From 91bb1d75ffdf56f8602d94b61ec2879bc53d7275 Mon Sep 17 00:00:00 2001
From: Vitaly Turovsky <vital2580@icloud.com>
Date: Fri, 15 Sep 2023 04:49:20 +0300
Subject: [PATCH] add blocks generate script for resourcepack

---
 .gitignore                         |  1 +
 package.json                       |  3 +-
 scripts/gen-texturepack-files.mjs  | 51 ++++++++++++++++++++++++++++++
 scripts/test-texturepack-files.mjs | 16 ++++++++++
 4 files changed, 70 insertions(+), 1 deletion(-)
 create mode 100644 scripts/gen-texturepack-files.mjs
 create mode 100644 scripts/test-texturepack-files.mjs

diff --git a/.gitignore b/.gitignore
index 950306c9..131dc688 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,3 +14,4 @@ world
 out
 *.iml
 .vercel
+generated
diff --git a/package.json b/package.json
index a947d7a1..95bde096 100644
--- a/package.json
+++ b/package.json
@@ -10,6 +10,7 @@
     "test:cypress": "cypress run",
     "test:e2e": "start-test http-get://localhost:8080 test:cypress",
     "prod-start": "node server.js",
+    "postinstall": "node scripts/gen-texturepack-files.mjs",
     "prepublishOnly": "npm run build"
   },
   "keywords": [
@@ -104,7 +105,7 @@
     "overrides": {
       "prismarine-block": "github:zardoy/prismarine-block#next-era",
       "prismarine-world": "github:zardoy/prismarine-world#next-era",
-      "minecraft-data": "latest",
+      "minecraft-data": "3.45.0",
       "prismarine-provider-anvil": "github:zardoy/prismarine-provider-anvil#everything",
       "minecraft-protocol": "github:zardoy/minecraft-protocol#custom-client-extra"
     }
diff --git a/scripts/gen-texturepack-files.mjs b/scripts/gen-texturepack-files.mjs
new file mode 100644
index 00000000..ccac9569
--- /dev/null
+++ b/scripts/gen-texturepack-files.mjs
@@ -0,0 +1,51 @@
+//@ts-check
+import fs from 'fs'
+import minecraftAssets from 'minecraft-assets'
+
+// why store another data?
+// 1. want to make it compatible (at least for now)
+// 2. don't want to read generated blockStates as it might change in future, and the current way was faster to implement
+
+const blockNames = []
+const indexesPerVersion = {}
+/** @type {Map<string, number>} */
+const allBlocksMap = new Map()
+const getBlockIndex = (block) => {
+    if (allBlocksMap.has(block)) {
+        return allBlocksMap.get(block)
+    }
+
+    const index = blockNames.length
+    allBlocksMap.set(block, index)
+    blockNames.push(block)
+    return index
+}
+
+// const blocksFull = []
+// const allBlocks = []
+// // we can even optimize it even futher by doing prev-step resolving
+// const blocksDiff = {}
+
+for (const [i, version] of minecraftAssets.versions.reverse().entries()) {
+    const assets = minecraftAssets(version)
+    const blocksDir = assets.directory + '/blocks'
+    const blocks = fs.readdirSync(blocksDir)
+    indexesPerVersion[version] = blocks.map(block => {
+        if (!block.endsWith('.png')) return undefined
+        return getBlockIndex(block)
+    }).filter(i => i !== undefined)
+
+    // if (!blocksFull.length) {
+    //     // first iter
+    //     blocksFull.push(...blocks)
+    // } else {
+    //     const missing = blocksFull.map((b, i) => !blocks.includes(b) ? i : -1).filter(i => i !== -1)
+    //     const added = blocks.filter(b => !blocksFull.includes(b))
+    //     blocksDiff[version] = {
+    //         missing,
+    //         added
+    //     }
+    // }
+}
+
+fs.writeFileSync('./generated/blocks.json', JSON.stringify({ blockNames: blockNames, indexes: indexesPerVersion }))
diff --git a/scripts/test-texturepack-files.mjs b/scripts/test-texturepack-files.mjs
new file mode 100644
index 00000000..0446a2fe
--- /dev/null
+++ b/scripts/test-texturepack-files.mjs
@@ -0,0 +1,16 @@
+import fs from 'fs'
+import minecraftAssets from 'minecraft-assets'
+
+const gen = JSON.parse(fs.readFileSync('./blocks.json', 'utf8'))
+
+const version = '1.8.8'
+const { blockNames, indexes } = gen
+
+const blocksActual = indexes[version].map((i) => blockNames[i])
+
+const blocksExpected = fs.readdirSync(minecraftAssets(version).directory + '/blocks')
+for (const [i, item] of blocksActual.entries()) {
+    if (item !== blocksExpected[i]) {
+        console.log('not equal at', i)
+    }
+}