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