Sara/behaviour-tree-test
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Add Listener2D

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This commit is contained in:
kobewi 2020-12-31 21:34:09 +01:00
parent 4d08a737fb
commit f2cb0a8d4b
10 changed files with 252 additions and 18 deletions
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21
scene/2d/audio_stream_player_2d.cpp
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@ -31,6 +31,7 @@
#include "audio_stream_player_2d.h"
#include "scene/2d/area_2d.h"
#include "scene/2d/listener_2d.h"
#include "scene/main/window.h"
void AudioStreamPlayer2D::_notification(int p_what) {
@ -138,13 +139,22 @@ void AudioStreamPlayer2D::_update_panning() {
continue;
}
//compute matrix to convert to screen
Transform2D to_screen = vp->get_global_canvas_transform() * vp->get_canvas_transform();
Vector2 screen_size = vp->get_visible_rect().size;
Vector2 listener_in_global;
Vector2 relative_to_listener;
//screen in global is used for attenuation
Vector2 screen_in_global = to_screen.affine_inverse().xform(screen_size * 0.5);
Listener2D *listener = vp->get_listener_2d();
if (listener) {
listener_in_global = listener->get_global_position();
relative_to_listener = global_pos - listener_in_global;
} else {
Transform2D to_listener = vp->get_global_canvas_transform() * vp->get_canvas_transform();
listener_in_global = to_listener.affine_inverse().xform(screen_size * 0.5);
relative_to_listener = to_listener.xform(global_pos) - screen_size * 0.5;
}
float dist = global_pos.distance_to(screen_in_global); //distance to screen center
float dist = global_pos.distance_to(listener_in_global); // Distance to listener, or screen if none.
if (dist > max_distance) {
continue; //can't hear this sound in this viewport
@ -153,10 +163,7 @@ void AudioStreamPlayer2D::_update_panning() {
float multiplier = Math::pow(1.0f - dist / max_distance, attenuation);
multiplier *= Math::db2linear(volume_db); //also apply player volume!
//point in screen is used for panning
Vector2 point_in_screen = to_screen.xform(global_pos);
float pan = CLAMP(point_in_screen.x / screen_size.width, 0.0, 1.0);
float pan = CLAMP((relative_to_listener.x + screen_size.x * 0.5) / screen_size.x, 0.0, 1.0);
float l = 1.0 - pan;
float r = pan;