Add Splash screen, begin music earlier, and control scroll speed with F1-F12

diff --git a/base2-runner.py b/base2-runner.py
index 7937a84..e00642e 100755 (executable)
--- a/base2-runner.py
+++ b/base2-runner.py
@@ -4,7 +4,7 @@
 #
 # 2D platform scrolling game that teaches binary logic
 
-import sys, os, time, random, pygame
+import sys, os, time, random, math, pygame
 import engine
 
 # Use conditionals in the code to print useful information to the console using the form:
@@ -22,9 +22,13 @@ class Base2Runner:
  screen = None # the pygame Screen for the game window
 
  def __init__(self, width, height, title, resources={}, debug=False):
+  os.environ['SDL_VIDEO_CENTERED'] = '1' 
   pygame.init()
   self.debug = debug
   self.myGame = engine.Game(width, height, title, resources, debug=self.debug)
+  if self.myGame.config['sound'] == 1:
+   self.myGame.soundtrack.playlist(self.myGame.resources['soundtrack'])
+
   self.background_colour = (20, 20, 64)
   if 'icon' in self.myGame.resources:
    if self.debug: engine.debug_pr("pygame.image.get_extended()=%r" % pygame.image.get_extended())
@@ -50,9 +54,6 @@ class Base2Runner:
   # starting position
   y = resolution[1] / 2
 
-  if self.myGame.config['sound'] == 1:
-   self.myGame.soundtrack.playlist(self.myGame.resources['soundtrack'])
-
   self.myGame.config['auto_scroll'] = False
   movement = 0 # represents number of pixels, and direction, of next scroll
   x_pos = 0 # coordinate of left side of viewport
@@ -105,6 +106,11 @@ class Base2Runner:
       self.myGame.soundtrack.pause()
      elif k == pygame.K_l:
       self.myGame.config['auto_scroll'] = True if self.myGame.config['auto_scroll'] == False else False
+     elif k >= pygame.K_F1 and k <= pygame.K_F12:
+      self.stepping = k - (pygame.K_F1 - 1)
+      if self.myGame.config['auto_scroll']:
+       movement = int(math.copysign(self.stepping, movement))
+      if self.debug: engine.debug_pr("Keypress=%d, movement=%d" % (k, movement))
 
     if event.type == pygame.USEREVENT:
      if self.debug: engine.debug_pr("pygame.USEREVENT received; calling playlist_next()")
@@ -138,6 +144,7 @@ class Base2Runner:
 
 def main(width, height, title, resources={}, debug=False):
  game = Base2Runner(width, height, title, resources, debug)
+ time.sleep(10) # keep splash screen up for a little longer
  game.play()
  exit(0)
 
@@ -148,4 +155,5 @@ if __name__ == '__main__':
  resources['background'] = 'binary-1024x1024.jpg'
  resources['splash'] = 'base2runner.jpg'
  resources['soundtrack'] = 'Music'
+ resources['copyright'] = '© Copyright 2013 TJ <hacker@iam.tj>'
  main(900, 600, "Base² Runner", resources, debug=True)

diff --git a/engine/Channel.py b/engine/Channel.py
index 71c6651..12f6215 100755 (executable)
--- a/engine/Channel.py
+++ b/engine/Channel.py
@@ -18,8 +18,10 @@ class Channel:
  # use integers to control volume which avoids float rounding error issues
  MAX = 100
  MIN = 0
+ volume = 50
  volume_step = 5
- def __init__(self, volume=1.0, channel_id=0, debug=False):
+
+ def __init__(self, volume=50, channel_id=0, debug=False):
   """ Constructor.
    volume:     an SDL/PyGame floating-point with range 0.00 to 1.00. It is stored internally as an 
                integer with range 0 to 100 to avoid rounding errors when stepping the volume.
@@ -28,7 +30,6 @@ class Channel:
 
    self.channel == None indicates this is the Music channel.
   """
-  self.volume = int(volume*100)
   self.channel_id = 0
   self.debug = debug
   self.paused = False
@@ -39,6 +40,8 @@ class Channel:
    self.channel_id = channel_id
    self.channel = pygame.mixer.Channel(self.channel_id)
 
+  self.set_volume(int(volume))
+
  def set_volume(self, new_level):
   """ Ensure the new level is within legal range and alter the mixer level """
   if new_level >= Channel.MIN and new_level <= Channel.MAX:

diff --git a/engine/Game.py b/engine/Game.py
index 38174de..203be80 100755 (executable)
--- a/engine/Game.py
+++ b/engine/Game.py
@@ -9,6 +9,8 @@ import os.path, pygame, engine
 class Game:
  """ Container for all game state and configuration items """
  config = dict()
+ fonts = dict()
+ colours = dict()
  resources = None
 
  def res_path(self, key):
@@ -18,8 +20,8 @@ class Game:
   if key in self.resources:
    self.resources[key] = os.path.join(self.resources['path'], self.resources[key])
    return True
-
-  return False
+  else:
+   return False
 
  def __init__(self, width=0, height=0, title="", resources={},  debug=False):
   """ Constructor.
@@ -29,11 +31,17 @@ class Game:
    resources:  Dictionary containing resources
    debug:      enable debug messages written to console
   """
+  # define the colour styles we need
+  self.colours['h1']   = (255, 255, 255)
+  self.colours['body'] = (0, 255, 255)
+
+  # store the received values
   self.config.update({'width':width, 'height':height})
   self.config.update({'title':title})
   self.resolution = width, height
   self.debug = debug
 
+  # prefix the resource path to all resource filenames
   self.resources = resources
   if not self.resources['path']:
    self.resources['path'] = ''
@@ -41,14 +49,39 @@ class Game:
   self.res_path('soundtrack')
   self.res_path('icon')
   self.res_path('background')
+  self.res_path('splash')
 
   # default values
+  self.resources['title'] = title
   self.config.update({'sound':1}) # default to playing sound
   self.play = False               # Flag that controls exit from main loop
   self.paused = False             # Flag controlling pause of game play
   self.soundtrack = engine.Channel(channel_id=-1, debug=self.debug)
   self.sound_effects = engine.Channel(channel_id=0, debug=self.debug)
 
+  # splash screen
+  self.splash()
+
+ def splash(self):
+  # draw the splash screen 
+  if self.resources['splash']:
+   # find out the image dimensions
+   self.splash_screen = pygame.display.set_mode((0,0), pygame.NOFRAME)
+   self.splash_image = pygame.image.load(self.resources['splash']).convert()
+   resolution = self.splash_image.get_size()
+   # draw a splash screen until the game is ready
+   if self.debug: engine.debug_pr("Splash screen=%s" % self.resources['splash'], resolution)
+   self.splash_screen = pygame.display.set_mode(resolution, pygame.NOFRAME)
+   self.splash_image = pygame.image.load(self.resources['splash']).convert()
+   self.splash_screen.blit(self.splash_image, (0,0))
+   self.fonts['h1'] = pygame.font.Font(None, 80)
+   self.fonts['body'] = pygame.font.Font(None, 30)
+   x, y = 40, 10
+   self.splash_screen.blit(self.fonts['h1'].render(self.resources['title'], True, self.colours['h1']), (x, y))
+   y += 80
+   self.splash_screen.blit(self.fonts['body'].render(self.resources['copyright'], True, self.colours['body']), (x, y))
+   pygame.display.update()
+
   def pause(self):
    """ Toggle the game's paused state """
    self.paused = True if self.paused == False else False