uniform sampler2D texture;



void main() {

	vec4 pixel = texture2D(texture, gl_TexCoord[0].xy);

	float gray = (pixel.r + pixel.g + pixel.b) / 3;



	gl_FragColor = vec4(gray, gray, gray, pixel.a) * gl_Color;

}

uniform sampler2D texture;



void main() {

	vec4 pixel = texture2D(texture, gl_TexCoord[0].xy);



	gl_FragColor = vec4(1 - pixel.r, 1 - pixel.g, 1 - pixel.b, pixel.a) * gl_Color;

}

uniform sampler2D texture;



// A weird way to generate a random number with a vec2 seed I guess.

float rand(vec2 co){

	return fract(sin(dot(co.xy ,vec2(12.9898,78.233))) * 43758.5453);

}



void main() {

	vec2 samplePos = gl_TexCoord[0].xy;

	samplePos.x += rand(samplePos) * 0.05;

	samplePos.y += rand(samplePos) * 0.05;

	vec4 pixel = texture2D(texture, samplePos);



	gl_FragColor = pixel * gl_Color;

}

using Otter;

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;



namespace SoundStuff {

  class Program {

    static void Main(string[] args) {

      // Create a Game.

      var game = new Game("Sound and Music");

      // Start the game with a new SoundScene.

      game.Start(new SoundScene());

    }

  }



  class SoundScene : Scene {

    // Load the sounds into individual Sound objects.

    public Sound SoundOne = new Sound("sound1.wav");

    public Sound SoundTwo = new Sound("sound2.wav");

    public Sound SoundThree = new Sound("sound3.wav");



    // Load the music into a Music object.

    public Music Music = new Music("music.ogg");



    public override void Update() {

      base.Update();



      // Play sounds for the 1, 2, and 3 keys being pressed.

      if (Input.KeyPressed(Key.Num1)) {

        SoundOne.Play();

      }

      if (Input.KeyPressed(Key.Num2)) {

        SoundTwo.Play();

      }

      if (Input.KeyPressed(Key.Num3)) {

        SoundThree.Play();

      }



      // Pause or play the music on the spacebar being pressed.

      if (Input.KeyPressed(Key.Space)) {

        if (Music.IsPlaying) {

          Music.Pause();

        }

        else {

          Music.Play();

        }

      }



      // Adjust the volume of the sounds with up and down keys.

      if (Input.KeyDown(Key.Up)) {

        Sound.GlobalVolume += 0.02f;

      }

      if (Input.KeyDown(Key.Down)) {

        Sound.GlobalVolume -= 0.02f;

      }



      // Adjust the volume of the music with left and right keys.

      if (Input.KeyDown(Key.Right)) {

        Music.GlobalVolume += 0.02f;

      }

      if (Input.KeyDown(Key.Left)) {

        Music.GlobalVolume -= 0.02f;

      }

    }

  }

}

using Otter;

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;



namespace OgmoEditorStuff {

  class Program {

    static void Main(string[] args) {



      // Create a new Game.

      var game = new Game("Ogmo Editor Example");

      // Set the background color to see stuff a little better.

      game.Color = Color.Cyan;



      // Create a new Scene to use for the Ogmo data.

      var scene = new Scene();



      // The path to the level to be loaded.

      var pathLevel = "Level.oel";

      // The path to the Ogmo Project to use when loading the level.

      var pathProject = "OgmoProject.oep";



      // Create a new OgmoProject using the .oep file.

      var OgmoProject = new OgmoProject(pathProject);



      // Ensure that the grid layer named "Solids" gets the Solid collision tag when loading.

      OgmoProject.RegisterTag(Tags.Solid, "Solids");



      // Load the level into the Scene.

      OgmoProject.LoadLevelFromFile(pathLevel, scene);



      // Start the game using the Scene with the loaded Ogmo Level.

      game.Start(scene);

    }

  }



  // Collision tags to use in the game.

  enum Tags {

    Solid,

    Player,

    Coin,

    Exit

  }



  // A Player Entity to match the Entity in the Ogmo Project.

  class Player : Entity {

    public Player(float x, float y) : base(x, y) {

      var img = Image.CreateRectangle(32, 32, Color.Red);

      AddGraphic(img);

      SetHitbox(32, 32, Tags.Player);

    }

  }

  

  // A Coin Entity to match the Coin in the Ogmo Project.

  class Coin : Entity {

    public Coin(float x, float y) : base(x, y) {

      var img = Image.CreateRectangle(16, 16, Color.Yellow);

      AddGraphic(img);

      SetHitbox(16, 16, Tags.Coin);



      // Adjust the position here because of the Origin in the Ogmo Project.

      X += 8;

      Y += 8;

    }

  }

  

  // An Exit Entity to match the Exit in the Ogmo Project.

  class Exit : Entity {

    public Exit(float x, float y) : base(x, y) {

      var img = Image.CreateRectangle(64, 64, Color.Magenta);

      AddGraphic(img);

      SetHitbox(64, 64, Tags.Exit);

    }

  }

}

  class Program {

    static void Main(string[] args) {

      // Create a Game.

      var game = new Game("Text Example");



      // Create a Scene.

      var scene = new Scene();



      // Create a Text object using the default font with size 16.

      var text1 = new Text("Just some basic text.", 16);

      // Position the Text.

      text1.SetPosition(20, 20);

      // Add it to the Scene's Graphic list for rendering.

      scene.AddGraphic(text1);



      // Create a Text object using the deafult font and a size of 32.

      var text2 = new Text("Bigger text!", 32);

      // Position the Text.

      text2.SetPosition(20, 50);

      // Add it for rendering.

      scene.AddGraphic(text2);



      // Create a Text object using the font yardsale.ttf and a size of 40.

      var text3 = new Text("Using a font", "yardsale.ttf", 40);

      // Position the Text.

      text3.SetPosition(20, 120);

      // Add it for rendering.

      scene.AddGraphic(text3);



      // Create a Text object using the font yardsale.ttf and a size of 40.

      var text4 = new Text("Using a shadow!", "yardsale.ttf", 40);

      // Set the shadow color of the Text.

      text4.ShadowColor = Color.Red;

      // Position the Shadow.

      text4.ShadowX = 1;

      text4.ShadowY = 3;

      // Position the Text.

      text4.SetPosition(20, 170);

      // Add it for rendering.

      scene.AddGraphic(text4);



      // Create a Text object using the font yardsale.ttf and a size of 40.

      var text5 = new Text("Using an outline!", "yardsale.ttf", 40);

      // Set the outline color of the Text.

      text5.OutlineColor = Color.Green;

      // Set the thickness of the outline.

      text5.OutlineThickness = 3;

      // Position the Text.

      text5.SetPosition(20, 220);

      // Add it for rendering.

      scene.AddGraphic(text5);



      // Start the Game using the created Scene.

      game.Start(scene);

    }

  }