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virtualx-engine/modules/chibi/cp_player_data_notes.cpp
Rémi Verschelde d8223ffa75 Welcome in 2017, dear changelog reader! 
That year should bring the long-awaited OpenGL ES 3.0 compatible renderer
with state-of-the-art rendering techniques tuned to work as low as middle
end handheld devices - without compromising with the possibilities given
for higher end desktop games of course. Great times ahead for the Godot
community and the gamers that will play our games!

(cherry picked from commit c7bc44d5ad)
2017-01-12 19:15:30 +01:00

345 lines
12 KiB
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/*************************************************************************/
/* cp_player_data_notes.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 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_player_data.h"
#include "cp_sample_manager.h"
#define RANDOM_MAX 2147483647
static inline int32_t cp_random_generate(int32_t *seed) {
int32_t k;
int32_t s = (int32_t)(*seed);
if (s == 0)
s = 0x12345987;
k = s / 127773;
s = 16807 * (s - k * 127773) - 2836 * k;
if (s < 0)
s += 2147483647;
(*seed) = (int32_t)s;
return (int32_t)(s & RANDOM_MAX);
}
void CPPlayer::process_new_note(int p_track,uint8_t p_note) { // if there's really a new note....
if (control.channel[p_track].real_note!=255) {
control.channel[p_track].old_note=control.channel[p_track].real_note;
}
control.channel[p_track].real_note=p_note;
control.channel[p_track].kick=KICK_NOTE;
control.channel[p_track].sample_start_index=-1;
control.channel[p_track].sliding=0;
control.channel[p_track].row_has_note=true;
control.channel[p_track].last_event_usecs=song_usecs;
if (control.channel[p_track].panbrello_type) control.channel[p_track].panbrello_position=0;
}
bool CPPlayer::process_new_instrument(int p_track,uint8_t p_instrument) {
// bool different_instrument=false;
ERR_FAIL_INDEX_V(p_instrument,CPSong::MAX_INSTRUMENTS,false);
if ( song->has_instruments() ) {
control.channel[p_track].instrument_ptr=song->get_instrument(p_instrument);
} else {
control.channel[p_track].instrument_ptr=NULL;
}
control.channel[p_track].retrig_counter=0;
control.channel[p_track].tremor_position=0;
control.channel[p_track].sample_offset_fine=0;
int old_instr_index=control.channel[p_track].instrument_index;
control.channel[p_track].instrument_index=p_instrument;
return (old_instr_index!=p_instrument);
}
// returns if it was able to process
bool CPPlayer::process_note_and_instrument(int p_track,int p_note,int p_instrument) {
bool aux_result;
aux_result=false;
CPSample *aux_sample=0; // current sample
int dest_sample_index;
bool new_instrument=false;
control.channel[p_track].row_has_note=false; // wise man says.. "we dont have a note... until we really know we have a note".
control.channel[p_track].new_instrument=false;
if ( (p_note<0) && (p_instrument<0) ) return aux_result; // nothing to do here
if ( (p_note==255) && (p_instrument==255) ) return aux_result;
if ( (p_note>=0) && (p_note<120) ) {
process_new_note(p_track,p_note);
} else if (p_note==CPNote::CUT) {
control.channel[p_track].aux_volume=0;
control.channel[p_track].note_end_flags|=END_NOTE_OFF;
control.channel[p_track].note_end_flags|=END_NOTE_KILL;
return aux_result;
} else if ((p_note==CPNote::OFF) && (song->has_instruments())) {
if (control.channel[p_track].instrument_ptr!=NULL) {
control.channel[p_track].note_end_flags|=END_NOTE_OFF;
if (!control.channel[p_track].instrument_ptr->get_volume_envelope()->is_enabled() || control.channel[p_track].instrument_ptr->get_volume_envelope()->is_loop_enabled()) {
control.channel[p_track].note_end_flags|=END_NOTE_FADE;
}
}
return aux_result;
} else return aux_result; // invalid note!
if ( (p_instrument>=0) && (p_instrument<CPSong::MAX_INSTRUMENTS)) {
new_instrument=process_new_instrument(p_track,p_instrument);
if ( song->has_instruments() ) {
// If we're in instrument mode...
if ( control.channel[p_track].instrument_ptr->get_sample_number(control.channel[p_track].real_note) >= CPSong::MAX_SAMPLES) {
control.channel[p_track].kick=KICK_NOTHING;
return aux_result;
} else {
dest_sample_index=control.channel[p_track].instrument_ptr->get_sample_number(control.channel[p_track].real_note);
control.channel[p_track].note=control.channel[p_track].instrument_ptr->get_note_number(control.channel[p_track].real_note);
}
} else {
// If we're in sample mode...
dest_sample_index=control.channel[p_track].instrument_index;
control.channel[p_track].note=control.channel[p_track].real_note;
}
control.channel[p_track].sample_index=dest_sample_index;
aux_sample=song->get_sample(dest_sample_index);
if (!CPSampleManager::get_singleton()->check( aux_sample->get_sample_data() )) {
/* INVALID SAMPLE */
control.channel[p_track].kick=KICK_NOTHING;
return aux_result;
}
aux_sample=song->get_sample(dest_sample_index);
} else {
if (!control.channel[p_track].sample_ptr)
return aux_result;
if (song->has_instruments()) {
if (!control.channel[p_track].instrument_ptr)
return aux_result;
control.channel[p_track].note=control.channel[p_track].instrument_ptr->get_note_number(control.channel[p_track].real_note);
} else {
control.channel[p_track].note=control.channel[p_track].real_note;
}
aux_sample=control.channel[p_track].sample_ptr;
}
if (p_instrument>=CPSong::MAX_INSTRUMENTS && control.channel[p_track].sample_ptr!=aux_sample) {
control.channel[p_track].new_instrument=(control.channel[p_track].period>0);
}
control.channel[p_track].sample_ptr=aux_sample;
/* channel or instrument determined panning ? */
control.channel[p_track].panning=control.channel[p_track].channel_panning;
/* set filter,if any ? */
if (aux_sample->is_pan_enabled()) {
control.channel[p_track].panning=(int)aux_sample->get_pan()*255/64;
} else if ( song->has_instruments() && (control.channel[p_track].instrument_ptr->is_pan_default_enabled()) ) {
control.channel[p_track].panning=(int)control.channel[p_track].instrument_ptr->get_pan_default_amount()*255/64;
}
if (song->has_instruments()) {
/* Pitch-Pan Separation */
if ((control.channel[p_track].instrument_ptr->get_pan_pitch_separation()!=0) && (control.channel[p_track].channel_panning!=PAN_SURROUND)){
control.channel[p_track].panning+=((control.channel[p_track].real_note-control.channel[p_track].instrument_ptr->get_pan_pitch_center())*control.channel[p_track].instrument_ptr->get_pan_pitch_separation())/8;
if (control.channel[p_track].panning<PAN_LEFT) control.channel[p_track].panning=PAN_LEFT;
if (control.channel[p_track].panning>PAN_RIGHT) control.channel[p_track].panning=PAN_RIGHT;
}
/* Random Volume Variation */
if (control.channel[p_track].instrument_ptr->get_volume_random_variation()>0) {
control.channel[p_track].random_volume_variation=100-(cp_random_generate(&control.random_seed) % control.channel[p_track].instrument_ptr->get_volume_random_variation());
} else {
control.channel[p_track].random_volume_variation=100;
}
/* Random Pan Variation */
if ((control.channel[p_track].instrument_ptr->get_pan_random_variation()>0) && (control.channel[p_track].panning!=PAN_SURROUND)){
int aux_pan_modifier;
aux_pan_modifier=(cp_random_generate(&control.random_seed) % (control.channel[p_track].instrument_ptr->get_pan_random_variation() << 2));
if ((cp_random_generate(&control.random_seed) % 2)==1) aux_pan_modifier=0-aux_pan_modifier; /* it's 5am, let me sleep :) */
control.channel[p_track].panning+=aux_pan_modifier;
if (control.channel[p_track].panning<PAN_LEFT) control.channel[p_track].panning=PAN_LEFT;
if (control.channel[p_track].panning>PAN_RIGHT) control.channel[p_track].panning=PAN_RIGHT;
}
/*filter*/
if (control.channel[p_track].instrument_ptr->filter_use_default_cutoff()) {
control.channel[p_track].filter.it_cutoff=control.channel[p_track].instrument_ptr->get_filter_default_cutoff()*2;
}
if (control.channel[p_track].instrument_ptr->filter_use_default_resonance()) {
control.channel[p_track].filter.it_reso=control.channel[p_track].instrument_ptr->get_filter_default_resonance()*2;
}
/*envelopes*/
control.channel[p_track].volume_envelope_on=control.channel[p_track].instrument_ptr->get_volume_envelope()->is_enabled();
control.channel[p_track].panning_envelope_on=control.channel[p_track].instrument_ptr->get_pan_envelope()->is_enabled();
control.channel[p_track].pitch_envelope_on=control.channel[p_track].instrument_ptr->get_pitch_filter_envelope()->is_enabled();
control.channel[p_track].NNA_type=control.channel[p_track].instrument_ptr->get_NNA_type();
control.channel[p_track].duplicate_check_type=control.channel[p_track].instrument_ptr->get_DC_type();
control.channel[p_track].duplicate_check_action=control.channel[p_track].instrument_ptr->get_DC_action();
} else {
control.channel[p_track].NNA_type=CPInstrument::NNA_NOTE_CUT;
control.channel[p_track].duplicate_check_type=CPInstrument::DCT_DISABLED;
control.channel[p_track].duplicate_check_action=CPInstrument::DCA_NOTE_CUT;
}
if (p_instrument<CPSong::MAX_INSTRUMENTS) { // instrument change
control.channel[p_track].volume=control.channel[p_track].aux_volume=aux_sample->get_default_volume();
}
control.channel[p_track].slide_to_period=control.channel[p_track].aux_period=get_period((uint16_t)(control.channel[p_track].note)<<1,CPSampleManager::get_singleton()->get_c5_freq( (aux_sample->get_sample_data())));
control.channel[p_track].note_end_flags=END_NOTE_NOTHING; /* clears flags */
return true;
}
void CPPlayer::process_volume_column(int p_track,uint8_t p_volume) {
control.channel[p_track].current_volume_command=CPNote::EMPTY;
control.channel[p_track].current_volume_parameter=CPNote::EMPTY;
if (p_volume<65) { // VOLUME
control.channel[p_track].aux_volume=p_volume;
} else if (p_volume<125) { // Volume Command
control.channel[p_track].current_volume_command=(p_volume-65) / 10;
control.channel[p_track].current_volume_parameter=(p_volume-65) % 10;
} else if (p_volume<193) { // PAN
control.channel[p_track].channel_panning=(p_volume-128)*PAN_RIGHT/64;
control.channel[p_track].panning=control.channel[p_track].channel_panning;
} else if (p_volume<213) { //More volume Commands
control.channel[p_track].current_volume_command=((p_volume-193) / 10)+6;
control.channel[p_track].current_volume_parameter=(p_volume-193) % 10;
}
}
void CPPlayer::process_note(int p_track,CPNote p_note) {
if ( p_note.note!=CPNote::SCRIPT ) {
process_note_and_instrument(p_track,p_note.note,p_note.instrument);
process_volume_column(p_track,p_note.volume);
control.channel[p_track].current_command=p_note.command;
control.channel[p_track].current_parameter=p_note.parameter;
} else {
CPNote n = song->get_pattern( control.position.current_pattern )->get_transformed_script_note( p_track, control.position.current_row );
process_note( p_track, n );
song->get_pattern( control.position.current_pattern )->scripted_clone( p_track, control.position.current_row );
}
}
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