--- a06/jogo.py	2005-04-17 18:33:03.000000000 -0300
+++ a07/jogo.py	2005-10-08 12:24:11.000000000 -0300
@@ -4,9 +4,7 @@
 ###############################################################################
 #
 # Mudanças em relação à versão anterior:
-#    - naves inimigas tem comportamento diferente (behaviour)
-#    - painel de estado do jogador (vidas e acertos)
-#    - otimizacoes: lê a imagem somente uma vez. (Game.load_images())
+#    - otimizações: usar colorkey ao invés de transparência por pixel (alpha)
 #
 ###############################################################################
 
@@ -17,7 +15,7 @@
 import pygame
 from pygame.locals import *
 
-images_dir = os.path.join( "..", "imagens" )
+images_dir = os.path.join( "..", "imagens-noalpha" )
 
 # O random será muito útil para esse jogo, ele ajuda o jogo a perder
 # a monotonia
@@ -360,10 +358,12 @@
             self.last_xp = xp
             text = "XP: % 4d" % xp
             if self.bgcolor:
-                self.image = self.font.render( text, True, self.fgcolor,
+                self.image = self.font.render( text, False, self.fgcolor,
                                                self.bgcolor )
-            else:                
-                self.image = self.font.render( text, True, self.fgcolor )
+            else:
+                self.image = self.font.render( text, False, self.fgcolor,
+                                               ( 255, 0, 255 ) )
+                self.image.set_colorkey( ( 255, 0, 255 ), RLEACCEL )
                 
         screen.blit( self.image, self.pos )
             
@@ -450,7 +450,9 @@
 
         if isinstance( image, str ):
             image = os.path.join( images_dir, image )
-            image = pygame.image.load( image ).convert()
+            image = pygame.image.load( image )
+            image.set_alpha( None, RLEACCEL ) # disable alpha
+            image = image.convert()
 
 	self.isize = image.get_size()
 	self.pos = [ 0, -1 * self.isize[ 1 ] ]
@@ -469,7 +471,8 @@
             for j in range( ( back.get_size()[ 1 ] / self.isize[ 1 ] ) ):
                 back.blit( image, ( i * self.isize[ 0 ], j * self.isize[ 1 ] ) )
 
-        self.image = back
+        back.set_alpha( None, RLEACCEL )
+        self.image = back.convert()
     # __init__()
 
 
@@ -527,11 +530,19 @@
         """
         Lê as imagens necessarias pelo jogo.
         """
-        p  = images_dir + os.path.sep
-        self.image_player     = pygame.image.load( p + "nave.png" )
-        self.image_enemy      = pygame.image.load( p + "inimigo.png" )
-        self.image_fire       = pygame.image.load( p + "tiro.png" )
-        self.image_enemy_fire = pygame.image.load( p + "tiro_inimigo.png" )
+        def load_image( filename ):
+            img = pygame.image.load( os.path.join( images_dir, filename ) )
+            img.set_alpha( None, RLEACCEL ) # disable alpha.
+            img.convert()
+            img.set_colorkey( ( 255, 0, 255 ), RLEACCEL ) # magenta
+            return img
+        # load_image()
+
+        self.image_player        = load_image( "nave.png" )
+        self.image_player_status = load_image( "nave_status.png" )
+        self.image_enemy         = load_image( "inimigo.png" )
+        self.image_fire          = load_image( "tiro.png" )
+        self.image_enemy_fire    = load_image( "tiro_inimigo.png" )
     # load_images()
 
 
@@ -711,7 +722,8 @@
         pos         = [ self.screen_size[ 0 ] / 2, self.screen_size[ 1 ] ]
         self.player = Player( pos, lives=10, image=self.image_player )
 
-        self.player_life = PlayerLifeStatus( self.player, [ 5, 5 ] )
+        self.player_life = PlayerLifeStatus( self.player, [ 5, 5 ],
+                                             image=self.image_player_status )
         self.player_xp   = PlayerXPStatus( self.player,
                                            [ self.screen_size[ 0 ] - 100, 5 ],
                                            fgcolor="0xff0000" )