557 lines
18 KiB
C++
557 lines
18 KiB
C++
/*************************************************************************/
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/* audio_stream_player_2d.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "audio_stream_player_2d.h"
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#include "core/engine.h"
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#include "core/project_settings.h"
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#include "scene/2d/area_2d.h"
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#include "scene/2d/listener_2d.h"
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#include "scene/main/viewport.h"
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void AudioStreamPlayer2D::_mix_audio() {
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if (!stream_playback.is_valid() || !active.is_set() ||
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(stream_paused && !stream_paused_fade_out)) {
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return;
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}
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if (setseek.get() >= 0.0) {
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stream_playback->start(setseek.get());
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setseek.set(-1.0); //reset seek
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}
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//get data
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AudioFrame *buffer = mix_buffer.ptrw();
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int buffer_size = mix_buffer.size();
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if (stream_paused_fade_out) {
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// Short fadeout ramp
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buffer_size = MIN(buffer_size, 128);
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}
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stream_playback->mix(buffer, pitch_scale, buffer_size);
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//write all outputs
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int oc = output_count.get();
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for (int i = 0; i < oc; i++) {
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Output current = outputs[i];
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//see if current output exists, to keep volume ramp
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bool found = false;
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for (int j = i; j < prev_output_count; j++) {
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if (prev_outputs[j].viewport == current.viewport) {
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if (j != i) {
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SWAP(prev_outputs[j], prev_outputs[i]);
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}
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found = true;
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break;
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}
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}
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if (!found) {
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//create new if was not used before
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if (prev_output_count < MAX_OUTPUTS) {
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prev_outputs[prev_output_count] = prev_outputs[i]; //may be owned by another viewport
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prev_output_count++;
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}
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prev_outputs[i] = current;
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}
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//mix!
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AudioFrame target_volume = stream_paused_fade_out ? AudioFrame(0.f, 0.f) : current.vol;
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AudioFrame vol_prev = stream_paused_fade_in ? AudioFrame(0.f, 0.f) : prev_outputs[i].vol;
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AudioFrame vol_inc = (target_volume - vol_prev) / float(buffer_size);
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AudioFrame vol = vol_prev;
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int cc = AudioServer::get_singleton()->get_channel_count();
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if (cc == 1) {
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if (!AudioServer::get_singleton()->thread_has_channel_mix_buffer(current.bus_index, 0)) {
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continue; //may have been removed
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}
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AudioFrame *target = AudioServer::get_singleton()->thread_get_channel_mix_buffer(current.bus_index, 0);
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for (int j = 0; j < buffer_size; j++) {
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target[j] += buffer[j] * vol;
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vol += vol_inc;
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}
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} else {
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AudioFrame *targets[4];
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bool valid = true;
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for (int k = 0; k < cc; k++) {
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if (!AudioServer::get_singleton()->thread_has_channel_mix_buffer(current.bus_index, k)) {
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valid = false; //may have been removed
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break;
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}
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targets[k] = AudioServer::get_singleton()->thread_get_channel_mix_buffer(current.bus_index, k);
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}
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if (!valid) {
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continue;
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}
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for (int j = 0; j < buffer_size; j++) {
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AudioFrame frame = buffer[j] * vol;
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for (int k = 0; k < cc; k++) {
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targets[k][j] += frame;
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}
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vol += vol_inc;
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}
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}
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prev_outputs[i] = current;
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}
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prev_output_count = oc;
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//stream is no longer active, disable this.
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if (!stream_playback->is_playing()) {
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active.clear();
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}
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output_ready.clear();
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stream_paused_fade_in = false;
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stream_paused_fade_out = false;
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}
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void AudioStreamPlayer2D::_notification(int p_what) {
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if (p_what == NOTIFICATION_ENTER_TREE) {
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AudioServer::get_singleton()->add_callback(_mix_audios, this);
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if (autoplay && !Engine::get_singleton()->is_editor_hint()) {
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play();
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}
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}
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if (p_what == NOTIFICATION_EXIT_TREE) {
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AudioServer::get_singleton()->remove_callback(_mix_audios, this);
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}
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if (p_what == NOTIFICATION_PAUSED) {
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if (!can_process()) {
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// Node can't process so we start fading out to silence
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set_stream_paused(true);
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}
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}
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if (p_what == NOTIFICATION_UNPAUSED) {
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set_stream_paused(false);
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}
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if (p_what == NOTIFICATION_INTERNAL_PHYSICS_PROCESS) {
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//update anything related to position first, if possible of course
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if (!output_ready.is_set()) {
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List<Viewport *> viewports;
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Ref<World2D> world_2d = get_world_2d();
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ERR_FAIL_COND(world_2d.is_null());
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int new_output_count = 0;
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Vector2 global_pos = get_global_position();
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int bus_index = AudioServer::get_singleton()->thread_find_bus_index(bus);
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//check if any area is diverting sound into a bus
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Physics2DDirectSpaceState *space_state = Physics2DServer::get_singleton()->space_get_direct_state(world_2d->get_space());
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Physics2DDirectSpaceState::ShapeResult sr[MAX_INTERSECT_AREAS];
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int areas = space_state->intersect_point(global_pos, sr, MAX_INTERSECT_AREAS, Set<RID>(), area_mask, false, true);
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for (int i = 0; i < areas; i++) {
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Area2D *area2d = Object::cast_to<Area2D>(sr[i].collider);
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if (!area2d) {
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continue;
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}
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if (!area2d->is_overriding_audio_bus()) {
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continue;
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}
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StringName bus_name = area2d->get_audio_bus_name();
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bus_index = AudioServer::get_singleton()->thread_find_bus_index(bus_name);
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break;
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}
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world_2d->get_viewport_list(&viewports);
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for (List<Viewport *>::Element *E = viewports.front(); E; E = E->next()) {
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Viewport *vp = E->get();
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if (vp->is_audio_listener_2d()) {
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//compute matrix to convert to screen
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Vector2 screen_size = vp->get_visible_rect().size;
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Vector2 listener_in_global;
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Vector2 relative_to_listener;
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Listener2D *listener = vp->get_listener_2d();
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if (listener) {
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listener_in_global = listener->get_global_position();
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relative_to_listener = global_pos - listener_in_global;
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} else {
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Transform2D to_listener = vp->get_global_canvas_transform() * vp->get_canvas_transform();
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listener_in_global = to_listener.affine_inverse().xform(screen_size * 0.5);
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relative_to_listener = to_listener.xform(global_pos) - screen_size * 0.5;
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}
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float dist = global_pos.distance_to(listener_in_global); // Distance to listener, or screen if none.
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if (dist > max_distance) {
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continue; //can't hear this sound in this viewport
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}
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float multiplier = Math::pow(1.0f - dist / max_distance, attenuation);
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multiplier *= Math::db2linear(volume_db); //also apply player volume!
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float pan = relative_to_listener.x / screen_size.x;
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// Don't let the panning effect extend (too far) beyond the screen.
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pan = CLAMP(pan, -1, 1);
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// Bake in a constant factor here to allow the project setting defaults for 2d and 3d to be normalized to 1.0.
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pan *= panning_strength * cached_global_panning_strength * 0.5f;
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pan = CLAMP(pan + 0.5, 0.0, 1.0);
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float l = 1.0 - pan;
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float r = pan;
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outputs[new_output_count].vol = AudioFrame(l, r) * multiplier;
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outputs[new_output_count].bus_index = bus_index;
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outputs[new_output_count].viewport = vp; //keep pointer only for reference
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new_output_count++;
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if (new_output_count == MAX_OUTPUTS) {
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break;
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}
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}
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}
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output_count.set(new_output_count);
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output_ready.set();
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}
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//start playing if requested
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if (setplay.get() >= 0.0) {
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setseek.set(setplay.get());
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active.set();
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setplay.set(-1);
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//do not update, this makes it easier to animate (will shut off otherwise)
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//_change_notify("playing"); //update property in editor
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}
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//stop playing if no longer active
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if (!active.is_set()) {
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set_physics_process_internal(false);
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//do not update, this makes it easier to animate (will shut off otherwise)
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//_change_notify("playing"); //update property in editor
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emit_signal("finished");
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}
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}
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}
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void AudioStreamPlayer2D::set_stream(Ref<AudioStream> p_stream) {
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// Instancing audio streams can cause large memory allocations, do it prior to AudioServer::lock.
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Ref<AudioStreamPlayback> pre_instanced_playback;
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if (p_stream.is_valid()) {
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pre_instanced_playback = p_stream->instance_playback();
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}
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AudioServer::get_singleton()->lock();
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mix_buffer.resize(AudioServer::get_singleton()->thread_get_mix_buffer_size());
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if (stream_playback.is_valid()) {
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stream_playback.unref();
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stream.unref();
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active.clear();
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setseek.set(-1);
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}
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if (p_stream.is_valid()) {
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stream = p_stream;
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stream_playback = pre_instanced_playback;
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}
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AudioServer::get_singleton()->unlock();
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if (p_stream.is_valid() && stream_playback.is_null()) {
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stream.unref();
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}
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}
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Ref<AudioStream> AudioStreamPlayer2D::get_stream() const {
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return stream;
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}
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void AudioStreamPlayer2D::set_volume_db(float p_volume) {
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volume_db = p_volume;
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}
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float AudioStreamPlayer2D::get_volume_db() const {
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return volume_db;
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}
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void AudioStreamPlayer2D::set_pitch_scale(float p_pitch_scale) {
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ERR_FAIL_COND(p_pitch_scale <= 0.0);
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pitch_scale = p_pitch_scale;
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}
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float AudioStreamPlayer2D::get_pitch_scale() const {
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return pitch_scale;
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}
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void AudioStreamPlayer2D::play(float p_from_pos) {
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if (!is_playing()) {
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// Reset the prev_output_count if the stream is stopped
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prev_output_count = 0;
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}
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if (stream_playback.is_valid()) {
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setplay.set(p_from_pos);
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output_ready.clear();
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set_physics_process_internal(true);
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}
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}
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void AudioStreamPlayer2D::seek(float p_seconds) {
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if (stream_playback.is_valid()) {
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setseek.set(p_seconds);
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}
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}
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void AudioStreamPlayer2D::stop() {
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if (stream_playback.is_valid()) {
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active.clear();
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set_physics_process_internal(false);
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setplay.set(-1);
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}
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}
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bool AudioStreamPlayer2D::is_playing() const {
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if (stream_playback.is_valid()) {
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return active.is_set() || setplay.get() >= 0;
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}
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return false;
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}
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float AudioStreamPlayer2D::get_playback_position() {
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if (stream_playback.is_valid()) {
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float ss = setseek.get();
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if (ss >= 0.0) {
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return ss;
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}
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return stream_playback->get_playback_position();
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}
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return 0;
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}
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void AudioStreamPlayer2D::set_bus(const StringName &p_bus) {
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//if audio is active, must lock this
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AudioServer::get_singleton()->lock();
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bus = p_bus;
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AudioServer::get_singleton()->unlock();
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}
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StringName AudioStreamPlayer2D::get_bus() const {
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for (int i = 0; i < AudioServer::get_singleton()->get_bus_count(); i++) {
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if (AudioServer::get_singleton()->get_bus_name(i) == bus) {
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return bus;
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}
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}
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return "Master";
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}
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void AudioStreamPlayer2D::set_autoplay(bool p_enable) {
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autoplay = p_enable;
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}
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bool AudioStreamPlayer2D::is_autoplay_enabled() {
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return autoplay;
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}
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void AudioStreamPlayer2D::_set_playing(bool p_enable) {
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if (p_enable) {
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play();
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} else {
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stop();
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}
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}
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bool AudioStreamPlayer2D::_is_active() const {
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return active.is_set();
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}
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void AudioStreamPlayer2D::_validate_property(PropertyInfo &property) const {
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if (property.name == "bus") {
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String options;
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for (int i = 0; i < AudioServer::get_singleton()->get_bus_count(); i++) {
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if (i > 0) {
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options += ",";
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}
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String name = AudioServer::get_singleton()->get_bus_name(i);
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options += name;
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}
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property.hint_string = options;
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}
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}
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void AudioStreamPlayer2D::_bus_layout_changed() {
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_change_notify();
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}
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void AudioStreamPlayer2D::set_max_distance(float p_pixels) {
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ERR_FAIL_COND(p_pixels <= 0.0);
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max_distance = p_pixels;
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}
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float AudioStreamPlayer2D::get_max_distance() const {
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return max_distance;
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}
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void AudioStreamPlayer2D::set_attenuation(float p_curve) {
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attenuation = p_curve;
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}
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float AudioStreamPlayer2D::get_attenuation() const {
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return attenuation;
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}
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void AudioStreamPlayer2D::set_area_mask(uint32_t p_mask) {
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area_mask = p_mask;
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}
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uint32_t AudioStreamPlayer2D::get_area_mask() const {
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return area_mask;
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}
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void AudioStreamPlayer2D::set_stream_paused(bool p_pause) {
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if (p_pause != stream_paused) {
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stream_paused = p_pause;
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stream_paused_fade_in = !p_pause;
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stream_paused_fade_out = p_pause;
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}
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}
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bool AudioStreamPlayer2D::get_stream_paused() const {
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return stream_paused;
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}
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Ref<AudioStreamPlayback> AudioStreamPlayer2D::get_stream_playback() {
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return stream_playback;
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}
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void AudioStreamPlayer2D::set_panning_strength(float p_panning_strength) {
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ERR_FAIL_COND_MSG(p_panning_strength < 0, "Panning strength must be a positive number.");
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panning_strength = p_panning_strength;
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}
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float AudioStreamPlayer2D::get_panning_strength() const {
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return panning_strength;
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}
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void AudioStreamPlayer2D::_bind_methods() {
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ClassDB::bind_method(D_METHOD("set_stream", "stream"), &AudioStreamPlayer2D::set_stream);
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ClassDB::bind_method(D_METHOD("get_stream"), &AudioStreamPlayer2D::get_stream);
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ClassDB::bind_method(D_METHOD("set_volume_db", "volume_db"), &AudioStreamPlayer2D::set_volume_db);
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ClassDB::bind_method(D_METHOD("get_volume_db"), &AudioStreamPlayer2D::get_volume_db);
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ClassDB::bind_method(D_METHOD("set_pitch_scale", "pitch_scale"), &AudioStreamPlayer2D::set_pitch_scale);
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ClassDB::bind_method(D_METHOD("get_pitch_scale"), &AudioStreamPlayer2D::get_pitch_scale);
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ClassDB::bind_method(D_METHOD("play", "from_position"), &AudioStreamPlayer2D::play, DEFVAL(0.0));
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ClassDB::bind_method(D_METHOD("seek", "to_position"), &AudioStreamPlayer2D::seek);
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ClassDB::bind_method(D_METHOD("stop"), &AudioStreamPlayer2D::stop);
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ClassDB::bind_method(D_METHOD("is_playing"), &AudioStreamPlayer2D::is_playing);
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ClassDB::bind_method(D_METHOD("get_playback_position"), &AudioStreamPlayer2D::get_playback_position);
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ClassDB::bind_method(D_METHOD("set_bus", "bus"), &AudioStreamPlayer2D::set_bus);
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ClassDB::bind_method(D_METHOD("get_bus"), &AudioStreamPlayer2D::get_bus);
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ClassDB::bind_method(D_METHOD("set_autoplay", "enable"), &AudioStreamPlayer2D::set_autoplay);
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ClassDB::bind_method(D_METHOD("is_autoplay_enabled"), &AudioStreamPlayer2D::is_autoplay_enabled);
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ClassDB::bind_method(D_METHOD("_set_playing", "enable"), &AudioStreamPlayer2D::_set_playing);
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ClassDB::bind_method(D_METHOD("_is_active"), &AudioStreamPlayer2D::_is_active);
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ClassDB::bind_method(D_METHOD("set_max_distance", "pixels"), &AudioStreamPlayer2D::set_max_distance);
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ClassDB::bind_method(D_METHOD("get_max_distance"), &AudioStreamPlayer2D::get_max_distance);
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ClassDB::bind_method(D_METHOD("set_attenuation", "curve"), &AudioStreamPlayer2D::set_attenuation);
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ClassDB::bind_method(D_METHOD("get_attenuation"), &AudioStreamPlayer2D::get_attenuation);
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ClassDB::bind_method(D_METHOD("set_area_mask", "mask"), &AudioStreamPlayer2D::set_area_mask);
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ClassDB::bind_method(D_METHOD("get_area_mask"), &AudioStreamPlayer2D::get_area_mask);
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ClassDB::bind_method(D_METHOD("set_stream_paused", "pause"), &AudioStreamPlayer2D::set_stream_paused);
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ClassDB::bind_method(D_METHOD("get_stream_paused"), &AudioStreamPlayer2D::get_stream_paused);
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ClassDB::bind_method(D_METHOD("set_panning_strength", "panning_strength"), &AudioStreamPlayer2D::set_panning_strength);
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ClassDB::bind_method(D_METHOD("get_panning_strength"), &AudioStreamPlayer2D::get_panning_strength);
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ClassDB::bind_method(D_METHOD("get_stream_playback"), &AudioStreamPlayer2D::get_stream_playback);
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ClassDB::bind_method(D_METHOD("_bus_layout_changed"), &AudioStreamPlayer2D::_bus_layout_changed);
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ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "stream", PROPERTY_HINT_RESOURCE_TYPE, "AudioStream"), "set_stream", "get_stream");
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ADD_PROPERTY(PropertyInfo(Variant::REAL, "volume_db", PROPERTY_HINT_RANGE, "-80,24"), "set_volume_db", "get_volume_db");
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ADD_PROPERTY(PropertyInfo(Variant::REAL, "pitch_scale", PROPERTY_HINT_RANGE, "0.01,4,0.01,or_greater"), "set_pitch_scale", "get_pitch_scale");
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "playing", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_EDITOR), "_set_playing", "is_playing");
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "autoplay"), "set_autoplay", "is_autoplay_enabled");
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "stream_paused", PROPERTY_HINT_NONE, ""), "set_stream_paused", "get_stream_paused");
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ADD_PROPERTY(PropertyInfo(Variant::REAL, "max_distance", PROPERTY_HINT_EXP_RANGE, "1,4096,1,or_greater"), "set_max_distance", "get_max_distance");
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ADD_PROPERTY(PropertyInfo(Variant::REAL, "attenuation", PROPERTY_HINT_EXP_EASING, "attenuation"), "set_attenuation", "get_attenuation");
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ADD_PROPERTY(PropertyInfo(Variant::REAL, "panning_strength", PROPERTY_HINT_RANGE, "0,3,0.01,or_greater"), "set_panning_strength", "get_panning_strength");
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ADD_PROPERTY(PropertyInfo(Variant::STRING, "bus", PROPERTY_HINT_ENUM, ""), "set_bus", "get_bus");
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ADD_PROPERTY(PropertyInfo(Variant::INT, "area_mask", PROPERTY_HINT_LAYERS_2D_PHYSICS), "set_area_mask", "get_area_mask");
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ADD_SIGNAL(MethodInfo("finished"));
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}
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AudioStreamPlayer2D::AudioStreamPlayer2D() {
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volume_db = 0;
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pitch_scale = 1.0;
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autoplay = false;
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setseek.set(-1);
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prev_output_count = 0;
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max_distance = 2000;
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attenuation = 1;
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setplay.set(-1);
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area_mask = 1;
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stream_paused = false;
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stream_paused_fade_in = false;
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stream_paused_fade_out = false;
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AudioServer::get_singleton()->connect("bus_layout_changed", this, "_bus_layout_changed");
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cached_global_panning_strength = ProjectSettings::get_singleton()->get("audio/2d_panning_strength");
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}
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AudioStreamPlayer2D::~AudioStreamPlayer2D() {
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}
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