bearmetalpacker/server/resources/readers.ts

import { encodeBase64 } from "@std/encoding/base64";
import { readDirFiles } from "../util/readDir.ts";
import { createIsometricCube } from "./renderer.ts";

export const readBlocks = async (path: string, read?: (b: BlockItem, i: number) => void) => {
  const blocks: BlockItem[] =
    (await readDirFiles(path + "/assets/minecraft/blockstates"))
      .map((b) => ({
        name: b.replace(".json", ""),
        resourceLocation: "minecraft:" + b.replace(".json", ""),
        images: [],
      }));

  const blockTextures = await readDirFiles(
    path + "/assets/minecraft/textures/block",
  );

  const modelPath = path + "/assets/minecraft/models/block";
  for (const block of blocks) {
    let name = block.name;
    if (
      block.name.startsWith("air") ||
      block.name.startsWith("void_air") ||
      block.name.startsWith("cave_air") ||
      block.name.startsWith("end_gateway") ||
      block.name.endsWith("_door") ||
      block.name.endsWith("_trapdoor") ||
      block.name.endsWith("_banner") ||
      block.name.endsWith("_fence_gate") ||
      block.name.endsWith("_pressure_plate") ||
      block.name.endsWith("_button") ||
      block.name.endsWith("lever") ||
      block.name.endsWith("_sign") ||
      block.name.endsWith("torch") ||
      block.name.endsWith("_fence") ||
      block.name.endsWith("_wall") ||
      block.name.endsWith("_skull") ||
      block.name.endsWith("_head") ||
      block.name.includes("bubble_column") ||
      block.name.includes("tripwire_hook") ||
      block.name.includes("tripwire") ||
      block.name == undefined ||
      block.name.includes("chest") ||
      block.name.includes("command")
    ) continue;
    if (block.name.includes("water") || block.name.includes("lava")) {
      const what = block.name.includes("water") ? "water" : "lava";
      const itemTexLoc = path +
        `/assets/minecraft/textures/block/${what}_still.png`;
      const itemImage = await Deno.readFile(itemTexLoc);
      block.images.push("data:image/png;base64," + encodeBase64(itemImage));
      continue;
    }
    if (block.name === "nether_portal") {
      const itemTexLoc = path +
        `/assets/minecraft/textures/block/nether_portal.png`;
      const itemImage = await Deno.readFile(itemTexLoc);
      block.images.push("data:image/png;base64," + encodeBase64(itemImage));
      continue;
    }
    if (["fire", "soul_fire"].includes(block.name)) {
      const itemTexLoc = path +
        `/assets/minecraft/textures/block/${block.name}_0.png`;
      const itemImage = await Deno.readFile(itemTexLoc);
      block.images.push("data:image/png;base64," + encodeBase64(itemImage));
      continue;
    }
    if (block.name.includes("cake")) {
      const itemTexLoc = path +
        `/assets/minecraft/textures/item/cake.png`;
      const itemImage = await Deno.readFile(itemTexLoc);
      block.images.push("data:image/png;base64," + encodeBase64(itemImage));
      continue;
    }
    if (block.name.endsWith("_bed")) {
      const itemTexLoc = path + "/assets/minecraft/textures/entity/bed/" +
        block.name.replace(/_bed$/, "") + ".png";
      const itemImage = await Deno.readFile(itemTexLoc);
      block.images.push("data:image/png;base64," + encodeBase64(itemImage));
      continue;
    }
    if (block.name === "nether_portal") {
      const itemTexLoc = path +
        `/assets/minecraft/textures/block/nether_portal.png`;
      const itemImage = await Deno.readFile(itemTexLoc);
      block.images.push("data:image/png;base64," + encodeBase64(itemImage));
      continue;
    }
    if (block.name.includes("dripleaf") && !block.name.includes("stem")) {
      const itemTexLoc = path +
        `/assets/minecraft/textures/block/${block.name}_top.png`;
      const itemImage = await Deno.readFile(itemTexLoc);
      block.images.push("data:image/png;base64," + encodeBase64(itemImage));
      continue;
    }
    if (
      [
        "carrots",
        "potatoes",
        "wheat",
        "beetroots",
        "grass",
        "kelp",
        "light",
        "bell",
        "redstone_wire",
        "sweet_berry_bush",
        "cocoa",
        "nether_wart",
        "repeater",
        "bamboo",
        "pitcher_plant",
        "campfire",
        "soul_campfire",
      ].includes(block.name)
    ) {
      const itemTexLoc = path + "/assets/minecraft/textures/item/" +
        block.name
          .replace("large_fern", "fern")
          .replace("tall_seagrass", "seagrass")
          .replace(/ss$/, "?")
          .replace(/e?s$/, "")
          .replace("?", "ss")
          .replace("_bush", "")
          .replace("berry", "berries")
          .replace("cocoa", "cocoa_beans")
          .replace("_wire", "") +
        ".png";
      const itemImage = await Deno.readFile(itemTexLoc);
      block.images.push("data:image/png;base64," + encodeBase64(itemImage));
      continue;
    }
    if (
      [
        "melon_stem",
        "pumpkin_stem",
        "fern",
        "large_fern",
        "lilac",
        "azure_bluet",
        "red_tulip",
        "orange_tulip",
        "pink_tulip",
        "white_tulip",
        "oxeye_daisy",
        "cornflower",
        "lily_of_the_valley",
        "wither_rose",
        "rose_bush",
        "peony",
        "sunflower",
        "torchflower_crop",
        "suspicious_sand",
        "suspicious_gravel",
        "scaffolding",
        "respawn_anchor",
        "short_grass",
        "tall_grass",
        "seagrass",
        "tall_seagrass",
        "frosted_ice",
        "pitcher_crop",
        "iron_bars",
      ].includes(block.name)
    ) {
      const textures = blockTextures.filter((t) => t.includes(block.name))
        .reverse().filter((t) => !t.endsWith("mcmeta"));
      const itemTexLoc = path + "/assets/minecraft/textures/block/" +
        textures[0];
      const itemImage = await Deno.readFile(itemTexLoc);
      block.images.push("data:image/png;base64," + encodeBase64(itemImage));
      continue;
    }
    if (block.name.startsWith("waxed")) {
      name = block.name.replace(/^waxed_?/, "");
    }
    if (block.name.startsWith("infested")) {
      name = block.name.replace(/^infested_?/, "");
    }
    if (block.name.endsWith("_pane")) {
      name = block.name.replace(/_pane$/, "");
    }
    if (block.name === "pink_petals") {
      name = "pink_petals_4";
    }
    if (block.name.includes("candle")) {
      const itemTexLoc = path +
        `/assets/minecraft/textures/item/${block.name}.png`;
      const itemImage = await Deno.readFile(itemTexLoc);
      block.images.push("data:image/png;base64," + encodeBase64(itemImage));
      continue;
    }
    if (block.name.includes("cauldron")) {
      const textures = blockTextures.filter((t) => t.includes("cauldron"));
      for (const texture of textures) {
        const texLoc = texture.replace("minecraft:", "");
        const image = await Deno.readFile(
          path + "/assets/minecraft/textures/block/" + texLoc,
        );
        const b64 = "data:image/png;base64," + encodeBase64(image);
        block.images.push(await createIsometricCube(b64, b64, b64));
      }
      continue;
    }
    if (block.name === "snow") {
      name = "snow_height2";
    }
    const data = await Deno.readTextFile(
      modelPath + "/" + name + ".json",
    );
    const modelJson = JSON.parse(data);
    if (modelJson.textures && !modelJson.elements) {
      if (modelJson.textures.all) {
        const texLoc = modelJson.textures.all;
        const image = await Deno.readFile(
          path + "/assets/minecraft/textures/" + texLoc.replace(
            "minecraft:",
            "",
          ) + ".png",
        );
        const b64 = "data:image/png;base64," + encodeBase64(image);
        block.images.push(await createIsometricCube(b64, b64, b64));
        continue;
      }
      if (modelJson.textures.front) {
        const frontImage = await Deno.readFile(
          path + "/assets/minecraft/textures/" +
            modelJson.textures.front.replace(
              "minecraft:",
              "",
            ) + ".png",
        );

        const frontB64 = "data:image/png;base64," + encodeBase64(frontImage);

        const topImage = await Deno.readFile(
          path + "/assets/minecraft/textures/" +
            (modelJson.textures.top ?? modelJson.textures.side).replace(
              "minecraft:",
              "",
            ) + ".png",
        );

        const topB64 = "data:image/png;base64," + encodeBase64(topImage);

        const sideImage = await Deno.readFile(
          path + "/assets/minecraft/textures/" +
            modelJson.textures.side.replace(
              "minecraft:",
              "",
            ) + ".png",
        );

        const sideB64 = "data:image/png;base64," + encodeBase64(sideImage);
        block.images.push(await createIsometricCube(frontB64, sideB64, topB64));
        continue;
      }
      if (modelJson.textures.side) {
        const sideImage = await Deno.readFile(
          path + "/assets/minecraft/textures/" +
            modelJson.textures.side.replace(
              "minecraft:",
              "",
            ) + ".png",
        );

        const sideB64 = "data:image/png;base64," + encodeBase64(sideImage);

        const topImage = await Deno.readFile(
          path + "/assets/minecraft/textures/" +
            (modelJson.textures.top ?? modelJson.textures.bottom ??
              modelJson.textures.side).replace(
                "minecraft:",
                "",
              ) +
            ".png",
        );

        const topB64 = "data:image/png;base64," + encodeBase64(topImage);
        block.images.push(await createIsometricCube(sideB64, sideB64, topB64));
        continue;
      }
    }
    const textures = blockTextures.filter((t) =>
      t.includes(block.name) && !t.includes("mcmeta")
    );

    for (const texture of textures) {
      const texLoc = texture.replace("minecraft:", "");
      const image = await Deno.readFile(
        path + "/assets/minecraft/textures/block/" + texLoc,
      );
      const b64 = "data:image/png;base64," + encodeBase64(image);
      block.images.push(await createIsometricCube(b64, b64, b64));
    }
  }

  let i = 0;
  for (const block of blocks) {
    read?.(block, i);
    i++;
  }
  return blocks;
};

export const readItems = async (path: string, read?: (b: BlockItem) => void) => {
  const items: BlockItem[] =
    (await readDirFiles(path + "/assets/minecraft/models/item")).map((i) => ({
      name: i.replace(".json", ""),
      resourceLocation: "minecraft:" + i.replace(".json", ""),
      images: [],
    }));

  for (const item of items) {
    let name = item.name;
    if (item.name.startsWith("air")) continue;
    if (item.name.startsWith("waxed")) name = item.name.replace(/^waxed_?/, "");

    const data = await Deno.readFile(
      path + "/assets/minecraft/models/item/" + name + ".json",
    );
    const json = JSON.parse(new TextDecoder().decode(data));
    const texDir = path + "/assets/minecraft/textures/";
    if (json.textures) {
      const texLoc = json.textures.layer0;
      if (texLoc) {
        const data = await Deno.readFile(
          texDir + texLoc.replace("minecraft:", "") + ".png",
        );
        item.images.push("data:image/png;base64," + encodeBase64(data));
      }
    } else if (json.parent) {
      const parent = await Deno.readFile(
        path + "/assets/minecraft/models/" +
          json.parent.replace("minecraft:", "") + ".json",
      );
      const parentJson = JSON.parse(new TextDecoder().decode(parent));
      if (parentJson.textures) {
        let texLoc = parentJson.textures.all;
        if (!texLoc) texLoc = parentJson.textures.side;
        if (!texLoc) texLoc = parentJson.textures.top;
        if (!texLoc) texLoc = parentJson.textures.bottom;
        if (texLoc) {
          const data = await Deno.readFile(
            texDir + texLoc.replace("minecraft:", "") + ".png",
          );
          item.images.push("data:image/png;base64," + encodeBase64(data));
        }
      }
    }
    read?.(item);
  }

  return items;
};

if (import.meta.main) {
  const path = "./resources/1.21.1";
  console.log(await readItems(path));
}