added ui

src/Controls.cs

@@ -5,7 +5,8 @@ enum Control
     THRUST,
     LEFT,
     RIGHT,
-    SHOOT
+    SHOOT,
+    RESTART
 }
 
 static class ControlKeyExtension
@@ -15,13 +16,15 @@ static class ControlKeyExtension
         switch (c)
         {
             case Control.THRUST:
-                return SDL_Keycode.SDLK_UP;
+                return SDL_Keycode.SDLK_w;
             case Control.LEFT:
-                return SDL_Keycode.SDLK_LEFT;
+                return SDL_Keycode.SDLK_a;
             case Control.RIGHT:
-                return SDL_Keycode.SDLK_RIGHT;
+                return SDL_Keycode.SDLK_d;
             case Control.SHOOT:
                 return SDL_Keycode.SDLK_SPACE;
+            case Control.RESTART:
+                return SDL_Keycode.SDLK_r;
             default:
                 throw new ArgumentException("Invalid control");
         }

src/Scene.cs

@@ -5,6 +5,7 @@ class Scene
     public const int SCREEN_WIDTH = 800;
     public const int SCREEN_HEIGHT = 600;
     private Ship ship;
+    private UI ui;
     private Renderer renderer;
     private static Scene? instance;
 
@@ -13,10 +14,12 @@ class Scene
     public int Score = 0;
     public int Level = 1;
     public AudioPlayer AudioPlayer;
+    public bool running = true;
 
     public Scene(Renderer renderer)
     {
         this.ship = new Ship(SCREEN_WIDTH / 2, SCREEN_HEIGHT / 2);
+        this.ui = new UI();
         this.Shots = new HashSet<Shot>();
         this.Asteroids = new HashSet<Asteroid>();
         this.renderer = renderer;
@@ -26,12 +29,22 @@ class Scene
         instance = this;
     }
 
+    public void Restart()
+    {
+        this.running = true;
+        this.Score = 0;
+        this.Level = 1;
+        this.Asteroids.Clear();
+        this.Shots.Clear();
+        this.ship = new Ship(SCREEN_WIDTH / 2, SCREEN_HEIGHT / 2);
+        SpawnAsteroids(Level + 3);
+    }
+
     public int Run()
     {
-
+        SpawnAsteroids(Level + 3);
         double dx = 0;
         DateTime start = DateTime.Now;
-        SpawnAsteroids(Level + 3);
         while (true)
         {
             start = DateTime.Now;
@@ -39,6 +52,7 @@ class Scene
 
             var entities = new List<Object>();
             entities.Add(ship);
+            entities.Add(ui);
             entities.AddRange(Shots);
             entities.AddRange(Asteroids);
 
@@ -47,7 +61,7 @@ class Scene
 
             foreach (var entity in entities)
             {
-                if (entity is Logic)
+                if (entity is Logic && running)
                 {
                     ((Logic)entity).Update(keyState, dx);
                 }
@@ -62,8 +76,16 @@ class Scene
                 Level++;
                 SpawnAsteroids(Level + 3);
             }
+            if (!running)
+            {
+                if (keyState.isPressed(Control.RESTART))
+                {
+                    this.Restart();
+                }
+            }
 
             renderer.Present();
+            SDL_Delay(10);
             DateTime end = DateTime.Now;
             dx = (end - start).TotalSeconds;
         }
@@ -106,8 +128,7 @@ class Scene
 
     public void Loose()
     {
-        Console.WriteLine("You loose!");
-        Environment.Exit(0);
+        running = false;
     }
 
     private void pollEvents()

src/engine/Renderer.cs

@@ -52,4 +52,9 @@ class Renderer
     {
         SDL_SetRenderDrawColor(renderer, (byte)r, (byte)g, (byte)b, (byte)a);
     }
+
+    public IntPtr GetRaw()
+    {
+        return renderer;
+    }
 }

src/entities/Asteroid.cs

@@ -91,7 +91,5 @@ class Asteroid : Renderable, Logic
         Scene.Instance.AudioPlayer.Play(Sound.EXPLOSION);
         Scene.Instance.Score += (int)Size;
         Scene.Instance.Asteroids.Remove(this);
-        Console.WriteLine("Asteroid destroyed");
-        Console.WriteLine("Score: " + Scene.Instance.Score);
     }
 }

src/entities/Ship.cs

@@ -1,6 +1,6 @@
 class Ship : Logic, Renderable
 {
-    const double SPEED = 0.3;
+    const double SPEED = 3;
     const double ROTATION_SPEED = 5;
 
     double rotation = 0;

src/entities/UI.cs

@@ -0,0 +1,56 @@
+using static SDL2.SDL_ttf;
+using static SDL2.SDL;
+using System.Runtime.InteropServices;
+
+class UI : Renderable
+{
+    IntPtr font;
+
+    public UI()
+    {
+        TTF_Init();
+        this.font = SDL2.SDL_ttf.TTF_OpenFont("/home/gordon/git/dotnet-console/assets/font.ttf", 18);
+    }
+
+    public void Render(Renderer renderer, double dx)
+    {
+        var white = new SDL_Color();
+        white.r = 255;
+        white.g = 255;
+        white.b = 255;
+        white.a = 255;
+        var surfaceMessage = TTF_RenderText_Solid(this.font, "Score: " + Scene.Instance.Score, white);
+
+        var texture = SDL_CreateTextureFromSurface(renderer.GetRaw(), surfaceMessage);
+        int width;
+        int height;
+
+        SDL_QueryTexture(texture, out _, out _, out width, out height);
+
+        SDL_Rect rect = new SDL_Rect();
+        rect.x = 0;
+        rect.y = 0;
+        rect.w = width;
+        rect.h = height;
+
+        SDL_RenderCopy(renderer.GetRaw(), texture, IntPtr.Zero, ref rect);
+
+        if (!Scene.Instance.running)
+        {
+            var surfaceMessage2 = TTF_RenderText_Solid(this.font, "Press r to restart", white);
+            var texture2 = SDL_CreateTextureFromSurface(renderer.GetRaw(), surfaceMessage2);
+            int width2;
+            int height2;
+
+            SDL_QueryTexture(texture2, out _, out _, out width2, out height2);
+
+            SDL_Rect rect2 = new SDL_Rect();
+            rect2.x = Scene.SCREEN_WIDTH / 2 - width2 / 2;
+            rect2.y = Scene.SCREEN_HEIGHT / 2 - height2 / 2;
+            rect2.w = width2;
+            rect2.h = height2;
+
+            SDL_RenderCopy(renderer.GetRaw(), texture2, IntPtr.Zero, ref rect2);
+        }
+    }
+}