public RaceTrackCurve(float terrainWidth, Vector3 terrainScale)
{
float nodecenter = 1.0f * terrainWidth / 4f;
float variation = 1.0f, strength = .6f;
int direction = 2 * UniversalRandom.GetInstance().Next(2) - 1;
float height = .14f;
//float height = (float)UniversalRandom.GetInstance().NextDouble() / 3f;
//nodes.Add(new CurveNode()
//{
// Position = terrainScale * new Vector3(0, height, -nodecenter),
// Tangent = Vector3.Transform(terrainScale * new Vector3(nodecenter, 0, 0), Matrix.CreateRotationY(MathHelper.PiOver4 * (float)(2 * UniversalRandom.GetInstance().NextDouble() - 1) / 2))
//});
float step = MathHelper.TwoPi / 5f;
for (float i = 0; i < MathHelper.TwoPi; i += step)
{
height = (float)(.15 + .2 * (UniversalRandom.GetInstance().NextDouble() - .5));
nodes.Add(new CurveNode()
{
Position = terrainScale * Vector3.Transform(new Vector3(nodecenter, height, 0), Matrix.CreateRotationY(direction * i)),
Tangent = Vector3.Transform(terrainScale * new Vector3(0, 0, -direction * strength * nodecenter),
Matrix.CreateRotationY(direction * (i + (float)(variation * UniversalRandom.GetInstance().NextDouble()))))
});
}
//nodes.Add(new CurveNode()
//{
// Position = terrainScale * new Vector3(nodecenter, height, -nodecenter / 2),
// //Tangent = Vector3.Transform(terrainScale * new Vector3(nodecenter, 0, 0), Matrix.CreateRotationY(MathHelper.PiOver4 * (float)(2 * UniversalRandom.GetInstance().NextDouble() - 1) / 2))
// Tangent = Vector3.Transform(terrainScale * new Vector3(variation * nodecenter/2, 0, variation * nodecenter), Matrix.CreateRotationY(MathHelper.PiOver4 * (float)(2 * UniversalRandom.GetInstance().NextDouble() - 1)))
//});
//nodes.Add(new CurveNode()
//{
// Position = terrainScale * new Vector3(nodecenter / 2, height, nodecenter),
// //Tangent = Vector3.Transform(terrainScale * new Vector3(-nodecenter, 0, 0), Matrix.CreateRotationY(MathHelper.PiOver4 * (float)(2 * UniversalRandom.GetInstance().NextDouble() - 1) / 2))
// Tangent = Vector3.Transform(terrainScale * new Vector3(variation * -nodecenter / 2, 0, variation * nodecenter), Matrix.CreateRotationY(MathHelper.PiOver4 * (float)(2 * UniversalRandom.GetInstance().NextDouble() - 1)))
//});
//nodes.Add(new CurveNode()
//{
// Position = terrainScale * new Vector3(-nodecenter / 2, height, nodecenter),
// //Tangent = Vector3.Transform(terrainScale * new Vector3(-nodecenter, 0, 0), Matrix.CreateRotationY(MathHelper.PiOver4 * (float)(2 * UniversalRandom.GetInstance().NextDouble() - 1) / 2))
// Tangent = Vector3.Transform(terrainScale * new Vector3(variation * -nodecenter, 0, variation * nodecenter / 2), Matrix.CreateRotationY(MathHelper.PiOver4 * (float)(2 * UniversalRandom.GetInstance().NextDouble() - 1)))
//});
//nodes.Add(new CurveNode()
//{
// Position = terrainScale * new Vector3(-nodecenter, height, -nodecenter / 2),
// //Tangent = Vector3.Transform(terrainScale * new Vector3(nodecenter, 0, 0), Matrix.CreateRotationY(MathHelper.PiOver4 * (float)(2 * UniversalRandom.GetInstance().NextDouble() - 1) / 2))
// Tangent = Vector3.Transform(terrainScale * new Vector3(0, 0, variation * -nodecenter), Matrix.CreateRotationY(MathHelper.PiOver4 * (float)(2 * UniversalRandom.GetInstance().NextDouble() - 1)))
//});
}
private void InitGradients()
{
for (int i = 0; i < GradientSizeTable; i++)
{
float z = 1f - 2f * (float)UniversalRandom.GetInstance().NextDouble();
float r = (float)Math.Sqrt(1f - z * z);
float theta = 2 * (float)Math.PI * (float)UniversalRandom.GetInstance().NextDouble();
_gradients[i * 3] = r * (float)Math.Cos(theta);
_gradients[i * 3 + 1] = r * (float)Math.Sin(theta);
_gradients[i * 3 + 2] = z;
}
}
/// <summary>
/// Adds a new particle to the system.
/// </summary>
public void AddParticle(Vector3 position, Vector3 velocity)
{
// Figure out where in the circular queue to allocate the new particle.
int nextFreeParticle = firstFreeParticle + 1;
if (nextFreeParticle >= settings.MaxParticles)
{
nextFreeParticle = 0;
}
// If there are no free particles, we just have to give up.
if (nextFreeParticle == firstRetiredParticle)
{
return;
}
// Adjust the input velocity based on how much
// this particle system wants to be affected by it.
velocity *= settings.EmitterVelocitySensitivity;
// Add in some random amount of horizontal velocity.
float horizontalVelocity = MathHelper.Lerp(settings.MinHorizontalVelocity,
settings.MaxHorizontalVelocity,
(float)UniversalRandom.GetInstance().NextDouble());
double horizontalAngle = UniversalRandom.GetInstance().NextDouble() * MathHelper.TwoPi;
velocity.X += horizontalVelocity * (float)Math.Cos(horizontalAngle);
velocity.Z += horizontalVelocity * (float)Math.Sin(horizontalAngle);
// Add in some random amount of vertical velocity.
velocity.Y += MathHelper.Lerp(settings.MinVerticalVelocity,
settings.MaxVerticalVelocity,
(float)UniversalRandom.GetInstance().NextDouble());
// Choose four random control values. These will be used by the vertex
// shader to give each particle a different size, rotation, and color.
Color randomValues = new Color((byte)UniversalRandom.GetInstance().Next(255),
(byte)UniversalRandom.GetInstance().Next(255),
(byte)UniversalRandom.GetInstance().Next(255),
(byte)UniversalRandom.GetInstance().Next(255));
// Fill in the particle vertex structure.
for (int i = 0; i < 4; i++)
{
particles[firstFreeParticle * 4 + i].Position = position;
particles[firstFreeParticle * 4 + i].Velocity = velocity;
particles[firstFreeParticle * 4 + i].Random = randomValues;
particles[firstFreeParticle * 4 + i].Time = currentTime;
}
firstFreeParticle = nextFreeParticle;
}
public Stone(GameManager game)
: base()
{
this.game = game;
Model = stoneVariants[UniversalRandom.GetInstance().Next(stoneVariants.Count)];
}
public BirdCurve()
{
float nodecenter = 1000;
float variation = .8f;
nodes.Add(new CurveNode()
{
Position = new Vector3(0, 5000f, -nodecenter),
Tangent = Vector3.Transform(new Vector3(variation * nodecenter, 0, 0), Matrix.CreateRotationY(MathHelper.PiOver4 * (float)(2 * UniversalRandom.GetInstance().NextDouble() - 1)))
});
nodes.Add(new CurveNode()
{
Position = new Vector3(nodecenter, 5000f, 0),
Tangent = Vector3.Transform(new Vector3(0, 0, variation * nodecenter), Matrix.CreateRotationY(MathHelper.PiOver4 * (float)(2 * UniversalRandom.GetInstance().NextDouble() - 1)))
});
nodes.Add(new CurveNode()
{
Position = new Vector3(0, 5000f, nodecenter),
Tangent = Vector3.Transform(new Vector3(variation * -nodecenter, 0, 0), Matrix.CreateRotationY(MathHelper.PiOver4 * (float)(2 * UniversalRandom.GetInstance().NextDouble() - 1)))
});
nodes.Add(new CurveNode()
{
Position = new Vector3(-nodecenter, 5000f, 0),
Tangent = Vector3.Transform(new Vector3(0, 0, variation * -nodecenter), Matrix.CreateRotationY(MathHelper.PiOver4 * (float)(2 * UniversalRandom.GetInstance().NextDouble() - 1)))
});
}
public override void Update(GameTime gameTime)
{
if (spawn)
{
spawn = false;
flash = 1;
Game.GetService <CameraComponent>().CurrentCamera.Shake();
List <SubBolt> branches = new List <SubBolt>();
branches.Add(new SubBolt()
{
position = startPosition + new Vector3(
5000 * ((float)UniversalRandom.GetInstance().NextDouble() - .5f), 0,
5000 * ((float)UniversalRandom.GetInstance().NextDouble() - .5f)),
target = endPosition + new Vector3(
20000 * ((float)UniversalRandom.GetInstance().NextDouble() - .5f), 0,
20000 * ((float)UniversalRandom.GetInstance().NextDouble() - .5f))
});
while (branches.Count > 0)
{
for (int i = 0; i < branches.Count; i++)
{
Vector3 dTarget = branches[i].target - branches[i].position;
float distance = dTarget.Length();
// Remove
if (distance < 150)
{
branches.RemoveAt(i--);
continue;
}
// Add
if (UniversalRandom.GetInstance().NextDouble() < .002 && i == 0)
{
var newBolt = branches[i].Clone();
newBolt.target = newBolt.position + Vector3.Transform(dTarget,
Matrix.CreateFromYawPitchRoll(
rotationSeed * ((float)UniversalRandom.GetInstance().NextDouble() - .5f),
rotationSeed * ((float)UniversalRandom.GetInstance().NextDouble() - .5f),
rotationSeed * ((float)UniversalRandom.GetInstance().NextDouble() - .5f)));
newBolt.target = Vector3.Lerp(newBolt.target, branches[0].target, .4f);
branches.Add(newBolt);
}
branches[i].minDist = distance;
dTarget.Normalize();
// Offset dTarget
Vector3 offset = Vector3.Transform(2f * dTarget,
Matrix.CreateFromYawPitchRoll(
rotationSeed * ((float)UniversalRandom.GetInstance().NextDouble() - .5f),
rotationSeed * ((float)UniversalRandom.GetInstance().NextDouble() - .5f),
rotationSeed * ((float)UniversalRandom.GetInstance().NextDouble() - .5f)));
for (int j = 0; j < 2; j++)
{
particleSystem.AddParticle(branches[i].position, Vector3.Zero);
branches[i].position += 10 * j * offset;
}
}
}
}
if (flash > 0)
{
flash = Math.Max(flash - .01f, 0);
}
Game.GetService <DirectionalLight>().Ambient = flash * flashColor;
base.Update(gameTime);
}
public BirchTree(GameManager game)
: base()
{
this.game = game;
Model = birchTreesVariants[UniversalRandom.GetInstance().Next(birchTreesVariants.Count)];
}