twodcraft/src/main/java/cz/jzitnik/tui/ScreenRenderer.java

package cz.jzitnik.tui;

import cz.jzitnik.game.entities.Block;
import cz.jzitnik.game.Game;
import cz.jzitnik.game.sprites.Steve;
import cz.jzitnik.game.blocks.Chest;
import cz.jzitnik.game.blocks.Furnace;
import cz.jzitnik.game.ui.Healthbar;
import cz.jzitnik.tui.utils.SpriteCombiner;
import lombok.Getter;
import lombok.Setter;
import org.jline.terminal.Terminal;

import java.util.ArrayList;
import java.util.List;
import java.util.Optional;

public class ScreenRenderer {
    private final SpriteList spriteList;
    private final Terminal terminal;

    public ScreenRenderer(SpriteList spriteList, Terminal terminal) {
        this.spriteList = spriteList;
        this.terminal = terminal;
    }

    @Getter
    @Setter
    private Optional<List<Integer>> selectedBlock = Optional.empty();

    private int[] getPlayerCords(List<Block>[][] world) {
        for (int i = 0; i < world.length; i++) {
            for (int j = 0; j < world[i].length; j++) {
                if (world[i][j].stream().anyMatch(x -> x.getBlockId().equals("steve") && x.getSpriteState().isPresent()
                        && x.getSpriteState().get() == Steve.SteveState.SECOND)) {
                    return new int[] { j, i };
                }
            }
        }
        return null;
    }

    public synchronized void render(Game game) {
        var world = game.getWorld();
        StringBuilder main = new StringBuilder();
        main.append("\033[H\033[2J");

        switch (game.getWindow()) {
            case INVENTORY -> game.getInventory().renderFull(main, terminal, spriteList, true, Optional.empty());
            case CRAFTING_TABLE -> game.getGameStates().craftingTable.render(main, terminal, spriteList);
            case CHEST -> ((Chest) game.getWorld()[game.getGameStates().clickY][game.getGameStates().clickX].stream()
                    .filter(i -> i.getBlockId().equals("chest")).toList().getFirst().getData()).render(game, main,
                            terminal, spriteList);
            case FURNACE -> ((Furnace) game.getWorld()[game.getGameStates().clickY][game.getGameStates().clickX]
                    .stream().filter(i -> i.getBlockId().equals("furnace")).toList().getFirst().getData()).render(game,
                            main, terminal, spriteList);
            case WORLD -> {
                // World

                int[] cords = getPlayerCords(world);
                if (cords == null)
                    return;

                int playerX = cords[0];
                int playerY = cords[1];

                int terminalWidth = terminal.getWidth();
                int terminalHeight = terminal.getHeight();

                int[] data = ScreenMovingCalculationProvider.calculate(playerX, playerY, terminalHeight, terminalWidth,
                        world[0].length, world.length);

                // Calculate visible area boundaries
                int startX = data[0];
                int endX = data[1];
                int startY = data[2];
                int endY = data[3];

                int visibleWidth = endX - startX;
                int visibleHeight = endY - startY;

                if (visibleWidth % 2 != 0) {
                    endX = Math.max(startX, endX - 1);
                }
                if (visibleHeight % 2 != 0) {
                    endY = Math.max(startY, endY - 1);
                }

                StringBuilder[] lines = new StringBuilder[(endY - startY) * 25 + 1];
                for (int i = 0; i < lines.length; i++) {
                    lines[i] = new StringBuilder();
                }

                int counter = 0;
                for (int y = startY; y < endY; y++) {
                    for (int x = startX; x < endX; x++) {
                        List<Block> blocks = world[y][x];
                        List<String> sprites = new ArrayList<>(blocks.stream()
                                .map(block -> block.getSpriteState().isEmpty()
                                        ? spriteList.getSprite(block.getSprite()).getSprite()
                                        : spriteList.getSprite(block.getSprite())
                                                .getSprite(block.getSpriteState().get()))
                                .toList());

                        if (selectedBlock.isPresent() && selectedBlock.get().get(0) == x
                                && selectedBlock.get().get(1) == y) {
                            StringBuilder stringBuilder = getStringBuilder();

                            sprites.add(stringBuilder.toString());
                        }

                        String sprite = SpriteCombiner.combineSprites(sprites.toArray(String[]::new));

                        String[] spriteLines = sprite.split("\n");

                        for (int i = 0; i < spriteLines.length; i++) {
                            lines[counter * 25 + i].append(spriteLines[i]).append("\033[0m");
                        }
                    }
                    counter++;
                }

                // World
                for (int i = 0; i < lines.length; i++) {
                    main.append(lines[i]);
                    if (i < lines.length - 1) {
                        main.append("\n");
                    }
                }

                // Empty space between world and hotbar
                main.append("\n\n\n");

                Healthbar.render(main, spriteList, terminal, game);

                game.getInventory().renderHotbar(main, spriteList, terminal, false);
            }
        }

        System.out.println(main);
    }

    private static StringBuilder getStringBuilder() {
        StringBuilder stringBuilder = new StringBuilder();

        stringBuilder.append("\033[38;5;231;48;5;231m▓".repeat(50));
        stringBuilder.append("\n");

        for (int i = 0; i < 23; i++) {
            stringBuilder.append("\033[38;5;231;48;5;231m▓");
            stringBuilder.append("\033[38;5;231;48;5;231m▓");
            stringBuilder.append("\033[0m ".repeat(46));
            stringBuilder.append("\033[38;5;231;48;5;231m▓");
            stringBuilder.append("\033[38;5;231;48;5;231m▓");
            stringBuilder.append("\n");
        }

        stringBuilder.append("\033[38;5;231;48;5;231m▓".repeat(50));
        stringBuilder.append("\n");
        return stringBuilder;
    }

}