feat: Add support for generating RPC methods

Add networking demo.

Author: fuzzybinary

example/2d_tutorial/project.godot

@@ -12,7 +12,7 @@ config_version=5
 
 config/name="simple"
 run/main_scene="res://main.tscn"
-config/features=PackedStringArray("4.3", "Forward Plus")
+config/features=PackedStringArray("4.4", "Forward Plus")
 config/icon="res://icon.svg"
 
 [display]
@@ -25,21 +25,21 @@ window/stretch/mode="canvas_items"
 
 move_right={
 "deadzone": 0.5,
-"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194321,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-3,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194321,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
 ]
 }
 move_left={
 "deadzone": 0.5,
-"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194319,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-3,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194319,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
 ]
 }
 move_up={
 "deadzone": 0.5,
-"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194320,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-3,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194320,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
 ]
 }
 move_down={
 "deadzone": 0.5,
-"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194322,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-3,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194322,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
 ]
 }

example/2d_tutorial/src/lib/player.dart

@@ -71,6 +71,7 @@ class Player extends Area2D {
     setPosition(position);
   }
 
+  @GodotRpc()
   void start(Vector2 pos) {
     setPosition(pos);
     show();

example/2d_tutorial/src/pubspec.lock

@@ -199,14 +199,14 @@ packages:
       path: "../../../src/dart/godot_dart"
       relative: true
     source: path
-    version: "0.3.0"
+    version: "0.6.2"
   godot_dart_build:
     dependency: "direct dev"
     description:
       path: "../../../src/dart/godot_dart_build"
       relative: true
     source: path
-    version: "0.2.0"
+    version: "0.4.0"
   graphs:
     dependency: transitive
     description:
@@ -480,4 +480,4 @@ packages:
     source: hosted
     version: "3.1.2"
 sdks:
-  dart: ">=3.5.0-259.0.dev <4.0.0"
+  dart: ">=3.5.0 <4.0.0"

example/networking-demo/.editorconfig

@@ -0,0 +1,4 @@
+root = true
+
+[*]
+charset = utf-8

example/networking-demo/.gitattributes

@@ -0,0 +1,2 @@
+# Normalize EOL for all files that Git considers text files.
+* text=auto eol=lf

example/networking-demo/.gitignore

@@ -0,0 +1,10 @@
+# Godot 4+ specific ignores
+.godot/
+/android/
+
+# Ignore built libraries
+*.dll
+*.lib
+*.dylib
+*.pdb
+*.exp

example/networking-demo/godot_dart.gdextension

@@ -0,0 +1,15 @@
+[configuration]
+
+entry_symbol = "godot_dart_init"
+compatibility_minimum = 4.2
+
+[icons]
+
+DartScript = "res://logo_dart.svg"
+
+[libraries]
+
+windows.x86_64 =   "godot_dart.dll"
+linux.x86_64 = "libgodot_dart.so"
+macos.arm64 = "libgodot_dart.dylib"
+

example/networking-demo/icon.svg

@@ -0,0 +1,37 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://b0g1bchdfioi2"
+path="res://.godot/imported/icon.svg-218a8f2b3041327d8a5756f3a245f83b.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://icon.svg"
+dest_files=["res://.godot/imported/icon.svg-218a8f2b3041327d8a5756f3a245f83b.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
+svg/scale=1.0
+editor/scale_with_editor_scale=false
+editor/convert_colors_with_editor_theme=false

example/networking-demo/icon.svg.import

@@ -0,0 +1,37 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://bvvbwm6rscs1r"
+path="res://.godot/imported/logo_dart.svg-7d78e4990ae1b9cb0a988a5863e5eb62.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://logo_dart.svg"
+dest_files=["res://.godot/imported/logo_dart.svg-7d78e4990ae1b9cb0a988a5863e5eb62.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
+svg/scale=1.0
+editor/scale_with_editor_scale=false
+editor/convert_colors_with_editor_theme=false

example/networking-demo/logo_dart.svg

@@ -0,0 +1,16 @@
+; Engine configuration file.
+; It's best edited using the editor UI and not directly,
+; since the parameters that go here are not all obvious.
+;
+; Format:
+;   [section] ; section goes between []
+;   param=value ; assign values to parameters
+
+config_version=5
+
+[application]
+
+config/name="Networking Demo"
+run/main_scene="res://world.tscn"
+config/features=PackedStringArray("4.4", "Forward Plus")
+config/icon="res://icon.svg"

example/networking-demo/logo_dart.svg.import

@@ -0,0 +1,9 @@
+# Files and directories created by pub.
+.dart_tool/
+.packages
+
+# Conventional directory for build output.
+build/
+
+# Don't check in generated files
+*.g.dart

example/networking-demo/project.godot

@@ -0,0 +1,16 @@
+include: package:lints/recommended.yaml
+
+# Uncomment the following section to specify additional rules.
+
+analyzer:
+  exclude:
+    - lib/src/gdextension_bindings.dart
+  language:
+    strict-casts: true
+    strict-raw-types: true
+
+linter:
+  rules:
+    prefer_single_quotes: true
+    prefer_relative_imports: true
+    unawaited_futures: true

example/networking-demo/src/.gitignore

@@ -0,0 +1,68 @@
+import 'package:godot_dart/godot_dart.dart';
+
+part 'world.g.dart';
+
+@GodotScript()
+class World extends Node2D {
+  static TypeInfo get sTypeInfo => _$WorldTypeInfo();
+  @override
+  TypeInfo get typeInfo => sTypeInfo;
+
+  World() : super();
+
+  World.withNonNullOwner(super.owner) : super.withNonNullOwner();
+
+  static const port = 12912;
+
+  final enetPeer = ENetMultiplayerPeer();
+  late TextEdit _messages;
+  late LineEdit _userNameBox;
+  late LineEdit _line;
+
+  String username = 'Unknown';
+
+  @override
+  void vReady() {
+    _line = getNodeT<LineEdit>('Line')!;
+    _messages = getNodeT<TextEdit>('Messages')!;
+    _userNameBox = getNodeT<LineEdit>('Username')!;
+  }
+
+  @GodotExport()
+  void onHostPressed() {
+    enetPeer.createServer(port);
+
+    getMultiplayer()!.setMultiplayerPeer(enetPeer);
+    _joined();
+  }
+
+  @GodotExport()
+  void onJoinPressed() {
+    enetPeer.createClient('127.0.0.1', port);
+    getMultiplayer()!.setMultiplayerPeer(enetPeer);
+    _joined();
+  }
+
+  @GodotRpc(mode: MultiplayerAPIRPCMode.rpcModeAnyPeer, callLocal: true)
+  void messageRpc(String username, String data) {
+    final newText = _messages.getText() + '$username: $data\n';
+    _messages.setText(newText);
+  }
+
+  @GodotExport()
+  void onSendPressed() {
+    final line = _line.getText();
+    _line.setText('');
+    $rpc.messageRpc(username, line);
+  }
+
+  void _joined() {
+    username = _userNameBox.getText();
+    if (username.isEmpty) {
+      username = 'Unknown';
+    }
+    getNodeT<Button>('Host')?.hide();
+    getNodeT<Button>('Join')?.hide();
+    getNodeT<Control>('Username')?.hide();
+  }
+}

example/networking-demo/src/analysis_options.yaml

@@ -0,0 +1,5 @@
+import 'godot_dart_scripts.g.dart';
+
+void main() {
+  attachScriptResolver();
+}