qq bidouilles de l'ordre de l'expérimentation.
[minwii.git] / src / app / widgets / playingscreen.py
1 # -*- coding: utf-8 -*-
2 """
3 Écran de jeu MinWii :
4 bandes arc-en-ciel représentant un clavier.
5
6 $Id$
7 $URL$
8 """
9 import pygame
10 from cursors import WarpingCursor
11 from column import Column
12 import events
13 from eventutils import event_handler, EventDispatcher, EventHandlerMixin
14 import types
15 from musicxml import Tone
16
17 from config import FRAMERATE
18 from config import BORDER
19 from config import FIRST_HUE
20 from config import DEFAULT_MIDI_VELOCITY
21
22 from globals import BACKGROUND_LAYER
23 from globals import CURSOR_LAYER
24 from globals import PLAYING_MODES_DICT
25
26 class _PlayingScreenBase(pygame.sprite.LayeredDirty, EventHandlerMixin) :
27
28 def __init__(self, synth, distinctNotes=[]) :
29 """
30 distinctNotes : notes disctinctes présentes dans la chanson
31 triées du plus grave au plus aigu.
32 """
33 super(_PlayingScreenBase, self).__init__()
34 self.synth = synth
35 self.distinctNotes = distinctNotes
36 self.keyboardLength = 0
37 self.keyboardRects = []
38 self.cursor = None
39 self._initRects()
40 self.columns = {}
41 self._initColumns()
42 self._running = False
43 self.draw(pygame.display.get_surface())
44 self._initCursor()
45
46 def _initRects(self) :
47 """ création des espaces réservés pour
48 afficher les colonnes.
49 """
50 #ambitus = self.distinctNotes[-1].midi - self.distinctNotes[0].midi
51 #if ambitus <= 12 :
52 # self.keyboardLength = 8
53 #else :
54 # self.keyboardLength = 11
55 self.keyboardLength = len(self.distinctNotes)
56
57 screen = pygame.display.get_surface()
58
59 # taille de la zone d'affichage utile (bordure autour)
60 self.dispWidth = dispWidth = screen.get_width() - 2 * BORDER
61 self.dispHeight = dispHeight = screen.get_height() - 2 * BORDER
62
63 columnWidth = int(round(float(dispWidth) / self.keyboardLength))
64
65 rects = []
66 for i in range(self.keyboardLength) :
67 upperLeftCorner = (i*columnWidth + BORDER, BORDER)
68 rect = pygame.Rect(upperLeftCorner, (columnWidth, dispHeight))
69 rects.append(rect)
70
71 self.keyboardRects = rects
72
73 def _initColumns(self) :
74
75 hueStep = FIRST_HUE / (self.keyboardLength - 1)
76 for i, rect in enumerate(self.keyboardRects) :
77 hue = FIRST_HUE - hueStep * i
78 tone = self.distinctNotes[i]
79 c = Column(self, hue, rect, tone)
80 self.add(c, layer=BACKGROUND_LAYER)
81 self.columns[tone.midi] = c
82
83
84 def _initCursor(self) :
85 self.cursor = WarpingCursor(blinkMode=True)
86 self.add(self.cursor, layer=CURSOR_LAYER)
87
88 def run(self):
89 self._running = True
90 clock = pygame.time.Clock()
91 pygame.display.flip()
92 pygame.mouse.set_visible(False)
93 while self._running :
94 EventDispatcher.dispatchEvents()
95 dirty = self.draw(pygame.display.get_surface())
96 pygame.display.update(dirty)
97 clock.tick(FRAMERATE)
98
99 def stop(self) :
100 self._running = False
101 self.synth.system_reset()
102 pygame.mouse.set_visible(True)
103 self.cursor._stopBlink()
104
105 @event_handler(pygame.KEYDOWN)
106 def handleKeyDown(self, event) :
107 if event.key == pygame.K_q:
108 self.stop()
109
110 @event_handler(pygame.MOUSEBUTTONDOWN)
111 def onMouseDown(self, event) :
112 # TODO à cleaner : on vire le dernier élément
113 # parce qu'il s'agit du curseur
114 for col in reversed(self.sprites()[:-1]) :
115 if col.rect.collidepoint(*event.pos):
116 self.raiseColDown(col)
117 break
118
119 @event_handler(pygame.MOUSEBUTTONUP)
120 def onMouseUp(self, event) :
121 for col in reversed(self.sprites()[:-1]) :
122 if col.rect.collidepoint(*event.pos) :
123 self.raiseColUp(col)
124 break
125
126 @event_handler(pygame.MOUSEMOTION)
127 def onMouseMove(self, event) :
128 for col in reversed(self.sprites()[:-1]) :
129 if col.rect.collidepoint(*event.pos) :
130 self.raiseColOver(col)
131 break
132
133 def raiseColDown(self, col) :
134 evt = pygame.event.Event(events.COLDOWN, column=col)
135 pygame.event.post(evt)
136
137 def raiseColUp(self, col) :
138 evt = pygame.event.Event(events.COLUP, column=col)
139 pygame.event.post(evt)
140
141 def raiseColOver(self, col) :
142 evt = pygame.event.Event(events.COLOVER, column=col)
143 pygame.event.post(evt)
144
145
146 class PlayingScreen(_PlayingScreenBase) :
147 "fenêtre de jeu pour improvisation"
148
149 scale = [55, 57, 59, 60, 62, 64, 65, 67, 69, 71, 72]
150
151 def __init__(self, synth) :
152 distinctNotes = []
153 for midi in self.scale :
154 tone = Tone(midi)
155 distinctNotes.append(tone)
156
157 super(PlayingScreen, self).__init__(synth, distinctNotes)
158
159 @event_handler(events.NOTEON)
160 def noteon(self, evt) :
161 tone = evt.tone
162 self.synth.noteon(0, tone.midi, DEFAULT_MIDI_VELOCITY)
163
164 @event_handler(events.NOTEOFF)
165 def noteoff(self, evt) :
166 tone = evt.tone
167 self.synth.noteoff(0, tone.midi)
168
169
170 class SongPlayingScreen(_PlayingScreenBase) :
171
172 def __init__(self, synth, song, mode=PLAYING_MODES_DICT['EASY']) :
173 super(SongPlayingScreen, self).__init__(synth, song.distinctNotes)
174 self.song = song
175 self.quarterNoteDuration = song.quarterNoteDuration
176 self.currentColumn = None
177 self.noteIterator = self.song.iterNotes()
178 self.displayNext()
179 if mode == PLAYING_MODES_DICT['NORMAL'] :
180 EventDispatcher.addEventListener(events.COLDOWN, self.handleColumnDown)
181 EventDispatcher.addEventListener(events.COLUP, self.handleColumnUp)
182 elif mode == PLAYING_MODES_DICT['EASY'] :
183 EventDispatcher.addEventListener(events.COLOVER, self.handleColumnOver)
184
185
186 def displayNext(self, event=None) :
187 if self.currentColumn:
188 self.currentColumn.update(False)
189 note, verseIndex = self.noteIterator.next()
190 syllabus = note.lyrics[verseIndex].syllabus()
191 column = self.columns[note.midi]
192 column.update(True, syllabus)
193 self.currentColumn = column
194 self.currentNote = note
195 self.currentNotePlayed = False
196
197 def handleColumnDown(self, event) :
198 col = event.column
199 if col.state:
200 self.synth.noteon(0, col.tone.midi, DEFAULT_MIDI_VELOCITY)
201 self.currentNotePlayed = True
202
203 def handleColumnUp(self, event) :
204 if self.currentNotePlayed :
205 self.synth.noteoff(0, self.currentColumn.tone.midi)
206 self.displayNext()
207
208 def handleColumnOver(self, event) :
209 col = event.column
210 if col.state and not self.currentNotePlayed :
211 self.synth.noteon(0, col.tone.midi, DEFAULT_MIDI_VELOCITY)
212 SongPlayingScreen.setNoteTimeout(
213 int(self.currentNote.duration * \
214 self.quarterNoteDuration)
215 )
216 self.currentNotePlayed = True
217
218 @event_handler(events.NOTEEND)
219 def clearTimeOutAndDisplayNext(self, evt) :
220 pygame.time.set_timer(evt.type, 0)
221 self.synth.noteoff(0, self.currentNote.midi)
222 self.displayNext()
223
224 @staticmethod
225 def setNoteTimeout(delay) :
226 pygame.time.set_timer(events.NOTEEND, delay)
227
228 def stop(self) :
229 pygame.time.set_timer(events.NOTEEND, 0)
230 super(SongPlayingScreen, self).stop()
231