X-Git-Url: https://harishankar.org/repos/?p=butaba-adventures.git;a=blobdiff_plain;f=maingame.py;h=4529e9a575f6603875ba0749aa6d03989155be44;hp=b70d48cb9a6a3ca84ef0797f66fa01534db525bf;hb=667ea7c15261100aae75b61de8664863b58f01e4;hpb=42a1f54d2fc5153bff97a8fc77086c4b7606c25e

diff --git a/maingame.py b/maingame.py
index b70d48c..4529e9a 100644
--- a/maingame.py
+++ b/maingame.py
@@ -2,71 +2,170 @@ import pygame
 import sys
 import random
 import os.path
+import cPickle
 
 import level
 import butaba
+import utility
+import gameobjects
+import constants
+import npcs
+import gamestate
 
 class MainGame:
 
 	# initialize the game
 	def __init__ (self):
+		random.seed ()
 		pygame.init ()
-		self.screen  = pygame.display.set_mode ((640, 480))
+
+		self.clock = pygame.time.Clock ()
+		self.screen  = pygame.display.set_mode ((720, 512))
 		pygame.display.set_caption ("The Adventures of Butaba")
 
 		# initalize background graphics
-		self.tileset = pygame.image.load (os.path.join ("background", "tileset.png")).convert ()
+		self.img_tileset = pygame.image.load (os.path.join ("background", "tileset.png")).convert ()
+
+		self.img_menu = pygame.image.load (os.path.join ("background", "menu_screen.png")).convert ()
+
+		self.img_inventory = pygame.image.load (os.path.join ("background", "inventory.png")).convert ()
+
+		self.img_chestbg = pygame.image.load (os.path.join ("background", "chestcontent.png")).convert ()
+
+		self.img_dialogue = pygame.image.load (os.path.join ("background", "dialog_screen.png")).convert ()
+		self.img_dialogue.set_colorkey (pygame.Color (0, 255, 0))
+
 
 		# initialize object graphics
-		self.redpotion = pygame.image.load (os.path.join ("objects", "red-potion.png")).convert ()
-		self.redpotion.set_colorkey (pygame.Color (0, 255, 0))
-		self.goldcoins = pygame.image.load (os.path.join ("objects", "gold-coins.png")).convert ()
-		self.goldcoins.set_colorkey (pygame.Color (0, 255, 0))
-		self.wand = pygame.image.load (os.path.join ("objects", "wand.png")).convert ()
-		self.wand.set_colorkey (pygame.Color (0, 255, 0))
-		self.bulb = pygame.image.load (os.path.join ("objects", "bulb.png")).convert ()
-		self.bulb.set_colorkey (pygame.Color (0, 255, 0))
-		self.lightning = pygame.image.load (os.path.join ("objects", "lightning.png")).convert ()
-		self.lightning.set_colorkey (pygame.Color (0, 255, 0))
+		self.img_redpotion = pygame.image.load (os.path.join ("objects", "red-potion.png")).convert ()
+		self.img_redpotion.set_colorkey (pygame.Color (0, 255, 0))
+		self.img_goldcoins = pygame.image.load (os.path.join ("objects", "gold-coins.png")).convert ()
+		self.img_goldcoins.set_colorkey (pygame.Color (0, 255, 0))
+		self.img_wand = pygame.image.load (os.path.join ("objects", "wand.png")).convert ()
+		self.img_wand.set_colorkey (pygame.Color (0, 255, 0))
+		self.img_bulb = pygame.image.load (os.path.join ("objects", "bulb.png")).convert ()
+		self.img_bulb.set_colorkey (pygame.Color (0, 255, 0))
+		self.img_lightning = pygame.image.load (os.path.join ("objects", "lightning.png")).convert ()
+		self.img_lightning.set_colorkey (pygame.Color (0, 255, 0))
+		self.img_key = pygame.image.load (os.path.join ("objects", "key.png")).convert ()
+		self.img_key.set_colorkey (pygame.Color (0, 255, 0))
+		self.img_key2 = pygame.image.load (os.path.join ("objects", "key2.png")).convert ()
+		self.img_key2.set_colorkey (pygame.Color (0, 255, 0))
+		self.img_chest = pygame.image.load (os.path.join ("objects", "chest.png")).convert ()
+		self.img_chest.set_colorkey (pygame.Color (0, 255, 0))
+		self.img_bucket = pygame.image.load (os.path.join ("objects", "bucket.png")).convert ()
+		self.img_bucket.set_colorkey (pygame.Color (0, 255, 0))
 
 		# initialize player graphics
-		self.butabafront = pygame.image.load (os.path.join ("sprite", "butaba-front.png")).convert ()
-		self.butabafront.set_colorkey (pygame.Color (0, 255, 0))
-		self.butababack = pygame.image.load (os.path.join ("sprite", "butaba-back.png")).convert ()
-		self.butababack.set_colorkey (pygame.Color (0, 255, 0))
-		self.butabaleft = pygame.image.load (os.path.join ("sprite", "butaba-left.png")).convert ()
-		self.butabaleft.set_colorkey (pygame.Color (0, 255, 0))
-		self.butabaright = pygame.image.load (os.path.join ("sprite", "butaba-right.png")).convert ()
-		self.butabaright.set_colorkey (pygame.Color (0, 255, 0))
+		self.img_butabafront = pygame.image.load (os.path.join ("sprite", "butaba-front.png")).convert ()
+		self.img_butabafront.set_colorkey (pygame.Color (0, 255, 0))
+		self.img_butababack = pygame.image.load (os.path.join ("sprite", "butaba-back.png")).convert ()
+		self.img_butababack.set_colorkey (pygame.Color (0, 255, 0))
+		self.img_butabaleft = pygame.image.load (os.path.join ("sprite", "butaba-left.png")).convert ()
+		self.img_butabaleft.set_colorkey (pygame.Color (0, 255, 0))
+		self.img_butabaright = pygame.image.load (os.path.join ("sprite", "butaba-right.png")).convert ()
+		self.img_butabaright.set_colorkey (pygame.Color (0, 255, 0))
+
+		# initialize NPC graphics
+		self.img_bulisafront = pygame.image.load (os.path.join ("sprite", "bulisa-front.png")).convert ()
+		self.img_bulisafront.set_colorkey (pygame.Color (0, 255, 0))
+
+		self.img_bulisaback = pygame.image.load (os.path.join ("sprite", "bulisa-back.png")).convert ()
+		self.img_bulisaback.set_colorkey (pygame.Color (0, 255, 0))
+
+		self.img_bulisaleft = pygame.image.load (os.path.join ("sprite", "bulisa-left.png")).convert ()
+		self.img_bulisaleft.set_colorkey (pygame.Color (0, 255, 0))
+
+		self.img_bulisaright = pygame.image.load (os.path.join ("sprite", "bulisa-right.png")).convert ()
+		self.img_bulisaright.set_colorkey (pygame.Color (0, 255, 0))
+
+		# initialize portraits
+		self.img_butaba_portrait = pygame.image.load (os.path.join ("portraits", "butaba.png")).convert ()
+		self.img_bulisa_portrait = pygame.image.load (os.path.join ("portraits", "bulisa.png")).convert ()
 
 		# set level data
 		self.setup_levels ()
 		# set current level and position of our character
 		self.currentlevel = self.level1
 
-		self.butaba = butaba.Butaba (5,0, butaba.Butaba.RIGHT)
+		# set the status message
+		self.status_message = "Game started"
+
+		self.butaba = butaba.Butaba (5,0, self.img_butabaleft,
+									self.img_butabaright, self.img_butabafront,
+									self.img_butababack, self.img_butaba_portrait, constants.RIGHT)
 
 	# set up the levels and their interactions
 	def setup_levels (self):
-		self.level1 = level.Level (level.LEVEL_1)
+		# set up the objects first
+		chest1 = gameobjects.Chest (2, 6, "chest", self.img_chest, constants.KEY_CHEST1, True)
+		chest2 = gameobjects.Chest (6, 6, "chest", self.img_chest, constants.KEY_CHEST2, True)
+		key2 = 	gameobjects.Key (5, 3, "a chest key", self.img_key, constants.KEY_CHEST2)
+		potion = gameobjects.HealthPotion (5, 2, self.img_redpotion)
+		gold50 = gameobjects.GoldCoins (6, 2, self.img_goldcoins, 50)
+		gold25 = gameobjects.GoldCoins (6, 2, self.img_goldcoins, 25)
+		gold10 = gameobjects.GoldCoins (6, 2, self.img_goldcoins, 10)
+		bucket = gameobjects.Bucket (6, 3, self.img_bucket)
+
+		well1 = gameobjects.Well (4, 7)
+		well2 = gameobjects.Well (5, 7)
+		well3 = gameobjects.Well (4, 8)
+		well4 = gameobjects.Well (5, 8)
+
+		npc_bulisa = npcs.Bulisa (4, 3, self.img_bulisaleft, self.img_bulisaright,
+									self.img_bulisafront, self.img_bulisaback,
+									self.img_bulisa_portrait, constants.FRONT,
+									(2, 2, 2, 2),
+									[ os.path.join ("dialogues", "bulisa1.dlg"),
+									  os.path.join ("dialogues", "bulisa2.dlg"),
+									  os.path.join ("dialogues", "bulisa3.dlg"),
+									  os.path.join ("dialogues", "bulisa4.dlg") ] )
+
+		chest1.objects = [ gold50, gold25, key2, gold10 ]
+
+		# create the levels
+		self.level1 = level.Level (cPickle.load (file (os.path.join ("levels", "level1.dat"))),
+				objects = [ chest1 ] )
+
+		self.level1w = level.Level (cPickle.load (file (os.path.join ("levels", "level1w.dat"))))
+
+		self.level1e = level.Level (cPickle.load (file (os.path.join ("levels", "level1e.dat"))),
+				objects = [ potion, chest2 ], npcs = [ npc_bulisa ])
 
-	# function to draw text
-	def put_text (self, x, y, size, (r,g,b), text):
-		harisfont = os.path.join ("font", "HarisComic-2.ttf")
-		surf = pygame.font.Font (harisfont, size).render (text, True, pygame.Color (r,g,b))
-		self.screen.blit (surf, (x, y))
+		self.level1ee = level.Level (cPickle.load (file (os.path.join ("levels", "level1ee.dat"))),
+				objects = [ well1, well2, well3, well4 ])
+
+		self.level1n = level.Level (cPickle.load (file (os.path.join ("levels", "level1n.dat"))),
+				objects = [ bucket ])
+
+		# set up the interaction between levels
+		self.level1.levelright = self.level1e
+		self.level1.levelleft = self.level1w
+		self.level1e.levelleft = self.level1
+		self.level1e.levelright = self.level1ee
+		self.level1ee.levelleft = self.level1e
+		self.level1w.levelright = self.level1
+		self.level1.leveltop = self.level1n
+		self.level1n.levelbottom = self.level1
 
 	def main_loop (self):
 		# main game loop
 		while 1:
+			self.clock.tick (25)
 			# clear screen
 			self.screen.fill (pygame.Color (0,0,0))
 			# draw the level
-			self.draw_level (self.currentlevel)
+			self.draw_level_background (self.currentlevel)
+			# draw level objects
+			self.draw_level_objects (self.currentlevel)
+			# draw the NPCs in the level
+			self.draw_level_npcs (self.currentlevel)
 			# draw our character
 			self.draw_butaba ()
+			# display the character's inventory
+			self.draw_inventory ()
 			# draw the status info
-			self.draw_information ()
+			self.draw_status ()
 			# update the display
 			pygame.display.update ()
 
@@ -74,6 +173,7 @@ class MainGame:
 			for event in pygame.event.get ():
 				if event.type == pygame.QUIT:
 					sys.exit (0)
+				# if keyboard event
 				if event.type == pygame.KEYDOWN:
 					if event.key == pygame.K_UP:
 						self.move_butaba_up ()
@@ -83,42 +183,79 @@ class MainGame:
 						self.move_butaba_left ()
 					elif event.key == pygame.K_RIGHT:
 						self.move_butaba_right ()
+					# drinking health potion in inventory
+					elif event.key == ord ("h") or event.key == ord ("H"):
+						self.inventory_drink_health_potion ()
+					# quit the game
+					elif event.key == ord ("q") or event.key == ord ("Q"):
+						sys.exit (0)
+
+	# drink a health potion if it is in the player's inventory
+	def inventory_drink_health_potion (self):
+		# look for a health potion
+		for item in self.butaba.objects:
+			if isinstance (item, gameobjects.HealthPotion) is True:
+				self.use_object (self.butaba, item)
+				break
 
 	def move_butaba_up (self):
+		# clear any status messages
+		self.status_message = None
 		# first if butaba is not facing up, make him face up
-		if self.butaba.position <> butaba.Butaba.BACK:
-			self.butaba.position = butaba.Butaba.BACK
+		if self.butaba.position <> constants.BACK:
+			self.butaba.position = constants.BACK
 			return
 
 		# if butaba is trying to move off the top of the screen
 		if self.butaba.row <= 0:
 			# if there is a level above set current level to that one
 			if self.currentlevel.leveltop is not None:
-				# make sure there is no obstacle
 				lastrow = len (self.currentlevel.leveltop.background) - 1
+				# interact with objects
+				if self.level_interact (self.currentlevel.leveltop, lastrow, self.butaba.col) is False:
+					return
+
+				# make sure there is no obstacle
 				if self.check_background_obstacle (self.currentlevel.leveltop, lastrow, self.butaba.col) is False:
 					self.currentlevel = self.currentlevel.leveltop
 					self.butaba.row = lastrow
 		# normal upward movement
-		elif self.check_background_obstacle (self.currentlevel, self.butaba.row-1, self.butaba.col) is False:
-			self.butaba.row -= 1
+		else:
+			# if there is any object in that place interact with it
+			# if any object is a blocking object then avoid movement
+			if self.level_interact (self.currentlevel, self.butaba.row-1, self.butaba.col) is False:
+				return
+
+			if self.check_background_obstacle (self.currentlevel, self.butaba.row-1, self.butaba.col) is False:
+				self.butaba.row -= 1
 
 	def move_butaba_down (self):
+		# clear any status messages
+		self.status_message = None
 		# first if butaba is not facing forward, make him face forward/down
-		if self.butaba.position <> butaba.Butaba.FRONT:
-			self.butaba.position = butaba.Butaba.FRONT
+		if self.butaba.position <> constants.FRONT:
+			self.butaba.position = constants.FRONT
 			return
 
 		# if butaba is trying to move off the bottom of the screen
 		if self.butaba.row >= len (self.currentlevel.background)-1:
 			# if there is a level below set current level to that one
 			if self.currentlevel.levelbottom is not None:
+				# interact with objects if any
+				# if any object is a blocking object then avoid movement
+				if self.level_interact (self.currentlevel.levelbottom, 0, self.butaba.col) is False:
+					return
 				# make sure there is no obstacle at that position
 				if self.check_background_obstacle (self.currentlevel.levelbottom, 0, self.butaba.col) is False:
 					self.currentlevel = self.currentlevel.levelbottom
 					self.butaba.row = 0
 		# normal downward movement
-		elif self.check_background_obstacle (self.currentlevel, self.butaba.row+1, self.butaba.col) is False:
+		else:
+			# interact with objects if any
+			# if any object is a blocking object then avoid movement
+			if self.level_interact (self.currentlevel, self.butaba.row+1, self.butaba.col) is False:
+				return
+			if self.check_background_obstacle (self.currentlevel, self.butaba.row+1, self.butaba.col) is False:
 				self.butaba.row += 1
 
 	# check if a background tile is an obstacle
@@ -128,78 +265,465 @@ class MainGame:
 		else:
 			return False
 
+	# get and interact with objects and characters if present in a particular row/col
+	def level_interact (self, level, row, col):
+		objs = []
+		# get list of objects at current location
+		for obj in level.objects:
+			if obj.row == row and obj.col == col:
+				objs.append (obj)
+
+		notblock = self.interact_objects (level, objs)
+
+		# get npc at current location
+		current_npc = None
+		for npc in level.npcs:
+			if npc.row == row and npc.col == col:
+				current_npc = npc
+				break
+
+		# npcs always block the tile. So return false if there is an NPC
+		# at the location
+		if current_npc is not None:
+			self.interact_npc (current_npc)
+			return False
+
+		return notblock
+
+	# interaction with npcs
+	def interact_npc (self, npc):
+		# interact with NPC and get the response ID
+		# if the NPC is Bulisa
+
+		# if the NPC is dead cannot talk with the NPC
+		if npc.is_dead is True:
+			self.status_message = "%s is dead! RIP..." % npc.charname
+			return
+
+		if isinstance (npc, npcs.Bulisa):
+			# interact
+			self.interact_npc_bulisa (npc)
+
+	# interact with NPC Bulisa
+	def interact_npc_bulisa (self, npc):
+		# set initial response ID to none
+		resp_id = None
+		# not yet started mission drawing water from well and not refused it
+		if (gamestate.mission_bulisa_water_from_well is False
+			and gamestate.mission_bulisa_water_from_well_refused is False):
+			# set the current dialogue
+			npc.currentdialog = 0
+			# get the response ID
+			resp_id = utility.dialogue_play (self.screen, self.img_dialogue, npc, self.butaba.portrait, 0, 90)
+		if (gamestate.mission_bulisa_water_from_well_refused is True and
+				gamestate.mission_bulisa_water_from_well is False):
+			# set the current dialog
+			npc.currentdialog = 2
+			resp_id = utility.dialogue_play (self.screen, self.img_dialogue, npc, self.butaba.portrait, 0, 90)
+		# mission accepted but not completed - check if completed and set value
+		# accordingly
+		elif (gamestate.mission_bulisa_water_from_well is True
+			and gamestate.mission_bulisa_water_from_well_complete is False):
+			for invobj in self.butaba.objects:
+				if isinstance (invobj, gameobjects.Bucket) is True:
+					if invobj.liquid == "water":
+						gamestate.mission_bulisa_water_from_well_complete = True
+						self.butaba.objects.remove (invobj)
+						key1 = gameobjects.Key (5, 3, "a chest key", self.img_key2, constants.KEY_CHEST1)
+						self.butaba.objects.append (key1)
+
+						break
+			# water mission is not completed yet
+			if gamestate.mission_bulisa_water_from_well_complete is False:
+				npc.currentdialog = 1
+			else:
+				npc.currentdialog = 3
+
+			# get the response ID
+			resp_id = utility.dialogue_play (self.screen, self.img_dialogue, npc, self.butaba.portrait, 0, 90)
+
+		# if response ID is 12, then drawing water from well mission is refused
+		if resp_id == "12" or resp_id == "18":
+			gamestate.mission_bulisa_water_from_well_refused = True
+		# if response ID is 13: that is accepted the drawing water from well mission begins
+		if resp_id == "13" or resp_id == "17":
+			gamestate.mission_bulisa_water_from_well = True
+		# if response ID is none
+		elif resp_id is None:
+			self.status_message = "You cannot initiate a conversation with %s" % npc.charname
+
+	# interaction with objects
+	def interact_objects (self, container, objs):
+		# overall flag for blocking/non-blocking objects
+		notblock = True
+
+		# now perform interaction
+		for obj in objs:
+			# run the object interact function
+			if obj.interact () is False:
+				notblock = False
+			# if object can be picked up ask
+			if obj.can_pickup is True:
+				ans = utility.ask_question (self.screen, "Found %s." % obj.text, ["Pick up", obj.use_str, "Ignore"], self.img_menu)
+				# if the answer is "pick up"
+				if ans == 1:
+					self.pickup_object (container, obj)
+				elif ans == 2:
+					# use the object according to its type
+					self.use_object (container, obj)
+			# if it cannot be picked up, try to use it anyway
+			else:
+				ans = utility.ask_question (self.screen, "Found %s." % obj.text, [obj.use_str, "Ignore"], self.img_menu)
+				if ans == 1:
+					self.use_object (container, obj)
+
+		return notblock
+
+	# transfer an object from one container to another
+	# container must have an objects list
+	def transfer_object (self, source, obj, dest):
+		# remove object from source
+		source.objects.remove (obj)
+		# add object to destination
+		dest.objects.append (obj)
+
+	# picking up an object
+	def pickup_object (self, container, obj):
+		# only if object can be picked up, pick it up or use it
+		if obj.can_pickup is True:
+			# check if the inventory is full
+			if len (self.butaba.objects) >= constants.MAXITEMS:
+				self.status_message = "Cannot pick up item. Inventory full"
+			else:
+				# add item to inventory
+				self.transfer_object (container, obj, self.butaba)
+
+				self.status_message = "You picked up %s" % obj.text
+
+	# this method uses the object first by calling the object use () method
+	# and then performing specific actions as necessary
+	def use_object (self, container, obj):
+		# if the object is a health potion
+		if isinstance (obj, gameobjects.HealthPotion) is True:
+			if self.butaba.health < constants.MAXHEALTH:
+				obj.use (self.butaba)
+				container.objects.remove (obj)
+				self.status_message = "You gained health"
+			else:
+				self.status_message = "You already have maximum health!"
+		# if the object is a chest
+		elif isinstance (obj, gameobjects.Chest) is True:
+			# if chest is locked, try to open it
+			if obj.locked is True:
+				# try opening the chest with every item 9the use () function
+				# of the chest determines if item is a key anyway
+				fittedkey = None
+				for invobj in self.butaba.objects:
+					fittedkey = obj.use (invobj)
+					# if a key fits
+					if fittedkey is not None:
+						break
+				# if no key found
+				if fittedkey is None:
+					self.status_message = "No key found to open %s" % obj.text
+				# chest successfully unlocked
+				else:
+					self.status_message = "You unlocked the %s" % obj.text
+					# remove the key from Butaba
+					self.butaba.objects.remove (fittedkey)
+					# add an experience point for unlocking chest subject
+					# to a limit of KNOWLEDGEMAX_CHEST_UNLOCK
+					if self.butaba.experience < constants.KNOWLEDGEMAX_CHEST_UNLOCK:
+						self.butaba.experience += 1
+						self.status_message += " and gained experience!"
+			# display the contents of the chest
+			else:
+				item = utility.get_container_object (self.screen, obj, self.img_chestbg, 30)
+				if item is not None:
+					self.interact_objects (obj, [ item, ])
+
+		# if the object is gold coins
+		elif isinstance (obj, gameobjects.GoldCoins) is True:
+			obj.use (self.butaba)
+			self.status_message = "You picked up %d gold." % obj.value
+			# remove the gold coins after adding it to Butaba's gold
+			container.objects.remove (obj)
+		# using a bucket means emptying it
+		elif isinstance (obj, gameobjects.Bucket) is True:
+			if obj.liquid is not None:
+				self.status_message = "You emptied the bucket of %s" % obj.liquid
+				obj.use (self.butaba)
+			else:
+				self.status_message = "Bucket is already empty."
+		# using a well
+		elif isinstance (obj, gameobjects.Well) is True:
+			# if the well is not dry, i.e. it has some liquid
+			if obj.liquid is not None:
+				# search butaba inventory for an empty bucket
+				for invobj in self.butaba.objects:
+					# bucket found, now check if it is empty
+					if isinstance (invobj, gameobjects.Bucket) is True:
+						# if empty fill it
+						if invobj.liquid is None:
+							obj.use (invobj)
+							self.status_message = "You successfully filled the %s with %s" % (invobj.text, obj.liquid)
+							if self.butaba.strength < constants.STRENGTHMAX_DRAW_WELL_WATER:
+								self.butaba.strength += 2
+								self.status_message += " and gained strength!"
+							return
+				self.status_message = "You have no empty bucket to draw %s with!" % obj.liquid
+			else:
+				self.status_message = "%s appears to be dry!" % obj.text
+
 	def move_butaba_left (self):
+		# clear any status messages
+		self.status_message = None
+
 		# first if Butaba is not facing left, make him face left
-		if self.butaba.position <> butaba.Butaba.LEFT:
-			self.butaba.position = butaba.Butaba.LEFT
+		if self.butaba.position <> constants.LEFT:
+			self.butaba.position = constants.LEFT
 			return
 
 		# if butaba is trying to move off the left edge
 		if self.butaba.col <= 0:
 			# if there is a level to the right set current level to that one
 			if self.currentlevel.levelleft is not None:
-				# make sure there is no obstacle at that position of movement
 				# get the last column of the previous level
 				lastcol = len (self.currentlevel.levelleft.background[0]) - 1
+				# interact with objects if any
+				# if any object is a blocking object then avoid movement
+				if self.level_interact (self.currentlevel.levelleft, self.butaba.row, lastcol) is False:
+					return
+				# make sure there is no obstacle at that position of movement
 				if self.check_background_obstacle (self.currentlevel.levelleft, self.butaba.row, lastcol) is False:
 					self.currentlevel = self.currentlevel.levelleft
 					self.butaba.col = lastcol
 		# normal left movement
-		elif self.check_background_obstacle (self.currentlevel, self.butaba.row, self.butaba.col-1) is False:
-			self.butaba.col -= 1
+		else:
+			# interact with objects if any
+			# if any object is a blocking object then avoid movement
+			if self.level_interact (self.currentlevel, self.butaba.row, self.butaba.col-1) is False:
+				return
+			if self.check_background_obstacle (self.currentlevel, self.butaba.row, self.butaba.col-1) is False:
+				self.butaba.col -= 1
 
 	def move_butaba_right (self):
+		# clear any status messages
+		self.status_message = None
+
 		# First if Butaba is not facing right make him face right
-		if self.butaba.position <> butaba.Butaba.RIGHT:
-			self.butaba.position = butaba.Butaba.RIGHT
+		if self.butaba.position <> constants.RIGHT:
+			self.butaba.position = constants.RIGHT
 			return
 
 		# if butaba is trying to move off the right edge
 		if self.butaba.col >= len (self.currentlevel.background[0])-1:
 			# if there is a level to the right swap current level with that one
 			if self.currentlevel.levelright is not None:
-			# make sure there is no obstacle at that position of movement
+				# interact with objects if any
+				# if any object is a blocking object then avoid movement
+				if self.level_interact (self.currentlevel.levelright, self.butaba.row, 0) is False:
+					return
+
+				# make sure there is no obstacle at that position of movement
 				# get the last column of the previous level
 				if self.check_background_obstacle (self.currentlevel.levelright, self.butaba.row, 0) is False:
 					self.currentlevel = self.currentlevel.levelright
 					self.butaba.col = 0
 		# normal right movement
-		elif self.check_background_obstacle (self.currentlevel, self.butaba.row, self.butaba.col + 1) is False:
-			self.butaba.col += 1
+		else:
+			# interact with objects if any
+			# if any object is a blocking object then avoid moving
+			if self.level_interact (self.currentlevel, self.butaba.row, self.butaba.col + 1) is False:
+				return
+			if self.check_background_obstacle (self.currentlevel, self.butaba.row, self.butaba.col + 1) is False:
+				self.butaba.col += 1
 
 	def draw_butaba (self):
-		if self.butaba.position == butaba.Butaba.FRONT:
-			self.screen.blit (self.butabafront, (self.butaba.col*48, self.butaba.row*48))
-		elif self.butaba.position == butaba.Butaba.BACK:
-			self.screen.blit (self.butababack, (self.butaba.col*48, self.butaba.row*48))
-		elif self.butaba.position == butaba.Butaba.LEFT:
-			self.screen.blit (self.butabaleft, (self.butaba.col*48, self.butaba.row*48))
-		elif self.butaba.position == butaba.Butaba.RIGHT:
-			self.screen.blit (self.butabaright, (self.butaba.col*48, self.butaba.row*48))
-
-	# Draw the sidebar infodisplay
-	def draw_information (self):
-		self.screen.blit (self.redpotion, (485, 10))
-		self.put_text (550, 25, 28, (255, 0, 0), "%d" % self.butaba.health)
-		self.screen.blit (self.goldcoins, (485, 50))
-		self.put_text (550, 75, 28, (255, 255, 0), "%d" % self.butaba.gold)
-		self.screen.blit (self.wand, (485, 120))
-		self.put_text (550, 130, 28, (0, 0, 255), "%d" % self.butaba.magic)
-		self.screen.blit (self.bulb, (485, 180))
-		self.put_text (550, 190, 28, (0, 255, 0), "%d" % self.butaba.experience)
-		self.screen.blit (self.lightning, (485, 240))
-		self.put_text (550, 250, 28, (255,255,255), "%d" % self.butaba.strength)
-
-	# Draw the level background tiles
-	def draw_level (self, level):
+		if self.butaba.position == constants.FRONT:
+			self.screen.blit (self.butaba.imagefront, (self.butaba.col*48, self.butaba.row*48))
+		elif self.butaba.position == constants.BACK:
+			self.screen.blit (self.butaba.imageback, (self.butaba.col*48, self.butaba.row*48))
+		elif self.butaba.position == constants.LEFT:
+			self.screen.blit (self.butaba.imageleft, (self.butaba.col*48, self.butaba.row*48))
+		elif self.butaba.position == constants.RIGHT:
+			self.screen.blit (self.butaba.imageright, (self.butaba.col*48, self.butaba.row*48))
+
+
+	# Draw the status infodisplay
+	def draw_status (self):
+		self.screen.blit (self.img_redpotion, (485, 10))
+		utility.put_text (self.screen, 550, 25, 20, (255, 0, 0), "%d" % self.butaba.health)
+
+		self.screen.blit (self.img_lightning, (620, 10))
+		utility.put_text (self.screen, 660, 25, 20, (255,255,255), "%d" % self.butaba.strength)
+
+		self.screen.blit (self.img_wand, (485, 65))
+		utility.put_text (self.screen, 550, 75, 20, (0, 0, 255), "%d" % self.butaba.magic)
+
+		self.screen.blit (self.img_bulb, (620, 65))
+		utility.put_text (self.screen, 660, 75, 20, (0, 255, 0), "%d" % self.butaba.experience)
+
+		self.screen.blit (self.img_goldcoins, (485, 110))
+		utility.put_text (self.screen, 550, 130, 20, (255, 255, 0), "%d" % self.butaba.gold)
+
+		if self.status_message is not None:
+			utility.put_text (self.screen, 10, 485, 10, (255,255, 0), "%s" % self.status_message)
+
+	# display the inventory of the player
+	def draw_inventory (self):
+		# draw the inventory slots
+		r = 1
+		c = 1
+		utility.put_text (self.screen, 490, 170, 16, (255,255 , 0), "Inventory")
+		for i in range (constants.MAXITEMS):
+			self.screen.blit (self.img_inventory, (440+c*54, 150+r*54))
+			if c % 4 == 0:
+				r += 1
+				c = 1
+			else:
+				c += 1
+
+		r = 1
+		c = 1
+		for obj in self.butaba.objects:
+			self.screen.blit (obj.image, (440+c*54+2, 150+r*54+2))
+			if c % 4 == 0:
+				r += 1
+				c = 1
+			else:
+				c += 1
+
+	# Draw the level background tiles on surface
+	def draw_level_background (self, level):
 		i = 0
 		for row in level.background:
 			j = 0
 			for tilerow, tilecol, is_solid in row:
 				tilex = tilecol * 48
 				tiley = tilerow * 48
-				self.screen.blit (self.tileset, (j*48, i*48), pygame.Rect (tilex, tiley, 48, 48))
+				self.screen.blit (self.img_tileset, (j*48, i*48), pygame.Rect (tilex, tiley, 48, 48))
 
 				j += 1
 			i += 1
 
+	# Draw the level objects
+	def draw_level_objects (self, level):
+		for obj in level.objects:
+			if obj.image is not None:
+				self.screen.blit (obj.image, (obj.col*48, obj.row*48))
+
+
+	# Draw the NPCs in the level
+	def draw_level_npcs (self, level):
+		for npc in level.npcs:
+			# if npc is not dead then move the NPC randomly depending on their
+			# movement area
+			if npc.is_dead is False:
+				# move this turn?
+				if random.randint (1, 500) < npc.movement_speed:
+					# whether to change direction?
+					if random.randint (1, 100) < 25:
+						npc.position = random.randint (0, 3)
+					else:
+						# if left movement
+						if npc.position == constants.LEFT:
+							# cannot move beyond level and cannot move beyond the
+							# left limit area
+							if npc.col > 0 and npc.col > npc.initcol - npc.leftlimit:
+								# check if there is any background obstacle
+								if self.check_background_obstacle (level, npc.row, npc.col - 1) is False:
+									# check if there are any objects
+									objblock = False
+									npcblock = False
+									for lobj in level.objects:
+										if lobj.row == npc.row and lobj.col == npc.col - 1:
+											objblock = True
+											break
+									# check if there any any npcs blocking
+									for lnpc in level.npcs:
+										if lnpc.row == npc.row and lnpc.col == npc.col - 1:
+											npcblock = True
+											break
+									if objblock is False and npcblock is False:
+										# if butaba is not blocking
+										if self.butaba.row <> npc.row or self.butaba.col <> npc.col - 1:
+											npc.col -= 1
+						elif npc.position == constants.RIGHT:
+							# cannot move beyond level and cannot move beyond the
+							# right limit area
+							if npc.col < 9 and npc.col < npc.initcol + npc.rightlimit:
+								# check if there is any background obstacle
+								if self.check_background_obstacle (level, npc.row, npc.col + 1) is False:
+									# check if there are any objects
+									objblock = False
+									npcblock = False
+									for lobj in level.objects:
+										if lobj.row == npc.row and lobj.col == npc.col + 1:
+											objblock = True
+											break
+									# check if there any any npcs blocking
+									for lnpc in level.npcs:
+										if lnpc.row == npc.row and lnpc.col == npc.col + 1:
+											npcblock = True
+											break
+									if objblock is False and npcblock is False:
+										# if butaba is not blocking
+										if self.butaba.row <> npc.row or self.butaba.col <> npc.col + 1:
+											npc.col += 1
+						elif npc.position == constants.FRONT:
+							# cannot move beyond level and cannot move beyond the
+							# lower bottom limit area
+							if npc.row < 9 and npc.row < npc.initrow + npc.bottomlimit:
+								# check if there is any background obstacle
+								if self.check_background_obstacle (level, npc.row + 1, npc.col) is False:
+									# check if there are any objects
+									objblock = False
+									npcblock = False
+									for lobj in level.objects:
+										if lobj.row == npc.row + 1 and lobj.col == npc.col:
+											objblock = True
+											break
+									# check if there any any npcs blocking
+									for lnpc in level.npcs:
+										if lnpc.row == npc.row + 1 and lnpc.col == npc.col:
+											npcblock = True
+											break
+									if objblock is False and npcblock is False:
+										# if butaba is not blocking
+										if self.butaba.row <> npc.row + 1 or self.butaba.col <> npc.col:
+											npc.row += 1
+						elif npc.position == constants.BACK:
+							# cannot move beyond level and cannot move beyond the
+							# top upper limit area
+							if npc.row > 0 and npc.row > npc.initrow - npc.toplimit:
+								# check if there is any background obstacle
+								if self.check_background_obstacle (level, npc.row - 1, npc.col) is False:
+									# check if there are any objects
+									objblock = False
+									npcblock = False
+									for lobj in level.objects:
+										if lobj.row == npc.row - 1 and lobj.col == npc.col:
+											objblock = True
+											break
+									# check if there any any npcs blocking
+									for lnpc in level.npcs:
+										if lnpc.row == npc.row - 1 and lnpc.col == npc.col:
+											npcblock = True
+											break
+									# if no object is blocking
+									if objblock is False and npcblock is False:
+										# if butaba is not blocking
+										if self.butaba.row <> npc.row - 1 or self.butaba.col <> npc.col:
+											npc.row -= 1
+
+			if npc.position == constants.FRONT:
+				img = npc.imagefront
+			elif npc.position == constants.BACK:
+				img = npc.imageback
+			elif npc.position == constants.LEFT:
+				img = npc.imageleft
+			else:
+				img = npc.imageright
+
+			self.screen.blit (img, (npc.col*48, npc.row*48))