119 lines
4.0 KiB
GDScript
119 lines
4.0 KiB
GDScript
extends Node2D
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const MusicPlayer := preload('res://scripts/MusicPlayer.gd')
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var MusicLoader := preload('res://scripts/loaders/snes/music_ff5.gd').new()
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var inst_buttons = []
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var sfx_buttons = []
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func _create_sfx_buttons():
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var disable_btn := !SoundLoader.has_loaded_audio_samples
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for i in SoundLoader.INST_NUM:
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var btn = Button.new()
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btn.text = 'Inst #%02X' % i
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btn.align = Button.ALIGN_CENTER
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btn.set_position(Vector2((i%7)*50, (i/7)*24))
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btn.rect_min_size.x = 48
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add_child(btn)
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btn.connect('pressed', SoundLoader, 'play_sample', [i])
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inst_buttons.append(btn)
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btn.disabled = disable_btn
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for i in SoundLoader.SFX_NUM:
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var btn = Button.new()
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btn.text = 'SFX #%02X' % i
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btn.align = Button.ALIGN_CENTER
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btn.set_position(Vector2((i%4)*50, 130 + (i/4)*24))
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btn.rect_min_size.x = 48
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add_child(btn)
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btn.connect('pressed', SoundLoader, 'play_sfx', [i])
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sfx_buttons.append(btn)
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btn.disabled = disable_btn
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if disable_btn:
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SoundLoader.connect('audio_samples_loaded', self, '_enable_sfx_buttons')
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SoundLoader.connect('audio_inst_sample_loaded', self, '_enable_inst_button')
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SoundLoader.connect('audio_sfx_sample_loaded', self, '_enable_sfx_button')
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func _enable_sfx_buttons():
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for btn in sfx_buttons:
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btn.disabled = false
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for btn in inst_buttons:
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btn.disabled = false
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func _enable_sfx_button(id: int):
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# NB: This assumes sequential loading (may change, probably won't)
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for i in id+1:
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sfx_buttons[i].disabled = false
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func _enable_inst_button(id: int):
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# NB: This assumes sequential loading (may change, probably won't)
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for i in id+1:
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inst_buttons[i].disabled = false
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const NUM_CHANNELS := 8
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var music_player = null
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var inst_sample_map := {}
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var bgm_tracksets := {}
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func evaluate_bgm(id: int):
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var buffer: StreamPeerBuffer = RomLoader.snes_buffer.duplicate()
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var bgm_song_ptr: int = RomLoader.snes_data.bgm_song_pointers[id] & 0x3FFFFF
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var bank_offset: int = bgm_song_ptr & 0x3F0000
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buffer.seek(bgm_song_ptr)
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var length := buffer.get_u16()
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var rom_address_base := buffer.get_u16()
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var track_ptrs := PoolIntArray()
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for i in NUM_CHANNELS:
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var track_ptr := buffer.get_u16() + bank_offset
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if track_ptr < bgm_song_ptr:
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track_ptr += 0x010000 # next bank
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track_ptrs.append(track_ptr)
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var end_ptr := buffer.get_u16() + bank_offset
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if end_ptr < bgm_song_ptr:
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end_ptr += 0x010000 # next bank
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var tracks := []
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for i in NUM_CHANNELS:
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var track_ptr := track_ptrs[i]
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# var channel: MusicChannel = self.channels[i]
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# print('Unrolling BGM track %02d:%02d at 0x%06X:0x%06X:0x%06X' % [id, i, bgm_song_ptr, track_ptr, end_ptr])
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tracks.append(MusicLoader.unroll_track(buffer.duplicate(), bgm_song_ptr, track_ptr, end_ptr, '%02d:%02d'%[id, i]))
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bgm_tracksets[id] = tracks
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func play_bgm(id: int) -> void:
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var inst_indices = RomLoader.snes_data.bgm_instrument_indices[id]
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for i in 16:
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var inst_idx: int = inst_indices[i]-1
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if inst_idx < 0:
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self.inst_sample_map[i + 0x20] = null
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else:
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self.inst_sample_map[i + 0x20] = SoundLoader.instrument_samples[inst_idx]
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if self.music_player:
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remove_child(music_player)
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self.music_player = MusicPlayer.new(bgm_tracksets[id], self.inst_sample_map)
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add_child(self.music_player)
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self.music_player.is_playing = true
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print('Playing BGM%02d' % id)
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func _play_bgm() -> void:
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self.play_bgm($sb_bgm.value)
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func _create_bgm_playback() -> void:
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$sb_bgm.max_value = SoundLoader.BGM_NUM
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$btn_bgm.connect('pressed', self, '_play_bgm')
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for i in SoundLoader.SFX_NUM:
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self.inst_sample_map[i] = SoundLoader.sfx_samples[i]
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for i in SoundLoader.BGM_NUM:
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evaluate_bgm(i)
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func _stop_all() -> void:
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if self.music_player:
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self.music_player.queue_free()
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self.music_player = null
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SoundLoader.player.stop()
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# Called when the node enters the scene tree for the first time.
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func _ready() -> void:
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self._create_sfx_buttons()
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self._create_bgm_playback()
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$btn_stop.connect('pressed', self, '_stop_all')
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for i in len(RomLoader.snes_data.bgm_song_pointers):
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var pointer = RomLoader.snes_data.bgm_song_pointers[i]
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print('BGM 0x%02X (%02d) at 0x%06X' % [i, i, pointer])
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