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
  14 class MainGame:
  15
  16         # initialize the game
  17         def __init__ (self):
  18                 pygame.init ()
  19                 self.screen  = pygame.display.set_mode ((720, 512))
  20                 pygame.display.set_caption ("The Adventures of Butaba")
  21
  22                 # initalize background graphics
  23                 self.img_tileset = pygame.image.load (os.path.join ("background", "tileset.png")).convert ()
  24
  25                 self.img_menu = pygame.image.load (os.path.join ("background", "menu_screen.png")).convert ()
  26
  27                 self.img_inventory = pygame.image.load (os.path.join ("background", "inventory.png")).convert ()
  28
  29                 self.img_chestbg = pygame.image.load (os.path.join ("background", "chestcontent.png")).convert ()
  30
  31                 self.img_dialogue = pygame.image.load (os.path.join ("background", "dialog_screen.png")).convert ()
  32                 self.img_dialogue.set_colorkey (pygame.Color (0, 255, 0))
  33
  34
  35                 # initialize object graphics
  36                 self.img_redpotion = pygame.image.load (os.path.join ("objects", "red-potion.png")).convert ()
  37                 self.img_redpotion.set_colorkey (pygame.Color (0, 255, 0))
  38                 self.img_goldcoins = pygame.image.load (os.path.join ("objects", "gold-coins.png")).convert ()
  39                 self.img_goldcoins.set_colorkey (pygame.Color (0, 255, 0))
  40                 self.img_wand = pygame.image.load (os.path.join ("objects", "wand.png")).convert ()
  41                 self.img_wand.set_colorkey (pygame.Color (0, 255, 0))
  42                 self.img_bulb = pygame.image.load (os.path.join ("objects", "bulb.png")).convert ()
  43                 self.img_bulb.set_colorkey (pygame.Color (0, 255, 0))
  44                 self.img_lightning = pygame.image.load (os.path.join ("objects", "lightning.png")).convert ()
  45                 self.img_lightning.set_colorkey (pygame.Color (0, 255, 0))
  46                 self.img_key = pygame.image.load (os.path.join ("objects", "key.png")).convert ()
  47                 self.img_key.set_colorkey (pygame.Color (0, 255, 0))
  48                 self.img_key2 = pygame.image.load (os.path.join ("objects", "key2.png")).convert ()
  49                 self.img_key2.set_colorkey (pygame.Color (0, 255, 0))
  50                 self.img_chest = pygame.image.load (os.path.join ("objects", "chest.png")).convert ()
  51                 self.img_chest.set_colorkey (pygame.Color (0, 255, 0))
  52
  53                 # initialize player graphics
  54                 self.img_butabafront = pygame.image.load (os.path.join ("sprite", "butaba-front.png")).convert ()
  55                 self.img_butabafront.set_colorkey (pygame.Color (0, 255, 0))
  56                 self.img_butababack = pygame.image.load (os.path.join ("sprite", "butaba-back.png")).convert ()
  57                 self.img_butababack.set_colorkey (pygame.Color (0, 255, 0))
  58                 self.img_butabaleft = pygame.image.load (os.path.join ("sprite", "butaba-left.png")).convert ()
  59                 self.img_butabaleft.set_colorkey (pygame.Color (0, 255, 0))
  60                 self.img_butabaright = pygame.image.load (os.path.join ("sprite", "butaba-right.png")).convert ()
  61                 self.img_butabaright.set_colorkey (pygame.Color (0, 255, 0))
  62
  63                 # initialize NPC graphics
  64                 self.img_bulisa = pygame.image.load (os.path.join ("sprite", "bulisa.png")).convert ()
  65                 self.img_bulisa.set_colorkey (pygame.Color (0, 255, 0))
  66
  67                 # initialize portraits
  68                 self.img_butaba_portrait = pygame.image.load (os.path.join ("portraits", "butaba.png")).convert ()
  69                 self.img_bulisa_portrait = pygame.image.load (os.path.join ("portraits", "bulisa.png")).convert ()
  70
  71                 # set level data
  72                 self.setup_levels ()
  73                 # set current level and position of our character
  74                 self.currentlevel = self.level1
  75
  76                 # set the status message
  77                 self.status_message = "Game started"
  78
  79                 self.butaba = butaba.Butaba (5,0, butaba.Butaba.RIGHT)
  80
  81         # set up the levels and their interactions
  82         def setup_levels (self):
  83                 # set up the objects first
  84                 chest1 = gameobjects.Chest (2, 6, "chest", self.img_chest, constants.KEY_CHEST1, True)
  85                 chest2 = gameobjects.Chest (6, 6, "chest", self.img_chest, constants.KEY_CHEST2, True)
  86                 key1 = gameobjects.Key (5, 3, "a chest key", self.img_key2, constants.KEY_CHEST1)
  87                 key2 =  gameobjects.Key (5, 3, "a chest key", self.img_key, constants.KEY_CHEST2)
  88                 potion = gameobjects.HealthPotion (5, 2, self.img_redpotion)
  89                 gold50 = gameobjects.GoldCoins (6, 2, self.img_goldcoins, 50)
  90                 gold25 = gameobjects.GoldCoins (6, 2, self.img_goldcoins, 25)
  91                 gold10 = gameobjects.GoldCoins (6, 2, self.img_goldcoins, 10)
  92                 potion2 = gameobjects.HealthPotion (5, 2, self.img_redpotion)
  93                 potion3 = gameobjects.HealthPotion (5, 2, self.img_redpotion)
  94
  95                 npc_bulisa = npcs.Bulisa (4, 3, self.img_bulisa, self.img_bulisa_portrait,
  96                                                                                 [ os.path.join ("dialogues", "bulisa1.dlg") ])
  97
  98                 chest1.objects = [ gold50, gold25, potion2, potion3, key2, gold10 ]
  99
 100                 # create the levels
 101                 self.level1 = level.Level (cPickle.load (file ("levels/level1.dat")),
 102                                 objects = [ chest1 ] )
 103
 104                 self.level1w = level.Level (cPickle.load (file ("levels/level1w.dat")))
 105
 106                 self.level1e = level.Level (cPickle.load (file ("levels/level1e.dat")),
 107                                 objects = [ key1, potion, chest2 ], npcs = [ npc_bulisa ])
 108
 109                 # set up the interaction between levels
 110                 self.level1.levelright = self.level1e
 111                 self.level1.levelleft = self.level1w
 112                 self.level1e.levelleft = self.level1
 113                 self.level1w.levelright = self.level1
 114
 115         def main_loop (self):
 116                 # main game loop
 117                 while 1:
 118                         # clear screen
 119                         self.screen.fill (pygame.Color (0,0,0))
 120                         # draw the level
 121                         self.draw_level_background (self.currentlevel)
 122                         # draw level objects
 123                         self.draw_level_objects (self.currentlevel)
 124                         # draw the NPCs in the level
 125                         self.draw_level_npcs (self.currentlevel)
 126                         # draw our character
 127                         self.draw_butaba ()
 128                         # display the character's inventory
 129                         self.draw_inventory ()
 130                         # draw the status info
 131                         self.draw_status ()
 132                         # update the display
 133                         pygame.display.update ()
 134
 135                         # get keyboard events
 136                         for event in pygame.event.get ():
 137                                 if event.type == pygame.QUIT:
 138                                         sys.exit (0)
 139                                 # if keyboard event
 140                                 if event.type == pygame.KEYDOWN:
 141                                         if event.key == pygame.K_UP:
 142                                                 self.move_butaba_up ()
 143                                         elif event.key == pygame.K_DOWN:
 144                                                 self.move_butaba_down ()
 145                                         elif event.key == pygame.K_LEFT:
 146                                                 self.move_butaba_left ()
 147                                         elif event.key == pygame.K_RIGHT:
 148                                                 self.move_butaba_right ()
 149                                         # drinking health potion in inventory
 150                                         elif event.key == ord ("h") or event.key == ord ("H"):
 151                                                 self.inventory_drink_health_potion ()
 152                                         # quit the game
 153                                         elif event.key == ord ("q") or event.key == ord ("Q"):
 154                                                 sys.exit (0)
 155
 156         # drink a health potion if it is in the player's inventory
 157         def inventory_drink_health_potion (self):
 158                 # look for a health potion
 159                 for item in self.butaba.objects:
 160                         if isinstance (item, gameobjects.HealthPotion) is True:
 161                                 self.use_object (self.butaba, item)
 162                                 break
 163
 164         def move_butaba_up (self):
 165                 # clear any status messages
 166                 self.status_message = None
 167                 # first if butaba is not facing up, make him face up
 168                 if self.butaba.position <> butaba.Butaba.BACK:
 169                         self.butaba.position = butaba.Butaba.BACK
 170                         return
 171
 172                 # if butaba is trying to move off the top of the screen
 173                 if self.butaba.row <= 0:
 174                         # if there is a level above set current level to that one
 175                         if self.currentlevel.leveltop is not None:
 176                                 lastrow = len (self.currentlevel.leveltop.background) - 1
 177                                 # interact with objects
 178                                 if self.level_interact (self.currentlevel.leveltop, lastrow, self.butaba.col) is False:
 179                                         return
 180
 181                                 # make sure there is no obstacle
 182                                 if self.check_background_obstacle (self.currentlevel.leveltop, lastrow, self.butaba.col) is False:
 183                                         self.currentlevel = self.currentlevel.leveltop
 184                                         self.butaba.row = lastrow
 185                 # normal upward movement
 186                 else:
 187                         # if there is any object in that place interact with it
 188                         # if any object is a blocking object then avoid movement
 189                         if self.level_interact (self.currentlevel, self.butaba.row-1, self.butaba.col) is False:
 190                                 return
 191
 192                         if self.check_background_obstacle (self.currentlevel, self.butaba.row-1, self.butaba.col) is False:
 193                                 self.butaba.row -= 1
 194
 195         def move_butaba_down (self):
 196                 # clear any status messages
 197                 self.status_message = None
 198                 # first if butaba is not facing forward, make him face forward/down
 199                 if self.butaba.position <> butaba.Butaba.FRONT:
 200                         self.butaba.position = butaba.Butaba.FRONT
 201                         return
 202
 203                 # if butaba is trying to move off the bottom of the screen
 204                 if self.butaba.row >= len (self.currentlevel.background)-1:
 205                         # if there is a level below set current level to that one
 206                         if self.currentlevel.levelbottom is not None:
 207                                 # interact with objects if any
 208                                 # if any object is a blocking object then avoid movement
 209                                 if self.level_interact (self.currentlevel.levelbottom, 0, self.butaba.col) is False:
 210                                         return
 211                                 # make sure there is no obstacle at that position
 212                                 if self.check_background_obstacle (self.currentlevel.levelbottom, 0, self.butaba.col) is False:
 213                                         self.currentlevel = self.currentlevel.levelbottom
 214                                         self.butaba.row = 0
 215                 # normal downward movement
 216                 else:
 217                         # interact with objects if any
 218                         # if any object is a blocking object then avoid movement
 219                         if self.level_interact (self.currentlevel, self.butaba.row+1, self.butaba.col) is False:
 220                                 return
 221                         if self.check_background_obstacle (self.currentlevel, self.butaba.row+1, self.butaba.col) is False:
 222                                 self.butaba.row += 1
 223
 224         # check if a background tile is an obstacle
 225         def check_background_obstacle (self, level, row, col):
 226                 if (level.background[row][col][2] == 1):
 227                         return True
 228                 else:
 229                         return False
 230
 231         # get and interact with objects and characters if present in a particular row/col
 232         def level_interact (self, level, row, col):
 233                 objs = []
 234                 # get list of objects at current location
 235                 for obj in level.objects:
 236                         if obj.row == row and obj.col == col:
 237                                 objs.append (obj)
 238
 239                 notblock = self.interact_objects (level, objs)
 240
 241                 # get npc at current location
 242                 current_npc = None
 243                 for npc in level.npcs:
 244                         if npc.row == row and npc.col == col:
 245                                 current_npc = npc
 246                                 break
 247
 248                 # npcs always block the tile. So return false if there is an NPC
 249                 # at the location
 250                 if current_npc is not None:
 251                         self.interact_npc (current_npc)
 252                         return False
 253
 254                 return notblock
 255
 256         # interaction with npcs
 257         def interact_npc (self, npc):
 258                 # interact with NPC and get the response ID
 259                 resp_id = utility.dialogue_play (self.screen, self.img_dialogue, npc, self.img_butaba_portrait, 0, 90)
 260
 261                 # if none
 262                 if resp_id is None:
 263                         self.status_message = "You cannot initiate a conversation with %s" % npc.charname
 264
 265         # interaction with objects
 266         def interact_objects (self, container, objs):
 267                 # overall flag for blocking/non-blocking objects
 268                 notblock = True
 269
 270                 # now perform interaction
 271                 for obj in objs:
 272                         # run the object interact function
 273                         if obj.interact () is False:
 274                                 notblock = False
 275                         # if object can be picked up ask
 276                         if obj.can_pickup is True:
 277                                 ans = utility.ask_question (self.screen, "Found %s." % obj.text, ["Pick up", obj.use_str, "Ignore"], self.img_menu)
 278                                 # if the answer is "pick up"
 279                                 if ans == 1:
 280                                         self.pickup_object (container, obj)
 281                                 elif ans == 2:
 282                                         # use the object according to its type
 283                                         self.use_object (container, obj)
 284                         # if it cannot be picked up, try to use it anyway
 285                         else:
 286                                 ans = utility.ask_question (self.screen, "Found %s." % obj.text, [obj.use_str, "Ignore"], self.img_menu)
 287                                 if ans == 1:
 288                                         self.use_object (container, obj)
 289
 290                 return notblock
 291
 292         # transfer an object from one container to another
 293         # container must have an objects list
 294         def transfer_object (self, source, obj, dest):
 295                 # remove object from source
 296                 source.objects.remove (obj)
 297                 # add object to destination
 298                 dest.objects.append (obj)
 299
 300         # picking up an object
 301         def pickup_object (self, container, obj):
 302                 # only if object can be picked up, pick it up or use it
 303                 if obj.can_pickup is True:
 304                         # check if the inventory is full
 305                         if len (self.butaba.objects) >= butaba.Butaba.MAXITEMS:
 306                                 self.status_message = "Cannot pick up item. Inventory full"
 307                         else:
 308                                 # add item to inventory
 309                                 self.transfer_object (container, obj, self.butaba)
 310
 311                                 self.status_message = "You picked up %s" % obj.text
 312
 313         # this method uses the object first by calling the object use () method
 314         # and then performing specific actions as necessary
 315         def use_object (self, container, obj):
 316                 # if the object is a health potion
 317                 if isinstance (obj, gameobjects.HealthPotion) is True:
 318                         if self.butaba.health < butaba.Butaba.MAXHEALTH:
 319                                 obj.use (self.butaba)
 320                                 container.objects.remove (obj)
 321                                 self.status_message = "You gained health"
 322                         else:
 323                                 self.status_message = "You already have maximum health!"
 324                 # if the object is a chest
 325                 elif isinstance (obj, gameobjects.Chest) is True:
 326                         # if chest is locked, try to open it
 327                         if obj.locked is True:
 328                                 # try opening the chest with every item 9the use () function
 329                                 # of the chest determines if item is a key anyway
 330                                 fittedkey = None
 331                                 for invobj in self.butaba.objects:
 332                                         fittedkey = obj.use (invobj)
 333                                         # if a key fits
 334                                         if fittedkey is not None:
 335                                                 break
 336                                 # if no key found
 337                                 if fittedkey is None:
 338                                         self.status_message = "No key found to open %s" % obj.text
 339                                 # chest successfully unlocked
 340                                 else:
 341                                         self.status_message = "You unlocked the %s" % obj.text
 342                                         # remove the key from Butaba
 343                                         self.butaba.objects.remove (fittedkey)
 344                                         # add an experience point for unlocking chest subject
 345                                         # to a limit of KNOWLEDGEMAX_CHEST_UNLOCK
 346                                         if self.butaba.experience < constants.KNOWLEDGEMAX_CHEST_UNLOCK:
 347                                                 self.butaba.experience += 1
 348                                                 self.status_message += " and gained experience!"
 349                         # display the contents of the chest
 350                         else:
 351                                 item = utility.get_container_object (self.screen, obj, self.img_chestbg, 30)
 352                                 if item is not None:
 353                                         self.interact_objects (obj, [ item, ])
 354
 355                 # if the object is gold coins
 356                 elif isinstance (obj, gameobjects.GoldCoins) is True:
 357                         obj.use (self.butaba)
 358                         self.status_message = "You picked up %d gold." % obj.value
 359                         # remove the gold coins after adding it to Butaba's gold
 360                         container.objects.remove (obj)
 361
 362         def move_butaba_left (self):
 363                 # clear any status messages
 364                 self.status_message = None
 365
 366                 # first if Butaba is not facing left, make him face left
 367                 if self.butaba.position <> butaba.Butaba.LEFT:
 368                         self.butaba.position = butaba.Butaba.LEFT
 369                         return
 370
 371                 # if butaba is trying to move off the left edge
 372                 if self.butaba.col <= 0:
 373                         # if there is a level to the right set current level to that one
 374                         if self.currentlevel.levelleft is not None:
 375                                 # get the last column of the previous level
 376                                 lastcol = len (self.currentlevel.levelleft.background[0]) - 1
 377                                 # interact with objects if any
 378                                 # if any object is a blocking object then avoid movement
 379                                 if self.level_interact (self.currentlevel.levelleft, self.butaba.row, lastcol) is False:
 380                                         return
 381                                 # make sure there is no obstacle at that position of movement
 382                                 if self.check_background_obstacle (self.currentlevel.levelleft, self.butaba.row, lastcol) is False:
 383                                         self.currentlevel = self.currentlevel.levelleft
 384                                         self.butaba.col = lastcol
 385                 # normal left movement
 386                 else:
 387                         # interact with objects if any
 388                         # if any object is a blocking object then avoid movement
 389                         if self.level_interact (self.currentlevel, self.butaba.row, self.butaba.col-1) is False:
 390                                 return
 391                         if self.check_background_obstacle (self.currentlevel, self.butaba.row, self.butaba.col-1) is False:
 392                                 self.butaba.col -= 1
 393
 394         def move_butaba_right (self):
 395                 # clear any status messages
 396                 self.status_message = None
 397
 398                 # First if Butaba is not facing right make him face right
 399                 if self.butaba.position <> butaba.Butaba.RIGHT:
 400                         self.butaba.position = butaba.Butaba.RIGHT
 401                         return
 402
 403                 # if butaba is trying to move off the right edge
 404                 if self.butaba.col >= len (self.currentlevel.background[0])-1:
 405                         # if there is a level to the right swap current level with that one
 406                         if self.currentlevel.levelright is not None:
 407                                 # interact with objects if any
 408                                 # if any object is a blocking object then avoid movement
 409                                 if self.level_interact (self.currentlevel.levelright, self.butaba.row, 0) is False:
 410                                         return
 411
 412                                 # make sure there is no obstacle at that position of movement
 413                                 # get the last column of the previous level
 414                                 if self.check_background_obstacle (self.currentlevel.levelright, self.butaba.row, 0) is False:
 415                                         self.currentlevel = self.currentlevel.levelright
 416                                         self.butaba.col = 0
 417                 # normal right movement
 418                 else:
 419                         # interact with objects if any
 420                         # if any object is a blocking object then avoid moving
 421                         if self.level_interact (self.currentlevel, self.butaba.row, self.butaba.col + 1) is False:
 422                                 return
 423                         if self.check_background_obstacle (self.currentlevel, self.butaba.row, self.butaba.col + 1) is False:
 424                                 self.butaba.col += 1
 425
 426         def draw_butaba (self):
 427                 if self.butaba.position == butaba.Butaba.FRONT:
 428                         self.screen.blit (self.img_butabafront, (self.butaba.col*48, self.butaba.row*48))
 429                 elif self.butaba.position == butaba.Butaba.BACK:
 430                         self.screen.blit (self.img_butababack, (self.butaba.col*48, self.butaba.row*48))
 431                 elif self.butaba.position == butaba.Butaba.LEFT:
 432                         self.screen.blit (self.img_butabaleft, (self.butaba.col*48, self.butaba.row*48))
 433                 elif self.butaba.position == butaba.Butaba.RIGHT:
 434                         self.screen.blit (self.img_butabaright, (self.butaba.col*48, self.butaba.row*48))
 435
 436
 437         # Draw the status infodisplay
 438         def draw_status (self):
 439                 self.screen.blit (self.img_redpotion, (485, 10))
 440                 utility.put_text (self.screen, 550, 25, 20, (255, 0, 0), "%d" % self.butaba.health)
 441
 442                 self.screen.blit (self.img_lightning, (620, 10))
 443                 utility.put_text (self.screen, 660, 25, 20, (255,255,255), "%d" % self.butaba.strength)
 444
 445                 self.screen.blit (self.img_wand, (485, 65))
 446                 utility.put_text (self.screen, 550, 75, 20, (0, 0, 255), "%d" % self.butaba.magic)
 447
 448                 self.screen.blit (self.img_bulb, (620, 65))
 449                 utility.put_text (self.screen, 660, 75, 20, (0, 255, 0), "%d" % self.butaba.experience)
 450
 451                 self.screen.blit (self.img_goldcoins, (485, 110))
 452                 utility.put_text (self.screen, 550, 130, 20, (255, 255, 0), "%d" % self.butaba.gold)
 453
 454                 if self.status_message is not None:
 455                         utility.put_text (self.screen, 10, 485, 10, (255,255, 0), "%s" % self.status_message)
 456
 457         # display the inventory of the player
 458         def draw_inventory (self):
 459                 # draw the inventory slots
 460                 r = 1
 461                 c = 1
 462                 utility.put_text (self.screen, 490, 170, 16, (255,255 , 0), "Inventory")
 463                 for i in range (butaba.Butaba.MAXITEMS):
 464                         self.screen.blit (self.img_inventory, (440+c*54, 150+r*54))
 465                         if c % 4 == 0:
 466                                 r += 1
 467                                 c = 1
 468                         else:
 469                                 c += 1
 470
 471                 r = 1
 472                 c = 1
 473                 for obj in self.butaba.objects:
 474                         self.screen.blit (obj.image, (440+c*54+2, 150+r*54+2))
 475                         if c % 4 == 0:
 476                                 r += 1
 477                                 c = 1
 478                         else:
 479                                 c += 1
 480
 481         # Draw the level background tiles on surface
 482         def draw_level_background (self, level):
 483                 i = 0
 484                 for row in level.background:
 485                         j = 0
 486                         for tilerow, tilecol, is_solid in row:
 487                                 tilex = tilecol * 48
 488                                 tiley = tilerow * 48
 489                                 self.screen.blit (self.img_tileset, (j*48, i*48), pygame.Rect (tilex, tiley, 48, 48))
 490
 491                                 j += 1
 492                         i += 1
 493
 494         # Draw the level objects
 495         def draw_level_objects (self, level):
 496                 for obj in level.objects:
 497                         if obj.image is not None:
 498                                 self.screen.blit (obj.image, (obj.col*48, obj.row*48))
 499
 500
 501         # Draw the NPCs in the level
 502         def draw_level_npcs (self, level):
 503                 for npc in level.npcs:
 504                         if npc.image is not None:
 505                                 self.screen.blit (npc.image, (npc.col*48, npc.row*48))