annotate gamelib/equipment.py @ 202:3074784c93f4

Animation support
author Neil Muller <drnlmuller@gmail.com>
date Fri, 04 Sep 2009 20:23:30 +0000
parents 67d10f7e0159
children 00d609883252
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1 """Stuff for animals to use."""
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2
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3 import random
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4 import sound
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5 import imagecache
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6 import animations
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7
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8 class Equipment(object):
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9 IS_EQUIPMENT = True
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10 DRAW_LAYER = 0
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11
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12 def __init__(self):
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13 self._buy_price = self.BUY_PRICE
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14 self._sell_price = self.SELL_PRICE
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15 self._name = self.NAME
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16
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17 def buy_price(self):
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18 return self._buy_price
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19
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20 def sell_price(self):
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21 return self._sell_price
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22
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23 def name(self):
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24 return self._name
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25
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26 def images(self, eq_image_attr):
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27 eq_image_file = getattr(self, eq_image_attr, None)
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28 if not eq_image_file:
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29 return None
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30 eq_image_left = imagecache.load_image(eq_image_file)
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31 eq_image_right = imagecache.load_image(eq_image_file, ("right_facing",))
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32 return eq_image_left, eq_image_right, self.DRAW_LAYER
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33
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34 class Weapon(Equipment):
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35 IS_WEAPON = True
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36 DRAW_LAYER = 10
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37
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38 def _get_parameter(self, parameter, wielder):
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39 param = getattr(self, parameter)
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40 if wielder.abode:
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41 mod_attr = 'MODIFY_%s_%s' % (self.TYPE, parameter)
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42 modifier = getattr(wielder.abode.building, mod_attr, lambda r: r)
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43 param = modifier(param)
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44 return param
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45
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46 def in_range(self, gameboard, wielder, target):
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47 """Can the lucky wielder hit the potentially unlucky target with this?"""
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48 return wielder.pos.dist(target.pos) <= self._get_parameter('RANGE', wielder)
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50 def hit(self, gameboard, wielder, target):
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51 """Is the potentially unlucky target actually unlucky?"""
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52 if hasattr(self, 'HIT_SOUND'):
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53 sound.play_sound(self.HIT_SOUND)
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54 if hasattr(self, 'ANIMATION'):
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55 gameboard.animations.append(self.ANIMATION(wielder))
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56 roll = random.randint(1, 100)
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57 base_hit = self._get_parameter('BASE_HIT', wielder)
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58 range_penalty = self._get_parameter('RANGE_PENALTY', wielder)
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59 return roll > (100-base_hit) + range_penalty*wielder.pos.dist(target.pos)
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61 def place(self, animal):
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62 for eq in animal.equipment:
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63 if is_weapon(eq):
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64 return False
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65 return True
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67 class Rifle(Weapon):
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68 TYPE = "GUN"
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69 NAME = "rifle"
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70 BUY_PRICE = 100
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71 SELL_PRICE = 75
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72
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73 RANGE = 3
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74 BASE_HIT = 55
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75 RANGE_PENALTY = 15
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76 HIT_SOUND = "fire-rifle.ogg"
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77
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78 CHICKEN_IMAGE_FILE = 'sprites/equip_rifle.png'
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80 ANIMATION = animations.MuzzleFlash
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81
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82 class Knife(Weapon):
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83 TYPE = "KNIFE"
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84 NAME = "knife"
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85 BUY_PRICE = 25
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86 SELL_PRICE = 15
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87
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88 RANGE = 1
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89 BASE_HIT = 70
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90 RANGE_PENALTY = 0
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92 CHICKEN_IMAGE_FILE = 'sprites/equip_knife.png'
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93
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94 class Armour(Equipment):
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95 IS_ARMOUR = True
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96 DRAW_LAYER = 5
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98 def __init__(self):
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99 super(Armour, self).__init__()
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100 self.hitpoints = self.STARTING_HITPOINTS
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101
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102 def place(self, animal):
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103 for eq in animal.equipment:
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104 if eq.NAME == self.NAME:
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105 return False
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106 return True
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107
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108 def survive_damage(self):
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109 self.hitpoints -= 1
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110 if self.hitpoints > 0:
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111 self._sell_price = int(self._sell_price*self.hitpoints/float(self.hitpoints+1))
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112 return True
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113 return False
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114
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115 class Helmet(Armour):
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116 NAME = "helmet"
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117 BUY_PRICE = 25
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118 SELL_PRICE = 15
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119
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120 STARTING_HITPOINTS = 1
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121
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122 CHICKEN_IMAGE_FILE = 'sprites/helmet.png'
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123
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124 class Kevlar(Armour):
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125 NAME = "kevlar"
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126 BUY_PRICE = 100
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127 SELL_PRICE = 75
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128
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129 STARTING_HITPOINTS = 2
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130
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131 CHICKEN_IMAGE_FILE = 'sprites/kevlar.png'
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132
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133 class Accoutrement(Equipment):
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134 """Things which are not equipment, but are displayed in the same way"""
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135 IS_EQUIPMENT = False
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136 IS_ACCOUTREMENT = True
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137 BUY_PRICE = 0
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138 SELL_PRICE = 0
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139
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140 def place(self, animal):
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141 for eq in animal.accoutrements:
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142 if eq.NAME == self.NAME:
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143 return False
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144 return True
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145
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146 class Spotlight(Accoutrement):
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147 NAME = "spotlight"
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148 CHICKEN_IMAGE_FILE = 'sprites/select_chkn.png'
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149 DRAW_LAYER = -5
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150
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151 class Nest(Accoutrement):
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152 NAME = "nest"
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153 CHICKEN_IMAGE_FILE = 'sprites/nest.png'
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154 DRAW_LAYER = 15
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155
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156 def is_equipment(obj):
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157 """Return true if obj is a build class."""
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158 return getattr(obj, "IS_EQUIPMENT", False) and hasattr(obj, "NAME")
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159
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160 def is_weapon(obj):
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161 return is_equipment(obj) and getattr(obj, 'IS_WEAPON', False)
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162
174
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163 def is_armour(obj):
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164 return is_equipment(obj) and getattr(obj, 'IS_ARMOUR', False)
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165
200
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166 def is_accoutrement(obj):
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167 return not getattr(obj, "IS_EQUIPMENT", False) and hasattr(obj, "NAME") and getattr(obj, 'IS_ACCOUTREMENT', False)
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168
109
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169 EQUIPMENT = []
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170 for name in dir():
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171 obj = eval(name)
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172 try:
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173 if is_equipment(obj):
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174 EQUIPMENT.append(obj)
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175 except TypeError:
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176 pass