started a monogame extended space game demo

Source/MonoGame.Extended.sln

@@ -25,31 +25,65 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MonoGame.Extended.Tests", "
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MonoGame.Extended.Content.Pipeline.Tests", "MonoGame.Extended.Content.Pipeline.Tests\MonoGame.Extended.Content.Pipeline.Tests.csproj", "{75D76507-9CB0-4A60-BE46-696DF6E7AA6C}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SpaceGame", "SpaceGame\SpaceGame.csproj", "{D5314E38-8F5A-48A5-A092-BD8BBEACB5DD}"
+	ProjectSection(ProjectDependencies) = postProject
+		{28CD24BD-432C-4987-9E9D-65CFCF120EA0} = {28CD24BD-432C-4987-9E9D-65CFCF120EA0}
+	EndProjectSection
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
+		Debug|x86 = Debug|x86
 		Release|Any CPU = Release|Any CPU
+		Release|x86 = Release|x86
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
 		{41724C52-3D50-45BB-81EB-3C8A247EAFD1}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{41724C52-3D50-45BB-81EB-3C8A247EAFD1}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{41724C52-3D50-45BB-81EB-3C8A247EAFD1}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{41724C52-3D50-45BB-81EB-3C8A247EAFD1}.Debug|x86.Build.0 = Debug|Any CPU
 		{41724C52-3D50-45BB-81EB-3C8A247EAFD1}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{41724C52-3D50-45BB-81EB-3C8A247EAFD1}.Release|Any CPU.Build.0 = Release|Any CPU
+		{41724C52-3D50-45BB-81EB-3C8A247EAFD1}.Release|x86.ActiveCfg = Release|Any CPU
+		{41724C52-3D50-45BB-81EB-3C8A247EAFD1}.Release|x86.Build.0 = Release|Any CPU
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 		{B7965D5F-83D2-4C04-B9FE-7D5FBF365F93}.Debug|Any CPU.Build.0 = Debug|x86
+		{B7965D5F-83D2-4C04-B9FE-7D5FBF365F93}.Debug|x86.ActiveCfg = Debug|x86
+		{B7965D5F-83D2-4C04-B9FE-7D5FBF365F93}.Debug|x86.Build.0 = Debug|x86
 		{B7965D5F-83D2-4C04-B9FE-7D5FBF365F93}.Release|Any CPU.ActiveCfg = Release|x86
+		{B7965D5F-83D2-4C04-B9FE-7D5FBF365F93}.Release|x86.ActiveCfg = Release|x86
+		{B7965D5F-83D2-4C04-B9FE-7D5FBF365F93}.Release|x86.Build.0 = Release|x86
 		{28CD24BD-432C-4987-9E9D-65CFCF120EA0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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+		{28CD24BD-432C-4987-9E9D-65CFCF120EA0}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{28CD24BD-432C-4987-9E9D-65CFCF120EA0}.Debug|x86.Build.0 = Debug|Any CPU
 		{28CD24BD-432C-4987-9E9D-65CFCF120EA0}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{28CD24BD-432C-4987-9E9D-65CFCF120EA0}.Release|Any CPU.Build.0 = Release|Any CPU
+		{28CD24BD-432C-4987-9E9D-65CFCF120EA0}.Release|x86.ActiveCfg = Release|Any CPU
+		{28CD24BD-432C-4987-9E9D-65CFCF120EA0}.Release|x86.Build.0 = Release|Any CPU
 		{CEF2144F-7E98-45A5-BE08-E6DBC307A5C1}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{CEF2144F-7E98-45A5-BE08-E6DBC307A5C1}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{CEF2144F-7E98-45A5-BE08-E6DBC307A5C1}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{CEF2144F-7E98-45A5-BE08-E6DBC307A5C1}.Debug|x86.Build.0 = Debug|Any CPU
 		{CEF2144F-7E98-45A5-BE08-E6DBC307A5C1}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{CEF2144F-7E98-45A5-BE08-E6DBC307A5C1}.Release|Any CPU.Build.0 = Release|Any CPU
+		{CEF2144F-7E98-45A5-BE08-E6DBC307A5C1}.Release|x86.ActiveCfg = Release|Any CPU
+		{CEF2144F-7E98-45A5-BE08-E6DBC307A5C1}.Release|x86.Build.0 = Release|Any CPU
 		{75D76507-9CB0-4A60-BE46-696DF6E7AA6C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{75D76507-9CB0-4A60-BE46-696DF6E7AA6C}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{75D76507-9CB0-4A60-BE46-696DF6E7AA6C}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{75D76507-9CB0-4A60-BE46-696DF6E7AA6C}.Debug|x86.Build.0 = Debug|Any CPU
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 		{75D76507-9CB0-4A60-BE46-696DF6E7AA6C}.Release|Any CPU.Build.0 = Release|Any CPU
+		{75D76507-9CB0-4A60-BE46-696DF6E7AA6C}.Release|x86.ActiveCfg = Release|Any CPU
+		{75D76507-9CB0-4A60-BE46-696DF6E7AA6C}.Release|x86.Build.0 = Release|Any CPU
+		{D5314E38-8F5A-48A5-A092-BD8BBEACB5DD}.Debug|Any CPU.ActiveCfg = Debug|x86
+		{D5314E38-8F5A-48A5-A092-BD8BBEACB5DD}.Debug|Any CPU.Build.0 = Debug|x86
+		{D5314E38-8F5A-48A5-A092-BD8BBEACB5DD}.Debug|x86.ActiveCfg = Debug|x86
+		{D5314E38-8F5A-48A5-A092-BD8BBEACB5DD}.Debug|x86.Build.0 = Debug|x86
+		{D5314E38-8F5A-48A5-A092-BD8BBEACB5DD}.Release|Any CPU.ActiveCfg = Release|x86
+		{D5314E38-8F5A-48A5-A092-BD8BBEACB5DD}.Release|x86.ActiveCfg = Release|x86
+		{D5314E38-8F5A-48A5-A092-BD8BBEACB5DD}.Release|x86.Build.0 = Release|x86
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

Source/MonoGame.Extended/Sprites/SpriteExtensions.cs

@@ -24,8 +24,8 @@ namespace MonoGame.Extended.Sprites
         public static void Draw(this SpriteBatch spriteBatch, SpriteSheetAnimator animator)
         {
             if (animator == null) throw new ArgumentNullException("animator");
-
-            if (animator.Sprite != null)
+            
+            if (animator.IsPlaying && animator.Sprite != null)
                 Draw(spriteBatch, animator.Sprite);
         }
 

Source/MonoGame.Extended/Sprites/SpriteSheetAnimator.cs

@@ -144,12 +144,13 @@ namespace MonoGame.Extended.Sprites
 
         public void PlayAnimation(string name, Action onCompleteAction = null)
         {
-            if(_currentAnimation != null && _currentAnimation.Name == name)
+            if(_currentAnimation != null && _currentAnimation.Name == name && IsPlaying)
                 return;
             
             _currentAnimation = _animations[name];
             _frameIndex = 0;
             _onCompleteAction = onCompleteAction;
+            IsPlaying = true;
         }
 
         public void Update(GameTime gameTime)
@@ -166,9 +167,9 @@ namespace MonoGame.Extended.Sprites
 
                 if (_frameIndex >= _currentAnimation.FrameIndicies.Length)
                 {
-                    if (IsLooping)
-                        _frameIndex = 0;
-                    else
+                    _frameIndex = 0;
+
+                    if (!IsLooping)
                         IsPlaying = false;
 
                     var onCompleteAction = _onCompleteAction;

Source/SpaceGame/BulletFactory.cs

@@ -0,0 +1,34 @@
+using Microsoft.Xna.Framework;
+using MonoGame.Extended.TextureAtlases;
+using SpaceGame.Entities;
+
+namespace SpaceGame
+{
+    public interface IBulletFactory
+    {
+        void Create(Vector2 position, Vector2 direction, float rotation, float speed);
+    }
+
+    public class BulletFactory : IBulletFactory
+    {
+        private readonly IEntityManager _entityManager;
+        private readonly TextureRegion2D _bulletRegion;
+
+        public BulletFactory(IEntityManager entityManager, TextureRegion2D bulletRegion)
+        {
+            _entityManager = entityManager;
+            _bulletRegion = bulletRegion;
+        }
+
+        public void Create(Vector2 position, Vector2 direction, float rotation, float speed)
+        {
+            var velocity = direction * speed;
+            var laser = new Laser(_bulletRegion, velocity)
+            {
+                Position = position,
+                Rotation = rotation
+            };
+            _entityManager.AddEntity(laser);
+        }
+    }
+}

Source/SpaceGame/Content/Content.mgcb

@@ -0,0 +1,194 @@
+
+#----------------------------- Global Properties ----------------------------#
+
+/outputDir:bin
+/intermediateDir:obj
+/platform:Windows
+/config:
+/profile:Reach
+/compress:False
+
+#-------------------------------- References --------------------------------#
+
+/reference:..\..\MonoGame.Extended.Content.Pipeline\bin\Debug\MonoGame.Extended.Content.Pipeline.dll
+
+#---------------------------------- Content ---------------------------------#
+
+#begin playerShip1_blue.png
+/importer:TextureImporter
+/processor:TextureProcessor
+/processorParam:ColorKeyColor=255,0,255,255
+/processorParam:ColorKeyEnabled=True
+/processorParam:GenerateMipmaps=False
+/processorParam:PremultiplyAlpha=True
+/processorParam:ResizeToPowerOfTwo=False
+/processorParam:MakeSquare=False
+/processorParam:TextureFormat=Color
+/build:playerShip1_blue.png
+
+#begin meteorBrown_big1.png
+/importer:TextureImporter
+/processor:TextureProcessor
+/processorParam:ColorKeyColor=255,0,255,255
+/processorParam:ColorKeyEnabled=True
+/processorParam:GenerateMipmaps=False
+/processorParam:PremultiplyAlpha=True
+/processorParam:ResizeToPowerOfTwo=False
+/processorParam:MakeSquare=False
+/processorParam:TextureFormat=Color
+/build:meteorBrown_big1.png
+
+#begin laserBlue03.png
+/importer:TextureImporter
+/processor:TextureProcessor
+/processorParam:ColorKeyColor=255,0,255,255
+/processorParam:ColorKeyEnabled=True
+/processorParam:GenerateMipmaps=False
+/processorParam:PremultiplyAlpha=True
+/processorParam:ResizeToPowerOfTwo=False
+/processorParam:MakeSquare=False
+/processorParam:TextureFormat=Color
+/build:laserBlue03.png
+
+#begin meteorBrown_big2.png
+/importer:TextureImporter
+/processor:TextureProcessor
+/processorParam:ColorKeyColor=255,0,255,255
+/processorParam:ColorKeyEnabled=True
+/processorParam:GenerateMipmaps=False
+/processorParam:PremultiplyAlpha=True
+/processorParam:ResizeToPowerOfTwo=False
+/processorParam:MakeSquare=False
+/processorParam:TextureFormat=Color
+/build:meteorBrown_big2.png
+
+#begin meteorBrown_big3.png
+/importer:TextureImporter
+/processor:TextureProcessor
+/processorParam:ColorKeyColor=255,0,255,255
+/processorParam:ColorKeyEnabled=True
+/processorParam:GenerateMipmaps=False
+/processorParam:PremultiplyAlpha=True
+/processorParam:ResizeToPowerOfTwo=False
+/processorParam:MakeSquare=False
+/processorParam:TextureFormat=Color
+/build:meteorBrown_big3.png
+
+#begin meteorBrown_big4.png
+/importer:TextureImporter
+/processor:TextureProcessor
+/processorParam:ColorKeyColor=255,0,255,255
+/processorParam:ColorKeyEnabled=True
+/processorParam:GenerateMipmaps=False
+/processorParam:PremultiplyAlpha=True
+/processorParam:ResizeToPowerOfTwo=False
+/processorParam:MakeSquare=False
+/processorParam:TextureFormat=Color
+/build:meteorBrown_big4.png
+
+#begin meteorBrown_med1.png
+/importer:TextureImporter
+/processor:TextureProcessor
+/processorParam:ColorKeyColor=255,0,255,255
+/processorParam:ColorKeyEnabled=True
+/processorParam:GenerateMipmaps=False
+/processorParam:PremultiplyAlpha=True
+/processorParam:ResizeToPowerOfTwo=False
+/processorParam:MakeSquare=False
+/processorParam:TextureFormat=Color
+/build:meteorBrown_med1.png
+
+#begin meteorBrown_med3.png
+/importer:TextureImporter
+/processor:TextureProcessor
+/processorParam:ColorKeyColor=255,0,255,255
+/processorParam:ColorKeyEnabled=True
+/processorParam:GenerateMipmaps=False
+/processorParam:PremultiplyAlpha=True
+/processorParam:ResizeToPowerOfTwo=False
+/processorParam:MakeSquare=False
+/processorParam:TextureFormat=Color
+/build:meteorBrown_med3.png
+
+#begin meteorBrown_small1.png
+/importer:TextureImporter
+/processor:TextureProcessor
+/processorParam:ColorKeyColor=255,0,255,255
+/processorParam:ColorKeyEnabled=True
+/processorParam:GenerateMipmaps=False
+/processorParam:PremultiplyAlpha=True
+/processorParam:ResizeToPowerOfTwo=False
+/processorParam:MakeSquare=False
+/processorParam:TextureFormat=Color
+/build:meteorBrown_small1.png
+
+#begin meteorBrown_small2.png
+/importer:TextureImporter
+/processor:TextureProcessor
+/processorParam:ColorKeyColor=255,0,255,255
+/processorParam:ColorKeyEnabled=True
+/processorParam:GenerateMipmaps=False
+/processorParam:PremultiplyAlpha=True
+/processorParam:ResizeToPowerOfTwo=False
+/processorParam:MakeSquare=False
+/processorParam:TextureFormat=Color
+/build:meteorBrown_small2.png
+
+#begin meteorBrown_tiny1.png
+/importer:TextureImporter
+/processor:TextureProcessor
+/processorParam:ColorKeyColor=255,0,255,255
+/processorParam:ColorKeyEnabled=True
+/processorParam:GenerateMipmaps=False
+/processorParam:PremultiplyAlpha=True
+/processorParam:ResizeToPowerOfTwo=False
+/processorParam:MakeSquare=False
+/processorParam:TextureFormat=Color
+/build:meteorBrown_tiny1.png
+
+#begin meteorBrown_tiny2.png
+/importer:TextureImporter
+/processor:TextureProcessor
+/processorParam:ColorKeyColor=255,0,255,255
+/processorParam:ColorKeyEnabled=True
+/processorParam:GenerateMipmaps=False
+/processorParam:PremultiplyAlpha=True
+/processorParam:ResizeToPowerOfTwo=False
+/processorParam:MakeSquare=False
+/processorParam:TextureFormat=Color
+/build:meteorBrown_tiny2.png
+
+#begin black.png
+/importer:TextureImporter
+/processor:TextureProcessor
+/processorParam:ColorKeyColor=255,0,255,255
+/processorParam:ColorKeyEnabled=True
+/processorParam:GenerateMipmaps=False
+/processorParam:PremultiplyAlpha=True
+/processorParam:ResizeToPowerOfTwo=False
+/processorParam:MakeSquare=False
+/processorParam:TextureFormat=Color
+/build:black.png
+
+#begin explosion-animations.aa
+/importer:AstridAnimatorImporter
+/processor:AstridAnimatorProcessor
+/build:explosion-animations.aa
+
+#begin regular-explosion.png
+/importer:TextureImporter
+/processor:TextureProcessor
+/processorParam:ColorKeyColor=255,0,255,255
+/processorParam:ColorKeyEnabled=True
+/processorParam:GenerateMipmaps=False
+/processorParam:PremultiplyAlpha=True
+/processorParam:ResizeToPowerOfTwo=False
+/processorParam:MakeSquare=False
+/processorParam:TextureFormat=Color
+/build:regular-explosion.png
+
+#begin regular-explosion-sheet.json
+/importer:TexturePackerJsonImporter
+/processor:TexturePackerProcessor
+/build:regular-explosion-sheet.json
+

Source/SpaceGame/Content/explosion-animations.aa

@@ -0,0 +1,20 @@
+{
+  "TextureAtlas": "regular-explosion-sheet.json",
+  "Animations": [
+    {
+      "Name": "explode",
+      "FramesPerSecond": 8,
+      "Frames": [
+        "regularExplosion00",
+        "regularExplosion01",
+        "regularExplosion02",
+        "regularExplosion03",
+        "regularExplosion04",
+        "regularExplosion05",
+        "regularExplosion06",
+        "regularExplosion07",
+        "regularExplosion08"
+      ]
+    }
+  ]
+}

Source/SpaceGame/Content/regular-explosion-sheet.json

@@ -0,0 +1,93 @@
+{"frames": [
+
+{
+	"filename": "regularExplosion00.png",
+	"frame": {"x":2,"y":2,"w":192,"h":192},
+	"rotated": false,
+	"trimmed": false,
+	"spriteSourceSize": {"x":0,"y":0,"w":192,"h":192},
+	"sourceSize": {"w":192,"h":192},
+	"pivot": {"x":0.5,"y":0.5}
+},
+{
+	"filename": "regularExplosion01.png",
+	"frame": {"x":196,"y":2,"w":152,"h":150},
+	"rotated": false,
+	"trimmed": false,
+	"spriteSourceSize": {"x":0,"y":0,"w":152,"h":150},
+	"sourceSize": {"w":152,"h":150},
+	"pivot": {"x":0.5,"y":0.5}
+},
+{
+	"filename": "regularExplosion02.png",
+	"frame": {"x":350,"y":2,"w":82,"h":91},
+	"rotated": false,
+	"trimmed": false,
+	"spriteSourceSize": {"x":0,"y":0,"w":82,"h":91},
+	"sourceSize": {"w":82,"h":91},
+	"pivot": {"x":0.5,"y":0.5}
+},
+{
+	"filename": "regularExplosion03.png",
+	"frame": {"x":2,"y":196,"w":92,"h":102},
+	"rotated": false,
+	"trimmed": false,
+	"spriteSourceSize": {"x":0,"y":0,"w":92,"h":102},
+	"sourceSize": {"w":92,"h":102},
+	"pivot": {"x":0.5,"y":0.5}
+},
+{
+	"filename": "regularExplosion04.png",
+	"frame": {"x":96,"y":196,"w":120,"h":124},
+	"rotated": false,
+	"trimmed": false,
+	"spriteSourceSize": {"x":0,"y":0,"w":120,"h":124},
+	"sourceSize": {"w":120,"h":124},
+	"pivot": {"x":0.5,"y":0.5}
+},
+{
+	"filename": "regularExplosion05.png",
+	"frame": {"x":218,"y":196,"w":133,"h":134},
+	"rotated": false,
+	"trimmed": false,
+	"spriteSourceSize": {"x":0,"y":0,"w":133,"h":134},
+	"sourceSize": {"w":133,"h":134},
+	"pivot": {"x":0.5,"y":0.5}
+},
+{
+	"filename": "regularExplosion06.png",
+	"frame": {"x":2,"y":332,"w":138,"h":140},
+	"rotated": false,
+	"trimmed": false,
+	"spriteSourceSize": {"x":0,"y":0,"w":138,"h":140},
+	"sourceSize": {"w":138,"h":140},
+	"pivot": {"x":0.5,"y":0.5}
+},
+{
+	"filename": "regularExplosion07.png",
+	"frame": {"x":142,"y":332,"w":143,"h":144},
+	"rotated": false,
+	"trimmed": false,
+	"spriteSourceSize": {"x":0,"y":0,"w":143,"h":144},
+	"sourceSize": {"w":143,"h":144},
+	"pivot": {"x":0.5,"y":0.5}
+},
+{
+	"filename": "regularExplosion08.png",
+	"frame": {"x":287,"y":332,"w":149,"h":151},
+	"rotated": false,
+	"trimmed": false,
+	"spriteSourceSize": {"x":0,"y":0,"w":149,"h":151},
+	"sourceSize": {"w":149,"h":151},
+	"pivot": {"x":0.5,"y":0.5}
+}],
+"meta": {
+	"app": "http://www.codeandweb.com/texturepacker",
+	"version": "1.0",
+	"image": "regular-explosion.png",
+	"format": "RGBA8888",
+	"size": {"w":438,"h":485},
+	"scale": "1",
+	"smartupdate": "$TexturePacker:SmartUpdate:98ae692ca0a173e85675618865346a23:050419c81994b49a0c48dc01e2d1b84c:0d3d2cb5875b2c23d78b2722385f0925$"
+}
+}

Source/SpaceGame/Entities/Entity.cs

@@ -0,0 +1,23 @@
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+
+namespace SpaceGame.Entities
+{
+    public abstract class Entity
+    {
+        protected Entity()
+        {
+            IsDestroyed = false;
+        }
+
+        public abstract void Update(GameTime gameTime);
+        public abstract void Draw(SpriteBatch spriteBatch);
+
+        public bool IsDestroyed { get; private set; }
+
+        public virtual void Destroy()
+        {
+            IsDestroyed = true;
+        }
+    }
+}

Source/SpaceGame/Entities/Explosion.cs

@@ -0,0 +1,34 @@
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+using MonoGame.Extended.Sprites;
+
+namespace SpaceGame.Entities
+{
+    public class Explosion : Entity
+    {
+        private readonly SpriteSheetAnimator _animator;
+
+        public Explosion(SpriteSheetAnimator animator, Vector2 position)
+        {
+            _animator = animator;
+            _animator.Sprite.Position = position;
+            _animator.IsLooping = false;
+            _animator.PlayAnimation("explode", Destroy);
+        }
+
+        public override void Destroy()
+        {
+            base.Destroy();
+        }
+
+        public override void Update(GameTime gameTime)
+        {
+            _animator.Update(gameTime);
+        }
+
+        public override void Draw(SpriteBatch spriteBatch)
+        {
+            spriteBatch.Draw(_animator);
+        }
+    }
+}

Source/SpaceGame/Entities/Laser.cs

@@ -0,0 +1,54 @@
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+using MonoGame.Extended.Sprites;
+using MonoGame.Extended.TextureAtlases;
+
+namespace SpaceGame.Entities
+{
+    public class Laser : Entity
+    {
+        public Laser(TextureRegion2D textureRegion, Vector2 velocity)
+        {
+            _timeToLive = 1.0f;
+            _sprite = new Sprite(textureRegion)
+            {
+                Scale = Vector2.One*0.5f
+            };
+
+            Velocity = velocity;
+        }
+
+        private readonly Sprite _sprite;
+        private float _timeToLive;
+
+        public Vector2 Position
+        {
+            get { return _sprite.Position; }
+            set { _sprite.Position = value; }
+        }
+
+        public float Rotation
+        {
+            get { return _sprite.Rotation; }
+            set { _sprite.Rotation = value; }
+        }
+
+        public Vector2 Velocity { get; set; }
+
+        public override void Update(GameTime gameTime)
+        {
+            var deltaTime = (float)gameTime.ElapsedGameTime.TotalSeconds;
+            Position += Velocity * deltaTime;
+
+            _timeToLive -= deltaTime;
+
+            if (_timeToLive <= 0)
+                Destroy();
+        }
+
+        public override void Draw(SpriteBatch spriteBatch)
+        {
+            spriteBatch.Draw(_sprite);
+        }
+    }
+}

Source/SpaceGame/Entities/Meteor.cs

@@ -0,0 +1,55 @@
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+using MonoGame.Extended.Shapes;
+using MonoGame.Extended.Sprites;
+using MonoGame.Extended.TextureAtlases;
+
+namespace SpaceGame.Entities
+{
+    public class Meteor : Entity
+    {
+        public Meteor(TextureRegion2D textureRegion, Vector2 velocity)
+        {
+            _sprite = new Sprite(textureRegion);
+            Shape = new CircleF(_sprite.Position, _radius);
+            Velocity = velocity;
+            HealthPoints = 10;
+        }
+
+        private const float _radius = 55f;
+        private readonly Sprite _sprite;
+
+        public CircleF Shape { get; private set; }
+        public int HealthPoints { get; private set; }
+        public Vector2 Velocity { get; set; }
+
+        public Vector2 Position
+        {
+            get { return _sprite.Position; }
+            set
+            {
+                _sprite.Position = value;
+                Shape = new CircleF(_sprite.Position, _radius);
+            }
+        }
+
+        public void Damage(int damage)
+        {
+            HealthPoints -= damage;
+
+            if (HealthPoints <= 0)
+                Destroy();
+        }
+
+        public override void Update(GameTime gameTime)
+        {
+            var deltaTime = (float)gameTime.ElapsedGameTime.TotalSeconds;
+            Position += Velocity * deltaTime;
+        }
+
+        public override void Draw(SpriteBatch spriteBatch)
+        {
+            spriteBatch.Draw(_sprite);
+        }
+    }
+}

Source/SpaceGame/Entities/Spaceship.cs

@@ -0,0 +1,83 @@
+using System;
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+using MonoGame.Extended;
+using MonoGame.Extended.Sprites;
+using MonoGame.Extended.TextureAtlases;
+
+namespace SpaceGame.Entities
+{
+    public class Spaceship : Entity
+    {
+        private readonly IBulletFactory _bulletFactory;
+
+        public Spaceship(TextureRegion2D textureRegion, IBulletFactory bulletFactory)
+        {
+            _bulletFactory = bulletFactory;
+            _sprite = new Sprite(textureRegion)
+            {
+                Scale = Vector2.One * 0.5f,
+                Position = new Vector2(400, 240)
+            };
+        }
+
+        private readonly Sprite _sprite;
+
+        public Vector2 Velocity { get; set; }
+
+        public Vector2 Position
+        {
+            get { return _sprite.Position; }
+            set { _sprite.Position = value; }
+        }
+
+        public float Rotation
+        {
+            get { return _sprite.Rotation - MathHelper.ToRadians(90); }
+            set { _sprite.Rotation = value + MathHelper.ToRadians(90); }
+        }
+
+        public Vector2 Direction => Vector2.UnitX.Rotate(Rotation);
+
+        private float _fireCooldown;
+
+        public override void Update(GameTime gameTime)
+        {
+            var deltaTime = (float) gameTime.ElapsedGameTime.TotalSeconds;
+
+            Position += Velocity * deltaTime;
+            Velocity *= 0.98f;
+
+            if (_fireCooldown > 0)
+                _fireCooldown -= deltaTime;
+        }
+
+        public override void Draw(SpriteBatch spriteBatch)
+        {
+            spriteBatch.Draw(_sprite);
+        }
+
+        public void Accelerate(float acceleration)
+        {
+            Velocity += Direction * acceleration;
+        }
+
+        public void LookAt(Vector2 point)
+        {
+            Rotation = (float) Math.Atan2(point.Y - Position.Y, point.X - Position.X);
+        }
+
+        public void Fire()
+        {
+            if (_fireCooldown > 0)
+                return;
+
+            var angle = Rotation + MathHelper.ToRadians(90);
+            var muzzle1Position = Position + new Vector2(14, 0).Rotate(angle);
+            var muzzle2Position = Position + new Vector2(-14, 0).Rotate(angle);
+            _bulletFactory.Create(muzzle1Position, Direction, angle, 550f);
+            _bulletFactory.Create(muzzle2Position, Direction, angle, 550f);
+            _fireCooldown = 0.2f;
+        }
+    }
+}

Source/SpaceGame/EntityManager.cs

@@ -0,0 +1,45 @@
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+using SpaceGame.Entities;
+
+namespace SpaceGame
+{
+    public interface IEntityManager
+    {
+        T AddEntity<T>(T entity) where T : Entity;
+    }
+
+    public class EntityManager : IEntityManager
+    {
+        public EntityManager()
+        {
+            _entities = new List<Entity>();
+        }
+
+        private readonly List<Entity> _entities;
+        public IEnumerable<Entity> Entities => _entities;
+
+        public T AddEntity<T>(T entity) where T : Entity
+        {
+            _entities.Add(entity);
+            return entity;
+        }
+
+        public void Update(GameTime gameTime)
+        {
+            foreach (var entity in _entities.Where(e => !e.IsDestroyed))
+                entity.Update(gameTime);
+
+            _entities.RemoveAll(e => e.IsDestroyed);
+        }
+
+        public void Draw(SpriteBatch spriteBatch)
+        {
+            foreach (var entity in _entities.Where(e => !e.IsDestroyed))
+                entity.Draw(spriteBatch);
+        }
+    }
+}

Source/SpaceGame/GameMain.cs

@@ -0,0 +1,153 @@
+using System;
+using System.IO;
+using System.Linq;
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+using Microsoft.Xna.Framework.Input;
+using MonoGame.Extended;
+using MonoGame.Extended.Sprites;
+using MonoGame.Extended.TextureAtlases;
+using MonoGame.Extended.ViewportAdapters;
+using SpaceGame.Entities;
+
+namespace SpaceGame
+{
+    public class GameMain : Game
+    {
+        // ReSharper disable once NotAccessedField.Local
+        private GraphicsDeviceManager _graphicsDeviceManager;
+        private SpriteBatch _spriteBatch;
+        private Texture2D _backgroundTexture;
+        private Spaceship _player;
+        private readonly Random _random;
+        private readonly EntityManager _entityManager;
+        private Camera2D _camera;
+
+        public GameMain()
+        {
+            _random = new Random();
+            _entityManager = new EntityManager();
+            _graphicsDeviceManager = new GraphicsDeviceManager(this);
+            //{
+                //IsFullScreen = true
+            //};
+            //_graphicsDeviceManager.ApplyChanges();
+
+            Content.RootDirectory = "Content";
+            Window.AllowUserResizing = true;
+            IsMouseVisible = true;
+
+        }
+
+        protected override void LoadContent()
+        {
+            _viewportAdapter = new BoxingViewportAdapter(Window, GraphicsDevice, 800, 480);
+            _camera = new Camera2D(_viewportAdapter);
+
+            _spriteBatch = new SpriteBatch(GraphicsDevice);
+
+            var workingFolder = Directory.GetCurrentDirectory();
+            _backgroundTexture = Content.Load<Texture2D>("black");
+
+            var bulletTexture = Content.Load<Texture2D>("laserBlue03");
+            var bulletRegion = new TextureRegion2D(bulletTexture);
+            var bulletFactory = new BulletFactory(_entityManager, bulletRegion);
+
+            var spaceshipTexture = Content.Load<Texture2D>("playerShip1_blue");
+            var spaceshipRegion = new TextureRegion2D(spaceshipTexture);
+            _player = _entityManager.AddEntity(new Spaceship(spaceshipRegion, bulletFactory));
+
+            var meteorTexture = Content.Load<Texture2D>("meteorBrown_big1");
+            var meteorRegion = new TextureRegion2D(meteorTexture);
+
+            for (var i = 0; i < 5; i++)
+            {
+                var x = _random.Next(2) == 0 ? 1 : -1;
+                var y = _random.Next(2) == 0 ? 1 : -1;
+                var velocity = new Vector2(x, y) * 10f;
+                var meteor = new Meteor(meteorRegion, velocity) {Position = new Vector2(100, 100) };
+
+                _entityManager.AddEntity(meteor);
+            }
+        }
+
+        protected override void UnloadContent()
+        {
+        }
+
+        private MouseState _previousMouseState;
+        private ViewportAdapter _viewportAdapter;
+
+        protected override void Update(GameTime gameTime)
+        {
+            var deltaTime = (float)gameTime.ElapsedGameTime.TotalSeconds;
+            var keyboardState = Keyboard.GetState();
+            var mouseState = Mouse.GetState();
+
+            if (keyboardState.IsKeyDown(Keys.Escape))
+                Exit();
+
+            const float acceleration = 5f;
+
+            if (keyboardState.IsKeyDown(Keys.W) || keyboardState.IsKeyDown(Keys.Up))
+                _player.Accelerate(acceleration);
+
+            if (keyboardState.IsKeyDown(Keys.S) || keyboardState.IsKeyDown(Keys.Down))
+                _player.Accelerate(-acceleration);
+
+            if (keyboardState.IsKeyDown(Keys.A) || keyboardState.IsKeyDown(Keys.Left))
+                _player.Rotation -= deltaTime * 3f;
+
+            if (keyboardState.IsKeyDown(Keys.D) || keyboardState.IsKeyDown(Keys.Right))
+                _player.Rotation += deltaTime * 3f;
+
+            if (keyboardState.IsKeyDown(Keys.Space) || mouseState.LeftButton == ButtonState.Pressed)
+                _player.Fire();
+
+            if(_previousMouseState.X != mouseState.X || _previousMouseState.Y != mouseState.Y)
+                _player.LookAt(_camera.ScreenToWorld(new Vector2(mouseState.X, mouseState.Y)));
+
+            _entityManager.Update(gameTime);
+
+
+            foreach (var laser in _entityManager.Entities.Where(e => e is Laser).Cast<Laser>().ToArray())
+            {
+                foreach (var meteor in _entityManager.Entities.Where(e => e is Meteor).Cast<Meteor>().ToArray())
+                {
+                    if (meteor.Shape.Contains(laser.Position))
+                    {
+                        meteor.Damage(1);
+                        laser.Destroy();
+                        var animator = Content.Load<SpriteSheetAnimator>("explosion-animations");
+                        _entityManager.AddEntity(new Explosion(animator, meteor.Position));
+                        return;
+                    }
+                }
+
+            }
+
+            _previousMouseState = mouseState;
+
+            _camera.LookAt(_player.Position +  _player.Velocity * 0.2f);
+
+            base.Update(gameTime);
+        }
+
+        protected override void Draw(GameTime gameTime)
+        {
+            GraphicsDevice.Clear(Color.Black);
+
+            var sourceRectangle = new Rectangle(0, 0, _viewportAdapter.VirtualWidth, _viewportAdapter.VirtualHeight);
+            sourceRectangle.Offset(_camera.Position);
+            _spriteBatch.Begin(samplerState: SamplerState.LinearWrap, transformMatrix: _camera.GetViewMatrix());
+            _spriteBatch.Draw(_backgroundTexture, _camera.Position, sourceRectangle, Color.White);
+            _spriteBatch.End();
+
+            _spriteBatch.Begin(samplerState: SamplerState.LinearClamp, transformMatrix: _camera.GetViewMatrix());
+            _entityManager.Draw(_spriteBatch);
+            _spriteBatch.End();
+
+            base.Draw(gameTime);
+        }
+    }
+}

Source/SpaceGame/Program.cs

@@ -0,0 +1,22 @@
+using System;
+
+namespace SpaceGame
+{
+#if WINDOWS || LINUX
+    /// <summary>
+    /// The main class.
+    /// </summary>
+    public static class Program
+    {
+        /// <summary>
+        /// The main entry point for the application.
+        /// </summary>
+        [STAThread]
+        static void Main()
+        {
+            using (var game = new GameMain())
+                game.Run();
+        }
+    }
+#endif
+}

Source/SpaceGame/Properties/AssemblyInfo.cs

@@ -0,0 +1,36 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("SpaceGame")]
+[assembly: AssemblyProduct("SpaceGame")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyCopyright("Copyright ©  2015")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible 
+// to COM components.  If you need to access a type in this assembly from 
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+[assembly: Guid("8d113802-8e43-4c89-a06e-a7d0625f70e6")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers 
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("3.5.0.629")]
+[assembly: AssemblyFileVersion("3.5.0.629")]

Source/SpaceGame/SpaceGame.csproj

@@ -0,0 +1,113 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
+    <ProductVersion>8.0.30703</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{D5314E38-8F5A-48A5-A092-BD8BBEACB5DD}</ProjectGuid>
+    <OutputType>WinExe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>SpaceGame</RootNamespace>
+    <AssemblyName>SpaceGame</AssemblyName>
+    <FileAlignment>512</FileAlignment>
+    <MonoGamePlatform>WindowsGL</MonoGamePlatform>
+    <MonoGameContentBuilderExe>
+    </MonoGameContentBuilderExe>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
+    <PlatformTarget>x86</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\WindowsGL\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE;WINDOWS</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
+    <PlatformTarget>x86</PlatformTarget>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\WindowsGL\Release\</OutputPath>
+    <DefineConstants>TRACE;WINDOWS</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup>
+    <ApplicationIcon>Icon.ico</ApplicationIcon>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="BulletFactory.cs" />
+    <Compile Include="Entities\Entity.cs" />
+    <Compile Include="Entities\Explosion.cs" />
+    <Compile Include="Entities\Laser.cs" />
+    <Compile Include="Entities\Meteor.cs" />
+    <Compile Include="Entities\Spaceship.cs" />
+    <Compile Include="EntityManager.cs" />
+    <Compile Include="GameMain.cs" />
+    <Compile Include="Program.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <Reference Include="MonoGame.Framework, Version=3.4.0.459, Culture=neutral, processorArchitecture=MSIL">
+      <HintPath>..\packages\MonoGame.Framework.WindowsGL.3.4.0.459\lib\net40\MonoGame.Framework.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
+    <Reference Include="NVorbis">
+      <HintPath>$(MSBuildProgramFiles32)\MonoGame\v3.0\Assemblies\WindowsGL\NVorbis.dll</HintPath>
+    </Reference>
+    <Reference Include="OpenTK, Version=1.1.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4, processorArchitecture=MSIL">
+      <HintPath>..\packages\MonoGame.Framework.WindowsGL.3.4.0.459\lib\net40\OpenTK.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
+    <Reference Include="System" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Content Include="Content\black.png" />
+    <Content Include="Content\laserBlue03.png" />
+    <Content Include="Content\meteorBrown_big1.png" />
+    <Content Include="Content\meteorBrown_big2.png" />
+    <Content Include="Content\meteorBrown_big3.png" />
+    <Content Include="Content\meteorBrown_big4.png" />
+    <Content Include="Content\meteorBrown_med1.png" />
+    <Content Include="Content\meteorBrown_med3.png" />
+    <Content Include="Content\meteorBrown_small1.png" />
+    <Content Include="Content\meteorBrown_small2.png" />
+    <Content Include="Content\meteorBrown_tiny1.png" />
+    <Content Include="Content\meteorBrown_tiny2.png" />
+    <Content Include="Content\playerShip1_blue.png" />
+    <Content Include="Content\regular-explosion.png" />
+    <Content Include="Icon.ico" />
+  </ItemGroup>
+  <ItemGroup>
+    <MonoGameContentReference Include="Content\Content.mgcb" />
+  </ItemGroup>
+  <ItemGroup>
+    <Content Include="Content\explosion-animations.aa" />
+    <Content Include="Content\regular-explosion-sheet.json" />
+    <None Include="packages.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\MonoGame.Extended\MonoGame.Extended.csproj">
+      <Project>{41724c52-3d50-45bb-81eb-3c8a247eafd1}</Project>
+      <Name>MonoGame.Extended</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <!-- Specify the search path explicitly so the ResolveAssemblyReferences task picks the right ones -->
+  <Target Name="BeforeResolveReferences">
+    <CreateProperty Value="$(MSBuildProgramFiles32)\MonoGame\v3.0\Assemblies\Windows;$(AssemblySearchPaths)">
+      <Output TaskParameter="Value" PropertyName="AssemblySearchPaths" />
+    </CreateProperty>
+  </Target>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <Import Project="$(MSBuildExtensionsPath)\MonoGame\v3.0\MonoGame.Content.Builder.targets" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>

Source/SpaceGame/packages.config

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="MonoGame.Framework.WindowsGL" version="3.4.0.459" targetFramework="net40" />
+</packages>