CameraLockMod

package eu.codexe.cameralock.client;

import eu.codexe.cameralock.client.gui.TargetSearchScreen;
import eu.codexe.cameralock.client.util.ChatUtil;
import eu.codexe.cameralock.client.util.TargetResolver;
import net.minecraft.client.Minecraft;
import net.minecraft.client.player.LocalPlayer;
import net.minecraft.world.entity.Entity;
import net.minecraft.world.entity.player.Player;
import net.minecraftforge.eventbus.api.SubscribeEvent;
import net.minecraftforge.client.event.ViewportEvent;

public class CameraLockController {
    private static CameraLockController instance;

    private final Minecraft minecraft = Minecraft.getInstance();
    private boolean locked;
    private String targetName;
    private int targetEntityId = -1;

    public CameraLockController() {
        instance = this;
    }

    public static CameraLockController getInstance() {
        if (instance == null) {
            instance = new CameraLockController();
        }
        return instance;
    }

    public void toggleLock() {
        locked = !locked;
        if (!locked) {
            targetEntityId = -1;
            ChatUtil.showClientMessage("message.cameralock.disabled");
        } else if (targetEntityId != -1) {
            ChatUtil.showClientMessage("message.cameralock.enabled");
        } else {
            ChatUtil.showClientMessage("message.cameralock.no_target");
        }
    }

    public void beginSearch() {
        if (minecraft.screen instanceof TargetSearchScreen) {
            return;
        }
        minecraft.setScreen(new TargetSearchScreen(this));
    }

    public void lockOnPlayer(String name) {
        this.targetName = name;
        Entity target = TargetResolver.findPlayerByName(minecraft.level, name);
        if (target != null) {
            targetEntityId = target.getId();
            locked = true;
            ChatUtil.showFormattedMessage("message.cameralock.target_locked", name);
        } else {
            targetEntityId = -1;
            locked = false;