minecraft-src/net/minecraft/client/gui/components/SubtitleOverlay.java

package net.minecraft.client.gui.components;

import com.google.common.collect.Lists;
import com.mojang.blaze3d.audio.ListenerTransform;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.Iterator;
import java.util.List;
import net.fabricmc.api.EnvType;
import net.fabricmc.api.Environment;
import net.minecraft.Util;
import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.GuiGraphics;
import net.minecraft.client.resources.sounds.SoundInstance;
import net.minecraft.client.sounds.SoundEventListener;
import net.minecraft.client.sounds.SoundManager;
import net.minecraft.client.sounds.WeighedSoundEvents;
import net.minecraft.network.chat.Component;
import net.minecraft.util.ARGB;
import net.minecraft.util.Mth;
import net.minecraft.world.phys.Vec3;
import org.jetbrains.annotations.Nullable;

@Environment(EnvType.CLIENT)
public class SubtitleOverlay implements SoundEventListener {
	private static final long DISPLAY_TIME = 3000L;
	private final Minecraft minecraft;
	private final List<SubtitleOverlay.Subtitle> subtitles = Lists.<SubtitleOverlay.Subtitle>newArrayList();
	private boolean isListening;
	private final List<SubtitleOverlay.Subtitle> audibleSubtitles = new ArrayList();

	public SubtitleOverlay(Minecraft minecraft) {
		this.minecraft = minecraft;
	}

	public void render(GuiGraphics guiGraphics) {
		SoundManager soundManager = this.minecraft.getSoundManager();
		if (!this.isListening && this.minecraft.options.showSubtitles().get()) {
			soundManager.addListener(this);
			this.isListening = true;
		} else if (this.isListening && !this.minecraft.options.showSubtitles().get()) {
			soundManager.removeListener(this);
			this.isListening = false;
		}

		if (this.isListening) {
			ListenerTransform listenerTransform = soundManager.getListenerTransform();
			Vec3 vec3 = listenerTransform.position();
			Vec3 vec32 = listenerTransform.forward();
			Vec3 vec33 = listenerTransform.right();
			this.audibleSubtitles.clear();

			for (SubtitleOverlay.Subtitle subtitle : this.subtitles) {
				if (subtitle.isAudibleFrom(vec3)) {
					this.audibleSubtitles.add(subtitle);
				}
			}

			if (!this.audibleSubtitles.isEmpty()) {
				int i = 0;
				int j = 0;
				double d = this.minecraft.options.notificationDisplayTime().get();
				Iterator<SubtitleOverlay.Subtitle> iterator = this.audibleSubtitles.iterator();

				while (iterator.hasNext()) {
					SubtitleOverlay.Subtitle subtitle2 = (SubtitleOverlay.Subtitle)iterator.next();
					subtitle2.purgeOldInstances(3000.0 * d);
					if (!subtitle2.isStillActive()) {
						iterator.remove();
					} else {
						j = Math.max(j, this.minecraft.font.width(subtitle2.getText()));
					}
				}

				j += this.minecraft.font.width("<") + this.minecraft.font.width(" ") + this.minecraft.font.width(">") + this.minecraft.font.width(" ");
				if (!this.audibleSubtitles.isEmpty()) {
					guiGraphics.nextStratum();
				}

				for (SubtitleOverlay.Subtitle subtitle2 : this.audibleSubtitles) {
					int k = 255;
					Component component = subtitle2.getText();
					SubtitleOverlay.SoundPlayedAt soundPlayedAt = subtitle2.getClosest(vec3);
					if (soundPlayedAt != null) {
						Vec3 vec34 = soundPlayedAt.location.subtract(vec3).normalize();
						double e = vec33.dot(vec34);
						double f = vec32.dot(vec34);
						boolean bl = f > 0.5;
						int l = j / 2;
						int m = 9;
						int n = m / 2;
						float g = 1.0F;
						int o = this.minecraft.font.width(component);
						int p = Mth.floor(Mth.clampedLerp(255.0F, 75.0F, (float)(Util.getMillis() - soundPlayedAt.time) / (float)(3000.0 * d)));
						guiGraphics.pose().pushMatrix();
						guiGraphics.pose().translate(guiGraphics.guiWidth() - l * 1.0F - 2.0F, guiGraphics.guiHeight() - 35 - i * (m + 1) * 1.0F);
						guiGraphics.pose().scale(1.0F, 1.0F);
						guiGraphics.fill(-l - 1, -n - 1, l + 1, n + 1, this.minecraft.options.getBackgroundColor(0.8F));
						int q = ARGB.color(255, p, p, p);
						if (!bl) {
							if (e > 0.0) {
								guiGraphics.drawString(this.minecraft.font, ">", l - this.minecraft.font.width(">"), -n, q);
							} else if (e < 0.0) {
								guiGraphics.drawString(this.minecraft.font, "<", -l, -n, q);
							}
						}

						guiGraphics.drawString(this.minecraft.font, component, -o / 2, -n, q);
						guiGraphics.pose().popMatrix();
						i++;
					}
				}
			}
		}
	}

	@Override
	public void onPlaySound(SoundInstance sound, WeighedSoundEvents accessor, float range) {
		if (accessor.getSubtitle() != null) {
			Component component = accessor.getSubtitle();
			if (!this.subtitles.isEmpty()) {
				for (SubtitleOverlay.Subtitle subtitle : this.subtitles) {
					if (subtitle.getText().equals(component)) {
						subtitle.refresh(new Vec3(sound.getX(), sound.getY(), sound.getZ()));
						return;
					}
				}
			}

			this.subtitles.add(new SubtitleOverlay.Subtitle(component, range, new Vec3(sound.getX(), sound.getY(), sound.getZ())));
		}
	}

	@Environment(EnvType.CLIENT)
	record SoundPlayedAt(Vec3 location, long time) {
	}

	@Environment(EnvType.CLIENT)
	static class Subtitle {
		private final Component text;
		private final float range;
		private final List<SubtitleOverlay.SoundPlayedAt> playedAt = new ArrayList();

		public Subtitle(Component text, float range, Vec3 location) {
			this.text = text;
			this.range = range;
			this.playedAt.add(new SubtitleOverlay.SoundPlayedAt(location, Util.getMillis()));
		}

		public Component getText() {
			return this.text;
		}

		@Nullable
		public SubtitleOverlay.SoundPlayedAt getClosest(Vec3 location) {
			if (this.playedAt.isEmpty()) {
				return null;
			} else {
				return this.playedAt.size() == 1
					? (SubtitleOverlay.SoundPlayedAt)this.playedAt.getFirst()
					: (SubtitleOverlay.SoundPlayedAt)this.playedAt
						.stream()
						.min(Comparator.comparingDouble(soundPlayedAt -> soundPlayedAt.location().distanceTo(location)))
						.orElse(null);
			}
		}

		public void refresh(Vec3 location) {
			this.playedAt.removeIf(soundPlayedAt -> location.equals(soundPlayedAt.location()));
			this.playedAt.add(new SubtitleOverlay.SoundPlayedAt(location, Util.getMillis()));
		}

		public boolean isAudibleFrom(Vec3 location) {
			if (Float.isInfinite(this.range)) {
				return true;
			} else if (this.playedAt.isEmpty()) {
				return false;
			} else {
				SubtitleOverlay.SoundPlayedAt soundPlayedAt = this.getClosest(location);
				return soundPlayedAt == null ? false : location.closerThan(soundPlayedAt.location, this.range);
			}
		}

		public void purgeOldInstances(double displayTime) {
			long l = Util.getMillis();
			this.playedAt.removeIf(soundPlayedAt -> l - soundPlayedAt.time() > displayTime);
		}

		public boolean isStillActive() {
			return !this.playedAt.isEmpty();
		}
	}
}