Mercurial > rinkhals

annotate gamelib/buildings.py @ 170:92d11e0544bc

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Switch building to selected image when building is selected.
author Simon Cross <hodgestar@gmail.com>
date Thu, 03 Sep 2009 22:59:30 +0000
parents a9b800b4175e
children b400991ccce1
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rev   line source
43
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1 """Classes for various buildings in the game."""
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2
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3 from pgu.vid import Sprite
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4
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5 import imagecache
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6 import tiles
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7
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8 class Place(object):
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9 """Space within a building that can be occupied."""
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10
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11 def __init__(self, building, offset):
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12 self.occupant = None
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13 self.building = building
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14 self.offset = offset
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15
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16 def set_occupant(self, occupant):
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17 self.clear_occupant()
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18 self.occupant = occupant
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19 self.occupant.abode = self
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20
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21 def clear_occupant(self):
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22 if self.occupant is not None:
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23 self.occupant.abode = None
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24 self.occupant = None
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25
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26 def get_pos(self):
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27 bpos = self.building.pos
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28 return (bpos[0] + self.offset[0], bpos[1] + self.offset[1])
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29
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30 class Floor(object):
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31 """A set of places within a building. Places on a
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32 floor are organised into rows and columns.
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33 """
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34
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35 def __init__(self, title, places):
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36 self.title = title # str
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37 self.places = places # list of lists of places
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38
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39 def rows(self):
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40 for row in self.places:
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41 yield row
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42
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43 def width(self):
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44 return max(len(row) for row in self.places)
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45
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46 class BuildingFullError(Exception):
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47 pass
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48
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49 class Building(Sprite):
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50 """Base class for buildings"""
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51
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52 IS_BUILDING = True
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53 GRASSLAND = tiles.REVERSE_TILE_MAP['grassland']
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54
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55 def __init__(self, pos):
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56 """Initial image, tile vid position, size and tile number for building."""
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57 self.day_image = imagecache.load_image(self.IMAGE)
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58 self.night_image = imagecache.load_image(self.IMAGE, ('night',))
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59 self.selected_image = imagecache.load_image(self.SELECTED_IMAGE)
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60 self.pos = pos
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61 self.size = self.SIZE
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62 self.tile_no = self.TILE_NO
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63 self._buy_price = self.BUY_PRICE
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64 self._sell_price = self.SELL_PRICE
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65 self._sun_on = True
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66
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67 self._floors = []
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68 for f in range(self.FLOORS):
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69 places = []
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70 for j in range(self.size[1]):
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71 row = []
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72 for i in range(self.size[0]):
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73 row.append(Place(self, (i, j)))
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74 places.append(row)
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75 floor = Floor("Floor %s" % (f+1,), places)
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76 self._floors.append(floor)
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77
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78 # Create the building somewhere far off screen
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79 Sprite.__init__(self, self.day_image, (-1000, -1000))
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80
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81 def tile_positions(self):
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82 """Return pairs of (x, y) tile positions for each of the tile positions
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83 occupied by the building.
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84 """
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85 xpos, ypos = self.pos
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86 xsize, ysize = self.size
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87
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88 for dx in xrange(xsize):
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89 for dy in xrange(ysize):
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90 yield (xpos + dx, ypos + dy)
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91
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92 def loop(self, tv, _sprite):
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93 ppos = tv.tile_to_view(self.pos)
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94 self.rect.x = ppos[0]
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95 self.rect.y = ppos[1]
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96
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97 def move(self, state):
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98 """Given the game state, return a new position for the object"""
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99 # Default is not to move
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100 return self.pos
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101
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102 def place(self, tv):
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103 """Check that the building can be placed at its current position
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104 and place it if possible.
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105 """
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106 # check that all spaces under the structure are grassland
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107 for tile_pos in self.tile_positions():
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108 if not tv.get(tile_pos) == self.GRASSLAND:
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109 return False
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110
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111 # place tile
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112 for tile_pos in self.tile_positions():
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113 tv.set(tile_pos, self.tile_no)
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114
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115 return True
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116
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117 def covers(self, tile_pos):
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118 """Return True if build covers tile_pos, False otherwise."""
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119 xpos, ypos = self.pos
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120 xsize, ysize = self.size
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121 return (xpos <= tile_pos[0] < xpos + xsize) and \
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122 (ypos <= tile_pos[1] < ypos + ysize)
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123
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124 def remove(self, tv):
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125 """Remove the building from its current position."""
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126 # remove tile
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127 for tile_pos in self.tile_positions():
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128 tv.set(tile_pos, self.GRASSLAND)
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129
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130 def buy_price(self):
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131 return self._buy_price
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132
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133 def sell_price(self):
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134 return self._sell_price
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135
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136 def selected(self, selected):
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137 if selected:
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138 self.setimage(self.selected_image)
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139 else:
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140 self.sun(self._sun_on)
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141
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142 def sun(self, sun_on):
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143 self._sun_on = sun_on
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144 if sun_on:
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145 self.setimage(self.day_image)
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146 else:
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147 self.setimage(self.night_image)
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148
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149 def floors(self):
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150 return self._floors
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151
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152 def places(self):
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153 for floor in self._floors:
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154 for row in floor.rows():
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155 for place in row:
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156 yield place
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157
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158 def max_floor_width(self):
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159 return max(floor.width() for floor in self._floors)
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160
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161 def first_empty_place(self):
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162 for place in self.places():
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163 if place.occupant is None:
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164 return place
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165 raise BuildingFullError()
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166
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167 def add_occupant(self, occupant):
125
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168 place = self.first_empty_place()
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169 place.set_occupant(occupant)
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170
125
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171 def occupants(self):
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172 for place in self.places():
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173 if place.occupant is not None:
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174 yield place.occupant
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175
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176 class HenHouse(Building):
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177 """A HenHouse."""
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178
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179 TILE_NO = tiles.REVERSE_TILE_MAP['henhouse']
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180 BUY_PRICE = 100
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181 SELL_PRICE = 90
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182 SIZE = (3, 2)
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183 IMAGE = 'sprites/henhouse.png'
170
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184 SELECTED_IMAGE = 'sprites/select_henhouse.png'
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185 NAME = 'Hen House'
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186 FLOORS = 1
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187
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188 class DoubleStoryHenHouse(HenHouse):
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189 """A double story hen house."""
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190 TILE_NO = tiles.REVERSE_TILE_MAP['hendominium']
125
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191 BUY_PRICE = 300
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192 SELL_PRICE = 150
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193 SIZE = (2, 3)
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194 IMAGE = 'sprites/hendominium.png'
170
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195 SELECTED_IMAGE = 'sprites/select_hendominium.png'
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196 NAME = 'Hendominium'
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197 FLOORS = 2
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198
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199 class GuardTower(Building):
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200 """A GuardTower."""
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201
64
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202 TILE_NO = tiles.REVERSE_TILE_MAP['guardtower']
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203 BUY_PRICE = 200
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204 SELL_PRICE = 150
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205 SIZE = (2, 2)
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206 IMAGE = 'sprites/watchtower.png'
170
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207 SELECTED_IMAGE = 'sprites/select_watchtower.png'
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208 NAME = 'Watch Tower'
125
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209 FLOORS = 1
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210
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211 def is_building(obj):
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212 """Return true if obj is a build class."""
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213 return getattr(obj, "IS_BUILDING", False) and hasattr(obj, "NAME")
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214
144
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215 # Building hens can lay eggs in
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216 HENHOUSES = [HenHouse.NAME, DoubleStoryHenHouse.NAME]
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217
64
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218 BUILDINGS = []
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219 for name in dir():
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220 obj = eval(name)
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221 try:
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222 if is_building(obj):
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223 BUILDINGS.append(obj)
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224 except TypeError:
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225 pass