public Tank(GraphicsDevice device, ContentManager content, ChooseTank tank)
{
wordlMatrix = Matrix.Identity;
r = Matrix.Identity;
direction = new Vector3(0f, 0f, -1f);
bullets = new List <Bullet>();
tankModel = content.Load <Model>("tank");
scale = 0.005f;
if (tank == ChooseTank.tank)
{
position = new Vector3(15f, -10.0f, 40f);
}
if (tank == ChooseTank.enemyTank)
{
position = new Vector3(20f, -10f, 40f);
}
effect = new BasicEffect(device);
// Calcula a aspectRatio, a view matrix e a projeção
aspectRatio = (float)device.Viewport.Width / device.Viewport.Height;
bsphere = new BoundingSphere(position, 2);
// Lê os bones
leftBackWheelBone = tankModel.Bones["l_back_wheel_geo"];
rightBackWheelBone = tankModel.Bones["r_back_wheel_geo"];
leftFrontWheelBone = tankModel.Bones["l_front_wheel_geo"];
rightFrontWheelBone = tankModel.Bones["r_front_wheel_geo"];
leftSteerBone = tankModel.Bones["l_steer_geo"];
rightSteerBone = tankModel.Bones["r_steer_geo"];
turretBone = tankModel.Bones["turret_geo"];
cannonBone = tankModel.Bones["canon_geo"];
// Lê as transformações iniciais dos bones
leftBackWheelTransform = leftBackWheelBone.Transform;
rightBackWheelTransform = rightBackWheelBone.Transform;
leftFrontWheelTransform = leftFrontWheelBone.Transform;
rightFrontWheelTransform = rightFrontWheelBone.Transform;
leftSteerTransform = leftSteerBone.Transform;
rightSteerTransform = rightSteerBone.Transform;
turretTransform = turretBone.Transform;
cannonTransform = cannonBone.Transform;
// cria o array que armazenará as transformações em cascata dos bones
boneTransforms = new Matrix[tankModel.Bones.Count];
}
public void Update(Field field, ChooseTank tank, Bullet bullet, GameTime gametime)
{
//posição inicial da direção
direction = new Vector3(0f, 0f, -1f);
float turnAngle = MathHelper.ToRadians(10f);
Vector3 positionBack = position;
KeyboardState keys = Keyboard.GetState();
//Tank
if (tank == ChooseTank.tank)
{
//movimento do tank e respetiva rotação das rodas
if (keys.IsKeyDown(Keys.A))
{
yaw += turnAngle * speed;
if (steerRotationValue < 0.5f)
{
steerRotationValue += 0.1f;
}
}
if (keys.IsKeyDown(Keys.D))
{
yaw -= turnAngle * speed;
if (steerRotationValue > -0.5f)
{
steerRotationValue -= 0.1f;
}
}
if (keys.IsKeyUp(Keys.A) && keys.IsKeyUp(Keys.D))
{
steerRotationValue = 0f;
}
//definição da rotationMatrix através do yaw e do pitch
rotationMatrix = Matrix.CreateFromYawPitchRoll(yaw, pitch, 0);
//transformação da direção através da rotationMatrix
direction = Vector3.Transform(direction, rotationMatrix);
if (keys.IsKeyDown(Keys.W))
{
position -= direction * speed;
wheelRotationValue += 0.2f;
}
if (keys.IsKeyDown(Keys.S))
{
position += direction * speed;
wheelRotationValue -= 0.2f;
}
//movimento da torre e do canhão
if (keys.IsKeyDown(Keys.Up))
{
if (cannonRotationValue > -90f)
{
cannonRotationValue -= 0.8f;
}
cannonBone.Transform = Matrix.CreateRotationX(MathHelper.ToRadians(cannonRotationValue)) * cannonTransform;
}
if (keys.IsKeyDown(Keys.Down))
{
if (cannonRotationValue < 2.5f)
{
cannonRotationValue += 0.8f;
}
cannonBone.Transform = Matrix.CreateRotationX(MathHelper.ToRadians(cannonRotationValue)) * cannonTransform;
}
if (keys.IsKeyDown(Keys.Left))
{
turretRotationValue += 0.8f;
turretBone.Transform = Matrix.CreateRotationY(MathHelper.ToRadians(turretRotationValue)) * turretTransform;
}
if (keys.IsKeyDown(Keys.Right))
{
turretRotationValue -= 0.8f;
turretBone.Transform = Matrix.CreateRotationY(MathHelper.ToRadians(turretRotationValue)) * turretTransform;
}
//Shoot
if ((keys.IsKeyDown(Keys.Space) && (bullet.isShooting == false)))
{
Shoot(gametime, bullet);
}
//Limitar o movimento aos limites do terreno
if (position.X - 1 < 0)
{
position = positionBack;
}
if (position.Z - 1 < 0)
{
position = positionBack;
}
if (position.X + 2f > field.width)
{
position = positionBack;
}
if (position.Z + 2f > field.height)
{
position = positionBack;
}
position.Y = field.SurfaceFollow(position) + 0.15f;
//chamada da função NormalFollow
n = field.NormalFollow(position);
right = Vector3.Cross(direction, n);
d = Vector3.Cross(n, right);
r = Matrix.Identity;
r.Forward = d;
r.Up = n;
r.Right = right;
}
}
