51 lines
1.3 KiB
Java
51 lines
1.3 KiB
Java
package mindustry.game;
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import arc.audio.*;
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import arc.math.*;
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import arc.util.*;
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/** A simple class for playing a looping sound at a position.*/
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public class SoundLoop{
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private static final float fadeSpeed = 0.05f;
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private final Sound sound;
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private int id = -1;
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private float volume, baseVolume;
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public SoundLoop(Sound sound, float baseVolume){
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this.sound = sound;
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this.baseVolume = baseVolume;
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}
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public void update(float x, float y, boolean play){
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if(baseVolume < 0) return;
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if(id < 0){
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if(play){
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id = sound.loop(sound.calcVolume(x, y) * volume * baseVolume, 1f, sound.calcPan(x, y));
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}
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}else{
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//fade the sound in or out
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if(play){
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volume = Mathf.clamp(volume + fadeSpeed * Time.delta());
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}else{
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volume = Mathf.clamp(volume - fadeSpeed * Time.delta());
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if(volume <= 0.001f){
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sound.stop(id);
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id = -1;
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return;
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}
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}
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sound.setPan(id, sound.calcPan(x, y), sound.calcVolume(x, y) * volume * baseVolume);
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}
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}
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public void stop(){
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if(id != -1){
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sound.stop(id);
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id = -1;
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volume = baseVolume = -1;
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}
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}
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}
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