gameobjects.py

   1 # object classes - classes for game interactive objects
   2 import pygame
   3 import os.path
   4
   5 import utility
   6
   7 # base class for all objects
   8 class GameObject:
   9         # initialization routine
  10         def __init__ (self, row, col, text, image = None, can_pickup = True):
  11                 self.row = row
  12                 self.col = col
  13                 self.image = image
  14                 self.text = text
  15                 self.can_pickup = can_pickup
  16
  17         # override this for interaction, i.e. when character walks into the item
  18         def interact (self):
  19                 # always return True if the object is interacted with
  20                 # return False to make the object block the player from
  21                 # moving over it
  22                 return True
  23
  24         # use the object on another object
  25         def use (self, otherobject):
  26                 pass
  27
  28
  29 class HealthPotion (GameObject):
  30         # initialize
  31         def __init__ (self, row, col, image):
  32                 text = "health potion"
  33                 GameObject.__init__ (self, row, col, text, image, True)
  34
  35         # no interaction with this object
  36         def interact (self):
  37                 return True
  38
  39         # using the potion
  40         def use (self, butaba):
  41                 butaba.health += 25
  42                 if butaba.health > butaba.MAXHEALTH:
  43                         butaba.health = butaba.MAXHEALTH
  44
  45 class Chest (GameObject):
  46         def __init__ (self, row, col, text, image, key_id, locked = False, items = []):
  47                 self.key_id = key_id
  48                 self.locked = locked
  49                 self.items = items
  50                 GameObject.__init__ (self, row, col, text, image, False)
  51
  52         # no interaction with this object. Also solid so return False
  53         def interact (self):
  54                 # object is solid
  55                 return False
  56
  57         # try to use the key passed to it
  58         def use (self, key):
  59                 # if chest is locked try to unlock it
  60                 if self.locked is True:
  61                         # if the item is a key
  62                         if isinstance (key, Key):
  63                                 # if the key fits the lock
  64                                 # unlock the chest
  65                                 if key.key_id == self.key_id:
  66                                         self.locked = False
  67                                         # return the key
  68                                         return key
  69                         # return None if not a key or key did not fit
  70                         return None
  71                 else:
  72                         return self.locked
  73
  74 class Key (GameObject):
  75         def __init__ (self, row, col, text, image, key_id):
  76                 self.key_id = key_id
  77                 GameObject.__init__ (self, row, col, text, image, True)
  78
  79         # no interaction with this object
  80         def interact (self):
  81                 # key is not a solid object so return True
  82                 return True
  83
  84         # using the key - this is relegated to the locked item for
  85         # convenience, so key does nothing by defaults
  86         def use (self, lockitem):
  87                 pass