EntityListScreen.java

package exonihility.client.gui;

import net.minecraft.client.gui.DrawContext;
import net.minecraft.client.gui.screen.Screen;
import net.minecraft.client.gui.widget.ButtonWidget;
import net.minecraft.entity.Entity;
import net.minecraft.text.Text;

public class EntityListScreen extends Screen {

    private ScrollingEntityListWidget scrollingEntityList;
    private Text selectedEntityName = Text.empty();

    public EntityListScreen(Text title) {
        super(title);
    }

    @Override
    protected void init() {
        super.init();

        // Initialize the scrolling list widget
        scrollingEntityList = new ScrollingEntityListWidget(
                this.client, this.width, this.height, 20, this.height - 60, 40
        );

        // Add the widget to the screen
        this.addSelectableChild(scrollingEntityList);

        // Add "Confirm" button to save changes
        ButtonWidget confirmButton = ButtonWidget.builder(Text.literal("Confirm"), button -> {
                    Entity selectedEntity = scrollingEntityList.getSelectedEntity();
                    if (selectedEntity != null) {
                        // Perform an action with the selected entity
                        System.out.println("Selected Entity Position: " + selectedEntity.getBlockPos());
                    } else {
                        System.out.println("No entity selected.");
                    }
                })
                .dimensions(this.width / 2 - 20, 50, 200, 20)
                .build();
        addDrawableChild(confirmButton);

    }

    @Override
    public void tick() {
        scrollingEntityList.refreshList(); // Refresh the list periodically
    }

    @Override
    public void render(DrawContext context, int mouseX, int mouseY, float delta) {
        this.renderBackground(context, mouseX, mouseY, delta); // Render background
        scrollingEntityList.render(context, mouseX, mouseY, delta); // Render the scrolling widget

        // Draw the selected entity name
        Entity selectedEntity = scrollingEntityList.getSelectedEntity();
        if (selectedEntity != null) {
            selectedEntityName = Text.literal("Selected Entity: " + selectedEntity.getName().getString());
        } else {
            selectedEntityName = Text.literal("No Entity Selected");
        }

        context.drawCenteredTextWithShadow(this.textRenderer, selectedEntityName, this.width / 2, this.height - 20, 0xFFFFFF);

        super.render(context, mouseX, mouseY, delta);
    }

}