143 lines
4.2 KiB
Java
143 lines
4.2 KiB
Java
package net.minecraft.client.sounds;
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import net.fabricmc.api.EnvType;
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import net.fabricmc.api.Environment;
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import net.minecraft.client.Minecraft;
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import net.minecraft.client.resources.sounds.SimpleSoundInstance;
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import net.minecraft.client.resources.sounds.SoundInstance;
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import net.minecraft.sounds.Music;
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import net.minecraft.util.Mth;
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import net.minecraft.util.RandomSource;
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import org.jetbrains.annotations.Nullable;
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/**
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* The MusicManager class manages the playing of music in Minecraft.
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*/
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@Environment(EnvType.CLIENT)
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public class MusicManager {
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/**
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* The delay before starting to play the next song.
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*/
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private static final int STARTING_DELAY = 100;
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private final RandomSource random = RandomSource.create();
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private final Minecraft minecraft;
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@Nullable
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private SoundInstance currentMusic;
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private float currentGain = 1.0F;
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/**
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* The delay until the next song starts.
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*/
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private int nextSongDelay = 100;
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public MusicManager(Minecraft minecraft) {
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this.minecraft = minecraft;
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}
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/**
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* Called every tick to manage the playing of music.
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*/
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public void tick() {
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MusicInfo musicInfo = this.minecraft.getSituationalMusic();
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float f = musicInfo.volume();
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if (this.currentMusic != null && this.currentGain != f) {
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boolean bl = this.fadePlaying(f);
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if (!bl) {
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return;
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}
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}
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Music music = musicInfo.music();
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if (music == null) {
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this.nextSongDelay = Math.max(this.nextSongDelay, 100);
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} else {
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if (this.currentMusic != null) {
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if (musicInfo.canReplace(this.currentMusic)) {
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this.minecraft.getSoundManager().stop(this.currentMusic);
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this.nextSongDelay = Mth.nextInt(this.random, 0, music.getMinDelay() / 2);
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}
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if (!this.minecraft.getSoundManager().isActive(this.currentMusic)) {
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this.currentMusic = null;
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this.nextSongDelay = Math.min(this.nextSongDelay, Mth.nextInt(this.random, music.getMinDelay(), music.getMaxDelay()));
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}
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}
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this.nextSongDelay = Math.min(this.nextSongDelay, music.getMaxDelay());
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if (this.currentMusic == null && this.nextSongDelay-- <= 0) {
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this.startPlaying(musicInfo);
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}
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}
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}
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public void startPlaying(MusicInfo music) {
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this.currentMusic = SimpleSoundInstance.forMusic(music.music().getEvent().value());
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if (this.currentMusic.getSound() != SoundManager.EMPTY_SOUND) {
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this.minecraft.getSoundManager().play(this.currentMusic);
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this.minecraft.getSoundManager().setVolume(this.currentMusic, music.volume());
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}
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this.nextSongDelay = Integer.MAX_VALUE;
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this.currentGain = music.volume();
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}
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/**
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* Stops playing the specified {@linkplain Music} selector.
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*
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* @param music the {@linkplain Music} selector to stop playing
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*/
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public void stopPlaying(Music music) {
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if (this.isPlayingMusic(music)) {
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this.stopPlaying();
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}
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}
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/**
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* Stops playing the current {@linkplain Music} selector.
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*/
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public void stopPlaying() {
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if (this.currentMusic != null) {
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this.minecraft.getSoundManager().stop(this.currentMusic);
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this.currentMusic = null;
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}
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this.nextSongDelay += 100;
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}
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private boolean fadePlaying(float volume) {
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if (this.currentMusic == null) {
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return false;
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} else if (this.currentGain == volume) {
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return true;
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} else {
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if (this.currentGain < volume) {
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this.currentGain = this.currentGain + Mth.clamp(this.currentGain, 5.0E-4F, 0.005F);
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if (this.currentGain > volume) {
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this.currentGain = volume;
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}
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} else {
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this.currentGain = 0.03F * volume + 0.97F * this.currentGain;
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if (Math.abs(this.currentGain - volume) < 1.0E-4F || this.currentGain < volume) {
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this.currentGain = volume;
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}
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}
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this.currentGain = Mth.clamp(this.currentGain, 0.0F, 1.0F);
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if (this.currentGain <= 1.0E-4F) {
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this.stopPlaying();
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return false;
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} else {
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this.minecraft.getSoundManager().setVolume(this.currentMusic, this.currentGain);
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return true;
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}
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}
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}
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/**
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* {@return {@code true} if the {@linkplain Music} selector is currently playing, {@code false} otherwise}
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*
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* @param selector the {@linkplain Music} selector to check for
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*/
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public boolean isPlayingMusic(Music selector) {
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return this.currentMusic == null ? false : selector.getEvent().value().location().equals(this.currentMusic.getLocation());
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}
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}
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