96 lines
3 KiB
Java
96 lines
3 KiB
Java
package net.minecraft.world.item;
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import net.minecraft.core.BlockPos;
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import net.minecraft.core.Holder;
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import net.minecraft.core.particles.ParticleTypes;
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import net.minecraft.core.registries.Registries;
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import net.minecraft.server.level.ServerLevel;
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import net.minecraft.world.level.LevelAccessor;
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import net.minecraft.world.level.block.state.BlockState;
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import net.minecraft.world.level.gameevent.GameEvent;
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import net.minecraft.world.phys.Vec3;
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import org.jetbrains.annotations.Nullable;
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public class JukeboxSongPlayer {
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public static final int PLAY_EVENT_INTERVAL_TICKS = 20;
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private long ticksSinceSongStarted;
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@Nullable
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private Holder<JukeboxSong> song;
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private final BlockPos blockPos;
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private final JukeboxSongPlayer.OnSongChanged onSongChanged;
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public JukeboxSongPlayer(JukeboxSongPlayer.OnSongChanged onSongChanged, BlockPos blockPos) {
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this.onSongChanged = onSongChanged;
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this.blockPos = blockPos;
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}
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public boolean isPlaying() {
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return this.song != null;
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}
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@Nullable
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public JukeboxSong getSong() {
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return this.song == null ? null : this.song.value();
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}
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public long getTicksSinceSongStarted() {
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return this.ticksSinceSongStarted;
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}
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public void setSongWithoutPlaying(Holder<JukeboxSong> song, long ticksSinceSongStarted) {
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if (!song.value().hasFinished(ticksSinceSongStarted)) {
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this.song = song;
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this.ticksSinceSongStarted = ticksSinceSongStarted;
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}
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}
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public void play(LevelAccessor level, Holder<JukeboxSong> song) {
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this.song = song;
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this.ticksSinceSongStarted = 0L;
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int i = level.registryAccess().lookupOrThrow(Registries.JUKEBOX_SONG).getId(this.song.value());
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level.levelEvent(null, 1010, this.blockPos, i);
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this.onSongChanged.notifyChange();
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}
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public void stop(LevelAccessor level, @Nullable BlockState state) {
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if (this.song != null) {
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this.song = null;
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this.ticksSinceSongStarted = 0L;
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level.gameEvent(GameEvent.JUKEBOX_STOP_PLAY, this.blockPos, GameEvent.Context.of(state));
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level.levelEvent(1011, this.blockPos, 0);
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this.onSongChanged.notifyChange();
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}
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}
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public void tick(LevelAccessor level, @Nullable BlockState state) {
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if (this.song != null) {
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if (this.song.value().hasFinished(this.ticksSinceSongStarted)) {
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this.stop(level, state);
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} else {
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if (this.shouldEmitJukeboxPlayingEvent()) {
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level.gameEvent(GameEvent.JUKEBOX_PLAY, this.blockPos, GameEvent.Context.of(state));
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spawnMusicParticles(level, this.blockPos);
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}
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this.ticksSinceSongStarted++;
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}
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}
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}
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private boolean shouldEmitJukeboxPlayingEvent() {
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return this.ticksSinceSongStarted % 20L == 0L;
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}
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private static void spawnMusicParticles(LevelAccessor level, BlockPos pos) {
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if (level instanceof ServerLevel serverLevel) {
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Vec3 vec3 = Vec3.atBottomCenterOf(pos).add(0.0, 1.2F, 0.0);
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float f = level.getRandom().nextInt(4) / 24.0F;
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serverLevel.sendParticles(ParticleTypes.NOTE, vec3.x(), vec3.y(), vec3.z(), 0, f, 0.0, 0.0, 1.0);
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}
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}
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@FunctionalInterface
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public interface OnSongChanged {
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void notifyChange();
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}
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}
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