Return subcommands + Project supported formats

lib/src/build/build.dart

@@ -91,7 +91,12 @@ Map<String, String> _getFiles(BuildProject prj, GenOptions options) {
   // create mcmeta
   if (!options.minified && prj.isGenMeta) {
     Map mcmeta = <String, dynamic>{
-      'pack': {'pack_format': prj.pack_format, 'description': prj.description}
+      'pack': {
+        'pack_format': prj.pack_format,
+        'description': prj.description,
+        if (prj.supportedFormats != null)
+          'supported_formats': prj.supportedFormats,
+      }
     };
     files['pack.mcmeta'] = json.encode(mcmeta);
   }

lib/src/build/build_project.dart

@@ -9,6 +9,7 @@ class BuildProject {
   String name;
   String description;
   int pack_format;
+  List<int>? supportedFormats;
   bool prod;
   bool isGen = true;
   bool isGenMeta = true;
@@ -22,6 +23,7 @@ class BuildProject {
         name = prj.name,
         description = prj.description,
         pack_format = prj.getPackFormat(),
+        supportedFormats = prj.supportedFormats,
         context = Context(prod: false, version: prj.version) {
     packs = findPacks(prj.generate, context: context)
         .map(

lib/src/build/project.dart

@@ -7,6 +7,7 @@ class Project {
   final String description;
   final double version;
   final int? packFormat;
+  final List<int>? supportedFormats;
   Widget generate;
 
   /// The project is a special Widget which is just defined once.
@@ -29,6 +30,7 @@ class Project {
     this.version = 20.4,
     this.target = './',
     this.packFormat,
+    this.supportedFormats,
     this.description = 'This is a datapack generated with objd by Stevertus',
   });
 

lib/src/wrappers/effect.dart

@@ -1,6 +1,6 @@
 import 'package:objd/core.dart';
 
-class Effect extends RestActionAble {
+class Effect extends RestActionAble implements GsonValue {
   EffectType? effect;
   Entity? entity;
 
@@ -40,15 +40,18 @@ class Effect extends RestActionAble {
 
   Map getMap() {
     var ret = {};
-    if (effect != null) ret['Id'] = EffectType.values.indexOf(effect!) + 1;
-    ret['Amplifier'] = Byte(amplifier != null ? amplifier! - 1 : 0);
-    ret['Duration'] = duration != null ? duration!.ticks : 0;
-    ret['ShowParticles'] = Byte(
+    if (effect != null) ret['id'] = EffectType.values.indexOf(effect!) + 1;
+    ret['amplifier'] = Byte(amplifier != null ? amplifier! - 1 : 0);
+    ret['duration'] = duration != null ? duration!.ticks : 0;
+    ret['show_particles'] = Byte(
       showParticles != null && showParticles! ? 1 : 0,
     );
     return ret;
   }
 
+  @override
+  String toSimple() => gson.encode(getMap());
+
   @override
   Widget generate(Context context) {
     if (_type == 'clear') {

lib/src/wrappers/return.dart

@@ -3,20 +3,38 @@ import 'package:objd/core.dart';
 /// Simple return command with integer return value
 class Return extends Widget {
   final int val;
+  final Widget? run;
 
   /// Simple return command with integer return value
   ///
   /// Can be used in conjunction with *File* and scores to calculate with the return value:
   /// ```dart
   ///  Score(Entity.Self(),'test') << File('filename', child: Return(5));
   /// ```
-  Return(this.val);
+  Return(this.val) : run = null;
+
+  /// Returns the result of a command
+  ///
+  /// The provided Widget should just return a single command!
+  Return.run(Widget this.run) : val = 0;
+
+  /// Returns a failing state(success & value = 0)
+  Return.fail()
+      : val = 0,
+        run = Comment.LineBreak();
 
   @override
   Widget generate(Context context) {
     if (context.version < 20) {
       throw "Return requires at least version 20";
     }
+    if (run != null) {
+      if (run case Comment(text: '')) return Command('return fail');
+      return Command(
+        'return run ${getCommands(run!.generate(context), context: context).first}',
+      );
+    }
+
     return Command('return $val');
   }
 }

test/simple_wrappers_test.dart

@@ -62,7 +62,15 @@ void main() {
     );
   });
 
-  command('Return', Return(30), "return 30");
+  group('Return', () {
+    command('integer', Return(30), "return 30");
+    command('fail', Return.fail(), "return fail");
+    command(
+      'run',
+      Return.run(Data.get(Entity.All(), path: 'path')),
+      "return run data get entity @a path",
+    );
+  });
 
   group('Damage', () {
     final e = Entity.All();