Setup

FlappyBird/scripts/Ground.cs

@@ -0,0 +1,14 @@
+using Godot;
+using System;
+
+public class Ground : Area2D
+{
+	private void _on_Ground_player_entered(object body)
+	{
+		if (body is Player)
+		{
+			Player player = body as Player;
+			player.die();
+		}
+	}
+}

FlappyBird/scripts/Menu.cs

@@ -0,0 +1,13 @@
+using Godot;
+using System;
+
+public class Menu : Control
+{
+	public override void _Process(float delta)
+	{
+		if (Input.IsActionJustPressed("Click"))
+		{
+			GetTree().ChangeScene("res://World.tscn");
+		}
+	}
+}

FlappyBird/scripts/Obstacle.cs

@@ -0,0 +1,36 @@
+using Godot;
+using System;
+
+public class Obstacle : Area2D
+{
+	private const float moveSpeed = 145f;
+	
+
+	private void _on_Pipe_player_entered(object body)
+	{
+		if (body is Player)
+		{
+			Player player = body as Player;
+			player.die();
+		}
+	}
+	
+	private void _on_Obstacle_player_exited(object body)
+	{
+		if (body is Player)
+		{
+			Player player = body as Player;
+			player.score_increase();
+		}
+	}
+
+	public override void _PhysicsProcess(float delta)
+	{
+		Translate(new Vector2(-moveSpeed * delta, 0));
+
+		if (Position.x < -200)
+		{
+			QueueFree();
+		}
+	}
+}

FlappyBird/scripts/Player.cs

@@ -0,0 +1,52 @@
+using Godot;
+using System;
+
+public class Player : RigidBody2D
+{
+	private const float jumpForce = -225f;
+	private bool alive = true;
+	private int score = 0;
+	private Label labelScore;
+	private ulong timeDied = 0;
+	private const int respawnTime = 3;
+	private Sprite spriteGameOver;
+
+	public override void _Ready()
+	{
+		labelScore = GetNode<Label>("../Overlay/Score");
+		spriteGameOver = GetNode<Sprite>("../GameOver");
+	}
+
+	public override void _PhysicsProcess(float delta)
+	{
+		if (Input.IsActionJustPressed("Click") && alive)
+		{
+			LinearVelocity = new Vector2(0, jumpForce);
+		}
+
+		if (!alive && OS.GetUnixTime() - timeDied > respawnTime)
+		{
+			GetTree().ChangeScene("res://Menu.tscn");
+		}
+	}
+
+	public void die()
+	{
+		if(alive)
+		{
+			alive = false;
+			GravityScale = 0;
+			timeDied = OS.GetUnixTime();
+			spriteGameOver.Visible = true;
+		}
+	}
+
+	public void score_increase()
+	{
+		if(alive)
+		{
+			score++;
+			labelScore.Text = score.ToString();
+		}
+	}
+}

FlappyBird/scripts/World.cs

@@ -0,0 +1,23 @@
+using Godot;
+using System;
+using Object = Godot.Object;
+
+public class World : Node2D
+{
+	//-260 240
+	private Sprite spriteBackground;
+	private PackedScene prefabObstacle = GD.Load<PackedScene>("res://Obstacle.tscn");
+	private Random random = new Random();
+
+	public override void _Ready()
+	{
+		spriteBackground = GetNode<Sprite>("Background");
+	}
+
+	private void _on_Timer_timeout()
+	{
+		Area2D instance = prefabObstacle.Instance() as Area2D;
+		instance.Position = new Vector2(instance.Position.x, random.Next(-260, 140));
+		spriteBackground.AddChild(instance);
+	}
+}