gameobjects.py

   1 # object classes - classes for game interactive objects
   2
   3 # base class for all objects
   4 class GameObject:
   5         # initialization routine
   6         def __init__ (self, row, col, text, image = None, can_pickup = True, use_str = "Use"):
   7                 self.row = row
   8                 self.col = col
   9                 self.image = image
  10                 self.text = text
  11                 self.can_pickup = can_pickup
  12                 self.use_str = use_str
  13
  14         # override this for interaction, i.e. when character walks into the item
  15         def interact (self):
  16                 # always return True if the object is interacted with
  17                 # return False to make the object block the player from
  18                 # moving over it
  19                 return True
  20
  21         # use the object on another object
  22         def use (self, otherobject):
  23                 pass
  24
  25 # class for well
  26 class Well (GameObject):
  27         def __init__ (self, row, col, image=None, liquid = "water"):
  28                 self.liquid = liquid
  29                 text = "Well"
  30                 GameObject.__init__ (self, row, col, text, image, False, "Draw %s" % liquid)
  31
  32         def interact (self):
  33                 return False
  34
  35         def use (self, otherobject):
  36                 # if the object is a bucket, fill it
  37                 if isinstance (otherobject, Bucket) is True:
  38                         # but only if it is empty
  39                         if otherobject.liquid is None:
  40                                 otherobject.liquid = self.liquid
  41
  42
  43 # class for buckets
  44 class Bucket (GameObject):
  45         def __init__ (self, row, col, image=None, liquid = None):
  46                 self.liquid = liquid
  47                 text = "Bucket"
  48                 if liquid is not None:
  49                         text = text + " containing %s" % liquid
  50                 GameObject.__init__ (self, row, col, text, image, True, "Empty it")
  51
  52         def interact (self):
  53                 return True
  54
  55         def use (self, otherobject):
  56                 # if the other object is a bucket, transfer its
  57                 # contents to the other bucket
  58                 if isinstance (otherobject, Bucket):
  59                         otherobject.liquid = self.liquid
  60                 # empty the bucket of its contents
  61                 self.liquid = None
  62                 self.text = "Bucket"
  63
  64 class GoldCoins (GameObject):
  65         # initialize
  66         def __init__ (self, row, col, image, value):
  67                 text = "gold coins"
  68                 self.value = value
  69                 GameObject.__init__ (self, row, col, text, image, False, "Take")
  70
  71         # no interaction with this object
  72         def interact (self):
  73                 return True
  74
  75         # use the object on Butaba - add to his gold
  76         def use (self, butaba):
  77                 butaba.gold += self.value
  78
  79
  80 class HealthPotion (GameObject):
  81         # initialize
  82         def __init__ (self, row, col, image):
  83                 text = "health potion"
  84                 GameObject.__init__ (self, row, col, text, image, True, "Drink")
  85
  86         # no interaction with this object
  87         def interact (self):
  88                 return True
  89
  90         # using the potion
  91         def use (self, butaba):
  92                 butaba.health += 25
  93                 if butaba.health > constants.MAXHEALTH:
  94                         butaba.health = constants.MAXHEALTH
  95
  96 class Chest (GameObject):
  97         def __init__ (self, row, col, text, image, key_id, locked = False, objects = []):
  98                 self.key_id = key_id
  99                 self.locked = locked
 100                 self.objects = objects
 101                 GameObject.__init__ (self, row, col, text, image, False, "Open")
 102
 103         # no interaction with this object. Also solid so return False
 104         def interact (self):
 105                 # object is solid
 106                 return False
 107
 108         # try to use the key passed to it
 109         def use (self, key):
 110                 # if chest is locked try to unlock it
 111                 if self.locked is True:
 112                         # if the item is a key
 113                         if isinstance (key, Key):
 114                                 # if the key fits the lock
 115                                 # unlock the chest
 116                                 if key.key_id == self.key_id:
 117                                         self.locked = False
 118                                         # return the key
 119                                         return key
 120                         # return None if not a key or key did not fit
 121                         return None
 122                 else:
 123                         return self.locked
 124
 125 class Key (GameObject):
 126         def __init__ (self, row, col, text, image, key_id):
 127                 self.key_id = key_id
 128                 GameObject.__init__ (self, row, col, text, image, True)
 129
 130         # no interaction with this object
 131         def interact (self):
 132                 # key is not a solid object so return True
 133                 return True
 134
 135         # using the key - this is relegated to the locked item for
 136         # convenience, so key does nothing by defaults
 137         def use (self, lockitem):
 138                 pass