return hash(self.to_3d_tuple()) |
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46 |
| 100 | 47 def __eq__(self, b): |
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48 return self.to_3d_tuple() == b.to_3d_tuple() |
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49 |
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50 def __str__(self): |
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51 return "<Position: %s>" % (self.to_3d_tuple(),) |
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52 |
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53 def intermediate_positions(self, b): |
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54 """Only operates in two dimensions.""" |
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55 if max(abs(self.x - b.x), abs(self.y - b.y)) <= 1: |
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56 # pgu gets this case wrong on occasion. |
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57 return [b] |
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58 start = self.to_tile_tuple() |
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59 end = b.to_tile_tuple() |
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60 points = getline(start, end) |
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61 points.remove(start) # exclude start_pos |
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62 if end not in points: |
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63 # Rounding errors in getline cause this |
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64 points.append(end) |
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65 return [Position(p[0], p[1]) for p in points] |
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66 |
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67 class WeightedSelection(object): |
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68 def __init__(self, weightings=None): |
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69 self.weightings = [] |
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70 self.total = 0 |
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71 if weightings: |
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72 for item, weight in weightings: |
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73 self.weightings.append((item, weight)) |
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74 self.total += weight |
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75 |
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76 def choose(self): |
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77 roll = random.uniform(0, self.total) |
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78 for item, weight in self.weightings: |
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79 if roll < weight: |
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80 return item |
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81 roll -= weight |
| 336 | 82 |
| 83 class CheckDialog(gui.Dialog): | |
| 84 def __init__(self, **params): | |
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85 title = gui.Label('Are You Sure?') |
| 336 | 86 self.do_quit = False |
| 87 self.running = True | |
| 88 tbl = gui.Table() | |
| 89 tbl.tr() | |
| 90 tbl.td(gui.Label("Do you REALLY want to exit this game?"), colspan=2) | |
| 91 tbl.tr() | |
| 92 tbl.td(gui.Spacer(0, 15), colspan=2) | |
| 93 tbl.tr() | |
| 94 yes_button = gui.Button('Yes') | |
| 95 yes_button.connect(gui.CLICK, self.clicked, True) | |
| 96 no_button = gui.Button('No') | |
| 97 no_button.connect(gui.CLICK, self.clicked, False) | |
| 98 tbl.td(no_button, align=-1) | |
| 99 tbl.td(yes_button, align=1) | |
| 100 gui.Dialog.__init__(self, title, tbl, **params) | |
| 101 | |
| 102 def clicked(self, val): | |
| 103 self.do_quit = val | |
| 104 self.running = False | |
| 105 self.close() | |
| 106 | |
| 107 def event(self, e): | |
| 108 if e.type == KEYDOWN and e.key == K_ESCAPE: | |
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109 self.clicked(False) |
| 336 | 110 return True |
| 111 return gui.Dialog.event(self, e) | |
| 112 | |
| 113 def check_exit(): | |
| 114 dialog = CheckDialog() | |
| 115 dialog.open() | |
| 116 return dialog | |
| 117 | |
| 118 |