/// <summary>
/// Update Collection
/// </summary>
/// <param name="time"></param>
public void Update(double time)
{
float elapse = (float)(time - LastFrameTime);
LastFrameTime = time;
for (int i = 0; i < InstancePara.Length; i++)
{
Para.CollectionCenter += Vector3.Multiply(Para.CollectionSpeed, elapse);
InstancePara[i].center += Vector3.Multiply(InstancePara[i].speed3D, elapse);
if (Vector3.Distance(Para.CollectionCenter, Para.BasePara.center) > Para.BasePara.space / 2)
{
Para.CollectionSpeed = Vector3.Reflect(Para.CollectionSpeed, Vector3.Normalize(Para.BasePara.center - Para.CollectionCenter));
}
if (Vector3.Distance(InstancePara[i].center, Para.CollectionCenter) > PrimitiveInstance.BasePara.space / 2)
{
var center = Random.RandomPosition(1);
var speed = Random.RandomPosition(1);
center[0].X = center[0].X * (PrimitiveInstance.BasePara.space / 2) * (float)Math.Sin(Math.PI / 4);
center[0].Y = center[0].Y * (PrimitiveInstance.BasePara.space / 2) * (float)Math.Sin(Math.PI / 4);
center[0].Z = 0;
speed[0].X = speed[0].X * 0.5f;
speed[0].Y = speed[0].Y * 0.5f;
speed[0].Z = 0;
InstancePara[i].center = center[0] + Para.CollectionCenter;
InstancePara[i].speed3D = speed[0] + Para.CollectionSpeed;
}
InstanceMatrix[i] = VisionStimulus.GetOri3DMatrix(InstancePara[i].orientation3D) * Matrix.CreateTranslation(InstancePara[i].center);
}
}
/// <summary>
/// Allows the game to run logic such as updating the world,
/// checking for collisions, gathering input, and playing audio.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Update(GameTime gameTime)
{
Input.Update();
frameinfo.Update();
if (Input.IsKeyDown(Keys.Escape))
{
this.Exit();
}
if (Input.IsKeyDown(Keys.F2))
{
ToggleFullScreen();
}
if (Input.IsKeyDown(Keys.W))
{
model.Para.BasePara.center += Vector3.Forward * 0.02f;
model.WorldMatrix = Matrix.CreateTranslation(model.BasePara.center);
audioemitter.Position = model.BasePara.center;
}
if (Input.IsKeyDown(Keys.S))
{
model.Para.BasePara.center += Vector3.Backward * 0.02f;
model.WorldMatrix = Matrix.CreateTranslation(model.BasePara.center);
audioemitter.Position = model.BasePara.center;
}
if (Input.IsKeyDown(Keys.A))
{
model.Para.BasePara.center += Vector3.Left * 0.02f;
model.WorldMatrix = Matrix.CreateTranslation(model.BasePara.center);
audioemitter.Position = model.BasePara.center;
}
if (Input.IsKeyDown(Keys.D))
{
model.Para.BasePara.center += Vector3.Right * 0.02f;
model.WorldMatrix = Matrix.CreateTranslation(model.BasePara.center);
audioemitter.Position = model.BasePara.center;
}
model.Para.BasePara.orientation3D += model.BasePara.rotationspeed3D * (float)gameTime.ElapsedGameTime.TotalSeconds;
model.Ori3DMatrix = VisionStimulus.GetOri3DMatrix(model.BasePara.orientation3D);
if (audio.ActiveCue3Ds.Count > 0)
{
audio.ActiveCue3Ds[0].Emitter = audioemitter;
}
else
{
audio.Play("BgMusic", audioemitter);
}
audio.Update();
base.Update(gameTime);
}
/// <summary>
/// Randomize Collection Using Indices
/// </summary>
/// <param name="indices"></param>
public virtual void RandomCenterSpeed(List <int> indices)
{
var randomcenter = Random.RandomPosition(indices.Count);
var randomspeed = Random.RandomPosition(indices.Count);
for (int i = 0; i < indices.Count; i++)
{
randomcenter[i].X = randomcenter[i].X * (Collection[indices[i]].BasePara.space / 2) * (float)Math.Sin(Math.PI / 4);
randomcenter[i].Y = randomcenter[i].Y * (Collection[indices[i]].BasePara.space / 2) * (float)Math.Sin(Math.PI / 4);
randomcenter[i].Z = randomcenter[i].Z * (Collection[indices[i]].BasePara.space / 2) * (float)Math.Sin(Math.PI / 4);
Collection[indices[i]].Center = randomcenter[i] + Para.CollectionCenter;
Collection[indices[i]].Speed3D = randomspeed[i] + Para.CollectionSpeed;
Collection[indices[i]].Ori3DMatrix = VisionStimulus.GetOri3DMatrix(Collection[indices[i]].BasePara.orientation3D);
Collection[indices[i]].WorldMatrix = Matrix.CreateTranslation(Collection[indices[i]].Center);
}
}
/// <summary>
/// Randomize Part of Collection Elements
/// </summary>
/// <param name="percentage">[0, 1]</param>
public virtual void RandomCenterSpeed(float percentage)
{
int num = (int)Math.Round(Collection.Count * percentage);
var randomcenter = Random.RandomPosition(num);
var randomspeed = Random.RandomPosition(num);
for (int i = 0; i < num; i++)
{
randomcenter[i].X = randomcenter[i].X * (Collection[i].BasePara.space / 2) * (float)Math.Sin(Math.PI / 4);
randomcenter[i].Y = randomcenter[i].Y * (Collection[i].BasePara.space / 2) * (float)Math.Sin(Math.PI / 4);
randomcenter[i].Z = randomcenter[i].Z * (Collection[i].BasePara.space / 2) * (float)Math.Sin(Math.PI / 4);
Collection[i].Center = randomcenter[i] + Para.CollectionCenter;
Collection[i].Speed3D = randomspeed[i] + Para.CollectionSpeed;
Collection[i].Ori3DMatrix = VisionStimulus.GetOri3DMatrix(Collection[i].BasePara.orientation3D);
Collection[i].WorldMatrix = Matrix.CreateTranslation(Collection[i].Center);
}
}
/// <summary>
/// Update each element of collection
/// </summary>
/// <param name="time"></param>
public virtual void Update(double time)
{
float elapse = (float)(time - LastFrameTime);
LastFrameTime = time;
ResetList.Clear();
UpdateList.Clear();
for (int i = 0; i < Collection.Count; i++)
{
Para.CollectionCenter += Vector3.Multiply(Para.CollectionSpeed, elapse);
Collection[i].Center += Vector3.Multiply(Collection[i].Speed3D, elapse);
if (Vector3.Distance(Para.CollectionCenter, Para.BasePara.center) > Para.BasePara.space / 2)
{
Para.CollectionSpeed = Vector3.Reflect(Para.CollectionSpeed, Vector3.Normalize(Para.BasePara.center - Para.CollectionCenter));
}
if (Vector3.Distance(Collection[i].Center, Para.CollectionCenter) > Collection[i].BasePara.space / 2)
{
ResetList.Add(i);
}
else
{
UpdateList.Add(i);
}
}
RandomCenterSpeed(ResetList);
for (int i = 0; i < UpdateList.Count; i++)
{
Collection[UpdateList[i]].Ori3DMatrix = VisionStimulus.GetOri3DMatrix(Collection[UpdateList[i]].BasePara.orientation3D + Collection[UpdateList[i]].BasePara.rotationspeed3D * (float)time);
Collection[UpdateList[i]].WorldMatrix = Matrix.CreateTranslation(Collection[UpdateList[i]].Center);
}
}
/// <summary>
/// Init Primitive Collection
/// </summary>
/// <param name="count"></param>
/// <param name="gd"></param>
/// <param name="primitive"></param>
/// <param name="service"></param>
/// <param name="path"></param>
public void Init(int count, GraphicsDevice gd, Primitive primitive, IServiceProvider service, string path)
{
// Check Shader Model 3.0 Support
GraphicsDeviceCapabilities gdcap = gd.GraphicsDeviceCapabilities;
if (gdcap.MaxPixelShaderProfile < ShaderProfile.PS_3_0 || gdcap.MaxVertexShaderProfile < ShaderProfile.VS_3_0)
{
isshadermodel3 = false;
MessageBox.Show("This GraphicsDevice Does Not Support Shader Model 3.0.", "Warning !");
}
else
{
isshadermodel3 = true;
}
if (count <= 0)
{
MessageBox.Show("Collection Number <= 0, Automatically Set To One !");
count = 1;
}
if (PrimitiveInstance == null)
{
PrimitiveInstance = primitive.Clone() as Primitive;
}
InstancePara = new vsBasePara[count];
InstanceMatrix = new Matrix[count];
for (int i = 0; i < count; i++)
{
InstancePara[i] = PrimitiveInstance.BasePara;
}
// Randomize Center and Speed of Primitive Instances
var center = Random.RandomPosition(InstancePara.Length);
var speed = Random.RandomPosition(InstancePara.Length);
for (int i = 0; i < InstancePara.Length; i++)
{
center[i].X = center[i].X * (PrimitiveInstance.BasePara.space / 2) * (float)Math.Sin(Math.PI / 4);
center[i].Y = center[i].Y * (PrimitiveInstance.BasePara.space / 2) * (float)Math.Sin(Math.PI / 4);
center[i].Z = 0;
speed[i].X = speed[i].X * 0.5f;
speed[i].Y = speed[i].Y * 0.5f;
speed[i].Z = 0;
InstancePara[i].center = center[i] + Para.CollectionCenter;
InstancePara[i].speed3D = speed[i] + Para.CollectionSpeed;
InstanceMatrix[i] = VisionStimulus.GetOri3DMatrix(InstancePara[i].orientation3D) * Matrix.CreateTranslation(InstancePara[i].center);
}
// Load Hardware Instancing Shader
PrimitiveInstance.contentManager = new ContentManager(service, path);
try
{
hiEffect = PrimitiveInstance.contentManager.Load <Effect>("HardwareInstancing");
}
catch (Exception e)
{
MessageBox.Show(e.Message, "Error !");
}
hiEffect.Parameters["View"].SetValue(PrimitiveInstance.ViewMatrix);
hiEffect.Parameters["Projection"].SetValue(PrimitiveInstance.ProjectionMatrix);
PrimitiveInstance.vertexDeclaration = InstancingVDec(gd);
ptype = PrimitiveInstance.BasePara.primitivetype;
vexn = PrimitiveInstance.VertexArray.Length;
pcount = VisionStimulus.CheckPrimitiveCount(ptype, PrimitiveInstance.IndexArray.Length, PrimitiveInstance.IndexArray.Length);
InstanceDataStream = new DynamicVertexBuffer(gd, SLConstant.SizeOfMatrix * InstanceMatrix.Length, BufferUsage.WriteOnly);
}