public bool CheckForCollision(BoundingSphere bulletBoundingSphere, Debris[] barriers)
{
for (int curBarrier = 0; curBarrier < barriers.Length; curBarrier++)
{
if (bulletBoundingSphere.Intersects(
barriers[curBarrier].BoundingSphere) && !barriers[curBarrier].Destroyed)
{
barriers[curBarrier].Destroyed = true;
return true;
}
}
return false;
}
private bool ValidateMovement(Vector3 futurePosition,
Debris[] barriers)
{
BoundingSphere futureBoundingSphere = BoundingSphere;
futureBoundingSphere.Center.X = futurePosition.X;
futureBoundingSphere.Center.Y = futurePosition.Y;
futureBoundingSphere.Center.Z = futurePosition.Z;
//Don't allow off-terrain driving
if ((Math.Abs(futurePosition.X) > MaxRange) ||
(Math.Abs(futurePosition.Z) > MaxRange))
return false;
if (futurePosition.Y <= 0 || futurePosition.Y >= 150)
return false;
//Don't allow driving through a barrier
if (CheckForDebrisCollision(futureBoundingSphere, barriers))
return false;
return true;
}
private bool CheckForDebrisCollision(
BoundingSphere vehicleBoundingSphere, Debris[] barriers)
{
for (int curBarrier = 0; curBarrier < barriers.Length; curBarrier++)
{
if (vehicleBoundingSphere.Intersects(
barriers[curBarrier].BoundingSphere) && !barriers[curBarrier].Destroyed)
return true;
}
return false;
}
public void Update(GamePadState gamepadState,
KeyboardState keyboardState, Debris[] barriers)
{
Vector3 futurePosition = Position;
float xTurnAmount = 0;
float yTurnAmount = 0;
if (Mouse.GetState().X != 290 || Mouse.GetState().Y != 240)
{
xTurnAmount = 290 - Mouse.GetState().X;
yTurnAmount = Mouse.GetState().Y - 240;
Mouse.SetPosition(290, 240);
}
ForwardDirection += xTurnAmount * GameConstants.TurnSpeed;
Matrix orientationMatrix = Matrix.CreateRotationY(ForwardDirection);
if ((AimDirection + (yTurnAmount * GameConstants.TurnSpeed) < 1.5 &&
(AimDirection + (yTurnAmount * GameConstants.TurnSpeed) > -1.5)))
{
AimDirection += yTurnAmount * GameConstants.TurnSpeed;
}
Vector3 movement = Vector3.Zero;
if (keyboardState.IsKeyDown(Keys.W))
{
movement.Z = 1;
}
else if (keyboardState.IsKeyDown(Keys.S))
{
movement.Z = -1;
}
if (keyboardState.IsKeyDown(Keys.A))
{
movement.X = 1;
}
else if (keyboardState.IsKeyDown(Keys.D))
{
movement.X = -1;
}
if (keyboardState.IsKeyDown(Keys.LeftShift))
{
movement.Y = -1;
}
if (keyboardState.IsKeyDown(Keys.Space))
{
movement.Y = 1;
}
Vector3 speed = Vector3.Transform(movement, orientationMatrix);
speed *= GameConstants.Velocity;
futurePosition = Position + speed;
if (ValidateMovement(futurePosition, barriers))
{
Position = futurePosition;
BoundingSphere updatedSphere;
updatedSphere = BoundingSphere;
updatedSphere.Center.X = Position.X;
updatedSphere.Center.Y = Position.Y;
updatedSphere.Center.Z = Position.Z;
BoundingSphere = new BoundingSphere(updatedSphere.Center,
updatedSphere.Radius);
}
}
private void InitializeGameField()
{
//Initialize barriers
barriers = new Debris[GameConstants.NumBarriers];
int randomBarrier = random.Next(3);
string barrierName = null;
for (int index = 0; index < GameConstants.NumBarriers; index++)
{
switch (randomBarrier)
{
case 0:
barrierName = "Models/cube10uR";
break;
case 1:
barrierName = "Models/cylinder10uR";
break;
case 2:
barrierName = "Models/pyramid10uR";
break;
}
barriers[index] = new Debris();
barriers[index].LoadContent(Content, barrierName);
randomBarrier = random.Next(3);
}
PlaceFuelCellsAndDebris();
}
/// <summary>
/// LoadContent will be called once per game and is the place to load
/// all of your content.
/// </summary>
protected override void LoadContent()
{
startScreen = Content.Load<Texture2D>("Images/Startup");
instructionScreen = Content.Load<Texture2D>("Images/Instructions");
controlsScreen = Content.Load<Texture2D>("Images/Controls");
healthbar1 = Content.Load<Texture2D>("Images/healthbar");
healthbar2 = Content.Load<Texture2D>("Images/healthbar2");
crosshair = Content.Load<Texture2D>("Images/crosshair");
ground.Model = Content.Load<Model>("Models/ground");
boundingSphere.Model = Content.Load<Model>("Models/sphere1uR");
spriteBatch = new SpriteBatch(GraphicsDevice);
statsFont = Content.Load<SpriteFont>("Fonts/StatsFont");
//Initialize fuel cells
fuelCells = new FuelCell[GameConstants.NumFuelCells];
for (int index = 0; index < fuelCells.Length; index++)
{
fuelCells[index] = new FuelCell();
fuelCells[index].LoadContent(Content, "Models/fuelcell");
}
//Initialize barriers
barriers = new Debris[GameConstants.NumBarriers];
int randomBarrier = random.Next(3);
string barrierName = null;
for (int index = 0; index < barriers.Length; index++)
{
switch (randomBarrier)
{
case 0:
barrierName = "Models/cube10uR";
break;
case 1:
barrierName = "Models/cylinder10uR";
break;
case 2:
barrierName = "Models/pyramid10uR";
break;
}
barriers[index] = new Debris();
barriers[index].LoadContent(Content, barrierName);
randomBarrier = random.Next(3);
}
PlaceFuelCellsAndDebris();
//Initialize fuel carrier
fuelCarrier = new Ship();
fuelCarrier.LoadContent(Content, "Models/fuelcarrier");
//int min = GameConstants.MinDistance;
//int max = GameConstants.MaxDistance;
//Load sound effects
laserSound = Content.Load<SoundEffect>("Sounds/laserSound");
laserSound2 = Content.Load<SoundEffect>("Sounds/laserSound2");
refuel = Content.Load<SoundEffect>("Sounds/powerUp");
explosion = Content.Load<SoundEffect>("Sounds/explosion");
}
public void Update(Debris[] barriers)
{
distance = distance * 1.2f;
Vector3 direction = Vector3.Transform(new Vector3(0, 0, distance), Matrix.CreateRotationX(AimDirection));
direction = Vector3.Transform(direction, Matrix.CreateRotationY(ForwardDirection));
Position = direction + startPosition;
timer++;
BoundingSphere updatedSphere;
updatedSphere = BoundingSphere;
updatedSphere.Center.X = Position.X;
updatedSphere.Center.Y = Position.Y;
updatedSphere.Center.Z = Position.Z;
BoundingSphere = new BoundingSphere(updatedSphere.Center,
updatedSphere.Radius);
}
