// OnLoad() is called when the GameObject is added to the IGameObjectService.
protected override void OnLoad()
{
// ----- Create prototype of a lava ball:
// Use a sphere for physics simulation.
_bodyPrototype = new RigidBody(new SphereShape(0.5f));
// Load the graphics model.
var content = _services.GetInstance<ContentManager>();
_modelPrototype = content.Load<ModelNode>("LavaBall/LavaBall").Clone();
// Attach a point light to the model. The light projects the glowing lava
// veins (cube map texture) onto the environment.
_pointLight = new PointLight
{
Color = new Vector3F(1, 1, 1),
DiffuseIntensity = 2,
SpecularIntensity = 2,
Range = 1.5f,
Attenuation = 0.5f,
Texture = content.Load<TextureCube>("LavaBall/LavaCubeMap"),
};
var pointLightNode = new LightNode(_pointLight);
_modelPrototype.Children.Add(pointLightNode);
// Get the emissive color binding of the material because the emissive color
// will be animated.
// The model contains one mesh node with a single material.
var meshNode = (MeshNode)_modelPrototype.Children[0];
var mesh = meshNode.Mesh;
var material = mesh.Materials[0];
// The material contains several effect bindings. The "EmissiveColor" is applied
// in the "Material" pass.
// (For reference see material definition file: Samples\Media\LavaBall\Lava.drmat)
_emissiveColorBinding = (ConstParameterBinding<Vector3>)material["Material"].ParameterBindings["EmissiveColor"];
// Use the animation service to animate glow intensity of the lava.
var animationService = _services.GetInstance<IAnimationService>();
// Create an AnimatableProperty<float>, which stores the animation value.
_glowIntensity = new AnimatableProperty<float>();
// Create sine animation and play the animation back-and-forth.
var animation = new SingleFromToByAnimation
{
From = 0.3f,
To = 3.0f,
Duration = TimeSpan.FromSeconds(1),
EasingFunction = new SineEase { Mode = EasingMode.EaseInOut },
};
var clip = new AnimationClip<float>
{
Animation = animation,
Duration = TimeSpan.MaxValue,
LoopBehavior = LoopBehavior.Oscillate
};
animationService.StartAnimation(clip, _glowIntensity).AutoRecycle();
}
// OnLoad() is called when the GameObject is added to the IGameObjectService.
protected override void OnLoad()
{
var particleSystemService = _services.GetInstance<IParticleSystemService>();
// The campfire consists of two particle systems (fire + smoke) and a light source.
//
// _campfire (SceneNode)
// |
// +-- _fireParticles (ParticleSystemNode)
// |
// +-- _smokeParticles (ParticleSystemNode)
// |
// +-- _light (LightNode)
// Use a basic scene node as the root node for the campfire.
_campfire = new SceneNode
{
Name = "Campfire",
PoseLocal = new Pose(new Vector3F(0, 0, -1)),
Children = new SceneNodeCollection()
};
// Add fire particles.
var contentManager = _services.GetInstance<ContentManager>();
var particleSystem = CreateFire(contentManager);
particleSystemService.ParticleSystems.Add(particleSystem);
_fireParticles = new ParticleSystemNode(particleSystem)
{
// The fire effect lies in the xy plane and shoots into the forward direction (= -z axis).
// Therefore we rotate the particle system to shoot upwards.
PoseLocal = new Pose(new Vector3F(0, 0.2f, 0), Matrix33F.CreateRotationX(ConstantsF.PiOver2))
};
_campfire.Children.Add(_fireParticles);
// Add smoke particles.
particleSystem = CreateSmoke(contentManager);
particleSystemService.ParticleSystems.Add(particleSystem);
_smokeParticles = new ParticleSystemNode(particleSystem)
{
PoseLocal = new Pose(new Vector3F(0, 0.2f, 0), Matrix33F.CreateRotationX(ConstantsF.PiOver2))
};
_campfire.Children.Add(_smokeParticles);
// Add a point light that illuminates the environment.
var light = new PointLight
{
Attenuation = 0.1f,
Color = new Vector3F(1, 0.2f, 0),
HdrScale = 20,
Range = 4
};
_light = new LightNode(light)
{
// Optional: We can make this light cast shadows - but this will cost performance!
//Shadow = new CubeMapShadow { PreferredSize = 64, FilterRadius = 2, JitterResolution = 2048 },
PoseLocal = new Pose(new Vector3F(0, 1f, 0))
};
_campfire.Children.Add(_light);
// Add campfire to scene.
var scene = _services.GetInstance<IScene>();
scene.Children.Add(_campfire);
// Particle effects can be added multiple times to the scene (= "instancing").
// Uncomment the following lines to add a few more instance to the scene.
//for (int i = 0; i < 10; i++)
//{
// var clone = _campfire.Clone();
// // Set random scale, position, orientation.
// clone.ScaleLocal = _random.NextVector3F(0.5f, 1.5f);
// var pose = _campfire.PoseWorld;
// pose.Position.X += _random.NextFloat(-10, 10);
// pose.Position.Z += _random.NextFloat(-10, 10);
// pose.Orientation = Matrix33F.CreateRotationY(_random.NextFloat(-ConstantsF.PiOver2, ConstantsF.PiOver2));
// clone.PoseLocal = pose;
// scene.Children.Add(clone);
//}
// Add GUI controls to the Options window.
var sampleFramework = _services.GetInstance<SampleFramework>();
var optionsPanel = sampleFramework.AddOptions("Game Objects");
var panel = SampleHelper.AddGroupBox(optionsPanel, "CampfireObject");
SampleHelper.AddCheckBox(
panel,
"Enable campfire",
IsEnabled,
isChecked => IsEnabled = isChecked);
}
public ShadowSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
SampleFramework.IsMouseVisible = false;
_graphicsScreen = new DeferredGraphicsScreen(Services)
{
// For debugging: Disable materials and only show light buffer.
DebugMode = DeferredGraphicsDebugMode.VisualizeDiffuseLightBuffer
};
_graphicsScreen.DrawReticle = true;
GraphicsService.Screens.Insert(0, _graphicsScreen);
GameObjectService.Objects.Add(new DeferredGraphicsOptionsObject(Services));
Services.Register(typeof(DebugRenderer), null, _graphicsScreen.DebugRenderer);
Services.Register(typeof(IScene), null, _graphicsScreen.Scene);
// Add gravity and damping to the physics simulation.
Simulation.ForceEffects.Add(new Gravity());
Simulation.ForceEffects.Add(new Damping());
// Add a custom game object which controls the camera.
var cameraGameObject = new CameraObject(Services);
GameObjectService.Objects.Add(cameraGameObject);
_graphicsScreen.ActiveCameraNode = cameraGameObject.CameraNode;
GameObjectService.Objects.Add(new GrabObject(Services));
CreateScene(Services, ContentManager, _graphicsScreen);
// Disable existing lights.
foreach (var lightNode in _graphicsScreen.Scene.GetDescendants().OfType<LightNode>())
lightNode.IsEnabled = false;
// Add a dim ambient light.
_graphicsScreen.Scene.Children.Add(
new LightNode(
new AmbientLight
{
HemisphericAttenuation = 1,
Intensity = 0.001f,
}));
// Add some test lights with shadows.
_spotlight = new Spotlight { Range = 10, FalloffAngle = 0.8f, CutoffAngle = 1f };
_standardShadow = new StandardShadow();
_spotlightNode = new LightNode(_spotlight)
{
PoseWorld = new Pose(new Vector3F(0, 1f, -2)),
Shadow = _standardShadow,
IsEnabled = true,
};
_graphicsScreen.Scene.Children.Add(_spotlightNode);
_cubeMapShadow = new CubeMapShadow();
_pointLight = new PointLight { Range = 10, };
_pointLightNode = new LightNode(_pointLight)
{
PoseWorld = new Pose(new Vector3F(0, 1f, -2)),
Shadow = _cubeMapShadow,
IsEnabled = false,
};
_graphicsScreen.Scene.Children.Add(_pointLightNode);
CreateGuiControls();
}
// OnLoad() is called when the GameObject is added to the IGameObjectService.
protected override void OnLoad()
{
var contentManager = _services.GetInstance<ContentManager>();
if (_type == 1)
{
// A simple cube.
RigidBody = new RigidBody(new BoxShape(1, 1, 1));
ModelNode = contentManager.Load<ModelNode>("RustyCube/RustyCube").Clone();
}
else if (_type == 2)
{
// Another simple cube.
RigidBody = new RigidBody(new BoxShape(1, 1, 1));
ModelNode = contentManager.Load<ModelNode>("MetalGrateBox/MetalGrateBox").Clone();
}
else if (_type == 3)
{
// A TV-like box.
RigidBody = new RigidBody(new BoxShape(1, 0.6f, 0.8f)) { UserData = "TV" };
ModelNode = contentManager.Load<ModelNode>("TVBox/TVBox");
if (ModelNode.Children.OfType<LightNode>().Count() == 0)
{
// This is the first time the "TVBox" is loaded.
// Add a projector light to the model that projects the TV screen. The
// TV screen is the emissive part of the TV mesh.
var meshNode = ModelNode.Children.OfType<MeshNode>().First();
var material = meshNode.Mesh.Materials.First(m => m.Name == "TestCard");
// Get texture from material.
// Note: In XNA the effect parameter type is Texture. In MonoGame it is Texture2D.
Texture2D texture;
EffectParameterBinding parameterBinding = material["Material"].ParameterBindings["EmissiveTexture"];
if (parameterBinding is EffectParameterBinding<Texture>)
texture = (Texture2D)((EffectParameterBinding<Texture>)parameterBinding).Value;
else
texture = ((EffectParameterBinding<Texture2D>)parameterBinding).Value;
var projection = new PerspectiveProjection();
projection.Near = 0.55f;
projection.Far = 3.0f;
projection.SetFieldOfView(MathHelper.ToRadians(60), 0.76f / 0.56f);
var projectorLight = new ProjectorLight(texture, projection);
projectorLight.Attenuation = 4;
var projectorLightNode = new LightNode(projectorLight);
projectorLightNode.LookAt(new Vector3F(0, 0.2f, 0), Vector3F.Zero, Vector3F.UnitZ);
// Attach the projector light to the model.
ModelNode.Children.Add(projectorLightNode);
}
ModelNode = ModelNode.Clone();
}
else if (_type == 4)
{
// A "magic" sphere with a colored point light.
RigidBody = new RigidBody(new SphereShape(0.25f));
ModelNode = contentManager.Load<ModelNode>("MagicSphere/MagicSphere");
if (ModelNode.Children.OfType<LightNode>().Count() == 0)
{
// This is the first time the "MagicSphere" is loaded.
// Change the size of the sphere.
var meshNode = ModelNode.Children.OfType<MeshNode>().First();
meshNode.ScaleLocal = new Vector3F(0.5f);
// Disable shadows. (The sphere acts as a light source.)
meshNode.CastsShadows = false;
// Add a point light.
var pointLight = new PointLight
{
Color = new Vector3F(1, 1, 1),
DiffuseIntensity = 4,
SpecularIntensity = 4,
Range = 3,
Attenuation = 1,
Texture = contentManager.Load<TextureCube>("MagicSphere/ColorCube"),
};
var pointLightNode = new LightNode(pointLight)
{
// The point light uses shadow mapping to cast an omnidirectional shadow.
Shadow = new CubeMapShadow
{
PreferredSize = 64,
}
};
ModelNode.Children.Add(pointLightNode);
}
ModelNode = ModelNode.Clone();
}
else if (_type == 5)
{
// A sphere of glass (or "bubble").
RigidBody = new RigidBody(new SphereShape(0.3f));
ModelNode = contentManager.Load<ModelNode>("Bubble/Bubble").Clone();
ModelNode.GetDescendants().OfType<MeshNode>().First().ScaleLocal = new Vector3F(0.3f);
}
else if (_type == 6)
{
// A rusty barrel with multiple levels of detail (LODs).
RigidBody = new RigidBody(new CylinderShape(0.35f, 1));
ModelNode = contentManager.Load<ModelNode>("Barrel/Barrel").Clone();
}
else
{
// A cube consisting of a frame and transparent sides.
RigidBody = new RigidBody(new BoxShape(1, 1, 1));
ModelNode = contentManager.Load<ModelNode>("GlassBox/GlassBox").Clone();
}
SampleHelper.EnablePerPixelLighting(ModelNode);
// Set a random pose.
var randomPosition = new Vector3F(
RandomHelper.Random.NextFloat(-10, 10),
RandomHelper.Random.NextFloat(2, 5),
RandomHelper.Random.NextFloat(-20, 0));
RigidBody.Pose = new Pose(randomPosition, RandomHelper.Random.NextQuaternionF());
ModelNode.PoseWorld = RigidBody.Pose;
// Add rigid body to physics simulation and model to scene.
var simulation = _services.GetInstance<Simulation>();
simulation.RigidBodies.Add(RigidBody);
var scene = _services.GetInstance<IScene>();
scene.Children.Add(ModelNode);
}
