Updated Dodge the Creeps C# to Godot mono 4.2 (#1000)

Co-authored-by: Ivan Shakhov <[email protected]>
Co-authored-by: Aaron Franke <[email protected]>

2d/dodge_the_creeps/Player.gd

@@ -47,7 +47,7 @@ func start(pos):
 	$CollisionShape2D.disabled = false
 
 
-func _on_Player_body_entered(_body):
+func _on_body_entered(_body):
 	hide() # Player disappears after being hit.
 	hit.emit()
 	# Must be deferred as we can't change physics properties on a physics callback.

2d/dodge_the_creeps/Player.tscn

@@ -72,4 +72,4 @@ process_material = SubResource("7")
 texture = ExtResource("2")
 speed_scale = 2.0
 
-[connection signal="body_entered" from="." to="." method="_on_Player_body_entered"]
+[connection signal="body_entered" from="." to="." method="_on_body_entered"]

mono/dodge_the_creeps/Dodge the Creeps with C#.csproj

@@ -1,6 +1,13 @@
-<Project Sdk="Godot.NET.Sdk/4.0.0-dev5">
+<Project Sdk="Godot.NET.Sdk/4.2.1">
   <PropertyGroup>
-    <TargetFramework>net472</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
+    <EnableDynamicLoading>true</EnableDynamicLoading>
     <RootNamespace>DodgeTheCreeps</RootNamespace>
   </PropertyGroup>
+  <ItemGroup>
+    <None Include="**/*.tscn" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="project.godot" />
+  </ItemGroup>
 </Project>

mono/dodge_the_creeps/HUD.cs

@@ -3,7 +3,7 @@
 public partial class HUD : CanvasLayer
 {
     [Signal]
-    public delegate void StartGame();
+    public delegate void StartGameEventHandler();
 
     public void ShowMessage(string text)
     {
@@ -19,11 +19,10 @@ public async void ShowGameOver()
         ShowMessage("Game Over");
 
         var messageTimer = GetNode<Timer>("MessageTimer");
-        await ToSignal(messageTimer, "timeout");
+        await ToSignal(messageTimer, Timer.SignalName.Timeout);
 
-        var messageLabel = GetNode<Label>("MessageLabel");
-        messageLabel.Text = "Dodge the\nCreeps!";
-        messageLabel.Show();
+        ShowMessage("Dodge the\nCreeps!");
+        await ToSignal(GetTree().CreateTimer(1.0), SceneTreeTimer.SignalName.Timeout);
 
         GetNode<Button>("StartButton").Show();
     }
@@ -36,7 +35,7 @@ public void UpdateScore(int score)
     public void OnStartButtonPressed()
     {
         GetNode<Button>("StartButton").Hide();
-        EmitSignal(nameof(StartGame));
+        EmitSignal(SignalName.StartGame);
     }
 
     public void OnMessageTimerTimeout()

mono/dodge_the_creeps/HUD.tscn

@@ -1,61 +1,62 @@
-[gd_scene load_steps=6 format=2]
+[gd_scene load_steps=5 format=3 uid="uid://b0ljm4vbkww0f"]
 
-[ext_resource path="res://HUD.cs" type="Script" id=1]
-[ext_resource path="res://fonts/Xolonium-Regular.ttf" type="FontData" id=2]
+[ext_resource type="Script" path="res://HUD.cs" id="1"]
+[ext_resource type="FontFile" uid="uid://cu4g4pt1v4fyv" path="res://fonts/Xolonium-Regular.ttf" id="2"]
 
-[sub_resource type="Font" id=1]
-size = 64
-use_mipmaps = true
-font_data = ExtResource( 2 )
+[sub_resource type="InputEventAction" id="InputEventAction_vmrao"]
+action = &"start_game"
 
-[sub_resource type="Font" id=2]
-size = 64
-use_mipmaps = true
-font_data = ExtResource( 2 )
-
-[sub_resource type="Font" id=3]
-size = 64
-use_mipmaps = true
-font_data = ExtResource( 2 )
+[sub_resource type="Shortcut" id="Shortcut_b2h4v"]
+events = [SubResource("InputEventAction_vmrao")]
 
 [node name="HUD" type="CanvasLayer"]
-script = ExtResource( 1 )
+script = ExtResource("1")
 
 [node name="ScoreLabel" type="Label" parent="."]
+anchors_preset = 5
 anchor_left = 0.5
 anchor_right = 0.5
 offset_left = -25.0
 offset_right = 25.0
 offset_bottom = 100.0
-custom_fonts/font = SubResource( 1 )
-text = "0
-"
-align = 1
+grow_horizontal = 2
+theme_override_fonts/font = ExtResource("2")
+theme_override_font_sizes/font_size = 64
+text = "0"
+horizontal_alignment = 1
 
 [node name="MessageLabel" type="Label" parent="."]
+anchors_preset = 8
 anchor_left = 0.5
 anchor_top = 0.5
 anchor_right = 0.5
 anchor_bottom = 0.5
-offset_left = -200.0
-offset_top = -150.0
-offset_right = 200.0
-custom_fonts/font = SubResource( 2 )
+offset_left = -240.0
+offset_top = -79.5
+offset_right = 240.0
+offset_bottom = 79.5
+grow_horizontal = 2
+grow_vertical = 2
+theme_override_fonts/font = ExtResource("2")
+theme_override_font_sizes/font_size = 64
 text = "Dodge the
-Creeps!"
-align = 1
-valign = 1
+Creeps"
+horizontal_alignment = 1
+autowrap_mode = 2
 
 [node name="StartButton" type="Button" parent="."]
+anchors_preset = 7
 anchor_left = 0.5
 anchor_top = 1.0
 anchor_right = 0.5
 anchor_bottom = 1.0
 offset_left = -100.0
-offset_top = -200.0
+offset_top = -140.0
 offset_right = 100.0
-offset_bottom = -100.0
-custom_fonts/font = SubResource( 3 )
+offset_bottom = -40.0
+theme_override_fonts/font = ExtResource("2")
+theme_override_font_sizes/font_size = 65
+shortcut = SubResource("Shortcut_b2h4v")
 text = "Start"
 
 [node name="MessageTimer" type="Timer" parent="."]

mono/dodge_the_creeps/Main.cs

@@ -5,15 +5,10 @@ public partial class Main : Node
 #pragma warning disable 649
     // We assign this in the editor, so we don't need the warning about not being assigned.
     [Export]
-    public PackedScene mobScene;
+    public PackedScene MobScene { get; set; }
 #pragma warning restore 649
 
-    public int score;
-
-    public override void _Ready()
-    {
-        GD.Randomize();
-    }
+    private int _score;
 
     public void GameOver()
     {
@@ -30,48 +25,53 @@ public void NewGame()
     {
         // Note that for calling Godot-provided methods with strings,
         // we have to use the original Godot snake_case name.
-        GetTree().CallGroup("mobs", "queue_free");
-        score = 0;
+        GetTree().CallGroup("mobs", Node.MethodName.QueueFree);
+        _score = 0;
 
         var player = GetNode<Player>("Player");
-        var startPosition = GetNode<Position2D>("StartPosition");
+        var startPosition = GetNode<Marker2D>("StartPosition");
         player.Start(startPosition.Position);
 
         GetNode<Timer>("StartTimer").Start();
 
         var hud = GetNode<HUD>("HUD");
-        hud.UpdateScore(score);
+        hud.UpdateScore(_score);
         hud.ShowMessage("Get Ready!");
 
         GetNode<AudioStreamPlayer>("Music").Play();
     }
 
-    public void OnStartTimerTimeout()
+    private void OnStartTimerTimeout()
     {
         GetNode<Timer>("MobTimer").Start();
         GetNode<Timer>("ScoreTimer").Start();
     }
 
-    public void OnScoreTimerTimeout()
+    private void OnScoreTimerTimeout()
     {
-        score++;
+        _score++;
 
-        GetNode<HUD>("HUD").UpdateScore(score);
+        GetNode<HUD>("HUD").UpdateScore(_score);
     }
 
-    public void OnMobTimerTimeout()
+    // We also specified this function name in PascalCase in the editor's connection window.
+    private void OnMobTimerTimeout()
     {
         // Note: Normally it is best to use explicit types rather than the `var`
         // keyword. However, var is acceptable to use here because the types are
-        // obviously PathFollow2D and Mob, since they appear later on the line.
+        // obviously Mob and PathFollow2D, since they appear later on the line.
+
+        if (MobScene is null)
+        {
+            GD.PrintErr("Mob scene is not set. You need to set it in the inspector.");
+            return;
+        }
+        // Create a new instance of the Mob scene.
+        Mob mob = MobScene.Instantiate<Mob>();
 
         // Choose a random location on Path2D.
         var mobSpawnLocation = GetNode<PathFollow2D>("MobPath/MobSpawnLocation");
-        mobSpawnLocation.Offset = GD.Randi();
-
-        // Create a Mob instance and add it to the scene.
-        var mob = (Mob)mobScene.Instantiate();
-        AddChild(mob);
+        mobSpawnLocation.ProgressRatio = GD.Randf();
 
         // Set the mob's direction perpendicular to the path direction.
         float direction = mobSpawnLocation.Rotation + Mathf.Pi / 2;
@@ -86,5 +86,8 @@ public void OnMobTimerTimeout()
         // Choose the velocity for the mob.
         var velocity = new Vector2((float)GD.RandRange(150.0, 250.0), 0);
         mob.LinearVelocity = velocity.Rotated(direction);
+
+        // Spawn the mob by adding it to the Main scene.
+        AddChild(mob);
     }
 }

mono/dodge_the_creeps/Main.tscn

@@ -1,27 +1,29 @@
-[gd_scene load_steps=8 format=2]
+[gd_scene load_steps=8 format=3 uid="uid://oq3nlri51jl3"]
 
-[ext_resource path="res://Main.cs" type="Script" id=1]
-[ext_resource path="res://Mob.tscn" type="PackedScene" id=2]
-[ext_resource path="res://Player.tscn" type="PackedScene" id=3]
-[ext_resource path="res://HUD.tscn" type="PackedScene" id=4]
-[ext_resource path="res://art/House In a Forest Loop.ogg" type="AudioStream" id=5]
-[ext_resource path="res://art/gameover.wav" type="AudioStream" id=6]
+[ext_resource type="Script" path="res://Main.cs" id="1_t4q5g"]
+[ext_resource type="PackedScene" uid="uid://ixe1g4hv46xs" path="res://Mob.tscn" id="2_06wge"]
+[ext_resource type="PackedScene" uid="uid://u1nbrhmt1vqu" path="res://Player.tscn" id="3_ouh2a"]
+[ext_resource type="PackedScene" uid="uid://b0ljm4vbkww0f" path="res://HUD.tscn" id="4_f8bkj"]
+[ext_resource type="AudioStream" uid="uid://cwm86fnmnh0sh" path="res://art/House In a Forest Loop.ogg" id="5_dnvwy"]
+[ext_resource type="AudioStream" uid="uid://i4rhnwpnljso" path="res://art/gameover.wav" id="5_r2snl"]
 
-[sub_resource type="Curve2D" id=1]
+[sub_resource type="Curve2D" id="1"]
 _data = {
 "points": PackedVector2Array(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 480, 0, 0, 0, 0, 0, 480, 720, 0, 0, 0, 0, 0, 720, 0, 0, 0, 0, 0, 0)
 }
+point_count = 5
 
 [node name="Main" type="Node"]
-script = ExtResource( 1 )
-mobScene = ExtResource( 2 )
+script = ExtResource("1_t4q5g")
+MobScene = ExtResource("2_06wge")
 
 [node name="ColorRect" type="ColorRect" parent="."]
+anchors_preset = 15
 anchor_right = 1.0
 anchor_bottom = 1.0
 color = Color(0.219608, 0.372549, 0.380392, 1)
 
-[node name="Player" parent="." instance=ExtResource( 3 )]
+[node name="Player" parent="." instance=ExtResource("3_ouh2a")]
 
 [node name="MobTimer" type="Timer" parent="."]
 wait_time = 0.5
@@ -32,21 +34,21 @@ wait_time = 0.5
 wait_time = 2.0
 one_shot = true
 
-[node name="StartPosition" type="Position2D" parent="."]
+[node name="StartPosition" type="Marker2D" parent="."]
 position = Vector2(240, 450)
 
 [node name="MobPath" type="Path2D" parent="."]
-curve = SubResource( 1 )
+curve = SubResource("1")
 
 [node name="MobSpawnLocation" type="PathFollow2D" parent="MobPath"]
 
-[node name="HUD" parent="." instance=ExtResource( 4 )]
+[node name="HUD" parent="." instance=ExtResource("4_f8bkj")]
 
 [node name="Music" type="AudioStreamPlayer" parent="."]
-stream = ExtResource( 5 )
+stream = ExtResource("5_dnvwy")
 
 [node name="DeathSound" type="AudioStreamPlayer" parent="."]
-stream = ExtResource( 6 )
+stream = ExtResource("5_r2snl")
 
 [connection signal="Hit" from="Player" to="." method="GameOver"]
 [connection signal="timeout" from="MobTimer" to="." method="OnMobTimerTimeout"]

mono/dodge_the_creeps/Mob.cs

@@ -1,16 +1,15 @@
 using Godot;
 
-public partial class Mob : RigidDynamicBody2D
+public partial class Mob : RigidBody2D
 {
     public override void _Ready()
     {
-        var animSprite = GetNode<AnimatedSprite2D>("AnimatedSprite2D");
-        animSprite.Playing = true;
-        string[] mobTypes = animSprite.Frames.GetAnimationNames();
-        animSprite.Animation = mobTypes[GD.Randi() % mobTypes.Length];
+        var animatedSprite = GetNode<AnimatedSprite2D>("AnimatedSprite2D");
+        string[] mobTypes = animatedSprite.SpriteFrames.GetAnimationNames();
+        animatedSprite.Play(mobTypes[GD.Randi() % mobTypes.Length]);
     }
 
-    public void OnVisibilityScreenExited()
+    public void OnVisibleOnScreenNotifier2DScreenExited()
     {
         QueueFree();
     }