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courses.py
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courses.py
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# Course loading is structured differently from step file loading. In
# step files, SongItem is instantiated,creates an instance of a
# specific file class, loads it, and pulls the information it needs
# from it. In Courses, CourseFile is just function that returns an
# object of the appropriate type, which inherits from Course.
# I'm not sure which approach is better.
from constants import *
import random
import util
import error
import records
import os
from i18n import *
# The core course class.
class AbstractCourse(object):
def __init__(self, all_songs, recordkeys):
self.songs = []
self.name = _("A Course")
self.mixname = " "
self.banner = None
self.all_songs = all_songs
self.recordkeys = recordkeys
self.past_songs = []
def __len__(self): return len(self.songs)
# This course has been started. This means we need to set up some
# appropriate variables with values we can't get elsewhere.
def setup(self, screen, player_configs, game_config, gametype):
self.player_configs = player_configs
self.game_config = game_config
self.index = 0
self.gametype = gametype
self.screen = screen
# Done playing this course, GC the above.
def done(self):
self.screen = self.player_configs = self.game_config = None
# Sometimes we have a strange difficulty, like player's worst or a
# range, or totally random. This checks if the song contains the
# proper difficulty.
def _find_difficulty(self, song, diff):
if self.gametype not in song.difficulty: return False
# diffs can either be an individual string, representing a
# difficulty directly, a list of strings, representing possible
# difficulty names, or a list of integers, which is a range of
# possible ratings to choose.
elif isinstance(diff, str):
if diff in song.difficulty[self.gametype]: return diff
else: return False
elif isinstance(diff, list):
possible = []
if isinstance(diff[0], int):
for name, rating in song.difficulty[self.gametype].items():
if rating in diff: possible.append(name)
elif isinstance(diff[0], str):
for name in song.difficulty[self.gametype].keys():
if name in diff: possible.append(name)
if len(possible) > 0: return random.choice(possible)
return False
def __iter__(self): return self
def next(self):
# We're done.
if self.index == len(self.songs): raise StopIteration
name, diff, mods = self.songs[self.index]
fullname = None
a, b = 0, 0
if isinstance(diff, list): pass
elif diff.find("..") != -1: a, b = map(int, diff.split(".."))
elif len(diff) < 3: a, b = int(diff), int(diff)
if a or b: diff = range(a, b + 1)
# Check for player's best/worst/likes/dislikes. There are stored
# as a tuple of (type, number).
if name[0] == _("BEST"):
s = self.recordkeys.get(records.best(name[1], diff, self.gametype), None)
if s:
fullname = s.filename
if isinstance(diff, list):
diff = [d for d in diff if d in s.difficulty[self.gametype]][0]
elif name[0] == _("WORST"):
s = self.recordkeys.get(records.worst(name[1], diff, self.gametype),None)
if s:
fullname = s.filename
if isinstance(diff, list):
diff = [d for d in diff if d in s.difficulty[self.gametype]][0]
elif name[0] == _("LIKES"):
s = self.recordkeys.get(records.like(name[1], diff, self.gametype),None)
if s:
fullname = s.filename
if isinstance(diff, list):
diff = [d for d in diff if d in s.difficulty[self.gametype]][0]
elif name[0] == _("DISLIKES"):
s = self.recordkeys.get(records.dislike(name[1], diff, self.gametype),None)
if s:
fullname = s.filename
if isinstance(diff, list):
diff = [d for d in diff if d in s.difficulty[self.gametype]][0]
elif name[-1] == "*": # A random song
# First pull out all the songs that we might be acceptable.
if "/" in name:
# Random song from a specific mix.
folder, dummy = name.split("/")
folder = folder.lower()
if folder in self.all_songs:
songs = [s for s in self.all_songs[folder].values() if (s,diff) not in self.past_songs]
else:
error.ErrorMessage(self.screen, folder + _(" was not found."))
raise StopIteration
else:
# Any random song.
songs = []
for v in self.all_songs.values(): songs.extend(v.values())
songs = [s for s in songs if (s,diff) not in self.past_songs and self._find_difficulty(s, diff)]
if len(songs) == 0:
error.ErrorMessage(self.screen, _("No valid songs were found."))
raise StopIteration
else:
song = random.choice(songs)
diff = self._find_difficulty(song, diff)
fullname = song.filename
# Let's try to find the damned song.
# Unfortunately, it can be given as just a title(+subtitle), or a
# mix with a title. Or a filename. That's why we need the
# all_songs hash.
else:
for path in mainconfig["songdir"].split(os.pathsep):
fn = os.path.join(path, name)
fn = os.path.expanduser(fn)
if os.path.isfile(fn): fullname = fn
elif os.path.isdir(fn):
file_list = util.find(fn, ["*.sm", "*.dwi"])
if len(file_list) != 0: fullname = file_list[0]
if fullname: break
if not fullname and len(name[0]) == 1: # Still haven't found it...
folder, song = name.split("/")
song = self.all_songs.get(folder.lower(), {}).get(song.lower())
if song: fullname = song.filename
if not fullname:
if len(name[0]) > 1:
name = _("Player's %s #%d") % (name[0].capitalize(), name[1])
error.ErrorMessage(self.screen, name + _("was not found."))
raise StopIteration
self.index += 1
self.past_songs.append((fullname,diff))
return (fullname, [diff] * len(self.player_configs))
def CourseFile(*args):
if args[0].lower().endswith(".crs"): return CRSFile(*args)
else: raise RuntimeError(filename + _(" is an unsupported format."))
# Like DWI and SM files, CRS files are a variant of the MSD format.
# This is the DWI variant of .crs. Stepmania's (incompatible) course
# file format is also called .crs.
class CRSFile(AbstractCourse):
# Map modifier names to internal pydance names.
modifier_map = { "0.5x" : ("speed", 0.5),
"0.75x" : ("speed", 0.75),
"1.5x" : ("speed", 1.5),
"2.0x" : ("speed", 2.0),
"3.0x" : ("speed", 3.0),
"4.0x" : ("speed", 4.0),
"5.0x" : ("speed", 5.0),
"8.0x" : ("speed", 8.0),
"boost": ("accel", 1),
"break": ("accel", 2),
"sudden": ("fade", 1),
"hidden": ("fade", 2),
"cycle": ("fade", 4),
"stealth": ("fade", 5),
"mirror": ("transform", 1),
"left": ("transform", 2),
"right": ("transform", 3),
"shuffle": ("transform", -1),
"random": ("transform", -2),
"little": ("size", 2),
"reverse": ("scrollstyle", 1),
"noholds": ("holds", 0),
"dark": ("dark", 1),
}
def __init__(self, filename, all_songs, recordkeys):
AbstractCourse.__init__(self, all_songs, recordkeys)
self.filename = filename
# I'm not really sure if this is guaranteed or not, but the DDRUK
# courses match it.
self.banner = filename[:-3] + "png"
lines = []
f = file(filename)
for line in f:
if line.find("//") != -1: line = line[:line.find("//")]
line = line.strip()
if len(line) == 0: continue
elif line[0] == "#": lines.append(line[1:]) # A new tag
else: lines[-1] += line
for i, line in enumerate(lines):
while line[-1] == ";": line = line[:-1] # Some lines have two ;s.
lines[i] = line.split(":")
if os.path.split(self.filename)[0][-7:] != "courses":
self.mixname = os.path.split(os.path.split(self.filename)[0])[1]
for line in lines:
if line[0] == "COURSE": self.name = ":".join(line[1:])
elif line[0] == "SONG":
if len(line) == 3:
name, diff = line[1:]
modifiers = []
elif len(line) == 4:
name, diff, modifiers = line[1:]
modifiers = modifiers.split(",")
else: continue
if name[0:4] == _("BEST"): name = (_("BEST"), int(name[4:]))
elif name[0:5] == _("WORST"): name = (_("WORST"), int(name[5:]))
else: name = name.replace("\\", "/") # DWI uses Windows-style
# FIXME: This doesn't actually work yet. Modifier application
# is tricky because we don't have a way to 'reset' the
# player's objects to the new settings.
mods = {}
for mod in modifiers:
if mod in CRSFile.modifier_map:
key, value = CRSFile.modifier_map[mod]
mods[key] = value
self.songs.append((name, diff, mods))
# A course we can easily initialize manually.
class CodedCourse(AbstractCourse):
def __init__(self, all_songs, recordkeys, title, mix, songs):
AbstractCourse.__init__(self, all_songs, recordkeys)
self.name = title
self.mixname = mix
self.songs = songs
# And then, initialize some of those courses manually.
def make_players(all_songs, recordkeys):
courses = []
for start, end in [(1, 5), (5, 9), (1, 9)]:
for diff_name, diffs in [(_("(Easy)"), ["BASIC", "LIGHT", "EASY"]),
(_("(Normal)"), ["ANOTHER", "STANDARD", "NORMAL",
"TRICK", "MEDIUM"]),
(_("(Hard)"), ["MANIAC", "HEAVY", "HARD"]),
(_("(Expert)"), ["HARDCORE", "CRAZY", "SMANIAC",
"EXPERT"])]:
# Player's best, worst, likes, and dislikes
for name, type in ([_("Best"), _("BEST")],
[_("Worst"), _("WORST")],
[_("Likes"), _("LIKES")],
[_("Dislikes"), _("DISLIKES")]):
realname = "%s %d-%d %s" % (name, start, end - 1, diff_name)
songs = [((type, i), diffs, {}) for i in range(start, end)]
courses.append(CodedCourse(all_songs, recordkeys, realname,
_("Player's Picks"), songs))
# Random courses.
for i in [4, 8, 12]:
for diff_name, diffs in [(_("(Easy)"), ["BASIC", "LIGHT", "EASY"]),
(_("(Normal)"), ["ANOTHER", "STANDARD", "NORMAL",
"TRICK", "MEDIUM"]),
(_("(Hard)"), ["MANIAC", "HEAVY", "HARD"]),
(_("(Expert)"), ["HARDCORE", "CRAZY", "SMANIAC",
"EXPERT"])]:
randname = _("Random %d %s") % (i, diff_name)
randsongs = [("*", diffs, {})] * i
courses.append(CodedCourse(all_songs, recordkeys, randname,
_("random.choose(songs)"), randsongs))
# ... with random difficulties.
randname = _("All Random %d") % i
randsongs = [("*", "0..10", {})] * i
courses.append(CodedCourse(all_songs, recordkeys, randname,
_("random.choose(songs)"), randsongs))
# I like this course.
d1 = ["MANIAC", "HEAVY", "HARD"]
d2 = ["HARDCORE", "CRAZY", "SMANIAC", "EXPERT"]
songs1 = []
songs2 = []
for i in [29, 23, 19, 17, 13, 11, 7, 5, 3, 2]:
songs1.append(((_("WORST"), i), d1, {}))
songs2.append(((_("WORST"), i), d2, {}))
courses.append(CodedCourse(all_songs, recordkeys, _("Primal Fear (Easy)"),
_("Player's Picks"), songs1))
courses.append(CodedCourse(all_songs, recordkeys, _("Primal Fear (Hard)"),
_("Player's Picks"), songs2))
return courses