public void Update(KeyboardState kb, ClsTerreno terreno, GameTime gameTime)
{
#region Movimento
// Canhão
if (kb.IsKeyDown(Keys.Up) && !kb.IsKeyDown(Keys.Down))
{
if (this.cannonRotation >= -Math.PI / 4)
{
this.cannonRotation -= MathHelper.ToRadians(1f);
}
}
else if (kb.IsKeyDown(Keys.Down) && !kb.IsKeyDown(Keys.Up))
{
if (this.cannonRotation <= 0)
{
this.cannonRotation += MathHelper.ToRadians(1f);
}
}
// turret
if (kb.IsKeyDown(Keys.Right) && !kb.IsKeyDown(Keys.Left))
{
this.turretRotation += MathHelper.ToRadians(1f);
}
else if (kb.IsKeyDown(Keys.Left) && !kb.IsKeyDown(Keys.Right))
{
this.turretRotation -= MathHelper.ToRadians(1f);
}
// MOVER TANK
if (kb.IsKeyDown(Keys.G) && !kb.IsKeyDown(Keys.J))
{
steerRotation = MathHelper.ToRadians(10f);
if (kb.IsKeyDown(Keys.Y))
{
rotation.X += MathHelper.ToRadians(1f);
}
else if (kb.IsKeyDown(Keys.H))
{
rotation.X -= MathHelper.ToRadians(1f);
}
}
else if (kb.IsKeyDown(Keys.J) && !kb.IsKeyDown(Keys.G))
{
steerRotation = MathHelper.ToRadians(-10f);
if (kb.IsKeyDown(Keys.Y))
{
rotation.X -= MathHelper.ToRadians(1f);
}
else if (kb.IsKeyDown(Keys.H))
{
rotation.X += MathHelper.ToRadians(1f);
}
}
else
{
steerRotation = MathHelper.ToRadians(0f);
}
// Mantem a rotação dentro de 2*pi (360º)
if (rotation.X > 2 * MathHelper.Pi || rotation.X < -2 * MathHelper.Pi)
{
rotation.X = 0;
}
if (kb.IsKeyDown(Keys.Y))
{
this.positionTank -= this.relativeForward * (float)gameTime.ElapsedGameTime.TotalSeconds * speed;
this.wheelRotation += MathHelper.ToRadians(1f);
}
if (kb.IsKeyDown(Keys.H))
{
this.positionTank += this.relativeForward * (float)gameTime.ElapsedGameTime.TotalSeconds * speed;
this.wheelRotation -= MathHelper.ToRadians(1f);
}
#endregion
#region Tank position calculations
// trasnformar o relative forward e right
relativeForward = Vector3.Transform(Vector3.Forward, Matrix.CreateRotationY(rotation.X));
relativeForward.Normalize();
relativeRight = Vector3.Transform(Vector3.Right, Matrix.CreateRotationY(rotation.X));
relativeRight.Normalize();
this.Up = terreno.GetNormalInterpolation(positionTank);
this.Forward = Vector3.Cross(Up, relativeRight);
this.Right = Vector3.Cross(relativeForward, Up); // calcular o vector right
Right.Normalize();
transformMatrix = Matrix.CreateTranslation(positionTank);
rotationMatrix = Matrix.CreateFromYawPitchRoll(yaw, pitch, 45f); // Rotação a dar ao tank
rotationMatrix.Forward = Forward;
rotationMatrix.Up = Up;
rotationMatrix.Right = Right;
positionTank.Y = terreno.Bilinear(positionTank).Y; // actualiza a altura do tank em relação ao terreno
#endregion
#region Apply transformations to the model bones
// Applies a transformations to any bone (Root, Turret, Cannon, …
model.Root.Transform = Matrix.CreateScale(scale) * rotationMatrix * transformMatrix;
Matrix wheel = Matrix.CreateRotationX(wheelRotation);
Matrix steer = Matrix.CreateRotationY(steerRotation);
Matrix turret = Matrix.CreateRotationY(turretRotation);
Matrix cannon = Matrix.CreateRotationX(cannonRotation);
turretBone.Transform = turret * turretTransform;
cannonBone.Transform = cannon * cannonTransform;
leftBackWheel.Transform = wheel * leftBackWheelTransform;
rightBackWheel.Transform = wheel * rightBackWheelTransform;
leftFrontWheel.Transform = wheel * leftFrontWheelTransform;
rightFrontWheel.Transform = wheel * rightFrontWheelTransform;
leftSteer.Transform = steer * leftSteerTransform;
rightSteer.Transform = steer * rightSteerTrasnform;
// Appies transforms to bones in a cascade
model.CopyAbsoluteBoneTransformsTo(boneTransforms);
#endregion
}
