annotate gamelib/tiles.py @ 381:7a58dadfd251

little cleanups, every sprite in its proper layer.
author Jeremy Thurgood <firxen@gmail.com>
date Sun, 25 Oct 2009 11:36:30 +0000
parents a8a7ada27fa2
children e3408c803b12
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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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8 class TileMap(object):
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9 """Helper class for describing all the game tiles."""
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10
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11 # number -> (name, image file name)
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12 DEFAULT_TILES = {
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13 0: ("woodland", "woodland.png"),
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14 1: ("grassland", "grassland.png"),
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15 2: ("fence", "fence.png"),
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16 3: ("henhouse", "grassland.png"),
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17 4: ("guardtower", "grassland.png"),
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18 5: ("broken fence", "broken_fence.png"),
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19 6: ("hendominium", "grassland.png"),
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20 }
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22 def __init__(self, tiles=None):
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23 if tiles is None:
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24 tiles = self.DEFAULT_TILES.copy()
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25 self._tiles = tiles
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26 self._reverse_map = dict((v[0], k) for k, v in self._tiles.iteritems())
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28 def __getitem__(self, n):
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29 """Get the string name of tile n."""
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30 return self._tiles[n][0]
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32 def tile_number(self, name):
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33 """Return the tile number of the tile with the given name."""
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34 return self._reverse_map[name]
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35
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36 def tiles_for_image(self, image_name):
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37 """Return tile numbers associated with the given image name."""
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38 for n, (name, image) in self._tiles.iteritems():
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39 if image_name == image:
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40 yield n
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41
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42 TILE_MAP = TileMap()
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43 REVERSE_TILE_MAP = TILE_MAP._reverse_map
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45
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46 class LayeredSprites(object):
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47 # This is as small a subset of list behaviour as we can get away with.
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48 # WARNING: It makes assumptions that may not be justified in the general case.
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49 # Caveat utilitor and all the rest.
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51 def __init__(self, layers=None, default_layer=None):
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52 # Layers are ordered from bottom to top.
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53 if layers is None:
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54 layers = ['default']
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55 self.layers = layers
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56 if default_layer is None:
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57 default_layer = layers[0]
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58 self.default_layer = default_layer
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59 self._sprites = {}
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60 for layer in layers:
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61 self._sprites[layer] = []
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62 self.removed = []
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63
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64 def append(self, sprite, layer=None):
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65 if layer is None:
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66 layer = self.default_layer
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67 self._sprites[layer].append(sprite)
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68 sprite.updated = 1
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70 def remove(self, sprite, layer=None):
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71 if layer is None:
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72 layer = self.default_layer
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73 self._sprites[layer].remove(sprite)
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74 sprite.updated = 1
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75 self.removed.append(sprite)
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77 def __getitem__(self, key):
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78 # vid.py uses sprites[:] to get a mutation-safe list copy, so we need this.
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79 # No other indexing or slicing operations make sense.
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80 if not isinstance(key, slice):
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81 raise IndexError('[:] is the only supported slice/index operation.')
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82 return iter(self)
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83
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84 def __iter__(self):
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85 # We iterate over all sprites in layer order.
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86 for layer in self.layers:
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87 for sprite in self._sprites[layer]:
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88 yield sprite
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89
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91 class FarmVid(tilevid.Tilevid):
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92 """Extension of pgu's TileVid class to handle the complications
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93 of raising chickens.
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94 """
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95 def __init__(self):
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96 tilevid.Tilevid.__init__(self)
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97 self.sprites = LayeredSprites(['buildings', 'animals', 'animations', 'cursor'], 'animals')
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98
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99 def png_folder_load_tiles(self, path):
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100 """Load tiles from a folder of PNG files."""
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101 full_path = data.filepath(path)
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102 for dirpath, dirnames, filenames in os.walk(full_path):
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103 relative_path = dirpath[len(full_path):]
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104 relative_path = "/".join(relative_path.split(os.path.sep))
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105 for filename in filenames:
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106 image_name = "/".join([path, relative_path, filename])
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107 for tile_no in TILE_MAP.tiles_for_image(filename):
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108 tile_name = TILE_MAP[tile_no]
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109 self.tiles[tile_no] = FarmTile(tile_no, tile_name, image_name)
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110
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111 def sun(self, sun_on):
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112 """Make it night."""
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113 for tile in self.tiles:
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114 if hasattr(tile, "sun"):
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115 tile.sun(sun_on)
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116 for sprite in self.sprites:
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117 if hasattr(sprite, "sun"):
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118 sprite.sun(sun_on)
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119
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120 class FarmTile(vid.Tile):
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121
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122 def __init__(self, tile_no, tile_name, image_name):
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123 self.tile_no = tile_no
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124 self.tile_name = tile_name
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125 self.day_image = imagecache.load_image(image_name)
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126 self.night_image = imagecache.load_image(image_name, ("night",))
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127 vid.Tile.__init__(self, self.day_image)
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128
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129 def sun(self, sun_on):
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130 if sun_on:
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131 self.image = self.day_image
2eec29085060 Color night and day.
Simon Cross <hodgestar@gmail.com>
parents: 24
diff changeset
132 else:
2eec29085060 Color night and day.
Simon Cross <hodgestar@gmail.com>
parents: 24
diff changeset
133 self.image = self.night_image