maingame.py

   1 import pygame
   2 import sys
   3 import random
   4 import os.path
   5
   6 import level
   7 import butaba
   8 import utility
   9 import gameobjects
  10
  11 class MainGame:
  12
  13         # initialize the game
  14         def __init__ (self):
  15                 pygame.init ()
  16                 self.screen  = pygame.display.set_mode ((720, 512))
  17                 pygame.display.set_caption ("The Adventures of Butaba")
  18
  19                 # initalize background graphics
  20                 self.img_tileset = pygame.image.load (os.path.join ("background", "tileset.png")).convert ()
  21
  22                 self.img_menu = pygame.image.load (os.path.join ("background", "menu_screen.png")).convert ()
  23
  24                 self.img_inventory = pygame.image.load (os.path.join ("background", "inventory.png")).convert ()
  25
  26
  27                 # initialize object graphics
  28                 self.img_redpotion = pygame.image.load (os.path.join ("objects", "red-potion.png")).convert ()
  29                 self.img_redpotion.set_colorkey (pygame.Color (0, 255, 0))
  30                 self.img_goldcoins = pygame.image.load (os.path.join ("objects", "gold-coins.png")).convert ()
  31                 self.img_goldcoins.set_colorkey (pygame.Color (0, 255, 0))
  32                 self.img_wand = pygame.image.load (os.path.join ("objects", "wand.png")).convert ()
  33                 self.img_wand.set_colorkey (pygame.Color (0, 255, 0))
  34                 self.img_bulb = pygame.image.load (os.path.join ("objects", "bulb.png")).convert ()
  35                 self.img_bulb.set_colorkey (pygame.Color (0, 255, 0))
  36                 self.img_lightning = pygame.image.load (os.path.join ("objects", "lightning.png")).convert ()
  37                 self.img_lightning.set_colorkey (pygame.Color (0, 255, 0))
  38                 self.img_key = pygame.image.load (os.path.join ("objects", "key.png")).convert ()
  39                 self.img_key.set_colorkey (pygame.Color (0, 255, 0))
  40                 self.img_key2 = pygame.image.load (os.path.join ("objects", "key2.png")).convert ()
  41                 self.img_key2.set_colorkey (pygame.Color (0, 255, 0))
  42                 self.img_chest = pygame.image.load (os.path.join ("objects", "chest.png")).convert ()
  43                 self.img_chest.set_colorkey (pygame.Color (0, 255, 0))
  44
  45                 # initialize player graphics
  46                 self.img_butabafront = pygame.image.load (os.path.join ("sprite", "butaba-front.png")).convert ()
  47                 self.img_butabafront.set_colorkey (pygame.Color (0, 255, 0))
  48                 self.img_butababack = pygame.image.load (os.path.join ("sprite", "butaba-back.png")).convert ()
  49                 self.img_butababack.set_colorkey (pygame.Color (0, 255, 0))
  50                 self.img_butabaleft = pygame.image.load (os.path.join ("sprite", "butaba-left.png")).convert ()
  51                 self.img_butabaleft.set_colorkey (pygame.Color (0, 255, 0))
  52                 self.img_butabaright = pygame.image.load (os.path.join ("sprite", "butaba-right.png")).convert ()
  53                 self.img_butabaright.set_colorkey (pygame.Color (0, 255, 0))
  54
  55                 # set level data
  56                 self.setup_levels ()
  57                 # set current level and position of our character
  58                 self.currentlevel = self.level1
  59
  60                 # set the status message
  61                 self.status_message = "Game started"
  62
  63                 self.butaba = butaba.Butaba (5,0, butaba.Butaba.RIGHT, 75)
  64
  65         # set up the levels and their interactions
  66         def setup_levels (self):
  67
  68                 self.level1 = level.Level (level.LEVEL_1)
  69                 self.level1e = level.Level (level.LEVEL_1E,
  70                                                                         objects = [ gameobjects.Key (4, 3, "a chest key", self.img_key2, level.KEY_CHEST1),
  71                                                                                                 gameobjects.Key (4, 3, "a room key", self.img_key, level.KEY_ROOM1),
  72                                                                                                 gameobjects.HealthPotion (4, 2, self.img_redpotion),
  73                                                                                                 gameobjects.Chest (2, 5, "chest", self.img_chest, level.KEY_CHEST1, True),
  74                                                                                                 gameobjects.GoldCoins (5, 2, self.img_goldcoins, 50)
  75                                                                                         ]
  76                                                                                         )
  77                 self.level1.levelright = self.level1e
  78                 self.level1e.levelleft = self.level1
  79
  80         def main_loop (self):
  81                 # main game loop
  82                 while 1:
  83                         # clear screen
  84                         self.screen.fill (pygame.Color (0,0,0))
  85                         # draw the level
  86                         self.draw_level_background (self.currentlevel)
  87                         # draw level objects
  88                         self.draw_level_objects (self.currentlevel)
  89                         # draw our character
  90                         self.draw_butaba ()
  91                         # display the character's inventory
  92                         self.draw_inventory ()
  93                         # draw the status info
  94                         self.draw_status ()
  95                         # update the display
  96                         pygame.display.update ()
  97
  98                         # get keyboard events
  99                         for event in pygame.event.get ():
 100                                 if event.type == pygame.QUIT:
 101                                         sys.exit (0)
 102                                 # if keyboard event
 103                                 if event.type == pygame.KEYDOWN:
 104                                         if event.key == pygame.K_UP:
 105                                                 self.move_butaba_up ()
 106                                         elif event.key == pygame.K_DOWN:
 107                                                 self.move_butaba_down ()
 108                                         elif event.key == pygame.K_LEFT:
 109                                                 self.move_butaba_left ()
 110                                         elif event.key == pygame.K_RIGHT:
 111                                                 self.move_butaba_right ()
 112                                         # drinking health potion in inventory
 113                                         elif event.key == ord ("h") or event.key == ord ("H"):
 114                                                 self.inventory_drink_health_potion ()
 115                                         # quit the game
 116                                         elif event.key == ord ("q") or event.key == ord ("Q"):
 117                                                 sys.exit (0)
 118
 119         # drink a health potion if it is in the player's inventory
 120         def inventory_drink_health_potion (self):
 121                 # if health is maxed out then ignore
 122                 if self.butaba.health == butaba.Butaba.MAXHEALTH:
 123                         self.status_message = "You already have maximum health."
 124                 else:
 125                         # look for a health potion
 126                         for item in self.butaba.inventory:
 127                                 if isinstance (item, gameobjects.HealthPotion) is True:
 128                                         self.use_object (item)
 129                                         break
 130
 131         def move_butaba_up (self):
 132                 # clear any status messages
 133                 self.status_message = None
 134                 # first if butaba is not facing up, make him face up
 135                 if self.butaba.position <> butaba.Butaba.BACK:
 136                         self.butaba.position = butaba.Butaba.BACK
 137                         return
 138
 139                 # if butaba is trying to move off the top of the screen
 140                 if self.butaba.row <= 0:
 141                         # if there is a level above set current level to that one
 142                         if self.currentlevel.leveltop is not None:
 143                                 lastrow = len (self.currentlevel.leveltop.background) - 1
 144                                 # if there is any object in that place interact with it
 145                                 # if any object is a blocking object then avoid movement
 146                                 if self.interact_objects (self.currentlevel.leveltop, lastrow, self.butaba.col) is False:
 147                                         return
 148
 149                                 # make sure there is no obstacle
 150                                 if self.check_background_obstacle (self.currentlevel.leveltop, lastrow, self.butaba.col) is False:
 151                                         self.currentlevel = self.currentlevel.leveltop
 152                                         self.butaba.row = lastrow
 153                 # normal upward movement
 154                 else:
 155                         # if there is any object in that place interact with it
 156                         # if any object is a blocking object then avoid movement
 157                         if self.interact_objects (self.currentlevel, self.butaba.row-1, self.butaba.col) is False:
 158                                 return
 159
 160                         if self.check_background_obstacle (self.currentlevel, self.butaba.row-1, self.butaba.col) is False:
 161                                 self.butaba.row -= 1
 162
 163         def move_butaba_down (self):
 164                 # clear any status messages
 165                 self.status_message = None
 166                 # first if butaba is not facing forward, make him face forward/down
 167                 if self.butaba.position <> butaba.Butaba.FRONT:
 168                         self.butaba.position = butaba.Butaba.FRONT
 169                         return
 170
 171                 # if butaba is trying to move off the bottom of the screen
 172                 if self.butaba.row >= len (self.currentlevel.background)-1:
 173                         # if there is a level below set current level to that one
 174                         if self.currentlevel.levelbottom is not None:
 175                                 # interact with objects if any
 176                                 # if any object is a blocking object then avoid movement
 177                                 if self.interact_objects (self.currentlevel.levelbottom, 0, self.butaba.col) is False:
 178                                         return
 179                                 # make sure there is no obstacle at that position
 180                                 if self.check_background_obstacle (self.currentlevel.levelbottom, 0, self.butaba.col) is False:
 181                                         self.currentlevel = self.currentlevel.levelbottom
 182                                         self.butaba.row = 0
 183                 # normal downward movement
 184                 else:
 185                         # interact with objects if any
 186                         # if any object is a blocking object then avoid movement
 187                         if self.interact_objects (self.currentlevel, self.butaba.row+1, self.butaba.col) is False:
 188                                 return
 189                         if self.check_background_obstacle (self.currentlevel, self.butaba.row+1, self.butaba.col) is False:
 190                                 self.butaba.row += 1
 191
 192         # check if a background tile is an obstacle
 193         def check_background_obstacle (self, level, row, col):
 194                 if (level.background[row][col][2] == 1):
 195                         return True
 196                 else:
 197                         return False
 198
 199         # get and interact with objects if present in a particular row/col
 200         def interact_objects (self, level, row, col):
 201                 objs = []
 202                 # get list of objects at current location
 203                 for obj in level.objects:
 204                         if obj.row == row and obj.col == col:
 205                                 objs.append (obj)
 206
 207                 # overall flag for blocking/non-blocking objects
 208                 notblock = True
 209                 # now perform interaction
 210                 for obj in objs:
 211                         # run the object interact function
 212                         if obj.interact () is False:
 213                                 notblock = False
 214                         # if object can be picked up ask
 215                         self.pickup_object (obj)
 216
 217                 return notblock
 218
 219         # picking up an object
 220         def pickup_object (self, obj):
 221                 # only if object can be picked up, pick it up or use it
 222                 if obj.can_pickup is True:
 223                         ans = utility.ask_question (self.screen, "Found %s." % obj.text, ["Pick up", "Use", "Ignore"], self.img_menu)
 224                         # if the answer is "carry"
 225                         if ans == 1:
 226                                 # check if the inventory is full
 227                                 if len (self.butaba.inventory) >= butaba.Butaba.MAXITEMS:
 228                                         self.status_message = "Failed. Inventory full"
 229                                 else:
 230                                         # add item to inventory
 231                                         self.butaba.inventory.append (obj)
 232                                         self.currentlevel.objects.remove (obj)
 233
 234                                         self.status_message = "You picked up %s" % obj.text
 235                         elif ans == 2:
 236                                 # use the object according to its type
 237                                 self.use_object (obj)
 238                 # if it cannot be picked up, try to use it anyway
 239                 else:
 240                         self.use_object (obj)
 241
 242         # this method uses the object first by calling the object use () method
 243         # and then performing specific actions as necessary
 244         def use_object (self, obj):
 245                 # if the object is a health potion
 246                 if isinstance (obj, gameobjects.HealthPotion) is True:
 247                         obj.use (self.butaba)
 248                         if obj in self.currentlevel.objects:
 249                                 self.currentlevel.objects.remove (obj)
 250                         elif obj in self.butaba.inventory:
 251                                 self.butaba.inventory.remove (obj)
 252                         self.status_message = "You gained health"
 253                 # if the object is a chest
 254                 elif isinstance (obj, gameobjects.Chest) is True:
 255                         # if chest is locked, try to open it
 256                         if obj.locked is True:
 257                                 # try opening the chest with every item 9the use () function
 258                                 # of the chest determines if item is a key anyway
 259                                 fittedkey = None
 260                                 for invobj in self.butaba.inventory:
 261                                         fittedkey = obj.use (invobj)
 262                                         # if a key fits
 263                                         if fittedkey is not None:
 264                                                 break
 265                                 # if no key found
 266                                 if fittedkey is None:
 267                                         self.status_message = "No key found to open %s" % obj.text
 268                                 # chest successfully unlocked
 269                                 else:
 270                                         self.status_message = "You unlocked the %s" % obj.text
 271                                         # remove the key from inventory
 272                                         self.butaba.inventory.remove (fittedkey)
 273                         # display the contents of the chest
 274                         else:
 275                                 pass
 276                 # if the object is gold coins
 277                 elif isinstance (obj, gameobjects.GoldCoins) is True:
 278                         obj.use (self.butaba)
 279                         self.status_message = "You picked up %d gold." % obj.value
 280                         # remove the gold coins after adding it to Butaba's gold
 281                         if obj in self.currentlevel.objects:
 282                                 self.currentlevel.objects.remove (obj)
 283                         elif obj in self.butaba.inventory:
 284                                 self.butaba.inventory.remove (obj)
 285
 286         def move_butaba_left (self):
 287                 # clear any status messages
 288                 self.status_message = None
 289
 290                 # first if Butaba is not facing left, make him face left
 291                 if self.butaba.position <> butaba.Butaba.LEFT:
 292                         self.butaba.position = butaba.Butaba.LEFT
 293                         return
 294
 295                 # if butaba is trying to move off the left edge
 296                 if self.butaba.col <= 0:
 297                         # if there is a level to the right set current level to that one
 298                         if self.currentlevel.levelleft is not None:
 299                                 # get the last column of the previous level
 300                                 lastcol = len (self.currentlevel.levelleft.background[0]) - 1
 301                                 # interact with objects if any
 302                                 # if any object is a blocking object then avoid movement
 303                                 if self.interact_objects (self.currentlevel.levelleft, self.butaba.row, lastcol) is False:
 304                                         return
 305                                 # make sure there is no obstacle at that position of movement
 306                                 if self.check_background_obstacle (self.currentlevel.levelleft, self.butaba.row, lastcol) is False:
 307                                         self.currentlevel = self.currentlevel.levelleft
 308                                         self.butaba.col = lastcol
 309                 # normal left movement
 310                 else:
 311                         # interact with objects if any
 312                         # if any object is a blocking object then avoid movement
 313                         if self.interact_objects (self.currentlevel, self.butaba.row, self.butaba.col-1) is False:
 314                                 return
 315                         if self.check_background_obstacle (self.currentlevel, self.butaba.row, self.butaba.col-1) is False:
 316                                 self.butaba.col -= 1
 317
 318         def move_butaba_right (self):
 319                 # clear any status messages
 320                 self.status_message = None
 321
 322                 # First if Butaba is not facing right make him face right
 323                 if self.butaba.position <> butaba.Butaba.RIGHT:
 324                         self.butaba.position = butaba.Butaba.RIGHT
 325                         return
 326
 327                 # if butaba is trying to move off the right edge
 328                 if self.butaba.col >= len (self.currentlevel.background[0])-1:
 329                         # if there is a level to the right swap current level with that one
 330                         if self.currentlevel.levelright is not None:
 331                                 # interact with objects if any
 332                                 # if any object is a blocking object then avoid movement
 333                                 if self.interact_objects (self.currentlevel.levelright, self.butaba.row, 0) is False:
 334                                         return
 335
 336                                 # make sure there is no obstacle at that position of movement
 337                                 # get the last column of the previous level
 338                                 if self.check_background_obstacle (self.currentlevel.levelright, self.butaba.row, 0) is False:
 339                                         self.currentlevel = self.currentlevel.levelright
 340                                         self.butaba.col = 0
 341                 # normal right movement
 342                 else:
 343                         # interact with objects if any
 344                         # if any object is a blocking object then avoid moving
 345                         if self.interact_objects (self.currentlevel, self.butaba.row, self.butaba.col + 1) is False:
 346                                 return
 347                         if self.check_background_obstacle (self.currentlevel, self.butaba.row, self.butaba.col + 1) is False:
 348                                 self.butaba.col += 1
 349
 350         def draw_butaba (self):
 351                 if self.butaba.position == butaba.Butaba.FRONT:
 352                         self.screen.blit (self.img_butabafront, (self.butaba.col*48, self.butaba.row*48))
 353                 elif self.butaba.position == butaba.Butaba.BACK:
 354                         self.screen.blit (self.img_butababack, (self.butaba.col*48, self.butaba.row*48))
 355                 elif self.butaba.position == butaba.Butaba.LEFT:
 356                         self.screen.blit (self.img_butabaleft, (self.butaba.col*48, self.butaba.row*48))
 357                 elif self.butaba.position == butaba.Butaba.RIGHT:
 358                         self.screen.blit (self.img_butabaright, (self.butaba.col*48, self.butaba.row*48))
 359
 360
 361         # Draw the status infodisplay
 362         def draw_status (self):
 363                 self.screen.blit (self.img_redpotion, (485, 10))
 364                 utility.put_text (self.screen, 550, 25, 20, (255, 0, 0), "%d" % self.butaba.health)
 365
 366                 self.screen.blit (self.img_lightning, (620, 10))
 367                 utility.put_text (self.screen, 660, 25, 20, (255,255,255), "%d" % self.butaba.strength)
 368
 369                 self.screen.blit (self.img_wand, (485, 65))
 370                 utility.put_text (self.screen, 550, 75, 20, (0, 0, 255), "%d" % self.butaba.magic)
 371
 372                 self.screen.blit (self.img_bulb, (620, 65))
 373                 utility.put_text (self.screen, 660, 75, 20, (0, 255, 0), "%d" % self.butaba.experience)
 374
 375                 self.screen.blit (self.img_goldcoins, (485, 110))
 376                 utility.put_text (self.screen, 550, 130, 20, (255, 255, 0), "%d" % self.butaba.gold)
 377
 378                 if self.status_message is not None:
 379                         utility.put_text (self.screen, 10, 485, 16, (255,255, 0), "%s" % self.status_message)
 380
 381         # display the inventory of the player
 382         def draw_inventory (self):
 383                 # draw the inventory slots
 384                 r = 1
 385                 c = 1
 386                 utility.put_text (self.screen, 490, 170, 16, (255,255 , 0), "Inventory")
 387                 for i in range (butaba.Butaba.MAXITEMS):
 388                         self.screen.blit (self.img_inventory, (440+c*54, 150+r*54))
 389                         if c % 4 == 0:
 390                                 r += 1
 391                                 c = 1
 392                         else:
 393                                 c += 1
 394
 395                 r = 1
 396                 c = 1
 397                 for obj in self.butaba.inventory:
 398                         self.screen.blit (obj.image, (440+c*54+2, 150+r*54+2))
 399                         if c % 4 == 0:
 400                                 r += 1
 401                                 c = 1
 402                         else:
 403                                 c += 1
 404
 405         # Draw the level background tiles on surface
 406         def draw_level_background (self, level):
 407                 i = 0
 408                 for row in level.background:
 409                         j = 0
 410                         for tilerow, tilecol, is_solid in row:
 411                                 tilex = tilecol * 48
 412                                 tiley = tilerow * 48
 413                                 self.screen.blit (self.img_tileset, (j*48, i*48), pygame.Rect (tilex, tiley, 48, 48))
 414
 415                                 j += 1
 416                         i += 1
 417
 418         # Draw the level objects
 419         def draw_level_objects (self, level):
 420                 for obj in level.objects:
 421                         if obj.image is not None:
 422                                 self.screen.blit (obj.image, (obj.col*48, obj.row*48))