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+using System;
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+
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+using Microsoft.Xna.Framework;
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+using Microsoft.Xna.Framework.Graphics;
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+using Microsoft.Xna.Framework.Input;
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+
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+namespace Demo3
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+{
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+ /// <summary>
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+ /// This is the main type for your game.
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+ /// </summary>
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+ public class Game1 : Game
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+ {
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+ #region lifecycle
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+
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+ public Game1()
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+ {
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+ _Graphics = new GraphicsDeviceManager(this);
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+ _Graphics.GraphicsProfile = GraphicsProfile.HiDef;
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+
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+ Content.RootDirectory = "Content";
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+ }
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+
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+ protected override void Initialize()
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+ {
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+ // TODO: Add your initialization logic here
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+
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+ this.Window.Title = "SharpGLTF - MonoGame Scene";
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+ this.Window.AllowUserResizing = true;
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+ this.Window.AllowAltF4 = true;
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+
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+ base.Initialize();
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+ }
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+
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+ protected override void Dispose(bool disposing)
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+ {
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+ base.Dispose(disposing);
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+ }
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+
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+ #endregion
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+
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+ #region resources
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+
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+ private readonly GraphicsDeviceManager _Graphics;
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+
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+ // these are the actual hardware resources that represent every model's geometry.
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+
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+ ModelTemplate _AvodadoTemplate;
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+ ModelTemplate _BrainStemTemplate;
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+ ModelTemplate _CesiumManTemplate;
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+ ModelTemplate _HauntedHouseTemplate;
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+ ModelTemplate _SharkTemplate;
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+
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+ #endregion
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+
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+ #region content loading
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+
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+ protected override void LoadContent()
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+ {
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+ ModelTemplate _load(string filePath)
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+ {
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+ return Microsoft.Xna.Framework.Content.Pipeline.Graphics.FormatGLTF.LoadModel(filePath, this.GraphicsDevice);
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+ }
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+
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+ _AvodadoTemplate = _load("Content\\Avocado.glb");
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+ _BrainStemTemplate = _load("Content\\BrainStem.glb");
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+ _CesiumManTemplate = _load("Content\\CesiumMan.glb");
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+ _HauntedHouseTemplate = _load("Content\\haunted_house.glb");
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+ _SharkTemplate = _load("Content\\shark.glb");
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+ }
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+
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+ protected override void UnloadContent()
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+ {
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+ _AvodadoTemplate?.Dispose();
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+ _AvodadoTemplate = null;
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+
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+ _BrainStemTemplate?.Dispose();
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+ _BrainStemTemplate = null;
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+
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+ _CesiumManTemplate?.Dispose();
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+ _CesiumManTemplate = null;
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+
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+ _HauntedHouseTemplate?.Dispose();
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+ _HauntedHouseTemplate = null;
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+
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+ _SharkTemplate?.Dispose();
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+ _SharkTemplate = null;
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+ }
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+
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+ #endregion
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+
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+ #region game loop
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+
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+ private PBREnvironment _LightsAndFog = PBREnvironment.CreateDefault();
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+
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+ // these are the scene instances we create for every glTF model we want to render on screen.
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+ // Instances are designed to be as lightweight as possible, so it should not be a problem to
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+ // create as many of them as you need at runtime.
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+ private ModelLayerInstance _HauntedHouse;
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+ private ModelLayerInstance _BrainStem;
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+ private ModelLayerInstance _Avocado;
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+ private ModelLayerInstance _CesiumMan1;
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+ private ModelLayerInstance _CesiumMan2;
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+ private ModelLayerInstance _CesiumMan3;
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+ private ModelLayerInstance _CesiumMan4;
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+ private ModelLayerInstance _Shark;
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+
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+ protected override void Update(GameTime gameTime)
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+ {
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+ // For Mobile devices, this logic will close the Game when the Back button is pressed
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+ if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed || Keyboard.GetState().IsKeyDown(Keys.Escape))
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+ {
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+ Exit();
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+ }
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+
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+ // create as many instances as we need from the templates
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+
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+ if (_Avocado == null) _Avocado = _AvodadoTemplate.DefaultLayer.CreateInstance();
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+ if (_HauntedHouse == null) _HauntedHouse = _HauntedHouseTemplate.DefaultLayer.CreateInstance();
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+ if (_BrainStem == null) _BrainStem = _BrainStemTemplate.DefaultLayer.CreateInstance();
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+
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+ if (_CesiumMan1 == null) _CesiumMan1 = _CesiumManTemplate.DefaultLayer.CreateInstance();
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+ if (_CesiumMan2 == null) _CesiumMan2 = _CesiumManTemplate.DefaultLayer.CreateInstance();
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+ if (_CesiumMan3 == null) _CesiumMan3 = _CesiumManTemplate.DefaultLayer.CreateInstance();
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+ if (_CesiumMan4 == null) _CesiumMan4 = _CesiumManTemplate.DefaultLayer.CreateInstance();
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+
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+ if (_Shark == null) _Shark = _SharkTemplate.DefaultLayer.CreateInstance();
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+
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+ // animate each instance individually.
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+
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+ var animTime = (float)gameTime.TotalGameTime.TotalSeconds;
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+
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+ _Avocado.WorldMatrix = Matrix.CreateScale(30) * Matrix.CreateRotationY(animTime * 0.3f) * Matrix.CreateTranslation(-4, 4, 1);
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+ _HauntedHouse.WorldMatrix = Matrix.CreateScale(20) * Matrix.CreateRotationY(1);
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+
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+ _BrainStem.WorldMatrix = Matrix.CreateTranslation(0, 0.5f, 8);
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+ _BrainStem.Armature.SetAnimationFrame(0, 0.7f * animTime);
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+
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+ _CesiumMan1.WorldMatrix = Matrix.CreateTranslation(-3, 0, 5);
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+ _CesiumMan1.Armature.SetAnimationFrame(0, 0.3f);
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+
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+ _CesiumMan2.WorldMatrix = Matrix.CreateTranslation(-2, 0, 5);
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+ _CesiumMan2.Armature.SetAnimationFrame(0, 0.5f * animTime);
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+
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+ _CesiumMan3.WorldMatrix = Matrix.CreateTranslation(2, 0, 5);
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+ _CesiumMan3.Armature.SetAnimationFrame(0, 1.0f * animTime);
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+
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+ _CesiumMan4.WorldMatrix = Matrix.CreateTranslation(3, 0, 5);
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+ _CesiumMan4.Armature.SetAnimationFrame(0, 1.5f * animTime);
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+
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+ _Shark.WorldMatrix = Matrix.CreateTranslation(5, 3, -6);
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+ _Shark.Armature.SetAnimationFrame(0, 1.0f * animTime);
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+
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+ base.Update(gameTime);
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+ }
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+
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+
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+ protected override void Draw(GameTime gameTime)
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+ {
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+ GraphicsDevice.Clear(Color.DarkSlateGray);
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+
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+ base.Draw(gameTime);
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+
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+ // setup drawing context
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+
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+ var animTime = (float)gameTime.TotalGameTime.TotalSeconds;
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+
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+ var lookAt = new Vector3(0, 2, 0);
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+ var camPos = new Vector3((float)Math.Sin(animTime * 0.5f) * 2, 2, 12);
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+ var camera = Matrix.CreateWorld(camPos, lookAt - camPos, Vector3.UnitY);
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+
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+ var ctx = new ModelDrawingContext(_Graphics.GraphicsDevice);
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+
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+ ctx.SetCamera(camera);
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+
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+ // draw all the instances.
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+
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+ ctx.DrawSceneInstances
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+ (
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+
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+ // environment lights and fog
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+ _LightsAndFog,
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+
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+ // all model instances
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+ _Avocado, _HauntedHouse, _BrainStem, _CesiumMan1, _CesiumMan2, _CesiumMan3, _CesiumMan4, _Shark
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+
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+ );
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+ }
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+
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+ #endregion
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+ }
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+}
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Vicente Penades
