Mercurial > rinkhals

annotate gamelib/buildings.py @ 198:355eaae40b1f

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Buildings now affect weapon range and accuracy.
author Jeremy Thurgood <firxen@gmail.com>
date Fri, 04 Sep 2009 19:34:01 +0000
parents b400991ccce1
children 696936621a93
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rev   line source
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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 MODIFY_KNIFE_RANGE = lambda s, x: 0
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55 MODIFY_GUN_RANGE = lambda s, x: -1
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56
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57 def __init__(self, pos):
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58 """Initial image, tile vid position, size and tile number for building."""
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59 self.day_image = imagecache.load_image(self.IMAGE)
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60 self.night_image = imagecache.load_image(self.IMAGE, ('night',))
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61 self.selected_image = imagecache.load_image(self.SELECTED_IMAGE)
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62 self.pos = pos
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63 self.size = self.SIZE
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64 self.tile_no = self.TILE_NO
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65 self._buy_price = self.BUY_PRICE
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66 self._sell_price = self.SELL_PRICE
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67 self._sun_on = True
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68
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69 self._floors = []
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70 for f in range(self.FLOORS):
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71 places = []
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72 for j in range(self.size[1]):
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73 row = []
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74 for i in range(self.size[0]):
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75 row.append(Place(self, (i, j)))
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76 places.append(row)
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77 floor = Floor("Floor %s" % (f+1,), places)
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78 self._floors.append(floor)
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79
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80 # Create the building somewhere far off screen
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81 Sprite.__init__(self, self.day_image, (-1000, -1000))
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82
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83 def tile_positions(self):
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84 """Return pairs of (x, y) tile positions for each of the tile positions
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85 occupied by the building.
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86 """
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87 xpos, ypos = self.pos
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88 xsize, ysize = self.size
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89
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90 for dx in xrange(xsize):
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91 for dy in xrange(ysize):
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92 yield (xpos + dx, ypos + dy)
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93
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94 def loop(self, tv, _sprite):
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95 ppos = tv.tile_to_view(self.pos)
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96 self.rect.x = ppos[0]
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97 self.rect.y = ppos[1]
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98
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99 def move(self, state):
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100 """Given the game state, return a new position for the object"""
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101 # Default is not to move
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102 return self.pos
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103
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104 def place(self, tv):
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105 """Check that the building can be placed at its current position
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106 and place it if possible.
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107 """
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108 # check that all spaces under the structure are grassland
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109 for tile_pos in self.tile_positions():
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110 if not tv.get(tile_pos) == self.GRASSLAND:
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111 return False
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112
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113 # place tile
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114 for tile_pos in self.tile_positions():
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115 tv.set(tile_pos, self.tile_no)
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116
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117 return True
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118
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119 def covers(self, tile_pos):
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120 """Return True if build covers tile_pos, False otherwise."""
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121 xpos, ypos = self.pos
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122 xsize, ysize = self.size
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123 return (xpos <= tile_pos[0] < xpos + xsize) and \
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124 (ypos <= tile_pos[1] < ypos + ysize)
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125
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126 def remove(self, tv):
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127 """Remove the building from its current position."""
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128 # remove tile
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129 for tile_pos in self.tile_positions():
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130 tv.set(tile_pos, self.GRASSLAND)
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131
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132 def buy_price(self):
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133 return self._buy_price
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134
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135 def sell_price(self):
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136 return self._sell_price
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137
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138 def selected(self, selected):
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139 if selected:
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140 self.setimage(self.selected_image)
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141 else:
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142 self.sun(self._sun_on)
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143
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144 def sun(self, sun_on):
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145 self._sun_on = sun_on
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146 if sun_on:
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147 self.setimage(self.day_image)
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148 else:
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149 self.setimage(self.night_image)
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150
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151 def floors(self):
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152 return self._floors
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153
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154 def places(self):
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155 for floor in self._floors:
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156 for row in floor.rows():
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157 for place in row:
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158 yield place
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159
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160 def max_floor_width(self):
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161 return max(floor.width() for floor in self._floors)
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162
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163 def first_empty_place(self):
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164 for place in self.places():
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165 if place.occupant is None:
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166 return place
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167 raise BuildingFullError()
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168
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169 def add_occupant(self, occupant):
125
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170 place = self.first_empty_place()
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171 place.set_occupant(occupant)
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172
125
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173 def occupants(self):
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174 for place in self.places():
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175 if place.occupant is not None:
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176 yield place.occupant
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177
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178 class HenHouse(Building):
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179 """A HenHouse."""
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180
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181 TILE_NO = tiles.REVERSE_TILE_MAP['henhouse']
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182 BUY_PRICE = 100
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183 SELL_PRICE = 90
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184 SIZE = (3, 2)
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185 IMAGE = 'sprites/henhouse.png'
170
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186 SELECTED_IMAGE = 'sprites/select_henhouse.png'
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187 NAME = 'Henhouse'
125
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188 FLOORS = 1
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189
125
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190 class DoubleStoryHenHouse(HenHouse):
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191 """A double story hen house."""
198
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192
133
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193 TILE_NO = tiles.REVERSE_TILE_MAP['hendominium']
125
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194 BUY_PRICE = 300
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195 SELL_PRICE = 150
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196 SIZE = (2, 3)
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197 IMAGE = 'sprites/hendominium.png'
170
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198 SELECTED_IMAGE = 'sprites/select_hendominium.png'
125
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199 NAME = 'Hendominium'
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200 FLOORS = 2
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201
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202 class GuardTower(Building):
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203 """A GuardTower."""
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204
64
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205 TILE_NO = tiles.REVERSE_TILE_MAP['guardtower']
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206 BUY_PRICE = 200
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207 SELL_PRICE = 150
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208 SIZE = (2, 2)
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209 IMAGE = 'sprites/watchtower.png'
170
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210 SELECTED_IMAGE = 'sprites/select_watchtower.png'
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211 NAME = 'Watchtower'
125
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212 FLOORS = 1
57
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213
198
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214 MODIFY_GUN_RANGE = lambda s, x: (3*x)/2
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215 MODIFY_GUN_BASE_HIT = lambda s, x: x-5
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216 MODIFY_GUN_RANGE_PENALTY = lambda s, x: x-1
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217
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218 def is_building(obj):
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219 """Return true if obj is a build class."""
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220 return getattr(obj, "IS_BUILDING", False) and hasattr(obj, "NAME")
64
99fbb652ce8d Refactor buildings so that new ones can be added just by adding a class to buildings.py.
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diff changeset
221
144
a9b800b4175e Add define for henhouses & egg laying.
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222 # Building hens can lay eggs in
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223 HENHOUSES = [HenHouse.NAME, DoubleStoryHenHouse.NAME]
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224
64
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225 BUILDINGS = []
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226 for name in dir():
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227 obj = eval(name)
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228 try:
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229 if is_building(obj):
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230 BUILDINGS.append(obj)
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231 except TypeError:
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232 pass