Mercurial > rinkhals

annotate gamelib/tiles.py @ 558:5cdf26bde2f2

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Botanical biodiversity.
author Jeremy Thurgood <firxen@gmail.com>
date Sat, 28 Nov 2009 18:20:55 +0000
parents 11c4cebfe4c5
children
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1 """Extension to pgu's tilevid."""
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2
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3 import random
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4 import os
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5
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6 from pgu import tilevid, vid
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7 import data
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8 import imagecache
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9 import serializer
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11 class TileMap(object):
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12 """Helper class for describing all the game tiles."""
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13
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14 # number -> (name, image file name)
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15 DEFAULT_TILES = {
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16 0: ("woodland", "woodland.png"),
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17 1: ("grassland", "grassland.png"),
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18 2: ("fence", "fence.png"),
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19 3: ("henhouse", "grassland.png"),
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20 4: ("guardtower", "grassland.png"),
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21 5: ("broken fence", "broken_fence.png"),
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22 6: ("hendominium", "grassland.png"),
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23 }
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25 ALTERNATE_TILES = {
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26 255: ("woodland", "woodland.png"),
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27 254: ("woodland", "woodland2.png"),
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28 253: ("woodland", "woodland3.png"),
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29 }
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31 def __init__(self, tiles=None, alternate_tiles=None):
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32 if tiles is None:
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33 tiles = self.DEFAULT_TILES.copy()
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34 if alternate_tiles is None:
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35 alternate_tiles = self.ALTERNATE_TILES.copy()
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36 self._alternate_tiles = alternate_tiles
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37 self._tiles = tiles
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38 self._reverse_map = dict((v[0], k) for k, v in self._tiles.iteritems())
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39 self._tiles.update(alternate_tiles)
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41 def __getitem__(self, n):
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42 """Get the string name of tile n."""
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43 return self._tiles[n][0]
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44
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45 def tiles_for_image(self, image_name):
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46 """Return tile numbers associated with the given image name."""
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47 for n, (name, image) in self._tiles.iteritems():
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48 if image_name == image:
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49 yield n
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50
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51 def random_alternate(self, n):
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52 alts = [a for a, (name, image) in self._alternate_tiles.iteritems() if name == self[n]]
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53 if alts:
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54 return random.choice(alts)
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55 return n
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56
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57 TILE_MAP = TileMap()
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58 REVERSE_TILE_MAP = TILE_MAP._reverse_map
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60
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61 class LayeredSprites(object):
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62 # This is as small a subset of list behaviour as we can get away with.
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63 # WARNING: It makes assumptions that may not be justified in the general case.
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64 # Caveat utilitor and all the rest.
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65
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66 def __init__(self, layers=None, default_layer=None):
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67 # Layers are ordered from bottom to top.
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68 if layers is None:
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69 layers = ['default']
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70 self.layers = layers
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71 if default_layer is None:
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72 default_layer = layers[0]
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73 self.default_layer = default_layer
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74 self._sprites = {}
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75 for layer in layers:
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76 self._sprites[layer] = []
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77 self.removed = []
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78
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79 def append(self, sprite, layer=None):
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80 if layer is None:
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81 layer = self.default_layer
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82 self._sprites[layer].append(sprite)
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83 sprite.updated = 1
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84
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85 def remove(self, sprite, layer=None):
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86 if layer is None:
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87 layer = self.default_layer
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88 self._sprites[layer].remove(sprite)
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89 sprite.updated = 1
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90 self.removed.append(sprite)
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91
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92 def __getitem__(self, key):
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93 # vid.py uses sprites[:] to get a mutation-safe list copy, so we need this.
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94 # No other indexing or slicing operations make sense.
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95 if not isinstance(key, slice):
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96 raise IndexError('[:] is the only supported slice/index operation.')
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97 return iter(self)
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98
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99 def __iter__(self):
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100 # We iterate over all sprites in layer order.
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101 for layer in self.layers:
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102 for sprite in self._sprites[layer]:
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103 yield sprite
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104
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105
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106 class FarmVid(tilevid.Tilevid, serializer.Simplifiable):
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107 """Extension of pgu's TileVid class to handle the complications
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108 of raising chickens.
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109 """
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110
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111 SIMPLIFY = [
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112 'size',
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113 'layers',
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114 'tlayer',
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115 'alayer',
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116 'blayer',
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117 'clayer',
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118 ]
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119
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120 def __init__(self):
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121 tilevid.Tilevid.__init__(self)
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122 self.sprites = LayeredSprites(['buildings', 'animals', 'animations', 'cursor'], 'animals')
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123
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124 @classmethod
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125 def make(cls):
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126 """Override default Simplifiable object creation."""
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127 return cls()
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128
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129 @classmethod
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130 def unsimplify(cls, *args, **kwargs):
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131 """Override default Simplifiable unsimplification."""
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132 obj = serializer.Simplifiable.unsimplify(*args, **kwargs)
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133
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134 obj.view.x, obj.view.y = 0,0
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135 obj._view.x, obj._view.y = 0,0
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136 obj.bounds = None
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137 obj.updates = []
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138
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139 return obj
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140
558
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141 def tga_load_level(self, level_map):
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142 tilevid.Tilevid.tga_load_level(self, level_map)
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143 for xy in [(x, y) for x in range(self.size[0]) for y in range(self.size[1])]:
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144 self.set(xy, TILE_MAP.random_alternate(self.get(xy)))
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145
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146 def png_folder_load_tiles(self, path):
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147 """Load tiles from a folder of PNG files."""
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148 full_path = data.filepath(path)
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149 for dirpath, dirnames, filenames in os.walk(full_path):
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150 relative_path = dirpath[len(full_path):]
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151 relative_path = "/".join(relative_path.split(os.path.sep))
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152 for filename in filenames:
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153 image_name = "/".join([path, relative_path, filename])
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154 for tile_no in TILE_MAP.tiles_for_image(filename):
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155 tile_name = TILE_MAP[tile_no]
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156 self.tiles[tile_no] = FarmTile(tile_no, tile_name, image_name)
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157
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158 def sun(self, sun_on):
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159 """Make it night."""
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160 for tile in self.tiles:
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161 if hasattr(tile, "sun"):
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162 tile.sun(sun_on)
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163 for sprite in self.sprites:
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164 if hasattr(sprite, "sun"):
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165 sprite.sun(sun_on)
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166
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167 class FarmTile(vid.Tile):
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168
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169 def __init__(self, tile_no, tile_name, image_name):
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170 self.tile_no = tile_no
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171 self.tile_name = tile_name
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172 self.day_image = imagecache.load_image(image_name)
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173 self.night_image = imagecache.load_image(image_name, ("night",))
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174 vid.Tile.__init__(self, self.day_image)
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175
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176 def sun(self, sun_on):
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177 if sun_on:
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178 self.image = self.day_image
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179 else:
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180 self.image = self.night_image