diff options
Diffstat (limited to 'modules/chibi/cp_loader_it_patterns.cpp')
| -rw-r--r-- | modules/chibi/cp_loader_it_patterns.cpp | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/modules/chibi/cp_loader_it_patterns.cpp b/modules/chibi/cp_loader_it_patterns.cpp new file mode 100644 index 0000000000..d951a91620 --- /dev/null +++ b/modules/chibi/cp_loader_it_patterns.cpp @@ -0,0 +1,166 @@ +/*************************************************************************/ +/* cp_loader_it_patterns.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* http://www.godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur. */ +/* */ +/* Permission is hereby granted, free of charge, to any person obtaining */ +/* a copy of this software and associated documentation files (the */ +/* "Software"), to deal in the Software without restriction, including */ +/* without limitation the rights to use, copy, modify, merge, publish, */ +/* distribute, sublicense, and/or sell copies of the Software, and to */ +/* permit persons to whom the Software is furnished to do so, subject to */ +/* the following conditions: */ +/* */ +/* The above copyright notice and this permission notice shall be */ +/* included in all copies or substantial portions of the Software. */ +/* */ +/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ +/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ +/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ +/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ +/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ +/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ +/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ +/*************************************************************************/ +#include "cp_loader_it.h" + + +CPLoader::Error CPLoader_IT::load_patterns() { + + + for (int i=0;i<header.patnum;i++) { + + if (i>=CPSong::MAX_PATTERNS) + break; + + /* Position where pattern offsets are stored */ + file->seek(0xC0+header.ordnum+header.insnum*4+header.smpnum*4+i*4); + uint32_t pattern_offset=file->get_dword(); + + if (pattern_offset==0) { + + continue; + } + + uint16_t pat_size; + uint16_t pat_length; + + int row=0,flag,channel,j; + uint8_t aux_byte; + uint32_t reserved; + uint8_t chan_mask[64]; //mask cache for each + CPNote last_value[64]; //last value of each + + for (j=0;j<64;j++) { + + chan_mask[j]=0; + last_value[j].clear(); + } + + file->seek(pattern_offset); + + pat_size=file->get_word(); + pat_length=file->get_word(); + reserved=file->get_dword(); + + song->get_pattern(i)->set_length( pat_length ); + + do { + + aux_byte=file->get_byte(); + flag=aux_byte; + + if ( flag==0 ) { + + row++; + } else { + + channel=(flag-1) & 63; + + if ( flag & 128 ) { + + aux_byte=file->get_byte(); + chan_mask[channel]=aux_byte; + } + + CPNote note; //note used for reading + + if ( chan_mask[channel]&1 ) { // read note + + aux_byte=file->get_byte(); + + if ( aux_byte<120 ) + note.note=aux_byte; + else if ( aux_byte==255 ) + note.note=CPNote::OFF; + else if ( aux_byte==254 ) + note.note=CPNote::CUT; + + last_value[channel].note=note.note; + } + + + if ( chan_mask[channel]&2 ) { + + aux_byte=file->get_byte(); + if ( aux_byte<100 ) + note.instrument=aux_byte-1; + + last_value[channel].instrument=note.instrument; + } + if ( chan_mask[channel]&4 ) { + + aux_byte=file->get_byte(); + if ( aux_byte<213 ) + note.volume=aux_byte; + + last_value[channel].volume=note.volume; + } + if ( chan_mask[channel]&8 ) { + + aux_byte=file->get_byte(); + if ( aux_byte>0 ) + note.command=aux_byte-1; + + + last_value[channel].command=note.command; + + note.parameter=file->get_byte(); + + last_value[channel].parameter=note.parameter; + } + + if ( chan_mask[channel]&16 ) { + + note.note=last_value[channel].note; + } + + if ( chan_mask[channel]&32 ) { + + note.instrument=last_value[channel].instrument; + } + if ( chan_mask[channel]&64 ) { + + note.volume=last_value[channel].volume; + } + if ( chan_mask[channel]&128 ) { + + note.command=last_value[channel].command; + note.parameter=last_value[channel].parameter; + } + + song->get_pattern(i)->set_note(channel,row,note); + } + + + } while(row<pat_length); + + } + + return FILE_OK; +} + |