maingame.py

   1 import pygame
   2 import sys
   3 import random
   4 import os.path
   5 import cPickle
   6
   7 import level
   8 import butaba
   9 import utility
  10 import gameobjects
  11 import constants
  12 import npcs
  13 import gamestate
  14
  15 class MainGame:
  16
  17         # initialize the game
  18         def __init__ (self):
  19                 random.seed ()
  20                 pygame.init ()
  21
  22                 self.clock = pygame.time.Clock ()
  23                 self.screen  = pygame.display.set_mode ((720, 512))
  24                 pygame.display.set_caption ("The Adventures of Butaba")
  25
  26                 # initalize background graphics
  27                 self.img_tileset = pygame.image.load (os.path.join ("background", "tileset.png")).convert ()
  28
  29                 self.img_menu = pygame.image.load (os.path.join ("background", "menu_screen.png")).convert ()
  30
  31                 self.img_inventory = pygame.image.load (os.path.join ("background", "inventory.png")).convert ()
  32
  33                 self.img_chestbg = pygame.image.load (os.path.join ("background", "chestcontent.png")).convert ()
  34
  35                 self.img_dialogue = pygame.image.load (os.path.join ("background", "dialog_screen.png")).convert ()
  36                 self.img_dialogue.set_colorkey (pygame.Color (0, 255, 0))
  37
  38
  39                 # initialize object graphics
  40                 self.img_redpotion = pygame.image.load (os.path.join ("objects", "red-potion.png")).convert ()
  41                 self.img_redpotion.set_colorkey (pygame.Color (0, 255, 0))
  42                 self.img_goldcoins = pygame.image.load (os.path.join ("objects", "gold-coins.png")).convert ()
  43                 self.img_goldcoins.set_colorkey (pygame.Color (0, 255, 0))
  44                 self.img_wand = pygame.image.load (os.path.join ("objects", "wand.png")).convert ()
  45                 self.img_wand.set_colorkey (pygame.Color (0, 255, 0))
  46                 self.img_bulb = pygame.image.load (os.path.join ("objects", "bulb.png")).convert ()
  47                 self.img_bulb.set_colorkey (pygame.Color (0, 255, 0))
  48                 self.img_lightning = pygame.image.load (os.path.join ("objects", "lightning.png")).convert ()
  49                 self.img_lightning.set_colorkey (pygame.Color (0, 255, 0))
  50                 self.img_key = pygame.image.load (os.path.join ("objects", "key.png")).convert ()
  51                 self.img_key.set_colorkey (pygame.Color (0, 255, 0))
  52                 self.img_key2 = pygame.image.load (os.path.join ("objects", "key2.png")).convert ()
  53                 self.img_key2.set_colorkey (pygame.Color (0, 255, 0))
  54                 self.img_chest = pygame.image.load (os.path.join ("objects", "chest.png")).convert ()
  55                 self.img_chest.set_colorkey (pygame.Color (0, 255, 0))
  56                 self.img_bucket = pygame.image.load (os.path.join ("objects", "bucket.png")).convert ()
  57                 self.img_bucket.set_colorkey (pygame.Color (0, 255, 0))
  58
  59                 # initialize player graphics
  60                 self.img_butabafront = pygame.image.load (os.path.join ("sprite", "butaba-front.png")).convert ()
  61                 self.img_butabafront.set_colorkey (pygame.Color (0, 255, 0))
  62                 self.img_butababack = pygame.image.load (os.path.join ("sprite", "butaba-back.png")).convert ()
  63                 self.img_butababack.set_colorkey (pygame.Color (0, 255, 0))
  64                 self.img_butabaleft = pygame.image.load (os.path.join ("sprite", "butaba-left.png")).convert ()
  65                 self.img_butabaleft.set_colorkey (pygame.Color (0, 255, 0))
  66                 self.img_butabaright = pygame.image.load (os.path.join ("sprite", "butaba-right.png")).convert ()
  67                 self.img_butabaright.set_colorkey (pygame.Color (0, 255, 0))
  68
  69                 # initialize NPC graphics
  70                 self.img_bulisafront = pygame.image.load (os.path.join ("sprite", "bulisa-front.png")).convert ()
  71                 self.img_bulisafront.set_colorkey (pygame.Color (0, 255, 0))
  72
  73                 self.img_bulisaback = pygame.image.load (os.path.join ("sprite", "bulisa-back.png")).convert ()
  74                 self.img_bulisaback.set_colorkey (pygame.Color (0, 255, 0))
  75
  76                 self.img_bulisaleft = pygame.image.load (os.path.join ("sprite", "bulisa-left.png")).convert ()
  77                 self.img_bulisaleft.set_colorkey (pygame.Color (0, 255, 0))
  78
  79                 self.img_bulisaright = pygame.image.load (os.path.join ("sprite", "bulisa-right.png")).convert ()
  80                 self.img_bulisaright.set_colorkey (pygame.Color (0, 255, 0))
  81
  82                 # initialize portraits
  83                 self.img_butaba_portrait = pygame.image.load (os.path.join ("portraits", "butaba.png")).convert ()
  84                 self.img_bulisa_portrait = pygame.image.load (os.path.join ("portraits", "bulisa.png")).convert ()
  85
  86                 # set level data
  87                 self.setup_levels ()
  88                 # set current level and position of our character
  89                 self.currentlevel = self.level1
  90
  91                 # set the status message
  92                 self.status_message = "Game started"
  93
  94                 self.butaba = butaba.Butaba (5,0, self.img_butabaleft,
  95                                                                         self.img_butabaright, self.img_butabafront,
  96                                                                         self.img_butababack, self.img_butaba_portrait, constants.RIGHT)
  97
  98         # set up the levels and their interactions
  99         def setup_levels (self):
 100                 # set up the objects first
 101                 chest1 = gameobjects.Chest (2, 6, "chest", self.img_chest, constants.KEY_CHEST1, True)
 102                 chest2 = gameobjects.Chest (6, 6, "chest", self.img_chest, constants.KEY_CHEST2, True)
 103                 key2 =  gameobjects.Key (5, 3, "a chest key", self.img_key, constants.KEY_CHEST2)
 104                 potion = gameobjects.HealthPotion (5, 2, self.img_redpotion)
 105                 gold50 = gameobjects.GoldCoins (6, 2, self.img_goldcoins, 50)
 106                 gold25 = gameobjects.GoldCoins (6, 2, self.img_goldcoins, 25)
 107                 gold10 = gameobjects.GoldCoins (6, 2, self.img_goldcoins, 10)
 108                 bucket = gameobjects.Bucket (6, 3, self.img_bucket)
 109
 110                 well1 = gameobjects.Well (4, 7)
 111                 well2 = gameobjects.Well (5, 7)
 112                 well3 = gameobjects.Well (4, 8)
 113                 well4 = gameobjects.Well (5, 8)
 114
 115                 npc_bulisa = npcs.Bulisa (4, 3, self.img_bulisaleft, self.img_bulisaright,
 116                                                                         self.img_bulisafront, self.img_bulisaback,
 117                                                                         self.img_bulisa_portrait, constants.FRONT,
 118                                                                         (2, 2, 2, 2),
 119                                                                         [ os.path.join ("dialogues", "bulisa1.dlg"),
 120                                                                           os.path.join ("dialogues", "bulisa2.dlg"),
 121                                                                           os.path.join ("dialogues", "bulisa3.dlg"),
 122                                                                           os.path.join ("dialogues", "bulisa4.dlg") ] )
 123
 124                 chest1.objects = [ gold50, gold25, key2, gold10 ]
 125
 126                 # create the levels
 127                 self.level1 = level.Level (cPickle.load (file (os.path.join ("levels", "level1.dat"))),
 128                                 objects = [ chest1 ] )
 129
 130                 self.level1w = level.Level (cPickle.load (file (os.path.join ("levels", "level1w.dat"))))
 131
 132                 self.level1e = level.Level (cPickle.load (file (os.path.join ("levels", "level1e.dat"))),
 133                                 objects = [ potion, chest2 ], npcs = [ npc_bulisa ])
 134
 135                 self.level1ee = level.Level (cPickle.load (file (os.path.join ("levels", "level1ee.dat"))),
 136                                 objects = [ well1, well2, well3, well4 ])
 137
 138                 self.level1n = level.Level (cPickle.load (file (os.path.join ("levels", "level1n.dat"))),
 139                                 objects = [ bucket ])
 140
 141                 # set up the interaction between levels
 142                 self.level1.levelright = self.level1e
 143                 self.level1.levelleft = self.level1w
 144                 self.level1e.levelleft = self.level1
 145                 self.level1e.levelright = self.level1ee
 146                 self.level1ee.levelleft = self.level1e
 147                 self.level1w.levelright = self.level1
 148                 self.level1.leveltop = self.level1n
 149                 self.level1n.levelbottom = self.level1
 150
 151         def main_loop (self):
 152                 # main game loop
 153                 while 1:
 154                         self.clock.tick (25)
 155                         # clear screen
 156                         self.screen.fill (pygame.Color (0,0,0))
 157                         # draw the level
 158                         self.draw_level_background (self.currentlevel)
 159                         # draw level objects
 160                         self.draw_level_objects (self.currentlevel)
 161                         # draw the NPCs in the level
 162                         self.draw_level_npcs (self.currentlevel)
 163                         # draw our character
 164                         self.draw_butaba ()
 165                         # display the character's inventory
 166                         self.draw_inventory ()
 167                         # draw the status info
 168                         self.draw_status ()
 169                         # update the display
 170                         pygame.display.update ()
 171
 172                         # get keyboard events
 173                         for event in pygame.event.get ():
 174                                 if event.type == pygame.QUIT:
 175                                         sys.exit (0)
 176                                 # if keyboard event
 177                                 if event.type == pygame.KEYDOWN:
 178                                         if event.key == pygame.K_UP:
 179                                                 self.move_butaba_up ()
 180                                         elif event.key == pygame.K_DOWN:
 181                                                 self.move_butaba_down ()
 182                                         elif event.key == pygame.K_LEFT:
 183                                                 self.move_butaba_left ()
 184                                         elif event.key == pygame.K_RIGHT:
 185                                                 self.move_butaba_right ()
 186                                         # drinking health potion in inventory
 187                                         elif event.key == ord ("h") or event.key == ord ("H"):
 188                                                 self.inventory_drink_health_potion ()
 189                                         # quit the game
 190                                         elif event.key == ord ("q") or event.key == ord ("Q"):
 191                                                 sys.exit (0)
 192
 193         # drink a health potion if it is in the player's inventory
 194         def inventory_drink_health_potion (self):
 195                 # look for a health potion
 196                 for item in self.butaba.objects:
 197                         if isinstance (item, gameobjects.HealthPotion) is True:
 198                                 self.use_object (self.butaba, item)
 199                                 break
 200
 201         def move_butaba_up (self):
 202                 # clear any status messages
 203                 self.status_message = None
 204                 # first if butaba is not facing up, make him face up
 205                 if self.butaba.position <> constants.BACK:
 206                         self.butaba.position = constants.BACK
 207                         return
 208
 209                 # if butaba is trying to move off the top of the screen
 210                 if self.butaba.row <= 0:
 211                         # if there is a level above set current level to that one
 212                         if self.currentlevel.leveltop is not None:
 213                                 lastrow = len (self.currentlevel.leveltop.background) - 1
 214                                 # interact with objects
 215                                 if self.level_interact (self.currentlevel.leveltop, lastrow, self.butaba.col) is False:
 216                                         return
 217
 218                                 # make sure there is no obstacle
 219                                 if self.check_background_obstacle (self.currentlevel.leveltop, lastrow, self.butaba.col) is False:
 220                                         self.currentlevel = self.currentlevel.leveltop
 221                                         self.butaba.row = lastrow
 222                 # normal upward movement
 223                 else:
 224                         # if there is any object in that place interact with it
 225                         # if any object is a blocking object then avoid movement
 226                         if self.level_interact (self.currentlevel, self.butaba.row-1, self.butaba.col) is False:
 227                                 return
 228
 229                         if self.check_background_obstacle (self.currentlevel, self.butaba.row-1, self.butaba.col) is False:
 230                                 self.butaba.row -= 1
 231
 232         def move_butaba_down (self):
 233                 # clear any status messages
 234                 self.status_message = None
 235                 # first if butaba is not facing forward, make him face forward/down
 236                 if self.butaba.position <> constants.FRONT:
 237                         self.butaba.position = constants.FRONT
 238                         return
 239
 240                 # if butaba is trying to move off the bottom of the screen
 241                 if self.butaba.row >= len (self.currentlevel.background)-1:
 242                         # if there is a level below set current level to that one
 243                         if self.currentlevel.levelbottom is not None:
 244                                 # interact with objects if any
 245                                 # if any object is a blocking object then avoid movement
 246                                 if self.level_interact (self.currentlevel.levelbottom, 0, self.butaba.col) is False:
 247                                         return
 248                                 # make sure there is no obstacle at that position
 249                                 if self.check_background_obstacle (self.currentlevel.levelbottom, 0, self.butaba.col) is False:
 250                                         self.currentlevel = self.currentlevel.levelbottom
 251                                         self.butaba.row = 0
 252                 # normal downward movement
 253                 else:
 254                         # interact with objects if any
 255                         # if any object is a blocking object then avoid movement
 256                         if self.level_interact (self.currentlevel, self.butaba.row+1, self.butaba.col) is False:
 257                                 return
 258                         if self.check_background_obstacle (self.currentlevel, self.butaba.row+1, self.butaba.col) is False:
 259                                 self.butaba.row += 1
 260
 261         # check if a background tile is an obstacle
 262         def check_background_obstacle (self, level, row, col):
 263                 if (level.background[row][col][2] == 1):
 264                         return True
 265                 else:
 266                         return False
 267
 268         # get and interact with objects and characters if present in a particular row/col
 269         def level_interact (self, level, row, col):
 270                 objs = []
 271                 # get list of objects at current location
 272                 for obj in level.objects:
 273                         if obj.row == row and obj.col == col:
 274                                 objs.append (obj)
 275
 276                 notblock = self.interact_objects (level, objs)
 277
 278                 # get npc at current location
 279                 current_npc = None
 280                 for npc in level.npcs:
 281                         if npc.row == row and npc.col == col:
 282                                 current_npc = npc
 283                                 break
 284
 285                 # npcs always block the tile. So return false if there is an NPC
 286                 # at the location
 287                 if current_npc is not None:
 288                         self.interact_npc (current_npc)
 289                         return False
 290
 291                 return notblock
 292
 293         # interaction with npcs
 294         def interact_npc (self, npc):
 295                 # interact with NPC and get the response ID
 296                 # if the NPC is Bulisa
 297
 298                 # if the NPC is dead cannot talk with the NPC
 299                 if npc.is_dead is True:
 300                         self.status_message = "%s is dead! RIP..." % npc.charname
 301                         return
 302
 303                 if isinstance (npc, npcs.Bulisa):
 304                         # interact
 305                         self.interact_npc_bulisa (npc)
 306
 307         # interact with NPC Bulisa
 308         def interact_npc_bulisa (self, npc):
 309                 # set initial response ID to none
 310                 resp_id = None
 311                 # not yet started mission drawing water from well and not refused it
 312                 if (gamestate.mission_bulisa_water_from_well is False
 313                         and gamestate.mission_bulisa_water_from_well_refused is False):
 314                         # set the current dialogue
 315                         npc.currentdialog = 0
 316                         # get the response ID
 317                         resp_id = utility.dialogue_play (self.screen, self.img_dialogue, npc, self.butaba.portrait, 0, 90)
 318                 if (gamestate.mission_bulisa_water_from_well_refused is True and
 319                                 gamestate.mission_bulisa_water_from_well is False):
 320                         # set the current dialog
 321                         npc.currentdialog = 2
 322                         resp_id = utility.dialogue_play (self.screen, self.img_dialogue, npc, self.butaba.portrait, 0, 90)
 323                 # mission accepted but not completed - check if completed and set value
 324                 # accordingly
 325                 elif (gamestate.mission_bulisa_water_from_well is True
 326                         and gamestate.mission_bulisa_water_from_well_complete is False):
 327                         for invobj in self.butaba.objects:
 328                                 if isinstance (invobj, gameobjects.Bucket) is True:
 329                                         if invobj.liquid == "water":
 330                                                 gamestate.mission_bulisa_water_from_well_complete = True
 331                                                 self.butaba.objects.remove (invobj)
 332                                                 key1 = gameobjects.Key (5, 3, "a chest key", self.img_key2, constants.KEY_CHEST1)
 333                                                 self.butaba.objects.append (key1)
 334
 335                                                 break
 336                         # water mission is not completed yet
 337                         if gamestate.mission_bulisa_water_from_well_complete is False:
 338                                 npc.currentdialog = 1
 339                         else:
 340                                 npc.currentdialog = 3
 341
 342                         # get the response ID
 343                         resp_id = utility.dialogue_play (self.screen, self.img_dialogue, npc, self.butaba.portrait, 0, 90)
 344
 345                 # if response ID is 12, then drawing water from well mission is refused
 346                 if resp_id == "12" or resp_id == "18":
 347                         gamestate.mission_bulisa_water_from_well_refused = True
 348                 # if response ID is 13: that is accepted the drawing water from well mission begins
 349                 if resp_id == "13" or resp_id == "17":
 350                         gamestate.mission_bulisa_water_from_well = True
 351                 # if response ID is none
 352                 elif resp_id is None:
 353                         self.status_message = "You cannot initiate a conversation with %s" % npc.charname
 354
 355         # interaction with objects
 356         def interact_objects (self, container, objs):
 357                 # overall flag for blocking/non-blocking objects
 358                 notblock = True
 359
 360                 # now perform interaction
 361                 for obj in objs:
 362                         # run the object interact function
 363                         if obj.interact () is False:
 364                                 notblock = False
 365                         # if object can be picked up ask
 366                         if obj.can_pickup is True:
 367                                 ans = utility.ask_question (self.screen, "Found %s." % obj.text, ["Pick up", obj.use_str, "Ignore"], self.img_menu)
 368                                 # if the answer is "pick up"
 369                                 if ans == 1:
 370                                         self.pickup_object (container, obj)
 371                                 elif ans == 2:
 372                                         # use the object according to its type
 373                                         self.use_object (container, obj)
 374                         # if it cannot be picked up, try to use it anyway
 375                         else:
 376                                 ans = utility.ask_question (self.screen, "Found %s." % obj.text, [obj.use_str, "Ignore"], self.img_menu)
 377                                 if ans == 1:
 378                                         self.use_object (container, obj)
 379
 380                 return notblock
 381
 382         # transfer an object from one container to another
 383         # container must have an objects list
 384         def transfer_object (self, source, obj, dest):
 385                 # remove object from source
 386                 source.objects.remove (obj)
 387                 # add object to destination
 388                 dest.objects.append (obj)
 389
 390         # picking up an object
 391         def pickup_object (self, container, obj):
 392                 # only if object can be picked up, pick it up or use it
 393                 if obj.can_pickup is True:
 394                         # check if the inventory is full
 395                         if len (self.butaba.objects) >= constants.MAXITEMS:
 396                                 self.status_message = "Cannot pick up item. Inventory full"
 397                         else:
 398                                 # add item to inventory
 399                                 self.transfer_object (container, obj, self.butaba)
 400
 401                                 self.status_message = "You picked up %s" % obj.text
 402
 403         # this method uses the object first by calling the object use () method
 404         # and then performing specific actions as necessary
 405         def use_object (self, container, obj):
 406                 # if the object is a health potion
 407                 if isinstance (obj, gameobjects.HealthPotion) is True:
 408                         if self.butaba.health < constants.MAXHEALTH:
 409                                 obj.use (self.butaba)
 410                                 container.objects.remove (obj)
 411                                 self.status_message = "You gained health"
 412                         else:
 413                                 self.status_message = "You already have maximum health!"
 414                 # if the object is a chest
 415                 elif isinstance (obj, gameobjects.Chest) is True:
 416                         # if chest is locked, try to open it
 417                         if obj.locked is True:
 418                                 # try opening the chest with every item 9the use () function
 419                                 # of the chest determines if item is a key anyway
 420                                 fittedkey = None
 421                                 for invobj in self.butaba.objects:
 422                                         fittedkey = obj.use (invobj)
 423                                         # if a key fits
 424                                         if fittedkey is not None:
 425                                                 break
 426                                 # if no key found
 427                                 if fittedkey is None:
 428                                         self.status_message = "No key found to open %s" % obj.text
 429                                 # chest successfully unlocked
 430                                 else:
 431                                         self.status_message = "You unlocked the %s" % obj.text
 432                                         # remove the key from Butaba
 433                                         self.butaba.objects.remove (fittedkey)
 434                                         # add an experience point for unlocking chest subject
 435                                         # to a limit of KNOWLEDGEMAX_CHEST_UNLOCK
 436                                         if self.butaba.experience < constants.KNOWLEDGEMAX_CHEST_UNLOCK:
 437                                                 self.butaba.experience += 1
 438                                                 self.status_message += " and gained experience!"
 439                         # display the contents of the chest
 440                         else:
 441                                 item = utility.get_container_object (self.screen, obj, self.img_chestbg, 30)
 442                                 if item is not None:
 443                                         self.interact_objects (obj, [ item, ])
 444
 445                 # if the object is gold coins
 446                 elif isinstance (obj, gameobjects.GoldCoins) is True:
 447                         obj.use (self.butaba)
 448                         self.status_message = "You picked up %d gold." % obj.value
 449                         # remove the gold coins after adding it to Butaba's gold
 450                         container.objects.remove (obj)
 451                 # using a bucket means emptying it
 452                 elif isinstance (obj, gameobjects.Bucket) is True:
 453                         if obj.liquid is not None:
 454                                 self.status_message = "You emptied the bucket of %s" % obj.liquid
 455                                 obj.use (self.butaba)
 456                         else:
 457                                 self.status_message = "Bucket is already empty."
 458                 # using a well
 459                 elif isinstance (obj, gameobjects.Well) is True:
 460                         # if the well is not dry, i.e. it has some liquid
 461                         if obj.liquid is not None:
 462                                 # search butaba inventory for an empty bucket
 463                                 for invobj in self.butaba.objects:
 464                                         # bucket found, now check if it is empty
 465                                         if isinstance (invobj, gameobjects.Bucket) is True:
 466                                                 # if empty fill it
 467                                                 if invobj.liquid is None:
 468                                                         obj.use (invobj)
 469                                                         self.status_message = "You successfully filled the %s with %s" % (invobj.text, obj.liquid)
 470                                                         if self.butaba.strength < constants.STRENGTHMAX_DRAW_WELL_WATER:
 471                                                                 self.butaba.strength += 2
 472                                                                 self.status_message += " and gained strength!"
 473                                                         return
 474                                 self.status_message = "You have no empty bucket to draw %s with!" % obj.liquid
 475                         else:
 476                                 self.status_message = "%s appears to be dry!" % obj.text
 477
 478         def move_butaba_left (self):
 479                 # clear any status messages
 480                 self.status_message = None
 481
 482                 # first if Butaba is not facing left, make him face left
 483                 if self.butaba.position <> constants.LEFT:
 484                         self.butaba.position = constants.LEFT
 485                         return
 486
 487                 # if butaba is trying to move off the left edge
 488                 if self.butaba.col <= 0:
 489                         # if there is a level to the right set current level to that one
 490                         if self.currentlevel.levelleft is not None:
 491                                 # get the last column of the previous level
 492                                 lastcol = len (self.currentlevel.levelleft.background[0]) - 1
 493                                 # interact with objects if any
 494                                 # if any object is a blocking object then avoid movement
 495                                 if self.level_interact (self.currentlevel.levelleft, self.butaba.row, lastcol) is False:
 496                                         return
 497                                 # make sure there is no obstacle at that position of movement
 498                                 if self.check_background_obstacle (self.currentlevel.levelleft, self.butaba.row, lastcol) is False:
 499                                         self.currentlevel = self.currentlevel.levelleft
 500                                         self.butaba.col = lastcol
 501                 # normal left movement
 502                 else:
 503                         # interact with objects if any
 504                         # if any object is a blocking object then avoid movement
 505                         if self.level_interact (self.currentlevel, self.butaba.row, self.butaba.col-1) is False:
 506                                 return
 507                         if self.check_background_obstacle (self.currentlevel, self.butaba.row, self.butaba.col-1) is False:
 508                                 self.butaba.col -= 1
 509
 510         def move_butaba_right (self):
 511                 # clear any status messages
 512                 self.status_message = None
 513
 514                 # First if Butaba is not facing right make him face right
 515                 if self.butaba.position <> constants.RIGHT:
 516                         self.butaba.position = constants.RIGHT
 517                         return
 518
 519                 # if butaba is trying to move off the right edge
 520                 if self.butaba.col >= len (self.currentlevel.background[0])-1:
 521                         # if there is a level to the right swap current level with that one
 522                         if self.currentlevel.levelright is not None:
 523                                 # interact with objects if any
 524                                 # if any object is a blocking object then avoid movement
 525                                 if self.level_interact (self.currentlevel.levelright, self.butaba.row, 0) is False:
 526                                         return
 527
 528                                 # make sure there is no obstacle at that position of movement
 529                                 # get the last column of the previous level
 530                                 if self.check_background_obstacle (self.currentlevel.levelright, self.butaba.row, 0) is False:
 531                                         self.currentlevel = self.currentlevel.levelright
 532                                         self.butaba.col = 0
 533                 # normal right movement
 534                 else:
 535                         # interact with objects if any
 536                         # if any object is a blocking object then avoid moving
 537                         if self.level_interact (self.currentlevel, self.butaba.row, self.butaba.col + 1) is False:
 538                                 return
 539                         if self.check_background_obstacle (self.currentlevel, self.butaba.row, self.butaba.col + 1) is False:
 540                                 self.butaba.col += 1
 541
 542         def draw_butaba (self):
 543                 if self.butaba.position == constants.FRONT:
 544                         self.screen.blit (self.butaba.imagefront, (self.butaba.col*48, self.butaba.row*48))
 545                 elif self.butaba.position == constants.BACK:
 546                         self.screen.blit (self.butaba.imageback, (self.butaba.col*48, self.butaba.row*48))
 547                 elif self.butaba.position == constants.LEFT:
 548                         self.screen.blit (self.butaba.imageleft, (self.butaba.col*48, self.butaba.row*48))
 549                 elif self.butaba.position == constants.RIGHT:
 550                         self.screen.blit (self.butaba.imageright, (self.butaba.col*48, self.butaba.row*48))
 551
 552
 553         # Draw the status infodisplay
 554         def draw_status (self):
 555                 self.screen.blit (self.img_redpotion, (485, 10))
 556                 utility.put_text (self.screen, 550, 25, 20, (255, 0, 0), "%d" % self.butaba.health)
 557
 558                 self.screen.blit (self.img_lightning, (620, 10))
 559                 utility.put_text (self.screen, 660, 25, 20, (255,255,255), "%d" % self.butaba.strength)
 560
 561                 self.screen.blit (self.img_wand, (485, 65))
 562                 utility.put_text (self.screen, 550, 75, 20, (0, 0, 255), "%d" % self.butaba.magic)
 563
 564                 self.screen.blit (self.img_bulb, (620, 65))
 565                 utility.put_text (self.screen, 660, 75, 20, (0, 255, 0), "%d" % self.butaba.experience)
 566
 567                 self.screen.blit (self.img_goldcoins, (485, 110))
 568                 utility.put_text (self.screen, 550, 130, 20, (255, 255, 0), "%d" % self.butaba.gold)
 569
 570                 if self.status_message is not None:
 571                         utility.put_text (self.screen, 10, 485, 10, (255,255, 0), "%s" % self.status_message)
 572
 573         # display the inventory of the player
 574         def draw_inventory (self):
 575                 # draw the inventory slots
 576                 r = 1
 577                 c = 1
 578                 utility.put_text (self.screen, 490, 170, 16, (255,255 , 0), "Inventory")
 579                 for i in range (constants.MAXITEMS):
 580                         self.screen.blit (self.img_inventory, (440+c*54, 150+r*54))
 581                         if c % 4 == 0:
 582                                 r += 1
 583                                 c = 1
 584                         else:
 585                                 c += 1
 586
 587                 r = 1
 588                 c = 1
 589                 for obj in self.butaba.objects:
 590                         self.screen.blit (obj.image, (440+c*54+2, 150+r*54+2))
 591                         if c % 4 == 0:
 592                                 r += 1
 593                                 c = 1
 594                         else:
 595                                 c += 1
 596
 597         # Draw the level background tiles on surface
 598         def draw_level_background (self, level):
 599                 i = 0
 600                 for row in level.background:
 601                         j = 0
 602                         for tilerow, tilecol, is_solid in row:
 603                                 tilex = tilecol * 48
 604                                 tiley = tilerow * 48
 605                                 self.screen.blit (self.img_tileset, (j*48, i*48), pygame.Rect (tilex, tiley, 48, 48))
 606
 607                                 j += 1
 608                         i += 1
 609
 610         # Draw the level objects
 611         def draw_level_objects (self, level):
 612                 for obj in level.objects:
 613                         if obj.image is not None:
 614                                 self.screen.blit (obj.image, (obj.col*48, obj.row*48))
 615
 616
 617         # Draw the NPCs in the level
 618         def draw_level_npcs (self, level):
 619                 for npc in level.npcs:
 620                         # if npc is not dead then move the NPC randomly depending on their
 621                         # movement area
 622                         if npc.is_dead is False:
 623                                 # move this turn?
 624                                 if random.randint (1, 500) < npc.movement_speed:
 625                                         # whether to change direction?
 626                                         if random.randint (1, 100) < 25:
 627                                                 npc.position = random.randint (0, 3)
 628                                         else:
 629                                                 # if left movement
 630                                                 if npc.position == constants.LEFT:
 631                                                         # cannot move beyond level and cannot move beyond the
 632                                                         # left limit area
 633                                                         if npc.col > 0 and npc.col > npc.initcol - npc.leftlimit:
 634                                                                 # check if there is any background obstacle
 635                                                                 if self.check_background_obstacle (level, npc.row, npc.col - 1) is False:
 636                                                                         # check if there are any objects
 637                                                                         objblock = False
 638                                                                         npcblock = False
 639                                                                         for lobj in level.objects:
 640                                                                                 if lobj.row == npc.row and lobj.col == npc.col - 1:
 641                                                                                         objblock = True
 642                                                                                         break
 643                                                                         # check if there any any npcs blocking
 644                                                                         for lnpc in level.npcs:
 645                                                                                 if lnpc.row == npc.row and lnpc.col == npc.col - 1:
 646                                                                                         npcblock = True
 647                                                                                         break
 648                                                                         if objblock is False and npcblock is False:
 649                                                                                 # if butaba is not blocking
 650                                                                                 if self.butaba.row <> npc.row or self.butaba.col <> npc.col - 1:
 651                                                                                         npc.col -= 1
 652                                                 elif npc.position == constants.RIGHT:
 653                                                         # cannot move beyond level and cannot move beyond the
 654                                                         # right limit area
 655                                                         if npc.col < 9 and npc.col < npc.initcol + npc.rightlimit:
 656                                                                 # check if there is any background obstacle
 657                                                                 if self.check_background_obstacle (level, npc.row, npc.col + 1) is False:
 658                                                                         # check if there are any objects
 659                                                                         objblock = False
 660                                                                         npcblock = False
 661                                                                         for lobj in level.objects:
 662                                                                                 if lobj.row == npc.row and lobj.col == npc.col + 1:
 663                                                                                         objblock = True
 664                                                                                         break
 665                                                                         # check if there any any npcs blocking
 666                                                                         for lnpc in level.npcs:
 667                                                                                 if lnpc.row == npc.row and lnpc.col == npc.col + 1:
 668                                                                                         npcblock = True
 669                                                                                         break
 670                                                                         if objblock is False and npcblock is False:
 671                                                                                 # if butaba is not blocking
 672                                                                                 if self.butaba.row <> npc.row or self.butaba.col <> npc.col + 1:
 673                                                                                         npc.col += 1
 674                                                 elif npc.position == constants.FRONT:
 675                                                         # cannot move beyond level and cannot move beyond the
 676                                                         # lower bottom limit area
 677                                                         if npc.row < 9 and npc.row < npc.initrow + npc.bottomlimit:
 678                                                                 # check if there is any background obstacle
 679                                                                 if self.check_background_obstacle (level, npc.row + 1, npc.col) is False:
 680                                                                         # check if there are any objects
 681                                                                         objblock = False
 682                                                                         npcblock = False
 683                                                                         for lobj in level.objects:
 684                                                                                 if lobj.row == npc.row + 1 and lobj.col == npc.col:
 685                                                                                         objblock = True
 686                                                                                         break
 687                                                                         # check if there any any npcs blocking
 688                                                                         for lnpc in level.npcs:
 689                                                                                 if lnpc.row == npc.row + 1 and lnpc.col == npc.col:
 690                                                                                         npcblock = True
 691                                                                                         break
 692                                                                         if objblock is False and npcblock is False:
 693                                                                                 # if butaba is not blocking
 694                                                                                 if self.butaba.row <> npc.row + 1 or self.butaba.col <> npc.col:
 695                                                                                         npc.row += 1
 696                                                 elif npc.position == constants.BACK:
 697                                                         # cannot move beyond level and cannot move beyond the
 698                                                         # top upper limit area
 699                                                         if npc.row > 0 and npc.row > npc.initrow - npc.toplimit:
 700                                                                 # check if there is any background obstacle
 701                                                                 if self.check_background_obstacle (level, npc.row - 1, npc.col) is False:
 702                                                                         # check if there are any objects
 703                                                                         objblock = False
 704                                                                         npcblock = False
 705                                                                         for lobj in level.objects:
 706                                                                                 if lobj.row == npc.row - 1 and lobj.col == npc.col:
 707                                                                                         objblock = True
 708                                                                                         break
 709                                                                         # check if there any any npcs blocking
 710                                                                         for lnpc in level.npcs:
 711                                                                                 if lnpc.row == npc.row - 1 and lnpc.col == npc.col:
 712                                                                                         npcblock = True
 713                                                                                         break
 714                                                                         # if no object is blocking
 715                                                                         if objblock is False and npcblock is False:
 716                                                                                 # if butaba is not blocking
 717                                                                                 if self.butaba.row <> npc.row - 1 or self.butaba.col <> npc.col:
 718                                                                                         npc.row -= 1
 719
 720                         if npc.position == constants.FRONT:
 721                                 img = npc.imagefront
 722                         elif npc.position == constants.BACK:
 723                                 img = npc.imageback
 724                         elif npc.position == constants.LEFT:
 725                                 img = npc.imageleft
 726                         else:
 727                                 img = npc.imageright
 728
 729                         self.screen.blit (img, (npc.col*48, npc.row*48))