adding support 1.13 new Material class with new Minecraft Items render for Menu Preview

scripts/generate-1.13-items.main.kts

@@ -0,0 +1,94 @@
+@file:DependsOn("io.ktor:ktor-client-core:1.4.0")
+@file:DependsOn("io.ktor:ktor-client-core-jvm:1.4.0")
+@file:DependsOn("io.ktor:ktor-client-apache:1.4.0")
+@file:DependsOn("io.ktor:ktor-client-json-jvm:1.4.0")
+@file:DependsOn("io.ktor:ktor-client-gson:1.4.0")
+
+@file:DependsOn("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.9")
+
+// HTML
+@file:DependsOn("it.skrape:skrapeit-core:1.0.0-alpha6")
+@file:DependsOn("io.github.rybalkinsd:kohttp:0.12.0")
+@file:DependsOn("org.jsoup:jsoup:1.13.1")
+
+// IMAGE RESIZE
+@file:DependsOn("com.sksamuel.scrimage:scrimage-core:4.0.6")
+@file:DependsOn("com.sksamuel.scrimage:scrimage-formats-extra:4.0.6")
+@file:DependsOn("ar.com.hjg:pngj:2.1.0")
+@file:DependsOn("com.github.zh79325:open-gif:1.0.4")
+
+import com.sksamuel.scrimage.ImmutableImage
+import com.sksamuel.scrimage.nio.PngReader
+import com.sksamuel.scrimage.nio.PngWriter
+import io.ktor.client.*
+import io.ktor.client.engine.apache.*
+import io.ktor.client.request.*
+import it.skrape.core.htmlDocument
+import it.skrape.extract
+import it.skrape.skrape
+import kotlinx.coroutines.flow.asFlow
+import kotlinx.coroutines.runBlocking
+import java.io.File
+import kotlinx.coroutines.flow.*
+
+data class Item(
+        val id: String,
+        val image: String
+)
+
+val items = skrape {
+    url = "https://www.deadmap.com/idlist"
+
+    extract {
+        htmlDocument {
+            findFirst("#idlist").findAll("tr") {
+                PngReader()
+
+                map {
+                    val img = it.findFirst("img")
+                            .attribute("src")
+                            .replace(" ", "%20")
+
+                    val id = it.findFirst("i").text
+
+                    Item(id, "https://www.deadmap.com/$img")
+                }
+            }
+        }
+    }
+}
+
+println(items.joinToString("\n"))
+
+runBlocking {
+    val client = HttpClient(Apache)
+
+    val iconsFolder = File("../src/main/resources/assets/items-13").canonicalFile
+    iconsFolder.mkdirs()
+
+    items.withIndex()
+            .asFlow()
+            .onEach { (index, item) ->
+                val (id, imageUrl) = item
+                println("Downloading item: $id ($index/${items.size - 1})")
+                val name = id.removePrefix("minecraft:")
+
+                val imageBytes = client.get<ByteArray>(imageUrl)
+
+                val image = ImmutableImage.loader()
+                        .fromBytes(imageBytes)
+                        .run {
+                            val tags = metadata.tags()
+                            val width = tags.first { it.name.contains("Width") }.rawValue.toInt()
+                            val height = tags.first { it.name.contains("Height") }.rawValue.toInt()
+
+                            if(width > 32 || height > 32)
+                                scaleTo(32, 32)
+                            else this
+                        }
+
+                image.output(PngWriter.NoCompression, File(iconsFolder, "$name.png"))
+                println("Complete download and resize: $id ($index/${items.size - 1})")
+            }
+            .collect()
+}