Add indigo support to custom block textures

22 files changed, 689 insertions, 46 deletions

diff --git a/REUSE.toml b/REUSE.toml
index 19a1083..1cafccf 100644
--- a/REUSE.toml
+++ b/REUSE.toml
@@ -31,3 +31,8 @@ SPDX-FileCopyrightText = ["Linnea Gräf <nea@nea.moe>", "Firmament Contributors"
 path = "**/*.gradle.kts"
 SPDX-License-Identifier = "CC0-1.0"
 SPDX-FileCopyrightText = ["Linnea Gräf <nea@nea.moe>", "Firmament Contributors"]
+
+[[annotations]]
+path = ["**/META-INF/services/*"]
+SPDX-License-Identifier = "CC0-1.0"
+SPDX-FileCopyrightText = ["Linnea Gräf <nea@nea.moe>", "Firmament Contributors"]
diff --git a/build.gradle.kts b/build.gradle.kts
index 24b263e..12b8bc6 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -7,6 +7,7 @@
  */
 
 import moe.nea.licenseextractificator.LicenseDiscoveryTask
+import net.fabricmc.loom.LoomGradleExtension
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins {
@@ -38,46 +39,49 @@ compileTestKotlin.kotlinOptions {
     jvmTarget = "21"
 }
 
-repositories {
-    maven("https://maven.terraformersmc.com/releases/")
-    maven("https://maven.shedaniel.me")
-    maven("https://pkgs.dev.azure.com/djtheredstoner/DevAuth/_packaging/public/maven/v1")
-    maven("https://api.modrinth.com/maven") {
-        content {
-            includeGroup("maven.modrinth")
-        }
-    }
-    maven("https://repo.sleeping.town") {
-        content {
-            includeGroup("com.unascribed")
-        }
-    }
-    ivy("https://github.com/HotswapProjects/HotswapAgent/releases/download") {
-        patternLayout {
-            artifact("[revision]/[artifact]-[revision].[ext]")
+allprojects {
+    repositories {
+        mavenCentral()
+        maven("https://maven.terraformersmc.com/releases/")
+        maven("https://maven.shedaniel.me")
+        maven("https://maven.fabricmc.net")
+        maven("https://pkgs.dev.azure.com/djtheredstoner/DevAuth/_packaging/public/maven/v1")
+        maven("https://api.modrinth.com/maven") {
+            content {
+                includeGroup("maven.modrinth")
+            }
         }
-        content {
-            includeGroup("virtual.github.hotswapagent")
+        maven("https://repo.sleeping.town") {
+            content {
+                includeGroup("com.unascribed")
+            }
         }
-        metadataSources {
-            artifact()
+        ivy("https://github.com/HotswapProjects/HotswapAgent/releases/download") {
+            patternLayout {
+                artifact("[revision]/[artifact]-[revision].[ext]")
+            }
+            content {
+                includeGroup("virtual.github.hotswapagent")
+            }
+            metadataSources {
+                artifact()
+            }
         }
-    }
-    maven("https://server.bbkr.space/artifactory/libs-release")
-    maven("https://repo.nea.moe/releases")
-    maven("https://maven.notenoughupdates.org/releases")
-    maven("https://repo.nea.moe/mirror")
-    maven("https://jitpack.io/") {
-        content {
-            includeGroupByRegex("(com|io)\\.github\\..+")
-            excludeModule("io.github.cottonmc", "LibGui")
+        maven("https://server.bbkr.space/artifactory/libs-release")
+        maven("https://repo.nea.moe/releases")
+        maven("https://maven.notenoughupdates.org/releases")
+        maven("https://repo.nea.moe/mirror")
+        maven("https://jitpack.io/") {
+            content {
+                includeGroupByRegex("(com|io)\\.github\\..+")
+                excludeModule("io.github.cottonmc", "LibGui")
+            }
         }
+        maven("https://repo.hypixel.net/repository/Hypixel/")
+        maven("https://maven.azureaaron.net/snapshots")
+        mavenLocal()
     }
-    maven( "https://repo.hypixel.net/repository/Hypixel/")
-    maven("https://maven.azureaaron.net/snapshots")
-    mavenLocal()
 }
-
 kotlin {
     sourceSets.all {
         languageSettings {
@@ -124,6 +128,8 @@ dependencies {
     modImplementation(libs.moulconfig)
     modImplementation(libs.manninghamMills)
     modCompileOnly(libs.explosiveenhancement)
+    compileOnly(project(":javaplugin"))
+    annotationProcessor(project(":javaplugin"))
     include(libs.manninghamMills)
     include(libs.moulconfig)
 
@@ -209,8 +215,21 @@ loom {
 }
 
 tasks.withType<JavaCompile> {
+    this.sourceCompatibility = "21"
+    this.targetCompatibility = "21"
     options.encoding = "UTF-8"
-    options.release.set(21)
+    val module = "ALL-UNNAMED"
+    options.forkOptions.jvmArgs!!.addAll(listOf(
+        "--add-exports=jdk.compiler/com.sun.tools.javac.util=$module",
+        "--add-exports=jdk.compiler/com.sun.tools.javac.comp=$module",
+        "--add-exports=jdk.compiler/com.sun.tools.javac.tree=$module",
+        "--add-exports=jdk.compiler/com.sun.tools.javac.api=$module",
+        "--add-exports=jdk.compiler/com.sun.tools.javac.code=$module",
+    ))
+    options.isFork = true
+    afterEvaluate {
+        options.compilerArgs.add("-Xplugin:IntermediaryNameReplacement mappingFile=${LoomGradleExtension.get(project).mappingsFile.absolutePath} sourceNs=named")
+    }
 }
 
 tasks.jar {
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 80731a7..d4820e3 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -71,7 +71,7 @@ runtime_required = [
 runtime_optional = [
     "devauth",
     "freecammod",
-    "sodium",
+#    "sodium",
     #    "qolify",
     #    "citresewn",
     #    "ncr",
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 4c78103..0d93904 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -4,6 +4,6 @@
 
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.8-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.9-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/javaplugin/build.gradle.kts b/javaplugin/build.gradle.kts
new file mode 100644
index 0000000..9707639
--- /dev/null
+++ b/javaplugin/build.gradle.kts
@@ -0,0 +1,16 @@
+plugins {
+    java
+}
+dependencies {
+    implementation("net.fabricmc:stitch:0.6.2")
+}
+tasks.withType(JavaCompile::class) {
+    val module = "ALL-UNNAMED"
+    options.compilerArgs.addAll(listOf(
+        "--add-exports=jdk.compiler/com.sun.tools.javac.util=$module",
+        "--add-exports=jdk.compiler/com.sun.tools.javac.comp=$module",
+        "--add-exports=jdk.compiler/com.sun.tools.javac.tree=$module",
+        "--add-exports=jdk.compiler/com.sun.tools.javac.api=$module",
+        "--add-exports=jdk.compiler/com.sun.tools.javac.code=$module",
+    ))
+}
diff --git a/javaplugin/src/main/java/moe/nea/firmament/javaplugin/InitReplacer.java b/javaplugin/src/main/java/moe/nea/firmament/javaplugin/InitReplacer.java
new file mode 100644
index 0000000..a0d28ab
--- /dev/null
+++ b/javaplugin/src/main/java/moe/nea/firmament/javaplugin/InitReplacer.java
@@ -0,0 +1,73 @@
+package moe.nea.firmament.javaplugin;
+
+import com.sun.source.tree.ClassTree;
+import com.sun.source.tree.CompilationUnitTree;
+import com.sun.source.tree.VariableTree;
+import com.sun.source.util.TreeScanner;
+import com.sun.tools.javac.code.Symbol;
+import com.sun.tools.javac.tree.JCTree;
+import com.sun.tools.javac.tree.TreeMaker;
+import com.sun.tools.javac.util.List;
+import com.sun.tools.javac.util.Names;
+
+public class InitReplacer extends TreeScanner<Void, Void> {
+    private final MappingTree mappingTree;
+    private final TreeMaker treeMaker;
+    private final Names names;
+    private final IntermediaryNameResolutionTask plugin;
+    private Symbol.ClassSymbol classTree;
+    private CompilationUnitTree compilationUnitTree;
+
+    public InitReplacer(MappingTree mappingTree, IntermediaryNameResolutionTask plugin) {
+        this.mappingTree = mappingTree;
+        this.treeMaker = plugin.treeMaker;
+        this.names = plugin.names;
+        this.plugin = plugin;
+    }
+
+    @Override
+    public Void visitClass(ClassTree node, Void unused) {
+        this.classTree = plugin.utils.getSymbol(node);
+        return super.visitClass(node, unused);
+    }
+
+    @Override
+    public Void visitCompilationUnit(CompilationUnitTree node, Void unused) {
+        this.compilationUnitTree = node;
+        return super.visitCompilationUnit(node, unused);
+    }
+
+    @Override
+    public Void visitVariable(VariableTree node, Void unused) {
+        var annotation = node
+            .getModifiers().getAnnotations()
+            .stream()
+            .filter(it -> it.getAnnotationType().toString().equals("IntermediaryName")) // Crazy type-safety!
+            .findAny();
+        if (annotation.isEmpty())
+            return super.visitVariable(node, unused);
+        var jcAnnotation = (JCTree.JCAnnotation) annotation.get();
+        var jcNode = (JCTree.JCVariableDecl) node;
+        if (node.getInitializer() != null) {
+            plugin.utils.reportError(
+                compilationUnitTree.getSourceFile(),
+                jcNode.getInitializer(),
+                "Providing an initializer for a variable is illegal for @IntermediaryName annotated fields"
+            );
+            return super.visitVariable(node, unused);
+        }
+        var target = plugin.utils.getAnnotationValue(jcAnnotation, "value");
+        var targetClass = plugin.utils.resolveClassLiteralExpression(target).tsym.flatName().toString();
+        var intermediaryClass = mappingTree.resolveClassToIntermediary(targetClass);
+        var remapper = treeMaker.Select(treeMaker.This(classTree.type), names.fromString("remapper"));
+        var remappingCall = treeMaker.Apply(
+            List.nil(),
+            treeMaker.Select(remapper, names.fromString("mapClassName")),
+            List.of(treeMaker.Literal("intermediary"),
+                    treeMaker.Literal(intermediaryClass)));
+        jcNode.init = remappingCall;
+        jcNode.mods.annotations = List.filter(jcNode.mods.annotations, jcAnnotation);
+        return super.visitVariable(node, unused);
+    }
+
+}
diff --git a/javaplugin/src/main/java/moe/nea/firmament/javaplugin/IntermediaryMethodReplacer.java b/javaplugin/src/main/java/moe/nea/firmament/javaplugin/IntermediaryMethodReplacer.java
new file mode 100644
index 0000000..d3040b7
--- /dev/null
+++ b/javaplugin/src/main/java/moe/nea/firmament/javaplugin/IntermediaryMethodReplacer.java
@@ -0,0 +1,72 @@
+package moe.nea.firmament.javaplugin;
+
+import com.sun.source.tree.CompilationUnitTree;
+import com.sun.source.tree.ExpressionTree;
+import com.sun.source.tree.MethodInvocationTree;
+import com.sun.source.util.TreeScanner;
+import com.sun.tools.javac.tree.JCTree;
+import com.sun.tools.javac.util.List;
+
+import javax.tools.JavaFileObject;
+
+public class IntermediaryMethodReplacer extends TreeScanner<Void, Void> {
+    private final MappingTree mappings;
+    private final IntermediaryNameResolutionTask plugin;
+    private JavaFileObject sourceFile;
+    private CompilationUnitTree compilationUnit;
+
+    public IntermediaryMethodReplacer(MappingTree mappings, IntermediaryNameResolutionTask plugin) {
+        this.mappings = mappings;
+        this.plugin = plugin;
+    }
+
+
+    @Override
+    public Void visitCompilationUnit(CompilationUnitTree node, Void unused) {
+        sourceFile = node.getSourceFile();
+        compilationUnit = node;
+        return super.visitCompilationUnit(node, unused);
+    }
+
+    public void replaceMethodName(JCTree.JCMethodInvocation node) {
+        var select = node.getMethodSelect();
+        if (!(select instanceof JCTree.JCFieldAccess fieldAccess)) return;
+        if (!fieldAccess.name.contentEquals("methodName")) return;
+        if (!(node.args.head instanceof JCTree.JCMemberReference methodReference)) {
+            plugin.utils.reportError(sourceFile, node, "Please provide a Class::method reference directly (and nothing else)");
+            return;
+        }
+        var clearName = methodReference.name.toString();
+        var classRef = methodReference.expr;
+        var type = plugin.utils.resolveClassName(classRef, compilationUnit);
+        var intermediaryName = mappings.resolveMethodToIntermediary(
+            type.tsym.flatName().toString(),
+            clearName
+        );
+        fieldAccess.name = plugin.names.fromString("id");
+        node.args = List.of(plugin.treeMaker.Literal(intermediaryName));
+    }
+
+    public void replaceClassName(JCTree.JCMethodInvocation node) {
+        var select = node.getMethodSelect();
+        if (!(select instanceof JCTree.JCFieldAccess fieldAccess)) return;
+        if (!fieldAccess.name.contentEquals("className")) return;
+        if (node.getTypeArguments().size() != 1) {
+            plugin.utils.reportError(sourceFile, node, "You need to explicitly provide the class you want the intermediary name for");
+            return;
+        }
+        var head = node.typeargs.head;
+        var resolved = plugin.utils.resolveClassName(head, compilationUnit);
+        var mappedName = mappings.resolveClassToIntermediary(resolved.tsym.flatName().toString());
+        fieldAccess.name = plugin.names.fromString("id");
+        node.typeargs = List.nil();
+        node.args = List.of(plugin.treeMaker.Literal(mappedName));
+    }
+
+    @Override
+    public Void visitMethodInvocation(MethodInvocationTree node, Void unused) {
+        replaceClassName((JCTree.JCMethodInvocation) node);
+        replaceMethodName((JCTree.JCMethodInvocation) node);
+        return super.visitMethodInvocation(node, unused);
+    }
+}
diff --git a/javaplugin/src/main/java/moe/nea/firmament/javaplugin/IntermediaryNameResolutionPlugin.java b/javaplugin/src/main/java/moe/nea/firmament/javaplugin/IntermediaryNameResolutionPlugin.java
new file mode 100644
index 0000000..ba6a0c5
--- /dev/null
+++ b/javaplugin/src/main/java/moe/nea/firmament/javaplugin/IntermediaryNameResolutionPlugin.java
@@ -0,0 +1,25 @@
+package moe.nea.firmament.javaplugin;
+
+import com.sun.source.util.JavacTask;
+import com.sun.source.util.Plugin;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class IntermediaryNameResolutionPlugin implements Plugin {
+
+    @Override
+    public String getName() {
+        return "IntermediaryNameReplacement";
+    }
+
+    @Override
+    public void init(JavacTask task, String... args) {
+        Map<String, String> argMap = new HashMap<>();
+        for (String arg : args) {
+            String[] parts = arg.split("=", 2);
+            argMap.put(parts[0], parts.length == 2 ? parts[1] : "true");
+        }
+        task.addTaskListener(new IntermediaryNameResolutionTask(this, task, argMap));
+    }
+}
diff --git a/javaplugin/src/main/java/moe/nea/firmament/javaplugin/IntermediaryNameResolutionTask.java b/javaplugin/src/main/java/moe/nea/firmament/javaplugin/IntermediaryNameResolutionTask.java
new file mode 100644
index 0000000..86a5598
--- /dev/null
+++ b/javaplugin/src/main/java/moe/nea/firmament/javaplugin/IntermediaryNameResolutionTask.java
@@ -0,0 +1,44 @@
+package moe.nea.firmament.javaplugin;
+
+import com.sun.source.util.JavacTask;
+import com.sun.source.util.TaskEvent;
+import com.sun.source.util.TaskListener;
+import com.sun.tools.javac.api.BasicJavacTask;
+import com.sun.tools.javac.tree.TreeMaker;
+import com.sun.tools.javac.util.Names;
+import net.fabricmc.stitch.commands.tinyv2.TinyV2Reader;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.Map;
+
+public class IntermediaryNameResolutionTask implements TaskListener {
+    TreeMaker treeMaker;
+    Names names;
+    MappingTree mappings;
+    Utils utils;
+
+    public IntermediaryNameResolutionTask(IntermediaryNameResolutionPlugin intermediaryNameResolutionPlugin, JavacTask task, Map<String, String> argMap) {
+        var context = ((BasicJavacTask) task).getContext();
+        var mappingFile = new File(argMap.get("mappingFile"));
+        System.err.println("Loading mappings from " + mappingFile);
+        try {
+            var tinyV2File = TinyV2Reader.read(mappingFile.toPath());
+            mappings = new MappingTree(tinyV2File, argMap.get("sourceNs"), argMap.getOrDefault("targetNs", "intermediary"));
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        treeMaker = TreeMaker.instance(context);
+        names = Names.instance(context);
+        utils = Utils.instance(context);
+    }
+
+    @Override
+    public void finished(TaskEvent e) {
+        if (e.getKind() != TaskEvent.Kind.ENTER) return;
+        if (e.getCompilationUnit() == null || e.getSourceFile() == null) return;
+        e.getCompilationUnit().accept(new InitReplacer(mappings, this), null);
+        e.getCompilationUnit().accept(new IntermediaryMethodReplacer(mappings, this), null);
+    }
+
+}
diff --git a/javaplugin/src/main/java/moe/nea/firmament/javaplugin/MappingTree.java b/javaplugin/src/main/java/moe/nea/firmament/javaplugin/MappingTree.java
new file mode 100644
index 0000000..7a270b7
--- /dev/null
+++ b/javaplugin/src/main/java/moe/nea/firmament/javaplugin/MappingTree.java
@@ -0,0 +1,48 @@
+package moe.nea.firmament.javaplugin;
+
+import net.fabricmc.stitch.commands.tinyv2.TinyClass;
+import net.fabricmc.stitch.commands.tinyv2.TinyFile;
+import net.fabricmc.stitch.commands.tinyv2.TinyMethod;
+
+import java.util.Map;
+import java.util.stream.Collectors;
+
+public class MappingTree {
+
+    private final Map<String, TinyClass> classLookup;
+    private final int targetIndex;
+    private final int sourceIndex;
+
+    public MappingTree(TinyFile tinyV2File, String sourceNamespace, String targetNamespace) {
+        sourceIndex = tinyV2File.getHeader().getNamespaces().indexOf(sourceNamespace);
+        if (sourceIndex < 0)
+            throw new RuntimeException("Could not find source namespace " + sourceNamespace + " in mappings file.");
+        this.classLookup = tinyV2File
+            .getClassEntries()
+            .stream()
+            .collect(Collectors.toMap(it -> it.getClassNames().get(sourceIndex), it -> it));
+        targetIndex = tinyV2File.getHeader().getNamespaces().indexOf(targetNamespace);
+        if (targetIndex < 0)
+            throw new RuntimeException("Could not find target namespace " + targetNamespace + " in mappings file.");
+    }
+
+    public String resolveMethodToIntermediary(String className, String methodName) {
+        var classData = classLookup.get(className.replace(".", "/"));
+        TinyMethod candidate = null;
+        for (TinyMethod method : classData.getMethods()) {
+            if (method.getMethodNames().get(sourceIndex).equals(methodName)) {
+                if (candidate != null) {
+                    throw new RuntimeException("Found two candidates for method " + className + "." + methodName);
+                }
+                candidate = method;
+            }
+        }
+        return candidate.getMethodNames().get(targetIndex);
+    }
+
+    public String resolveClassToIntermediary(String className) {
+        return classLookup.get(className.replace(".", "/"))
+                          .getClassNames().get(targetIndex)
+                          .replace("/", ".");
+    }
+}
diff --git a/javaplugin/src/main/java/moe/nea/firmament/javaplugin/Utils.java b/javaplugin/src/main/java/moe/nea/firmament/javaplugin/Utils.java
new file mode 100644
index 0000000..d9008bd
--- /dev/null
+++ b/javaplugin/src/main/java/moe/nea/firmament/javaplugin/Utils.java
@@ -0,0 +1,121 @@
+package moe.nea.firmament.javaplugin;
+
+import com.sun.source.tree.AnnotationTree;
+import com.sun.source.tree.AssignmentTree;
+import com.sun.source.tree.ClassTree;
+import com.sun.source.tree.CompilationUnitTree;
+import com.sun.source.tree.ExpressionTree;
+import com.sun.source.tree.IdentifierTree;
+import com.sun.source.tree.MemberSelectTree;
+import com.sun.source.tree.Tree;
+import com.sun.tools.javac.comp.Attr;
+import com.sun.tools.javac.code.Symbol;
+import com.sun.tools.javac.code.Type;
+import com.sun.tools.javac.code.Types;
+import com.sun.tools.javac.comp.AttrContext;
+import com.sun.tools.javac.comp.Enter;
+import com.sun.tools.javac.comp.Env;
+import com.sun.tools.javac.tree.JCTree;
+import com.sun.tools.javac.util.Context;
+import com.sun.tools.javac.util.JCDiagnostic;
+import com.sun.tools.javac.util.JavacMessages;
+import com.sun.tools.javac.util.Log;
+
+import javax.tools.JavaFileObject;
+import java.util.ListResourceBundle;
+
+public class Utils {
+    private static final Context.Key<Utils> KEY = new Context.Key<>();
+    private final Log log;
+    private final JCDiagnostic.Factory diagnostics;
+    private final Types types;
+    private final Attr attr;
+    private final Enter enter;
+
+    private Utils(Context context) {
+        context.put(KEY, this);
+        JavacMessages.instance(context).add(l -> new ListResourceBundle() {
+
+            @Override
+            protected Object[][] getContents() {
+                return new Object[][]{
+                    new Object[]{"compiler.err.firmament.generic", "{0}"}
+                };
+            }
+        });
+        log = Log.instance(context);
+        diagnostics = JCDiagnostic.Factory.instance(context);
+        types = Types.instance(context);
+        attr = Attr.instance(context);
+        enter = Enter.instance(context);
+    }
+
+    public static Utils instance(Context context) {
+        var utils = context.get(KEY);
+        if (utils == null) {
+            utils = new Utils(context);
+        }
+        return utils;
+    }
+
+    public Type resolveClassName(ExpressionTree expression) {
+        var tree = (JCTree) expression;
+        return tree.type;
+    }
+
+    public Type resolveClassName(ExpressionTree tree, CompilationUnitTree unit) {
+        return resolveClassName(tree, enter.getTopLevelEnv((JCTree.JCCompilationUnit) unit));
+    }
+
+    public Type resolveClassName(ExpressionTree tree, Env<AttrContext> env) {
+        var t = resolveClassName(tree);
+        if (t != null) return t;
+        return attr.attribType((JCTree) tree, env);
+    }
+
+    public Symbol getSymbol(IdentifierTree tree) {
+        return ((JCTree.JCIdent) tree).sym;
+    }
+
+    public Symbol.ClassSymbol getSymbol(ClassTree tree) {
+        return ((JCTree.JCClassDecl) tree).sym;
+    }
+
+    public ExpressionTree getAnnotationValue(
+        AnnotationTree tree,
+        String name) {
+        // TODO: strip parenthesis
+        for (var argument : tree.getArguments()) {
+            var assignment = (AssignmentTree) argument;
+            if (((IdentifierTree) assignment.getVariable()).getName().toString().equals(name))
+                return assignment.getExpression();
+        }
+        return null;
+    }
+
+    public Type.ClassType resolveClassLiteralExpression(ExpressionTree tree) {
+        if (!(tree instanceof MemberSelectTree select))
+            throw new RuntimeException("Cannot resolve non field access class literal: " + tree);
+        if (!select.getIdentifier().toString().equals("class"))
+            throw new RuntimeException("Class literal " + select + "accessed non .class attribute");
+
+        return (Type.ClassType) resolveClassName(select.getExpression());
+    }
+
+    public void reportError(
+        JavaFileObject file,
+        Tree node,
+        String message
+    ) {
+        var originalSource = log.useSource(file);
+        var error = diagnostics.error(
+            JCDiagnostic.DiagnosticFlag.API,
+            log.currentSource(),
+            ((JCTree) node).pos(),
+            "firmament.generic",
+            message
+        );
+        log.report(error);
+        log.useSource(originalSource);
+    }
+}
diff --git a/javaplugin/src/main/resources/META-INF/services/com.sun.source.util.Plugin b/javaplugin/src/main/resources/META-INF/services/com.sun.source.util.Plugin
new file mode 100644
index 0000000..a9e5dbe
--- /dev/null
+++ b/javaplugin/src/main/resources/META-INF/services/com.sun.source.util.Plugin
@@ -0,0 +1 @@
+moe.nea.firmament.javaplugin.IntermediaryNameResolutionPlugin
diff --git a/settings.gradle.kts b/settings.gradle.kts
index 79cf1a4..36e7e3e 100644
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -33,3 +33,4 @@ pluginManagement {
 rootProject.name = "Firmament"
 
 include("symbols")
+include("javaplugin")
diff --git a/src/main/java/moe/nea/firmament/init/ClientPlayerRiser.java b/src/main/java/moe/nea/firmament/init/ClientPlayerRiser.java
index 18dfa17..0a5bedd 100644
--- a/src/main/java/moe/nea/firmament/init/ClientPlayerRiser.java
+++ b/src/main/java/moe/nea/firmament/init/ClientPlayerRiser.java
@@ -1,4 +1,3 @@
-
 package moe.nea.firmament.init;
 
 import me.shedaniel.mm.api.ClassTinkerers;
@@ -14,11 +13,15 @@ import java.lang.reflect.Modifier;
 import java.util.Objects;
 
 public class ClientPlayerRiser extends RiserUtils {
-    String PlayerEntity = remapper.mapClassName("intermediary", "net.minecraft.class_1657");
-    String World = remapper.mapClassName("intermediary", "net.minecraft.class_1937");
+    @IntermediaryName(net.minecraft.entity.player.PlayerEntity.class)
+    String PlayerEntity;
+    @IntermediaryName(net.minecraft.world.World.class)
+    String World;
     String GameProfile = "com.mojang.authlib.GameProfile";
-    String BlockPos = remapper.mapClassName("intermediary", "net.minecraft.class_2338");
-    String AbstractClientPlayerEntity = remapper.mapClassName("intermediary", "net.minecraft.class_742");
+    @IntermediaryName(net.minecraft.util.math.BlockPos.class)
+    String BlockPos;
+    @IntermediaryName(net.minecraft.client.network.AbstractClientPlayerEntity.class)
+    String AbstractClientPlayerEntity;
     String GuiPlayer = "moe.nea.firmament.gui.entity.GuiPlayer";
     // World world, BlockPos pos, float yaw, GameProfile gameProfile
     Type constructorDescriptor = Type.getMethodType(Type.VOID_TYPE, getTypeForClassName(World), getTypeForClassName(BlockPos), Type.FLOAT_TYPE, getTypeForClassName(GameProfile));
diff --git a/src/main/java/moe/nea/firmament/init/EarlyRiser.java b/src/main/java/moe/nea/firmament/init/EarlyRiser.java
index 77c044d..5eab563 100644
--- a/src/main/java/moe/nea/firmament/init/EarlyRiser.java
+++ b/src/main/java/moe/nea/firmament/init/EarlyRiser.java
@@ -6,5 +6,6 @@ public class EarlyRiser implements Runnable {
     public void run() {
         new ClientPlayerRiser().addTinkerers();
         new HandledScreenRiser().addTinkerers();
+        new SectionBuilderRiser().addTinkerers();
     }
 }
diff --git a/src/main/java/moe/nea/firmament/init/HandledScreenRiser.java b/src/main/java/moe/nea/firmament/init/HandledScreenRiser.java
index 0215523..baa0501 100644
--- a/src/main/java/moe/nea/firmament/init/HandledScreenRiser.java
+++ b/src/main/java/moe/nea/firmament/init/HandledScreenRiser.java
@@ -2,6 +2,8 @@
 package moe.nea.firmament.init;
 
 import me.shedaniel.mm.api.ClassTinkerers;
+import net.minecraft.client.gui.screen.Screen;
+import net.minecraft.client.gui.screen.ingame.HandledScreen;
 import org.objectweb.asm.Opcodes;
 import org.objectweb.asm.Type;
 import org.objectweb.asm.tree.ClassNode;
@@ -17,8 +19,10 @@ import org.objectweb.asm.tree.VarInsnNode;
 import java.lang.reflect.Modifier;
 
 public class HandledScreenRiser extends RiserUtils {
-    String Screen = remapper.mapClassName("intermediary", "net.minecraft.class_437");
-    String HandledScreen = remapper.mapClassName("intermediary", "net.minecraft.class_465");
+    @IntermediaryName(net.minecraft.client.gui.screen.Screen.class)
+    String Screen;
+    @IntermediaryName(net.minecraft.client.gui.screen.ingame.HandledScreen.class)
+    String HandledScreen;
     Type mouseScrolledDesc = Type.getMethodType(Type.BOOLEAN_TYPE, Type.DOUBLE_TYPE, Type.DOUBLE_TYPE, Type.DOUBLE_TYPE, Type.DOUBLE_TYPE);
     String mouseScrolled = remapper.mapMethodName("intermediary", "net.minecraft.class_364", "method_25401",
                                                   mouseScrolledDesc.getDescriptor());
diff --git a/src/main/java/moe/nea/firmament/init/Intermediary.java b/src/main/java/moe/nea/firmament/init/Intermediary.java
new file mode 100644
index 0000000..61494d7
--- /dev/null
+++ b/src/main/java/moe/nea/firmament/init/Intermediary.java
@@ -0,0 +1,63 @@
+package moe.nea.firmament.init;
+
+import net.fabricmc.loader.api.FabricLoader;
+import net.fabricmc.loader.api.MappingResolver;
+import org.objectweb.asm.Type;
+
+import java.util.List;
+
+public class Intermediary {
+    private static final MappingResolver RESOLVER = FabricLoader.getInstance().getMappingResolver();
+
+    static String methodName(Object object) {
+        throw new AssertionError("Cannot be called at runtime");
+    }
+
+    static <T> String className() {
+        throw new AssertionError("Cannot be called at runtime");
+    }
+
+    static String id(String source) {
+        return source;
+    }
+
+//    public record Class(
+//        Type intermediaryClass
+//    ) {
+//        public Class(String intermediaryClass) {
+//            this(Type.getObjectType(intermediaryClass.replace('.', '/')));
+//        }
+//
+//        public String getMappedName() {
+//            return RESOLVER.mapClassName("intermediary", intermediaryClass.getInternalName()
+//                                                                          .replace('/', '.'));
+//        }
+//    }
+//
+//    public record Method(
+//        Type intermediaryClassName,
+//        String intermediaryMethodName,
+//        Type intermediaryReturnType,
+//        List<Type> intermediaryArgumentTypes
+//    ) {
+//        public Method(
+//            String intermediaryClassName,
+//            String intermediaryMethodName,
+//            String intermediaryReturnType,
+//            String... intermediaryArgumentTypes
+//        ) {
+//            this(intermediaryClassName, intermediaryMethodName, intermediaryReturnType, List.of(intermediaryArgumentTypes));
+//        }
+//
+//        public String getMappedMethodName() {
+//            return RESOLVER.mapMethodName("intermediary",
+//                                          intermediaryClassName.getInternalName().replace('/', '.'));
+//        }
+//
+//        public Type getIntermediaryDescriptor() {
+//            return Type.getMethodType(intermediaryReturnType, intermediaryArgumentTypes.toArray(Type[]::new));
+//        }
+//
+//
+//    }
+}
diff --git a/src/main/java/moe/nea/firmament/init/IntermediaryName.java b/src/main/java/moe/nea/firmament/init/IntermediaryName.java
new file mode 100644
index 0000000..a22ad0f
--- /dev/null
+++ b/src/main/java/moe/nea/firmament/init/IntermediaryName.java
@@ -0,0 +1,21 @@
+package moe.nea.firmament.init;
+
+import net.fabricmc.loader.api.MappingResolver;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Injects the intermediary name of the given field into this field by replacing its initializer with a call to
+ * {@link MappingResolver#mapClassName(String, String)}
+ */
+@Retention(RetentionPolicy.SOURCE)
+@Target(ElementType.FIELD)
+public @interface IntermediaryName {
+    //    String method() default "";
+//
+//    String field() default "";
+    Class<?> value();
+}
diff --git a/src/main/java/moe/nea/firmament/init/SectionBuilderRiser.java b/src/main/java/moe/nea/firmament/init/SectionBuilderRiser.java
new file mode 100644
index 0000000..2be11a6
--- /dev/null
+++ b/src/main/java/moe/nea/firmament/init/SectionBuilderRiser.java
@@ -0,0 +1,116 @@
+package moe.nea.firmament.init;
+
+import me.shedaniel.mm.api.ClassTinkerers;
+import net.fabricmc.loader.api.FabricLoader;
+import net.minecraft.block.BlockState;
+import net.minecraft.client.render.block.BlockModels;
+import net.minecraft.client.render.block.BlockRenderManager;
+import net.minecraft.client.render.chunk.SectionBuilder;
+import net.minecraft.client.render.model.BakedModel;
+import net.minecraft.util.math.BlockPos;
+import org.objectweb.asm.Opcodes;
+import org.objectweb.asm.Type;
+import org.objectweb.asm.tree.AbstractInsnNode;
+import org.objectweb.asm.tree.ClassNode;
+import org.objectweb.asm.tree.InsnList;
+import org.objectweb.asm.tree.LocalVariableNode;
+import org.objectweb.asm.tree.MethodInsnNode;
+import org.objectweb.asm.tree.MethodNode;
+import org.objectweb.asm.tree.VarInsnNode;
+
+public class SectionBuilderRiser extends RiserUtils {
+
+    @IntermediaryName(SectionBuilder.class)
+    String SectionBuilder;
+    @IntermediaryName(BlockPos.class)
+    String BlockPos;
+    @IntermediaryName(BlockRenderManager.class)
+    String BlockRenderManager;
+    @IntermediaryName(BlockState.class)
+    String BlockState;
+    @IntermediaryName(BakedModel.class)
+    String BakedModel;
+    String CustomBlockTextures = "moe.nea.firmament.features.texturepack.CustomBlockTextures";
+
+    Type getModelDesc = Type.getMethodType(
+        getTypeForClassName(BlockRenderManager),
+        getTypeForClassName(BlockState)
+    );
+    String getModel = remapper.mapMethodName(
+        "intermediary",
+        Intermediary.<BlockRenderManager>className(),
+        Intermediary.methodName(net.minecraft.client.render.block.BlockRenderManager::getModel),
+        Type.getMethodDescriptor(
+            getTypeForClassName(Intermediary.<BakedModel>className()),
+            getTypeForClassName(Intermediary.<BlockState>className())
+        )
+    );
+
+    @Override
+    public void addTinkerers() {
+        if (FabricLoader.getInstance().isModLoaded("fabric-renderer-indigo"))
+            ClassTinkerers.addTransformation(SectionBuilder, this::handle, true);
+    }
+
+    private void handle(ClassNode classNode) {
+        for (MethodNode method : classNode.methods) {
+            if (method.name.endsWith("$fabric-renderer-indigo$hookChunkBuildTessellate") &&
+                method.name.startsWith("redirect$")) {
+                handleIndigo(method);
+                return;
+            }
+        }
+        new RuntimeException("Could not inject tesselation hook despite fabric renderer indigo being loaded").printStackTrace();
+    }
+
+    private void handleIndigo(MethodNode method) {
+        LocalVariableNode blockPosVar = null, blockStateVar = null;
+        for (LocalVariableNode localVariable : method.localVariables) {
+            if (Type.getType(localVariable.desc).equals(getTypeForClassName(BlockPos))) {
+                blockPosVar = localVariable;
+            }
+            if (Type.getType(localVariable.desc).equals(getTypeForClassName(BlockState))) {
+                blockStateVar = localVariable;
+            }
+        }
+        if (blockPosVar == null || blockStateVar == null) {
+            System.err.println("Firmament could inject into indigo: missing either block pos or blockstate");
+            return;
+        }
+        for (AbstractInsnNode instruction : method.instructions) {
+            if (instruction.getOpcode() != Opcodes.INVOKEVIRTUAL) continue;
+            var methodInsn = (MethodInsnNode) instruction;
+            if (!(methodInsn.name.equals(getModel) && Type.getObjectType(methodInsn.owner).equals(getTypeForClassName(BlockRenderManager))))
+                continue;
+            method.instructions.insertBefore(
+                methodInsn,
+                new MethodInsnNode(
+                    Opcodes.INVOKESTATIC,
+                    getTypeForClassName(CustomBlockTextures).getInternalName(),
+                    "enterFallbackCall",
+                    Type.getMethodDescriptor(Type.VOID_TYPE)
+                ));
+
+            var insnList = new InsnList();
+            insnList.add(new MethodInsnNode(
+                Opcodes.INVOKESTATIC,
+                getTypeForClassName(CustomBlockTextures).getInternalName(),
+                "exitFallbackCall",
+                Type.getMethodDescriptor(Type.VOID_TYPE)
+            ));
+            insnList.add(new VarInsnNode(Opcodes.ALOAD, blockPosVar.index));
+            insnList.add(new VarInsnNode(Opcodes.ALOAD, blockStateVar.index));
+            insnList.add(new MethodInsnNode(
+                Opcodes.INVOKESTATIC,
+                getTypeForClassName(CustomBlockTextures).getInternalName(),
+                "patchIndigo",
+                Type.getMethodDescriptor(getTypeForClassName(BakedModel),
+                                         getTypeForClassName(BakedModel),
+                                         getTypeForClassName(BlockPos),
+                                         getTypeForClassName(BlockState)),
+                false
+            ));
+            method.instructions.insert(methodInsn, insnList);
+        }
+    }
+}
diff --git a/src/main/kotlin/moe/nea/firmament/Firmament.kt b/src/main/kotlin/moe/nea/firmament/Firmament.kt
index 4b742e8..400dcf2 100644
--- a/src/main/kotlin/moe/nea/firmament/Firmament.kt
+++ b/src/main/kotlin/moe/nea/firmament/Firmament.kt
@@ -33,6 +33,7 @@ import kotlinx.coroutines.plus
 import kotlinx.serialization.json.Json
 import kotlinx.serialization.json.decodeFromStream
 import kotlin.coroutines.EmptyCoroutineContext
+import net.minecraft.client.render.chunk.SectionBuilder
 import net.minecraft.command.CommandRegistryAccess
 import net.minecraft.util.Identifier
 import moe.nea.firmament.commands.registerFirmamentCommand
@@ -112,6 +113,8 @@ object Firmament {
         ClientTickEvents.END_CLIENT_TICK.register(ClientTickEvents.EndTick { instance ->
             TickEvent.publish(TickEvent(tick++))
         })
+        // TODO: remove me
+        Class.forName(SectionBuilder::class.java.name)
         IDataHolder.registerEvents()
         RepoManager.initialize()
         SBData.init()
diff --git a/src/main/kotlin/moe/nea/firmament/features/texturepack/CustomBlockTextures.kt b/src/main/kotlin/moe/nea/firmament/features/texturepack/CustomBlockTextures.kt
index 2289be2..c869ba4 100644
--- a/src/main/kotlin/moe/nea/firmament/features/texturepack/CustomBlockTextures.kt
+++ b/src/main/kotlin/moe/nea/firmament/features/texturepack/CustomBlockTextures.kt
@@ -157,7 +157,10 @@ object CustomBlockTextures {
         currentIslandReplacements = replacements
         if (lastReplacements != replacements) {
             MC.nextTick {
-                MC.worldRenderer.reload()
+                MC.worldRenderer.chunks?.chunks?.forEach {
+                    // false schedules rebuilds outside a 27 block radius to happen async
+                    it.scheduleRebuild(false)
+                }
             }
         }
     }
@@ -259,6 +262,10 @@ object CustomBlockTextures {
         return BakedReplacements(map.mapValues { LocationReplacements(it.value) })
     }
 
+    @JvmStatic
+    fun patchIndigo(orig: BakedModel, pos: BlockPos, state: BlockState): BakedModel {
+        return getReplacementModel(state, pos) ?: orig
+    }
 
     @Subscribe
     fun onStart(event: FinalizeResourceManagerEvent) {
diff --git a/src/main/resources/firmament.accesswidener b/src/main/resources/firmament.accesswidener
index b69b99d..c69725f 100644
--- a/src/main/resources/firmament.accesswidener
+++ b/src/main/resources/firmament.accesswidener
@@ -20,4 +20,4 @@ mutable field net/minecraft/screen/slot/Slot x I
 mutable field net/minecraft/screen/slot/Slot y I
 
 accessible field net/minecraft/entity/player/PlayerEntity PLAYER_MODEL_PARTS Lnet/minecraft/entity/data/TrackedData;
-
+accessible field net/minecraft/client/render/WorldRenderer chunks Lnet/minecraft/client/render/BuiltChunkStorage;