Mercurial > rinkhals

annotate gamelib/tiles.py @ 536:1a224ba50edf

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Correctly set the position of newly hatched chickens in buildings
author Neil Muller <drnlmuller@gmail.com>
date Fri, 27 Nov 2009 23:29:32 +0000
parents 3ed6c011106d
children 11c4cebfe4c5
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1 """Extension to pgu's tilevid."""
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2
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3 from pgu import tilevid, vid
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4 import os
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5 import data
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6 import imagecache
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7 import serializer
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9 class TileMap(object):
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10 """Helper class for describing all the game tiles."""
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11
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12 # number -> (name, image file name)
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13 DEFAULT_TILES = {
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14 0: ("woodland", "woodland.png"),
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15 1: ("grassland", "grassland.png"),
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16 2: ("fence", "fence.png"),
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17 3: ("henhouse", "grassland.png"),
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18 4: ("guardtower", "grassland.png"),
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19 5: ("broken fence", "broken_fence.png"),
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20 6: ("hendominium", "grassland.png"),
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21 }
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23 def __init__(self, tiles=None):
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24 if tiles is None:
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25 tiles = self.DEFAULT_TILES.copy()
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26 self._tiles = tiles
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27 self._reverse_map = dict((v[0], k) for k, v in self._tiles.iteritems())
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29 def __getitem__(self, n):
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30 """Get the string name of tile n."""
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31 return self._tiles[n][0]
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33 def tile_number(self, name):
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34 """Return the tile number of the tile with the given name."""
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35 return self._reverse_map[name]
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36
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37 def tiles_for_image(self, image_name):
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38 """Return tile numbers associated with the given image name."""
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39 for n, (name, image) in self._tiles.iteritems():
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40 if image_name == image:
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41 yield n
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43 TILE_MAP = TileMap()
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44 REVERSE_TILE_MAP = TILE_MAP._reverse_map
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46
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47 class LayeredSprites(object):
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48 # This is as small a subset of list behaviour as we can get away with.
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49 # WARNING: It makes assumptions that may not be justified in the general case.
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50 # Caveat utilitor and all the rest.
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51
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52 def __init__(self, layers=None, default_layer=None):
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53 # Layers are ordered from bottom to top.
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54 if layers is None:
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55 layers = ['default']
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56 self.layers = layers
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57 if default_layer is None:
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58 default_layer = layers[0]
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59 self.default_layer = default_layer
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60 self._sprites = {}
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61 for layer in layers:
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62 self._sprites[layer] = []
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63 self.removed = []
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64
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65 def append(self, sprite, layer=None):
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66 if layer is None:
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67 layer = self.default_layer
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68 self._sprites[layer].append(sprite)
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69 sprite.updated = 1
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70
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71 def remove(self, sprite, layer=None):
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72 if layer is None:
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73 layer = self.default_layer
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74 self._sprites[layer].remove(sprite)
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75 sprite.updated = 1
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76 self.removed.append(sprite)
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77
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78 def __getitem__(self, key):
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79 # vid.py uses sprites[:] to get a mutation-safe list copy, so we need this.
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80 # No other indexing or slicing operations make sense.
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81 if not isinstance(key, slice):
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82 raise IndexError('[:] is the only supported slice/index operation.')
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83 return iter(self)
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84
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85 def __iter__(self):
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86 # We iterate over all sprites in layer order.
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87 for layer in self.layers:
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88 for sprite in self._sprites[layer]:
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89 yield sprite
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90
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91
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92 class FarmVid(tilevid.Tilevid, serializer.Simplifiable):
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93 """Extension of pgu's TileVid class to handle the complications
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94 of raising chickens.
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95 """
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96
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97 SIMPLIFY = [
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98 'size',
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99 'layers',
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100 'tlayer',
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101 'alayer',
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102 'blayer',
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103 'clayer',
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104 ]
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105
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106 def __init__(self):
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107 tilevid.Tilevid.__init__(self)
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108 self.sprites = LayeredSprites(['buildings', 'animals', 'animations', 'cursor'], 'animals')
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109
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110 @classmethod
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111 def make(cls):
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112 """Override default Simplifiable object creation."""
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113 return cls()
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114
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115 @classmethod
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116 def unsimplify(cls, *args, **kwargs):
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117 """Override default Simplifiable unsimplification."""
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118 obj = serializer.Simplifiable.unsimplify(*args, **kwargs)
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119
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120 obj.view.x, obj.view.y = 0,0
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121 obj._view.x, obj._view.y = 0,0
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122 obj.bounds = None
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123 obj.updates = []
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124
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125 return obj
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126
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127 def png_folder_load_tiles(self, path):
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128 """Load tiles from a folder of PNG files."""
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129 full_path = data.filepath(path)
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130 for dirpath, dirnames, filenames in os.walk(full_path):
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131 relative_path = dirpath[len(full_path):]
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132 relative_path = "/".join(relative_path.split(os.path.sep))
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133 for filename in filenames:
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134 image_name = "/".join([path, relative_path, filename])
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135 for tile_no in TILE_MAP.tiles_for_image(filename):
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136 tile_name = TILE_MAP[tile_no]
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137 self.tiles[tile_no] = FarmTile(tile_no, tile_name, image_name)
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138
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139 def sun(self, sun_on):
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140 """Make it night."""
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141 for tile in self.tiles:
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142 if hasattr(tile, "sun"):
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143 tile.sun(sun_on)
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144 for sprite in self.sprites:
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145 if hasattr(sprite, "sun"):
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146 sprite.sun(sun_on)
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147
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148 class FarmTile(vid.Tile):
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149
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150 def __init__(self, tile_no, tile_name, image_name):
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151 self.tile_no = tile_no
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152 self.tile_name = tile_name
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153 self.day_image = imagecache.load_image(image_name)
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154 self.night_image = imagecache.load_image(image_name, ("night",))
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155 vid.Tile.__init__(self, self.day_image)
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156
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157 def sun(self, sun_on):
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158 if sun_on:
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159 self.image = self.day_image
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160 else:
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161 self.image = self.night_image