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 GoldCoins (GameObject):
  26         # initialize
  27         def __init__ (self, row, col, image, value):
  28                 text = "gold coins"
  29                 self.value = value
  30                 GameObject.__init__ (self, row, col, text, image, False, "Take")
  31
  32         # no interaction with this object
  33         def interact (self):
  34                 return True
  35
  36         # use the object on Butaba - add to his gold
  37         def use (self, butaba):
  38                 butaba.gold += self.value
  39
  40
  41 class HealthPotion (GameObject):
  42         # initialize
  43         def __init__ (self, row, col, image):
  44                 text = "health potion"
  45                 GameObject.__init__ (self, row, col, text, image, True, "Drink")
  46
  47         # no interaction with this object
  48         def interact (self):
  49                 return True
  50
  51         # using the potion
  52         def use (self, butaba):
  53                 butaba.health += 25
  54                 if butaba.health > butaba.MAXHEALTH:
  55                         butaba.health = butaba.MAXHEALTH
  56
  57 class Chest (GameObject):
  58         def __init__ (self, row, col, text, image, key_id, locked = False, objects = []):
  59                 self.key_id = key_id
  60                 self.locked = locked
  61                 self.objects = objects
  62                 GameObject.__init__ (self, row, col, text, image, False, "Open")
  63
  64         # no interaction with this object. Also solid so return False
  65         def interact (self):
  66                 # object is solid
  67                 return False
  68
  69         # try to use the key passed to it
  70         def use (self, key):
  71                 # if chest is locked try to unlock it
  72                 if self.locked is True:
  73                         # if the item is a key
  74                         if isinstance (key, Key):
  75                                 # if the key fits the lock
  76                                 # unlock the chest
  77                                 if key.key_id == self.key_id:
  78                                         self.locked = False
  79                                         # return the key
  80                                         return key
  81                         # return None if not a key or key did not fit
  82                         return None
  83                 else:
  84                         return self.locked
  85
  86 class Key (GameObject):
  87         def __init__ (self, row, col, text, image, key_id):
  88                 self.key_id = key_id
  89                 GameObject.__init__ (self, row, col, text, image, True)
  90
  91         # no interaction with this object
  92         def interact (self):
  93                 # key is not a solid object so return True
  94                 return True
  95
  96         # using the key - this is relegated to the locked item for
  97         # convenience, so key does nothing by defaults
  98         def use (self, lockitem):
  99                 pass